================================================================================
                                                    Registration No. 333-

                       SECURITIES AND EXCHANGE COMMISSION
                                    FORM S-3
                          REGISTRATION STATEMENT UNDER
                           THE SECURITIES ACT OF 1933

                            INDIANA GAS COMPANY, INC.
             (Exact name of registrant as specified in its charter)
             INDIANA                                  35-0793669
(State or other jurisdiction of             (I.R.S. Employer Identification No.)
 incorporation or organization)

                           1630 North Meridian Street
                           Indianapolis, Indiana 46202
                                 (317) 926-3351
                   (Address, including zip code, and telephone
                         number, including area code, of
                    registrant's principal executive offices)

            Niel C. Ellerbrook, President and Chief Executive Officer
                            Indiana Gas Company, Inc.
                           1630 North Meridian Street
                           Indianapolis, Indiana 46202
                                 (317) 321-0510
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

                                   Copies to:
Catherine L. Bridge, Esquire                  Edward F. Petrosky, Esquire
Barnes & Thornburg                            Brown & Wood LLP
11 South Meridian Street                      One World Trade Center
Indianapolis, Indiana 46204                   New York, New York  10048-0557

         Approximate  date of commencement of proposed sale to the public:  From
time  to time  after  the  effective  date of  this  Registration  Statement  as
determined by market conditions.

         If the only securities  being registered on this Form are being offered
pursuant to dividend or interest  reinvestment plans, please check the following
box. [ ]

         If any of the  securities  being  registered  on  this  Form  are to be
offered  on a  delayed  or  continuous  basis  pursuant  to Rule 415  under  the
Securities Act of 1933,  other than  securities  offered only in connection with
dividend or interest reinvestment plans, check the following box.[ X]

         If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. [ ]

         If this  Form is a  post-effective  amendment  filed  pursuant  to Rule
462(c) under the Securities Act, check the following box and list the Securities
Act  registration   statement  number  of  the  earlier  effective  registration
statement for the same offering. [ ]

         If delivery of the  prospectus  is expected to be made pursuant to Rule
434, please check the following box. [ ]

                         Calculation of Registration Fee


=====================================================================================================================
  Title of each class
  of securities to be       Amount to be         Proposed maximum           Proposed maximum           Amount of
      registered             registered      offering price per unit       aggregate offering       registration fee
                                                                                  price
- ---------------------------------------------------------------------------------------------------------------------
                                                                                            
      Medium-Term
    Notes, Series G        $100,000,000*              100%**                  $100,000,000              $27,800
=====================================================================================================================


*        Or, in the event of the  issuance of discount  securities,  such higher
         principal amount as may be sold for an initial public offering price of
         $100,000,000.

**       Inserted  solely for the purpose of calculating the  registration  fee.
- --------------------------------------------------------------------------------
                                                                S-1





         The registrant hereby amends this  registration  statement on such date
or dates as may be necessary to delay its  effective  date until the  registrant
shall file a further amendment which specifically  states that this registration
statement shall  thereafter  become effective in accordance with Section 8(a) of
the  Securities  Act of 1933 or until the  registration  statement  shall become
effective on such date as the Commission,  acting pursuant to said Section 8(a),
may determine.




Information  contained in this prospectus  supplement is not complete and may be
changed. We may not sell these securities until the registration statement filed
with the  Securities  and Exchange  Commission  is  effective.  This  prospectus
supplement  and the  accompanying  prospectus  is not an  offer  to  sell  these
securities  and it is not  soliciting  an offer to buy these  securities  in any
jurisdiction where the offer or sale is not permitted.

                              Subject to Completion
           Preliminary Prospectus Supplement dated ________ ____, 1999

PROSPECTUS SUPPLEMENT
(TO PROSPECTUS DATED         , 1999)

                                  $100,000,000
                            Indiana Gas Company, Inc.
                           Medium-Term Notes, Series G
                   Due Nine Months or More from Date of Issue
                         -------------------------------

The notes:

o    We will offer notes from time to time and specify the terms and  conditions
     of each issue of notes in a pricing supplement.

o    The notes will be senior unsecured debt securities of Indiana Gas.

o    The notes will have stated  maturities of nine months or more from the date
     they are originally issued.

o    We will pay amounts due on the notes in
     U.S. dollars.

o    The notes may bear interest at fixed or floating  rates or may not bear any
     interest.  If the notes bear interest at a floating rate, the floating rate
     may be based on one or more indices or formulas.

o    We will  specify  whether the notes can be redeemed or repaid  before their
     maturity and whether they are subject to mandatory  redemption,  redemption
     at the option of Indiana  Gas or  repayment  at the option of the holder of
     the notes.

                 Investing in the notes involves certain risks.
                         See "Risk Factors" on page S-3.

Neither  the  Securities  and  Exchange  Commission  nor  any  state  securities
commission has approved or disapproved of these securities or determined if this
prospectus supplement,  the accompanying prospectus or any pricing supplement is
truthful or complete. Any representation to the contrary is a criminal offense.


                                                 Agent's Discounts       Proceeds, before expenses, to
                Public Offering Price             and Commissions          Indiana Gas Company, Inc.
                ---------------------             ---------------          -------------------------

                                                                  
Per note....                100%                    .125%-.750%                 99.875%-99.250%
Total.......        $100,000,000                $125,000--$750,000         $99,875,000--$99,250,000


We may sell  notes to the agent  referred  to below as  principal  for resale at
varying  or fixed  offering  prices  or  through  the  agent as agent  using its
reasonable  efforts on our behalf. We may also sell notes without the assistance
of the agent, whether acting as principal or as agent.

If we sell other debt securities referred to in the accompanying prospectus, the
amount of the notes that we may offer and sell under this prospectus  supplement
may be reduced.
                         -------------------------------

                               Merrill Lynch & Co.

                         -------------------------------
                The date of this prospectus supplement is , 1999.





                                TABLE OF CONTENTS

                                                                           Page
                              PROSPECTUS SUPPLEMENT


Risk Factors.............................................................. S-3
Description of the Notes.................................................. S-4
Certain United States Federal Income Tax Considerations...................S-32
Plan of Distribution......................................................S-40
Validity of the Notes.....................................................S-42

                                   PROSPECTUS

Indiana Gas Company, Inc..................................................   2
Recent Developments.......................................................   3
Use of Proceeds...........................................................   4
Ratio of Earnings to Fixed Charges........................................   4
Description of the Debt Securities........................................   5
Plan of Distribution......................................................  11
Where You Can Find More Information.......................................  12
Incorporation of Information We File With the SEC.........................  12
Experts...................................................................  13


         You should rely only on the  information  contained or  incorporated by
reference in this prospectus  supplement,  the  accompanying  prospectus and any
pricing supplement.  Neither we nor any agent has authorized any other person to
provide you with  different or additional  information.  If anyone  provides you
with different or additional information,  you should not rely on it. Neither we
nor any agent is making an offer to sell these  securities  in any  jurisdiction
where the offer or sale is not permitted. You should assume that the information
contained  or  incorporated  by  reference in this  prospectus  supplement,  the
accompanying  prospectus  and any pricing  supplement is accurate only as of the
date on the front cover of the applicable pricing supplement.

         References in this  prospectus  supplement to "Indiana Gas," "we," "us"
and "our" are to Indiana Gas Company, Inc.

         References  in this  prospectus  supplement  to "agent"  are to Merrill
Lynch & Co. or any other agent appointed by us.


                                       S-2






                                  RISK FACTORS

         Your  investment in the notes involves  certain risks.  In consultation
with your own financial and legal advisers, you should carefully consider, among
other  matters,  the following  discussion of risks before  deciding  whether an
investment  in the notes is suitable for you.  The notes are not an  appropriate
investment for you if you are unsophisticated  with respect to their significant
components.

Structure Risks of Notes Indexed to Interest Rate,  Currency or Other Indices or
Formulas

         If you invest in notes  indexed to one or more  interest  rate or other
indices or  formulas,  there will be  significant  risks not  associated  with a
conventional  fixed rate or floating  rate debt  security.  These risks  include
fluctuation of the indices or formulas and the possibility that you will receive
a lower, or no, amount of principal,  premium or interest and at different times
than you  expected.  We have no  control  over a number  of  matters,  including
economic,  financial and political events, that are important in determining the
existence,  magnitude  and  longevity  of these  risks  and  their  results.  In
addition,  if an index or  formula  used to  determine  any  amounts  payable in
respect of the notes contains a multiplier or leverage factor, the effect of any
change in that index or formula will be magnified.  In recent  years,  values of
certain  indices and formulas  have been  volatile and  volatility  in those and
other  indices  and  formulas  may be  expected  in the  future.  However,  past
experience is not necessarily indicative of what may occur in the future.

Redemption May Adversely Affect Your Return on the Notes

         If your notes are redeemable at our option or are otherwise  subject to
mandatory  redemption,  we may, in the case of optional redemption,  or must, in
the case of  mandatory  redemption,  choose to redeem  your  notes at times when
prevailing interest rates may be relatively low. Accordingly, you generally will
not be able to reinvest the redemption  proceeds in a comparable  security at an
effective interest rate as high as that of the notes.

There May Be an Uncertain Trading Market for Your Notes; Many Factors Affect the
Trading Value of Your Notes

         We cannot assure you a trading  market for your notes will ever develop
or be maintained.  Many factors independent of our  creditworthiness  may affect
the trading market of your notes.
These factors include:

         o        the   complexity  and  volatility  of  the  index  or  formula
                  applicable to the notes,

         o        the method of calculating the principal,  premium and interest
                  in respect of the notes,

         o        the time remaining to the maturity of the notes,

                                                        S-3






         o        the outstanding amount of the notes,

         o        the redemption features of the notes,

         o        the amount of other securities  linked to the index or formula
                  applicable to the notes, and

         o        the level,  direction and volatility of market  interest rates
                  generally.

         In addition,  because some notes were designed for specific  investment
objectives or  strategies,  these notes will have a more limited  trading market
and experience  more price  volatility.  There may be a limited number of buyers
for these  notes.  This may affect the price you receive for these notes or your
ability to sell these notes at all.  You should not  purchase  notes  unless you
understand and know you can bear the related investment risks.

Our Credit Ratings May Not Reflect All Risks of an Investment in the Notes

         Our  credit  ratings  are an  assessment  of  our  ability  to pay  our
obligations.  Consequently,  real or  anticipated  changes in our credit ratings
will  generally  affect  the market  value of your  notes.  Our credit  ratings,
however,  may not reflect the  potential  impact of risks  related to structure,
market or other factors discussed above on the value of your notes.

                            DESCRIPTION OF THE NOTES

         The notes  will be issued as a new series of debt  securities  under an
indenture,  dated as of February 1, 1991,  as amended,  between  Indiana Gas and
U.S.  Bank Trust  National  Association  (formerly  Continental  Bank,  National
Association),  as trustee.  The following summary of the material  provisions of
the notes and of the  indenture is not complete and is qualified in its entirety
by reference to the  indenture,  a copy of which has been filed as an exhibit to
the  registration   statement  of  which  this  prospectus  supplement  and  the
accompanying prospectus are a part.

         The  following   description  of  notes  will  apply  unless  otherwise
specified in an applicable pricing supplement.

Terms of the Notes

         The notes will be issued as a new series of debt  securities  under the
indenture.  All notes  issued  under the  indenture  will be  unsecured  general
obligations  of Indiana Gas and will rank equally with all other  unsecured  and
unsubordinated indebtedness of Indiana Gas from time to time outstanding.

         The  indenture  does not limit the amount of debt which Indiana Gas may
issue. Indiana Gas may issue its debt from time to time as a single series or in
two or more separate series up to

                                                        S-4






the aggregate  principal  amount from time to time authorized by Indiana Gas for
each series.  As of March 31, 1999,  Indiana Gas had $191,939,000 of outstanding
long term debt, none of which is secured.

         The notes will be offered on a  continuing  basis and will  mature on a
day nine months or more from the date of issue, as selected by the purchaser and
agreed to by Indiana Gas.  Interest-  bearing notes will bear interest at either
fixed or floating rates as specified in the applicable pricing supplement. Notes
may be issued at significant  discounts from their  principal  amount payable at
stated  maturity,  or on any date before the stated  maturity  date on which the
principal  or an  installment  of  principal  of a note becomes due and payable,
whether by the declaration of acceleration, call for redemption at the option of
Indiana  Gas,  repayment  at the option of the holder or  otherwise  (the stated
maturity  date or such prior  date,  as the case may be, is  referred  to as the
"Maturity  Date" with respect to the  principal  repayable  on such date).  Some
notes may not bear interest.

         The notes will be  denominated in United States dollars and Indiana Gas
will make  payments of principal  of, and premium,  if any, and interest on, the
notes in United States dollars.

         Each  Note  will be  issued  in fully  registered  form  only,  without
coupons.   Each  note  will  be  issued  initially  in  book-entry  form  or  in
certificated form. Each book-entry note will be represented by one or more fully
registered  global notes  registered in the name of a nominee of The  Depository
Trust Company, as depository.  Except as set forth under "--Book-Entry Notes" or
in  any  applicable  pricing  supplement,  the  notes  will  not  be  issued  as
certificated  notes.  The notes  will be issued in  denominations  of $1,000 and
integral  multiples of $1,000.  Interest rates may differ  depending upon, among
other  things,  the  aggregate  principal  amount of the notes  purchased in any
single transaction.

         The pricing  supplement  relating to a note will describe the following
terms:

         o        whether  the note will bear  interest  at a fixed rate or at a
                  floating rate, or will not bear any interest;

         o        the  price   (expressed  as  a  percentage  of  the  aggregate
                  principal amount) at which the note will be issued;

         o        the date on which the note will be issued;

         o        the date on which the note will mature;

         o        if the note is a fixed rate note,  the rate per annum at which
                  the note will bear interest and the interest payment dates;

         o        if the note is a floating rate note, the terms relating to the
                  determination  and payment of the variable  interest  rate and
                  the interest payment dates;

                                                        S-5






         o        if the note may be redeemed  at the option of Indiana  Gas, or
                  repaid at the option of the holder,  prior to stated maturity,
                  a description of the provisions  relating to the redemption or
                  repayment;

         o        any  sinking  fund or other  mandatory  redemption  provisions
                  applicable to the note;

         o        if the note will be issued as a certificated note, a statement
                  to that effect;

         o        any  other  terms  of  the  note  not  inconsistent  with  the
                  provisions of the indenture;

         o        the identity of any  additional  agent  through or to whom the
                  note is sold; and

         o        the amount of discounts or  commissions to be paid to an agent
                  if  different  from  those   specifically  set  forth  in  the
                  distribution  agreement  which is filed as an  exhibit  to the
                  registration statement of which this prospectus supplement and
                  the accompanying prospectus are a part.

         Interest  rates  offered by Indiana  Gas with  respect to the notes may
differ  depending upon,  among other things,  the aggregate  principal amount of
notes purchased in any single transaction.  Interest rates or formulas and other
terms of the notes are subject to change by Indiana  Gas from time to time,  but
no change will  affect any note  already  issued or as to which  Indiana Gas has
accepted an offer to purchase. Indiana Gas may offer notes with similar variable
terms other than interest rates  concurrently at any time.  Indiana Gas may also
concurrently offer notes having different variable terms to different investors.

         Unless  otherwise  specified  in  the  applicable  pricing  supplement,
"interest  payment  date," in the case of fixed rate notes,  means each March 15
and  September  15 and,  in the case of  floating  rate  notes,  has the meaning
specified under "Interest -- Floating Rate Notes."

Payment of Principal and Interest

         Indiana Gas will make interest payments on the book-entry notes by wire
transfer in immediately available funds through the trustee to the depository or
its nominee.

         Payments of principal of, and premium, if any, and interest, if any, on
book-entry  notes  will  be made by  Indiana  Gas  through  the  trustee  to the
depository  or  its  nominee.   See  "--Book-  Entry  Notes."  In  the  case  of
certificated  notes,  payment  of  principal  and  premium,  if any,  due on the
Maturity Date will be made in immediately  available funds upon presentation and
surrender of the  certificated  notes (and,  in the case of any  repayment on an
optional  repayment date,  upon submission of a duly completed  election form if
and as  required  by the  provisions  described  below) at the  office or agency
maintained by Indiana Gas for such purpose in the Borough of

                                                        S-6






Manhattan,  The City of New York,  currently the  corporate  trust office of the
trustee  located at 100 Wall  Street,  Suite  2000,  New York,  New York  10005.
Payment of interest,  if any, due on the Maturity  Date of a  certificated  note
will be made to the person to whom payment of the principal and premium, if any,
shall be made.  Payment of interest,  if any, due on a certificated  note on any
interest  payment date other than the Maturity Date will be made by check mailed
to the  address  of the  holder as such  address  shall  appear in the  security
register.  Notwithstanding  the  foregoing,  a holder of  $10,000,000 or more in
aggregate  principal  amount of certificated  notes (whether having identical or
different terms and provisions) will be entitled to receive  interest  payments,
if any,  on any  interest  payment  date  other than the  Maturity  Date by wire
transfer in immediately available funds if such holder delivers appropriate wire
transfer  instructions  in writing to the trustee not less than 15 days prior to
the relevant interest payment date. Any such wire transfer instructions received
by the trustee will remain in effect until revoked by such holder.

Redemption at the Option of Indiana Gas

         Indiana  Gas may redeem the notes at its option  prior to their  stated
maturity date only if specified in the  applicable  notes and in the  applicable
pricing  supplement.  If so  indicated  in the  applicable  pricing  supplement,
Indiana  Gas may  redeem  the  notes at its  option  on any date on or after the
applicable   initial   redemption  date  specified  in  the  applicable  pricing
supplement.  On or after the initial  redemption  date, if any,  Indiana Gas may
redeem  the  related  note at any time in whole or in part at its  option at the
applicable  redemption  price  referred to below  together  with interest on the
principal of the  applicable  note  payable to the  redemption  date,  on notice
given,  not more  than 60 nor less  than 30 days  before  the  redemption  date.
Indiana Gas will redeem the notes in  increments  of $1,000,  provided  that any
remaining principal amount will be an authorized  denomination of the applicable
note.  Unless  otherwise  specified in the applicable  pricing  supplement,  the
redemption  price with respect to a note will initially mean a percentage  (i.e.
the initial  redemption  percentage)  of the principal  amount of the note to be
redeemed  specified in the  applicable  pricing  supplement and shall decline at
each anniversary of the initial redemption date by a percentage specified in the
applicable pricing supplement (i.e. the annual redemption  percentage reduction)
of the principal amount to be redeemed until the redemption price is 100% of the
principal amount.

         The  pricing  supplement  with  respect  to a  note  will  specify  any
applicable mandatory redemption or sinking fund provisions.

Repayment at the Option of the Holder

         If so indicated in an applicable pricing  supplement,  Indiana Gas will
repay the notes in whole or in part at the option of the holders of the notes on
any optional repayment date specified in the applicable pricing  supplement.  If
no optional  repayment  date is indicated with respect to a note, it will not be
repayable  at the option of the holder  before its  stated  maturity  date.  Any
repayment in part will be in an amount equal to $1,000 or integral  multiples of
$1,000,  provided  that any  remaining  principal  amount will be an  authorized
denomination of the applicable note.

                                                        S-7






The repurchase  price for any note so repurchased  will be 100% of the principal
amount to be repaid,  together  with  unpaid  interest on the  principal  of the
applicable note payable to the date of repayment. For any note to be repaid, the
trustee must receive, at its office in Chicago,  Illinois (or such other address
as  Indiana  Gas shall from time to time  designate),  not more than 60 nor less
than 30 days before the optional repayment date:

         o        in the case of a note in  certificated  form, the note and the
                  form entitled "Option to Elect Repayment" duly completed, or

         o        in the case of a note in book-entry form, instructions to that
                  effect  from the  applicable  beneficial  owner of the  global
                  security   representing   the  notes  to  the  depository  and
                  forwarded by the depository.


Notices of  elections  from a holder to exercise  the  repayment  option must be
received  by the trustee by 5:00 p.m.,  New York City time,  on the last day for
giving such  notice.  Exercise of the  repayment  option by the holder of a note
will be irrevocable.

         Only the  depository  may exercise the  repayment  option in respect of
global securities representing notes in book-entry form. Accordingly, beneficial
owners of global  securities that desire to have all or any portion of the notes
in book-entry  form  represented by global  securities  repaid must instruct the
participant  through which they own their  interest to direct the  depository to
exercise  the  repayment  option on their  behalf by  forwarding  the  repayment
instructions  to the  trustee as  discussed  above.  In order to ensure that the
instructions  are  received by the trustee on a particular  day, the  applicable
beneficial  owner must so instruct  the  participant  through  which it owns its
interest before that participant's  deadline for accepting instructions for that
day.  Different  firms may have different  deadlines for accepting  instructions
from their customers. Accordingly, beneficial owners of notes in book-entry form
should  consult the  participants  through which they own their interest for the
respective  deadlines.  All instructions  given to participants  from beneficial
owners of notes in  book-entry  form  relating to the option to elect  repayment
will be  irrevocable.  In addition,  at the time  instructions  are given,  each
beneficial  owner will cause the participant  through which it owns its interest
to transfer its interest in the global security or securities  representing  the
related notes in book-entry form, on the depository's  records,  to the trustee.
See "--Book-Entry Notes."

         If applicable, Indiana Gas will comply with the requirements of Section
14(e)  of the  Securities  Exchange  Act  of  1934  and  the  rules  promulgated
thereunder and any other  securities  laws or regulations in connection with any
repayment at the option of the holder.

         Indiana  Gas may at any time  purchase  notes at any price or prices in
the open  market or  otherwise.  Notes so  purchased  by Indiana Gas may, at the
discretion  of Indiana Gas, be held,  resold or  surrendered  to the trustee for
cancellation.


                                                        S-8



Interest

         Each interest-bearing note will bear interest from the date of issue at
the rate per annum or, in the case of a  floating  rate  note,  pursuant  to the
interest  rate  formula  stated  in the  applicable  note and in the  applicable
pricing supplement until the principal of the note is paid or made available for
payment.  Interest  payments  on fixed rate notes and  floating  rate notes will
equal  the  amount  of  interest  accrued  from and  including  the  immediately
preceding  interest  payment date in respect of which  interest has been paid or
made  available  for  payment  or from and  including  the date of issue,  if no
interest has been paid or made  available  for payment with respect to the note,
to, but excluding,  the related  interest  payment date or the Maturity Date, as
the case may be.

         Interest  will be  payable in arrears  on each  interest  payment  date
specified  in the  applicable  pricing  supplement  on which an  installment  of
interest is due and  payable  and on the  Maturity  Date.  The first  payment of
interest on any note  originally  issued  between a regular  record date and the
related  interest  payment  date  will  be  made on the  interest  payment  date
immediately  following the next succeeding regular record date to the registered
holder on the next succeeding  regular record date. The regular record date will
be the  fifteenth  calendar  day,  whether  or not a Business  Day,  immediately
preceding the related interest payment date.

         As used herein,  "Business Day" means any day, other than a Saturday or
Sunday,  that is neither a legal holiday nor a day on which commercial banks are
authorized  or required by law,  regulation  or executive  order to close in The
City of New York; provided,  however, with respect to Notes as to which LIBOR is
an  applicable  interest  rate basis,  that day is also a London  Business  Day.
"London  Business  Day"  means a day on  which  commercial  banks  are  open for
business  (including  dealings  in the  Designated  LIBOR  Currency  (as defined
below)) in London.

         Fixed Rate Notes

         Unless otherwise specified in the applicable pricing  supplement,  each
fixed rate note will bear  interest from the date of issue at the rate per annum
stated on the face of the note until the principal amount of the note is paid or
made available for payment. Unless otherwise specified in the applicable pricing
supplement,  interest  on fixed rate notes  will be  computed  on the basis of a
360-day year of twelve 30-day months.

         If any interest  payment date or the Maturity Date of a fixed rate note
falls on a day that is not a Business  Day,  the related  payment of  principal,
premium, if any, or interest will be made on the next succeeding Business Day as
if made on the date the  applicable  payment was due and no interest will accrue
on the amount  payable from and after the interest  payment date or the Maturity
Date,  as the case may be, to the date of such  payment  on the next  succeeding
Business Day.


                                                       S-9



         Floating Rate Notes

         Interest on floating  rate notes will be determined by reference to the
applicable  Interest Rate Basis or Interest Rate Bases, which may be one or more
of the following:

         o        the CD Rate,

         o        the CMT Rate,

         o        the Commercial Paper Rate,

         o        the Eleventh District Cost of Funds Rate,

         o        the Federal Funds Rate,

         o        LIBOR,

         o        the Prime Rate,

         o        the Treasury Rate, or

         o        any other Interest Rate Basis or interest rate formula that is
                  specified in the applicable pricing supplement.

         A  floating  rate note may bear  interest  with  respect to two or more
Interest Rate Bases.

         Terms. Each applicable pricing supplement will specify the terms of the
floating rate note being delivered, including the following:

         o        whether the floating rate note is:

                  o        a "Regular Floating Rate Note,"

                  o        an "Inverse Floating Rate Note" or

                  o        a "Floating Rate/Fixed Rate Note,"

         o        the Interest Rate Basis or Bases,

         o        the Initial Interest Rate,

         o        the Interest Reset Dates,

         o        the interest payment dates,

                                                       S-10






         o        the period to maturity of the  instrument or  obligation  with
                  respect  to which the  Interest  Rate  Basis or Bases  will be
                  calculated (the "Index Maturity"),

         o        the Maximum Interest Rate and Minimum Interest Rate, if any,

         o        the number of basis points to be added to or  subtracted  from
                  the related Interest Rate Basis or Bases (the "Spread"),

         o        the percentage of the related  Interest Rate Basis or Bases by
                  which the Interest  Rate Basis or Bases will be  multiplied to
                  determine   the   applicable   interest   rate  (the   "Spread
                  Multiplier"),

         o        if one or more of the specified  Interest Rate Bases is LIBOR,
                  the Designated  LIBOR Currency and the Designated  LIBOR Page,
                  and

         o        if one or more of the specified Interest Rate Bases is the CMT
                  Rate,  the  Designated  CMT Telerate Page and  Designated  CMT
                  Maturity Index.

         The interest  rate borne by the floating  rate notes will be determined
as follows:

         Regular Floating Rate Notes

         Unless a floating rate note is designated as a Floating Rate/Fixed Rate
Note,  an Inverse  Floating  Rate Note or as having an  addendum  attached or as
having "other  provisions" apply relating to a different  interest rate formula,
it will  be a  Regular  Floating  Rate  Note  and,  except  as  described  in an
applicable  pricing  supplement,  will bear  interest at the rate  determined by
reference to the applicable Interest Rate Basis or Bases:

         o        plus or minus the applicable Spread, if any, and/or

         o        multiplied by the applicable Spread Multiplier, if any.

         Floating Rate/Fixed Rate Notes

         If a floating rate note is designated  as a "Floating  Rate/Fixed  Rate
Note,"  it will  bear  interest  at the  rate  determined  by  reference  to the
applicable Interest Rate Basis or Bases:

         o        plus or minus the applicable Spread, if any, and/or

         o        multiplied by the applicable Spread Multiplier, if any.

Commencing on the first  Interest  Reset Date, the rate at which interest on the
applicable  Floating  Rate/Fixed  Rate Note will be payable  will be reset as of
each Interest Reset Date; provided, however, that:

                                                       S-11






         o        the  interest  rate in effect for the period  from the date of
                  issue to the first  Interest  Reset  Date will be the  Initial
                  Interest Rate, and

         o        the interest rate in effect commencing on, and including,  the
                  date on which interest  begins to accrue on a fixed rate basis
                  to maturity  will be the Fixed  Interest  Rate, if the rate is
                  specified in the applicable pricing supplement, or if no Fixed
                  Interest Rate is specified, the interest rate in effect on the
                  Floating Rate/Fixed Rate Note on the day immediately preceding
                  the date on which  interest  begins to accrue on a fixed  rate
                  basis.

         Inverse Floating Rate Notes

         If a floating  rate note is  designated  as an "Inverse  Floating  Rate
Note,"  except as  described  below,  it will bear  interest  equal to the Fixed
Interest  Rate  specified  in the  related  pricing  supplement  minus  the rate
determined by reference to the applicable Interest Rate Basis or Bases:

         o        plus or minus the applicable Spread, if any, and/or

         o        multiplied by the applicable Spread Multiplier, if any;

provided,  however,  that unless otherwise  specified in the applicable  pricing
supplement,  the interest rate on the applicable Inverse Floating Rate Note will
not be less than zero percent.  Commencing on the first Interest Reset Date, the
rate at which interest on the applicable  Inverse  Floating Rate Note is payable
will be  Reset as of each  Interest  Reset  Date;  provided,  however,  that the
interest  rate in  effect  for the  period  from the date of issue to the  first
Interest Reset Date will be the Initial Interest Rate.

         Unless otherwise  specified in the applicable pricing  supplement,  the
interest  rate with respect to each  interest  rate basis will be  determined in
accordance with the applicable provisions below. Except as set forth above or in
the applicable pricing supplement, the interest rate in effect on each day shall
be (i) if that day is an Interest  Reset Date (as defined  below),  the interest
rate  determined  as of the  Interest  Determination  Date  (as  defined  below)
immediately  preceding  such  Interest  Reset Date or (ii) if that day is not an
Interest  Reset  Date,   the  interest  rate   determined  as  of  the  Interest
Determination  Date  immediately  preceding the most recent Interest Reset Date;
provided, however, that the interest rate in effect for the period from the date
of issue to the first  Interest  Reset Date will be the  Initial  Interest  Rate
specified in the applicable pricing supplement.

         Interest Reset Dates.  The applicable  pricing  supplement will specify
the dates on which the interest  rate on the related  floating rate note will be
reset (each,  an  "Interest  Reset  Date").  Unless  otherwise  specified in the
applicable pricing supplement,  the Interest Reset Dates will be, in the case of
floating rate notes which reset:


                                                       S-12






         o        daily -- each Business Day;

         o        weekly -- the  Wednesday of each week,  with the  exception of
                  weekly reset floating rate notes as to which the Treasury Rate
                  is an  applicable  Interest  Rate Basis,  which will reset the
                  Tuesday of each week, except as described below;

         o        monthly  -- the  third  Wednesday  of  each  month,  with  the
                  exception of monthly reset floating rate notes as to which the
                  Eleventh District Cost of Funds Rate is an applicable Interest
                  Rate Basis,  which will reset on the first calendar day of the
                  month;

         o        quarterly -- the third Wednesday of March, June, September and
                  December of each year;

         o        semiannually   --  the  third  Wednesday  of  the  two  months
                  specified in the applicable pricing supplement; and

         o        annually -- the third  Wednesday of the month specified in the
                  applicable pricing supplement.

         If any Interest  Reset Date for any floating rate note would  otherwise
be a day that is not a Business Day, the applicable  Interest Reset Date will be
postponed to the next  succeeding day that is a Business Day, except that in the
case of a floating  rate note as to which LIBOR is an  applicable  Interest Rate
Basis, if the Business Day falls in the next succeeding calendar month, then the
Interest Reset Date will be the immediately preceding Business Day. In addition,
in the case of a floating rate note for which the Treasury Rate is an applicable
Interest Rate Basis, if the Interest  Determination Date would otherwise fall on
an  Interest  Reset  Date,  then the  applicable  Interest  Reset  Date  will be
postponed to the next succeeding Business Day.

         Maximum and Minimum  Interest Rates. A floating rate note may also have
either or both of the following:

         o        a maximum  numerical  limitation,  or ceiling,  on the rate at
                  which  interest  may  accrue  during  any  interest  period (a
                  "Maximum Interest Rate"), and

         o        a minimum numerical limitation, or floor, on the rate at which
                  interest  may accrue  during any period (a  "Minimum  Interest
                  Rate").

         Interest Payments.  Each floating rate note will bear interest from the
date of issue at the rates specified in the applicable  floating rate note until
the  principal of the  applicable  note is paid or made  available  for payment.
Except as provided below or in the applicable pricing  supplement,  the interest
payment  dates  with  respect  to  floating  rate  notes will be, in the case of
floating rate notes which reset:

                                                       S-13






         o        daily,  weekly or monthly -- the third Wednesday of each month
                  or on the  third  Wednesday  of  March,  June,  September  and
                  December of each year, as specified in the applicable  pricing
                  supplement;

         o        quarterly -- the third Wednesday of March, June, September and
                  December of each year;

         o        semiannually  -- the third Wednesday of the two months of each
                  year specified in the applicable pricing supplement;

         o        annually  -- the  third  Wednesday  of the  month of each year
                  specified in the applicable pricing supplement; and

         o        the Maturity Date.

         If any interest  payment date for any floating rate note other than the
Maturity Date, would otherwise be a day that is not a Business Day, the interest
payment date will be postponed to the next succeeding day that is a Business Day
except  that in the  case  of a  floating  rate  note as to  which  LIBOR  is an
applicable Interest Rate Basis, if the Business Day falls in the next succeeding
calendar  month,  the applicable  interest  payment date will be the immediately
preceding  Business Day. If the Maturity Date of a floating rate note falls on a
day that is not a Business Day, the payment of principal,  premium,  if any, and
interest  will be made on the next  succeeding  Business Day, and no interest on
that payment will accrue for the period from and after the Maturity  Date to the
date of that payment on the next succeeding Business Day.

         All  percentages  resulting from any calculation on floating rate notes
will be rounded to the nearest one  hundred-thousandth  of a  percentage  point,
with five  one-millionths  of a percentage point rounded  upwards.  For example,
9.876545%,  or .09876545,  would be rounded to 9.87655%, or .0987655. All dollar
amounts used in or resulting from any calculation on floating rate notes will be
rounded to the nearest cent with one-half cent being rounded upward.

         With respect to each floating rate note, accrued interest is calculated
by  multiplying  its  principal  amount by an accrued  interest  factor.  Unless
otherwise specified in the applicable pricing  supplement,  the accrued interest
factor is computed by adding the interest factor  calculated for each day in the
period for which accrued interest is being calculated.

         o        In the case of notes for  which an  applicable  Interest  Rate
                  Basis is the CD Rate, the Commercial  Paper Rate, the Eleventh
                  District Cost of Funds Rate, the Federal Funds Rate,  LIBOR or
                  the  Prime  Rate,  the  interest  factor  for each day will be
                  computed by dividing the interest rate applicable to
                  each day by 360.

         o        In the case of notes for  which an  applicable  Interest  Rate
                  Basis  is the CMT  Rate or the  Treasury  Rate,  the  interest
                  factor for each day will be

                                                       S-14






                  computed by dividing the interest rate  applicable to each day
                  by the actual number of days in the year.

         o        The  interest  factor  for  floating  rate notes for which the
                  interest  rate is  calculated  with  reference  to two or more
                  Interest  Rate Bases will be  calculated in each period in the
                  same  manner as if only one of the  applicable  Interest  Rate
                  Bases applied.

         Interest  Determination  Dates.  The interest  rate  applicable to each
interest reset period commencing on the Interest Reset Date with respect to that
interest reset period will be the rate determined as of the applicable "Interest
Determination  Date" and calculated on or prior to the calculation date referred
to below.

         o        The Interest  Determination  Date with respect to the CD Rate,
                  the CMT Rate,  the  Commercial  Paper Rate,  the Federal Funds
                  Rate  and the  Prime  Rate  will be the  second  Business  Day
                  preceding each Interest Reset Date for the related note.

         o        The Interest  Determination  Date with respect to the Eleventh
                  District  Cost of Funds Rate will be the last  working  day of
                  the month  immediately  preceding  each Interest Reset Date on
                  which the Federal  Home Loan Bank of San  Francisco  publishes
                  the Index, as defined below.

         o        The Interest  Determination Date with respect to LIBOR will be
                  the second London  Business Day preceding  each Interest Reset
                  Date;  unless the Designated  LIBOR Currency is British pounds
                  sterling,  in which case the Interest  Determination Date will
                  be the applicable Interest Reset Date.

         o        The Interest  Determination  Date with respect to the Treasury
                  Rate will be the day in the week in which the related Interest
                  Reset  Date  falls on which day  Treasury  Bills,  as  defined
                  below,  are normally  auctioned.  Treasury  Bills are normally
                  sold at  auction on Monday of each  week,  unless  Monday is a
                  legal  holiday,  in which case the auction is normally held on
                  the immediately following Tuesday, except that the auction may
                  be held on the preceding Friday; provided, however, that if an
                  auction  is held  on the  Friday  of the  week  preceding  the
                  applicable   Interest   Reset  Date,   the  related   Interest
                  Determination Date will be the preceding Friday; and provided,
                  further,  that if an auction falls on any Interest Reset Date,
                  then the related Interest Reset Date will instead be the first
                  business day following the auction.

         o        The Interest  Determination Date pertaining to a floating rate
                  note the interest rate of which is determined  with  reference
                  to two or more Interest Rate Bases will be the latest business
                  day which is at least two business

                                                       S-15






                  days  before  the  applicable  Interest  Reset  Date  for  the
                  applicable  floating  rate note on which each  Interest  Reset
                  Basis  is  determinable.  Each  Interest  Rate  Basis  will be
                  determined  as of the  Interest  Determination  Date,  and the
                  applicable  interest  rate  will take  effect  on the  related
                  Interest Reset Date.

         Calculation Date. Unless otherwise  provided in the applicable  pricing
supplement,  the trustee under the indenture will be the calculation agent. Upon
the request of the holder of any floating rate note, the calculation  agent will
provide the interest rate then in effect and, if  determined,  the interest rate
that will  become  effective  as a result of a  determination  made for the next
succeeding  Interest Reset Date with respect to that floating rate note.  Unless
otherwise specified in the applicable pricing supplement,  the calculation date,
if applicable, pertaining to any Interest Determination Date will be the earlier
of:

         o        the  tenth   calendar  day  after  the   applicable   Interest
                  Determination  Date,  or, if the tenth  calendar  day is not a
                  Business Day, the next succeeding Business Day; or

         o        the Business Day immediately preceding the applicable Interest
                  Payment Date or the Maturity Date, as the case may be.

         CD Rate. CD Rate Notes will bear interest at the rates, calculated with
reference  to the CD Rate  and the  Spread  and/or  Spread  Multiplier,  if any,
specified  in the  applicable  CD  Rate  Notes  and in  any  applicable  pricing
supplement.

         "CD Rate" means

         (1)      the rate on the  applicable  Interest  Determination  Date for
                  negotiable United States dollar certificates of deposit having
                  the  Index  Maturity   specified  in  the  applicable  pricing
                  supplement  as published  in H.15(519)  under the heading "CDs
                  (secondary market)," or

         (2)      if  the  rate  referred  to in  clause  (1)  above  is  not so
                  published  by 3:00 P.M.,  New York City time,  on the  related
                  calculation   date,  the  rate  on  the  applicable   Interest
                  Determination   Date  for  negotiable   United  States  dollar
                  certificates of deposit of the Index Maturity specified in the
                  applicable  pricing  supplement  as  published  in H.15  Daily
                  Update,  or other  recognized  electronic  source used for the
                  purpose of displaying the applicable  rate,  under the caption
                  "CDs (secondary market)," or

         (3)      if the rate  referred to in clause (2) is not so  published by
                  3:00 P.M.,  New York City  time,  on the  related  calculation
                  date, the rate on the applicable  Interest  Determination Date
                  calculated by the calculation  agent as the arithmetic mean of
                  the secondary market offered rates as of 10:00 A.M.,

                                                       S-16






                  New York City time, on the applicable  Interest  Determination
                  Date, of three leading non-bank  dealers in negotiable  United
                  States dollar  certificates of deposit in The City of New York
                  (which may include an agent or its affiliates) selected by the
                  calculation   agent  for   negotiable   United  States  dollar
                  certificates  of deposit of major  United  States money market
                  banks for negotiable  certificates of deposit with a remaining
                  maturity  closest  to  the  Index  Maturity  specified  in the
                  applicable   pricing   supplement   in  an   amount   that  is
                  representative for a single transaction in that market at that
                  time, or

         (4)      if the  dealers  selected  by the  calculation  agent  are not
                  quoting  as  mentioned  in clause  (3)  above,  the CD Rate in
                  effect on the applicable Interest Determination Date.

         "H.15(519)"  means  the  weekly   statistical   release  designated  as
H.15(519), or any successor publication,  published by the Board of Governors of
the Federal Reserve System.

         "H.15 Daily  Update"  means the daily  update of  H.15(519),  available
through  the  world-  wide-web  site of the Board of  Governors  of the  Federal
Reserve   System   at   http://www.bog.frb.fed.us/releases/h15/update,   or  any
successor site or publication.

         CMT Rate.  CMT Rate Notes will bear  interest at the rates,  calculated
with reference to the CMT Rate and the Spread and/or Spread Multiplier,  if any,
specified  in the  applicable  CMT  Rate  Notes  and in any  applicable  pricing
supplement.

         "CMT Rate" means

         (1)      the rate  displayed on the  Designated CMT Telerate Page under
                  the  caption  "...Treasury  Constant   Maturities...   Federal
                  Reserve  Board  Release  H.15...  Mondays  Approximately  3:45
                  P.M.," under the column for the  Designated CMT Maturity Index
                  for

                  (a)      if the  Designated  CMT Telerate  Page is 7051 or any
                           other page as may replace that specified page on that
                           service, the applicable Interest  Determination Date,
                           and

                  (b)      if the  Designated  CMT Telerate  Page is 7052 or any
                           other page as may replace that specified page on that
                           service,  the  weekly  or  the  monthly  average,  as
                           specified in the applicable pricing  supplement,  for
                           the  week  or  the  month,   as   applicable,   ended
                           immediately  preceding  the  week  or the  month,  as
                           applicable,    in   which   the   related    Interest
                           Determination Date falls, or


                                                       S-17






         (2)      if the rate  referred to in clause (1) is no longer  displayed
                  on the relevant page or is not so displayed by 3:00 P.M.,  New
                  York City time, on the related  calculation date, the treasury
                  constant  maturity rate for the  Designated CMT Maturity Index
                  published in H.15(519), or

         (3)      if the rate  referred to in clause (2) is no longer  published
                  or is not  published by 3:00 P.M.,  New York City time, on the
                  related  calculation date, the treasury constant maturity rate
                  for the Designated CMT Maturity  Index, or other United States
                  Treasury rate for the Designated CMT Maturity  Index,  for the
                  applicable  Interest  Determination  Date with  respect to the
                  applicable  Interest  Reset Date as may then be  published  by
                  either the Board of Governors of the Federal Reserve System or
                  the  United  States   Department  of  the  Treasury  that  the
                  calculation  agent  determines  to be  comparable  to the rate
                  formerly  displayed on the  Designated  CMT Telerate  Page and
                  published in H.15(519), or

         (4)      if the rate  referred to in clause (3) is not so  published by
                  3:00 P.M., New York City time, on the  applicable  calculation
                  date, the rate on the applicable  Interest  Determination Date
                  calculated  by the  calculation  agent as a yield to maturity,
                  based on the arithmetic  mean of the secondary  market offered
                  rates as of  approximately  3:30 P.M.,  New York City time, on
                  the applicable Interest Determination Date reported, according
                  to their  written  records,  by three leading  primary  United
                  States government  securities dealers in The City of New York,
                  which  may  include  an  agent  or  its  affiliates  (each,  a
                  "Reference  Dealer"),  selected by the calculation  agent from
                  five Reference Dealers selected by the calculation agent after
                  eliminating  the  highest  quotation,  or,  in  the  event  of
                  equality,  one of the highest, and the lowest quotation or, in
                  the  event  of  equality,  one of the  lowest,  for  the  most
                  recently issued direct  noncallable  fixed rate obligations of
                  the United States ("Treasury Notes") with an original maturity
                  of  approximately  the  Designated  CMT  Maturity  Index and a
                  remaining  term to maturity  of not less than such  Designated
                  CMT Maturity Index minus one year, or

         (5)      if the calculation  agent is unable to obtain three applicable
                  Treasury  Note  quotations  as referred to in clause (4),  the
                  rate on the applicable Interest  Determination Date calculated
                  by the  calculation  agent as a yield to maturity based on the
                  arithmetic  mean of the secondary  market  offered rates as of
                  approximately 3:30 P.M., New York City time, on the applicable
                  Interest  Determination Date of three Reference Dealers in The
                  City of New York selected by the  calculation  agent from five
                  Reference  Dealers  selected  by the  calculation  agent after
                  eliminating  the  highest   quotation  or,  in  the  event  of
                  equality,  one of the highest and the lowest  quotation or, in
                  the event of equality, one of the lowest, for Treasury Notes

                                                       S-18






                  with an  original  maturity of the number of years that is the
                  next  highest  to the  Designated  CMT  Maturity  Index  and a
                  remaining  term to  maturity  closest  to the  Designated  CMT
                  Maturity Index and in an amount of at least $100 million, or

         (6)      if three or four and not  five of the  Reference  Dealers  are
                  quoting as referred  to in clause (5) above,  the rate will be
                  calculated by the calculation  agent as the arithmetic mean of
                  the  offered  rates  obtained  and neither the highest nor the
                  lowest of quotes will be eliminated, or

         (7)      if  fewer  than  three  Reference   Dealers  selected  by  the
                  calculation  agent are quoting as mentioned in clause (6), the
                  CMT Rate in effect on the  applicable  Interest  Determination
                  Date.

         If two Treasury Notes with an original  maturity as described in clause
(5) have  remaining  terms to  maturity  equally  close  to the  Designated  CMT
Maturity Index,  the calculation  agent will obtain from five Reference  Dealers
quotations for the Treasury Notes with the shorter remaining term to maturity.

         "Designated  CMT Telerate  Page" means the display on Bridge  Telerate,
Inc. or any successor  service on the page specified in the  applicable  pricing
supplement,  or any  other  page  as may  replace  that  specified  page on that
service,  for the purpose of displaying Treasury Constant Maturities as reported
in H.15(519),  or, if no page is specified in the applicable pricing supplement,
page 7052.

         "Designated  CMT Maturity  Index" means the original period to maturity
of the U.S.  Treasury  securities,  either  1, 2, 3, 5, 7, 10,  20 or 30  years,
specified in the  applicable  pricing  supplement  with respect to which the CMT
Rate will be  calculated  or, if no  maturity  is  specified  in the  applicable
pricing supplement, 2 years.

         Commercial  Paper Rate.  Commercial Paper Rate Notes will bear interest
at the rates,  calculated  with reference to the  Commercial  Paper Rate and the
Spread and/or Spread Multiplier,  if any, specified in the applicable Commercial
Paper Rate Notes and in any applicable pricing supplement.

         "Commercial Paper Rate" means

         (1)      the   Money   Market   Yield   on  the   applicable   Interest
                  Determination Date of the rate for commercial paper having the
                  Index Maturity  specified in the applicable pricing supplement
                  published   in   H.15(519)   under  the  caption   "Commercial
                  Paper-Nonfinancial," or

         (2)      if the rate  described  in clause (1) is not so  published  by
                  3:00 P.M.,  New York City  time,  on the  related  calculation
                  date, the Money Market Yield

                                                       S-19






                  of the rate on the applicable Interest  Determination Date for
                  commercial  paper having the Index  Maturity  specified in the
                  applicable pricing supplement  published in H.15 Daily Update,
                  or other recognized  electronic source used for the purpose of
                  displaying the applicable rate, under the caption  "Commercial
                  Paper-Nonfinancial," or

         (3)      if the rate is referred  to in clause (2) is not so  published
                  by 3:00 P.M.,  New York City time, on the related  calculation
                  date, the rate on the applicable  Interest  Determination Date
                  calculated by the calculation  agent as the Money Market Yield
                  of the arithmetic  mean of the offered rates at  approximately
                  11:00 A.M.,  New York City time,  on the  applicable  Interest
                  Determination  Date of three leading  dealers of United States
                  dollar  commercial  paper in The City of New  York,  which may
                  include  an  agent  and  its   affiliates,   selected  by  the
                  calculation  agent  for  commercial  paper  having  the  Index
                  Maturity specified in the applicable pricing supplement placed
                  for  industrial  issuers  whose  bond  rating  is "Aa," or the
                  equivalent,  from a nationally  recognized  statistical rating
                  organization, or

         (4)      if the  dealers  selected  by the  calculation  agent  are not
                  quoting as mentioned in clause (3), the Commercial  Paper Rate
                  in effect on the applicable Interest Determination Date.

         "Money  Market Yield" means a yield  calculated in accordance  with the
following formula and expressed as a percentage:



Money Market             =                     D x 360          x   100
                                        ----------------------
                                           360 - ( D x M )

where "D" refers to the applicable per annum rate for commercial paper quoted on
a bank discount  basis and expressed as a decimal,  and "M" refers to the actual
number of days in the applicable interest reset period.

         Eleventh  District Cost of Funds Rate.  Eleventh District Cost of Funds
Rate Notes will bear  interest at the rates,  calculated  with  reference to the
Eleventh District Cost of Funds Rate and the Spread and/or Spread Multiplier, if
any, specified in the applicable  Eleventh District Cost of Funds Rate Notes and
in any applicable pricing supplement.

         "Eleventh District Cost of Funds Rate" means

         (1)      the rate equal to the monthly  weighted  average cost of funds
                  for the  calendar  month  immediately  preceding  the month in
                  which the applicable Interest  Determination Date falls as set
                  forth  under the  caption  "11th  District"  on the display on
                  Bridge Telerate, Inc. or any successor service

                                                       S-20






                  on page 7058 or any other page as may replace  that  specified
                  page on that service ("Telerate Page 7058"), as of 11:00 A.M.,
                  San Francisco time, on the applicable  Interest  Determination
                  Date, or

         (2)      if the rate  referred  to in  clause  (1) does not  appear  on
                  Telerate Page 7058 on the related Interest Determination Date,
                  the  monthly  weighted  average  cost of funds  paid by member
                  institutions  of the Eleventh  Federal Home Loan Bank District
                  that was most recently  announced (the "Index") by the Federal
                  Home Loan Bank of San  Francisco  as the cost of funds for the
                  calendar month immediately  preceding the applicable  Interest
                  Determination Date, or

         (3)      if the  Federal  Home  Loan  Bank of San  Francisco  fails  to
                  announce  the  Index  on or  before  the  applicable  Interest
                  Determination   Date  for  the  calendar   month   immediately
                  preceding the  applicable  Interest  Determination  Date,  the
                  Eleventh  District  Cost  of  Funds  Rate  in  effect  on  the
                  applicable Interest Determination Date.

         Federal Funds Rate.  Federal Funds Rate Notes will bear interest at the
rates, calculated with reference to the Federal Funds Rate and the Spread and/or
Spread Multiplier,  if any, specified in the applicable Federal Funds Rate Notes
and in any applicable pricing supplement.

         "Federal Funds Rate" means

         (1)      the rate on the  applicable  Interest  Determination  Date for
                  United States  dollar  federal funds as published in H.15(519)
                  under the heading "Federal Funds (Effective)," as displayed on
                  Bridge Telerate,  Inc. or any successor service on page 120 or
                  any other  page as may  replace  that  specified  page on that
                  service ("Telerate Page 120"), or

         (2)      if the rate  referred  to in  clause  (1) does not  appear  on
                  Telerate  Page 120 or is not so  published  by 3:00 P.M.,  New
                  York City time, on the related  calculation  date, the rate on
                  the applicable  Interest  Determination Date for United States
                  dollar federal funds published in H.15 Daily Update,  or other
                  recognized   electronic   source   used  for  the  purpose  of
                  displaying the  applicable  rate,  under the caption  "Federal
                  Funds (Effective)," or

         (3)      if the rate  referred  to in  clause  (2) does not  appear  on
                  Telerate  Page 120 or is not so  published  by 3:00 P.M.,  New
                  York City time, on the related  calculation  date, the rate on
                  the applicable  Interest  Determination Date calculated by the
                  calculation  agent as the arithmetic mean of the rates for the
                  last  transaction  in overnight  United States dollar  federal
                  funds  arranged  by three  leading  brokers  of United  States
                  dollar  federal  funds  transactions  in The City of New York,
                  which may include the agent or its affiliates,

                                                       S-21






                  selected by the  calculation  agent before 9:00 A.M., New York
                  City time, on the applicable Interest Determination Date, or

         (4)      if the  brokers  selected  by the  calculation  agent  are not
                  quoting as mentioned in clause (3), the Federal  Funds Rate in
                  effect on the applicable Interest Determination Date.

         LIBOR.  LIBOR Notes will bear  interest at the rates,  calculated  with
reference to LIBOR and the Spread and/or Spread Multiplier, if any, specified in
the applicable LIBOR Notes and in any applicable pricing supplement.

         "LIBOR" means

         (1)      if "LIBOR  Telerate" is specified  in the  applicable  pricing
                  supplement or if neither "LIBOR Reuters" nor "LIBOR  Telerate"
                  is  specified  in the  applicable  pricing  supplement  as the
                  method for  calculating  LIBOR,  the rate for  deposits in the
                  Designated LIBOR Currency having the Index Maturity  specified
                  in  the  applicable  pricing  supplement,  commencing  on  the
                  applicable  Interest Reset Date that appears on the Designated
                  LIBOR Page as of 11:00 A.M.,  London time,  on the  applicable
                  Interest Determination Date, or

         (2)      if "LIBOR  Reuters" is  specified  in the  applicable  pricing
                  supplement,  the  arithmetic  mean of the  offered  rates  for
                  deposits in the  Designated  LIBOR  Currency  having the Index
                  Maturity  specified  in  the  applicable  pricing  supplement,
                  commencing on the applicable  Interest Reset Date, that appear
                  on the  Designated  LIBOR  Page  specified  in the  applicable
                  pricing  supplement  as of 11:00  A.M.,  London  time,  on the
                  applicable Interest Determination Date; provided, that, if the
                  Designated  LIBOR Page by its terms provides only for a single
                  rate, then the single rate will be used, or

         (3)      with respect to a LIBOR Interest  Determination  Date on which
                  fewer than two offered  rates appear,  or no rate appears,  as
                  the case may be, on the designated  LIBOR Page as specified in
                  clauses (1) and (2), respectively,  the rate calculated by the
                  calculation  agent  as the  arithmetic  mean of at  least  two
                  quotations  obtained by the calculation agent after requesting
                  the principal  London offices of each of four major  reference
                  banks, which may include affiliates of an agent, in the London
                  interbank  market to provide  the  calculation  agent with its
                  offered   quotation  for  deposits  in  the  Designated  LIBOR
                  Currency for the period of the Index Maturity specified in the
                  applicable  pricing  supplement,  commencing on the applicable
                  Interest  Reset Date,  to prime banks in the London  interbank
                  market  at  approximately  11:00  A.M.,  London  time,  on the
                  applicable  Interest  Determination  Date  and in a  principal
                  amount that is

                                                       S-22






                  representative  for a  single  transaction  in the  Designated
                  LIBOR Currency in that market at that time, or

         (4)      if fewer than two quotations  referred to in clause (3) are so
                  provided,  the rate on the applicable  Interest  Determination
                  Date  calculated by the  calculation  agent as the  arithmetic
                  mean of the rates quoted at  approximately  11:00 A.M., in the
                  applicable   Principal  Financial  Center  on  the  applicable
                  Interest  Determination  Date by  three  major  banks  in such
                  Principal  Financial Center selected by the calculation agent,
                  which may  include  affiliates  of an agent,  for loans in the
                  Designated  LIBOR Currency to leading  European banks,  having
                  the  Index  Maturity  designated  in  the  applicable  pricing
                  supplement  and in a principal  amount that is  representative
                  for a single transaction in that market at that time, or

         (5)      if the  banks so  selected  by the  calculation  agent are not
                  quoting as  mentioned  in clause  (4),  LIBOR in effect on the
                  applicable Interest Determination Date.

         "Designated  LIBOR  Currency"  means  the  currency  specified  in  the
applicable  pricing  supplement as to which LIBOR shall be calculated  or, if no
such currency is specified in the applicable pricing  supplement,  United States
dollars.

         "Designated LIBOR Page" means either:

         o        if "LIBOR  Telerate" is designated in the  applicable  pricing
                  supplement or neither "LIBOR Reuters" nor "LIBOR  Telerate" is
                  specified in the applicable  pricing  supplement as the method
                  for calculating LIBOR, the display on Bridge Telerate, Inc. or
                  any  successor  service on the page  specified in such pricing
                  supplement  or any page as may replace the  specified  page on
                  that  service  for  the  purpose  of  displaying   the  London
                  interbank  rates  of  major  banks  for the  Designated  LIBOR
                  Currency, or

         o        if "LIBOR  Reuters" is  specified  in the  applicable  pricing
                  supplement,  the  display on the Reuter  Monitor  Money  Rates
                  Service or any successor  service on the page specified in the
                  applicable pricing supplement or any other page as may replace
                  the  specified  page  on  that  service  for  the  purpose  of
                  displaying the London  interbank  rates of major banks for the
                  Designated LIBOR Currency.

         "Principal  Financial  Center" means the capital city of the country to
which the Designated LIBOR Currency relates,  except that with respect to United
States dollars,  Australian  dollars,  Canadian dollars,  Deutsche marks,  Dutch
guilders, Italian lire, Portuguese escudos, South African rand and Swiss francs,
the "Principal Financial Center" shall be The City of New

                                                       S-23






York, Sydney, Toronto,  Frankfurt,  Amsterdam,  Milan, London,  Johannesburg and
Zurich, respectively.

         Prime  Rate.  Prime  Rate  Notes  will  bear  interest  at  the  rates,
calculated  with  reference  to the  Prime  Rate and the  Spread  and/or  Spread
Multiplier,  if any,  specified  in the  applicable  Prime  Rate  Notes  and any
applicable pricing supplement.

         "Prime Rate" means

         (1)      the  rate on the  applicable  Interest  Determination  Date as
                  published in H.15(519) under the heading "Bank Prime Loan," or

         (2)      if the rate  referred to in clause (1) is not so  published by
                  3:00 P.M.,  New York City  time,  on the  related  calculation
                  date, the rate on the applicable  Interest  Determination Date
                  published  in H.15  Daily  Update,  or such  other  recognized
                  electronic  source  used for the  purpose  of  displaying  the
                  applicable rate under the caption "Bank Prime Loan," or

         (3)      if the rate  referred to in clause (2) is not so  published by
                  3:00 P.M.,  New York City  time,  on the  related  calculation
                  date,  the rate  calculated  by the  calculation  agent as the
                  arithmetic mean of the rates of interest publicly announced by
                  at least four banks that appear on the Reuters Screen US PRIME
                  1 Page as the  particular  bank's  prime rate or base  lending
                  rate as of 11:00 A.M.,  New York City time, on the  applicable
                  Interest Determination Date, or

         (4)      if fewer than four rates  referred  to in clause (3) so appear
                  on the  Reuters  Screen  US  PRIME  1  Page,  the  rate on the
                  applicable  Interest  Determination  Date  calculated  by  the
                  calculation agent as the arithmetic mean of the prime rates or
                  base lending rates quoted on the basis of the actual number of
                  days in the year  divided by a 360-day year as of the close of
                  business  on the  applicable  Interest  Determination  Date by
                  three major banks,  which may include  affiliates of an agent,
                  in The City of New York selected by the calculation agent, or

         (5)      if the banks selected by the calculation agent are not quoting
                  as  mentioned  in clause (4),  the Prime Rate in effect on the
                  applicable Interest Determination Date.

         "Reuters  Screen  US PRIME 1 Page"  means  the  display  on the  Reuter
Monitor Money Rates  Service or any successor  service on the "US PRIME 1" page,
or  other  page as may  replace  the US  PRIME 1 Page on such  service,  for the
purpose of  displaying  prime rates or base lending rates of major United States
banks.


                                                       S-24






         Treasury  Rate.  Treasury  Rate Notes will bear  interest at the rates,
calculated  with  reference to the Treasury  Rate and the Spread  and/or  Spread
Multiplier,  if any, specified in the applicable  Treasury Rate Notes and in any
applicable pricing supplement.

         "Treasury Rate" means

         (1)      the rate  from the  auction  held on the  applicable  Interest
                  Determination  Date (the  "Auction") of direct  obligations of
                  the United States ("Treasury Bills") having the Index Maturity
                  specified  in the  applicable  pricing  supplement  under  the
                  caption  "INVESTMENT  RATE" on the display on Bridge Telerate,
                  Inc. or any successor  service on page 56 or any other page as
                  may replace that  specified  page on that  service  ("Telerate
                  Page 56") or page 57 or any  other  page as may  replace  that
                  specified page on that service ("Telerate Page 57"), or

         (2)      if the rate  described  in clause (1) is not so  published  by
                  3:00 P.M.,  New York City  time,  on the  related  calculation
                  date, the Bond Equivalent Yield (as defined below) of the rate
                  for the  applicable  Treasury Bills as published in H.15 Daily
                  Update,  or other  recognized  electronic  source used for the
                  purpose of displaying the applicable  rate,  under the caption
                  "U.S. Government Securities/Treasury Bills/Auction High," or

         (3)      if the rate  described  in clause (2) is not so  published  by
                  3:00 P.M.,  New York City  time,  on the  related  calculation
                  date,  the Bond  Equivalent  Yield of the auction  rate of the
                  applicable  Treasury  Bills as announced by the United  States
                  Department of the Treasury, or

         (4)      in the event  that the rate  referred  to in clause (3) is not
                  announced by the United States Department of the Treasury,  or
                  if the Auction is not held, the Bond  Equivalent  Yield of the
                  rate on the applicable Interest Determination Date of Treasury
                  Bills having the Index  Maturity  specified in the  applicable
                  pricing  supplement  published in H.15(519)  under the caption
                  "U.S. Government Securities/Treasury  Bills/Secondary Market,"
                  or

         (5)      if the rate  referred to in clause (4) is not so  published by
                  3:00 P.M.,  New York City  time,  on the  related  calculation
                  date, the rate on the applicable  Interest  Determination Date
                  of the  applicable  Treasury  Bills as published in H.15 Daily
                  Update,  or other  recognized  electronic  source used for the
                  purpose of displaying the applicable  rate,  under the caption
                  "U.S. Government Securities/Treasury  Bills/Secondary Market,"
                  or

         (6)      if the rate  referred to in clause (5) is not so  published by
                  3:00 P.M.,  New York City  time,  on the  related  calculation
                  date, the rate calculated by the calculation agent as the Bond
                  Equivalent Yield of the arithmetic mean of

                                                       S-25






                  the secondary market bid rates, as of approximately 3:30 P.M.,
                  New York City time, on the applicable  Interest  Determination
                  Date, of three primary  United  States  government  securities
                  dealers,  which  may  include  an  agent  or  its  affiliates,
                  selected by the calculation  agent,  for the issue of Treasury
                  Bills with a remaining  maturity closest to the Index Maturity
                  specified in the applicable pricing supplement, or

         (7)      if the  dealers  selected  by the  calculation  agent  are not
                  quoting as  mentioned  in clause  (6),  the  Treasury  Rate in
                  effect on the applicable Interest Determination Date.

         "Bond Equivalent Yield" means a yield calculated in accordance with the
following formula and expressed as a percentage:


Bond Equivalent Yield            =               D x N            x    100
                                               ---------
                                            360 - ( D x M )


where "D" refers to the applicable per annum rate for Treasury Bills quoted on a
bank  discount  basis,  "N"  refers to 365 or 366,  as the case may be,  and "M"
refers to the actual number of days in the applicable interest reset period.

Other Provisions; Addenda

         Any  provisions  with  respect  to an issue  of  notes,  including  the
determination  of one or more Interest Rate Bases,  the  specification of one or
more Interest Rate Bases,  the  calculation of the interest rate applicable to a
floating rate note, the applicable  interest  payment dates, the stated maturity
date,  any redemption or repayment  provisions or any other matters  relating to
the  applicable  notes may be modified by the terms as  specified  under  "Other
Provisions"  on the face of the applicable  notes or in an Addendum  relating to
the applicable notes, if so specified on the face of the applicable notes and in
the applicable pricing supplement.

Discount Notes

         Indiana  Gas may from time to time offer  notes at a price that is less
than 100% of the principal amount of the note ("Discount Notes"). Discount Notes
may not bear any interest currently or may bear interest at a rate that is below
market rates at the time of issuance.  The difference between the issue price of
a  Discount  Note  and  100%  of the  principal  amount  is  referred  to as the
"discount." On the Maturity Date, the amount payable to the holder will be equal
to the sum of (i) the issue price  (increased by any accruals of discount)  and,
in the event of any redemption of a Discount Note (if applicable), multiplied by
the  initial  redemption  percentage  (as  adjusted  by  the  annual  redemption
percentage  reduction,  if  applicable)  and (ii) any  unpaid  interest  accrued
thereon to the Maturity Date.


                                                       S-26






         Unless otherwise  specified in the applicable pricing  supplement,  for
purposes  of  determining  the  amount of  discount  that has  accrued as of any
Maturity Date,  the discount will be accrued using a constant yield method.  The
constant yield will be calculated using a 30-day month, 360-day year convention,
a compounding  period that,  except for the Initial  Period (as defined  below),
corresponds  to the  shortest  period  between  interest  payment  dates for the
applicable Discount Note (with ratable accruals within a compounding  period), a
coupon rate equal to the initial coupon rate applicable to the Discount Note and
an assumption  that the maturity of such Discount Note will not be  accelerated.
If the period from the date of issue to the initial  interest payment date for a
Discount Note (the "Initial Period") is shorter than the compounding  period for
the Discount Note, a proportionate amount of the yield for an entire compounding
period will be accrued.  If the  Initial  Period is longer than the  compounding
period,  then the period will be divided into a regular compounding period and a
short period with the short period  being  treated as provided in the  preceding
sentence.  The accrual of the applicable discount may differ from the accrual of
original  issue  discount for purposes of the Internal  Revenue Code of 1986, as
amended  (the  "Code")  certain  Discount  Notes  may not be  treated  as having
original  issue  discount  within the  meaning of the Code and notes  other than
Discount Notes may be treated as issued with original issue discount for federal
income  tax   purposes.   See  "Certain   United  States   Federal   Income  Tax
Considerations."

Amortizing Notes

         Indiana  Gas may from time to time offer  notes  ("Amortizing  Notes"),
with amounts of principal and interest payable in installments  over the term of
the notes.  Unless  otherwise  specified in the applicable  pricing  supplement,
interest on each Amortizing Note will be computed on the basis of a 360-day year
of twelve  30-day  months.  Payments  with respect to  Amortizing  Notes will be
applied  first to interest due and payable on the  Amortizing  Notes and then to
the reduction of the unpaid  principal amount of the Amortizing  Notes.  Further
information   concerning  additional  terms  and  conditions  of  any  issue  of
Amortizing Notes will be provided in the applicable pricing supplement.  A table
setting forth  repayment  information in respect of each Amortizing Note will be
included in the applicable note and the applicable pricing supplement.

Book-Entry Notes

         Description of the Global Securities

         Upon  issuance,  all notes in  book-entry  form having the same date of
issue,  interest rate or formula,  stated  maturity date and  redemption  and/or
repayment  provisions,   if  any,  and  otherwise  having  identical  terms  and
provisions will be represented by one or more fully registered global notes (the
"Global  Notes").  Each Global Note will be deposited with, or on behalf of, The
Depository  Trust  Company,  as  depository,  registered  in  the  name  of  the
depository or a nominee of the  depository.  Unless and until it is exchanged in
whole  or in part  for  notes  in  certificated  form,  no  Global  Note  may be
transferred  except as a whole by the  depository to a nominee of the depository
or by a nominee of the depository to the depository or another nominee of the

                                                       S-27



depository  or by the  depository  or any such  nominee  to a  successor  of the
depository or a nominee of the successor.

         DTC Procedures

         The following is based on information furnished by the depository:

         The  depository  will act as  securities  depository  for the  notes in
book-entry form. The notes in book-entry form will be issued as fully registered
securities  registered in the name of Cede & Co., the  depository's  partnership
nominee. One fully registered Global Note will be issued for each issue of notes
in book-entry  form, each in the aggregate  principal  amount of the issue,  and
will be deposited with the depository.

         The depository is a  limited-purpose  trust company organized under the
New York  Banking  Law, a "banking  organization"  within the meaning of the New
York  Banking  Law,  a  member  of  the  Federal  Reserve  System,  a  "clearing
corporation"  within the meaning of the New York Uniform  Commercial Code, and a
"clearing  agency"  registered  pursuant to the provisions of Section 17A of the
Securities  Exchange  Act of 1934.  The  depository  holds  securities  that its
participants  deposit with the depository.  The depository also  facilitates the
settlement among participants of securities transactions,  such as transfers and
pledges,  in deposited  securities  through electronic  computerized  book-entry
changes in  participants'  accounts,  thereby  eliminating the need for physical
movement of  securities  certificates.  Direct  participants  of the  depository
include  securities  brokers  and  dealers,  banks,  trust  companies,  clearing
corporations  and certain  other  organizations.  The  depository  is owned by a
number of its direct participants and by the New York Stock Exchange,  Inc., the
American Stock Exchange LLC, and the National Association of Securities Dealers,
Inc.  Access to the  depository's  system is also  available  to others  such as
securities brokers and dealers,  banks and trust companies that clear through or
maintain a custodial relationship with a direct participant,  either directly or
indirectly.  The rules  applicable to the depository and its participants are on
file with the Securities and Exchange Commission.

         Purchasers of notes in book-entry  form under the  depository's  system
must be made by or through direct participants,  which will receive a credit for
those  notes in  book-entry  form on the  depository's  records.  The  ownership
interest of each actual purchaser of each note in book-entry form represented by
a Global Note is, in turn, to be recorded on the records of direct  participants
and indirect participants. Beneficial owners in book-entry form will not receive
written  confirmation  from the  depository of their  purchase,  but  beneficial
owners are expected to receive written  confirmations  providing  details of the
transaction,  as well as periodic statements of their holdings,  from the direct
participants or indirect participants through which the beneficial owner entered
into  the  transaction.  Transfers  of  ownership  interests  in a  Global  Note
representing  notes in book-entry form are to be accomplished by entries made on
the books of  participants  acting on behalf of  beneficial  owners.  Beneficial
owners of a Global Note  representing  notes in book-entry form will not receive
notes in certificated form representing their ownership interests therein,

                                                       S-28






except  in the  event  that  use of the  book-entry  system  for  such  notes in
book-entry form is discontinued.

         To facilitate subsequent transfers, all Global Notes representing notes
in book-entry form which are deposited with, or on behalf of, the depository are
registered in the name of the  depository's  nominee,  Cede & Co. The deposit of
Global Notes with, or on behalf of, the depository and their registration in the
name of Cede & Co. effect no change in beneficial ownership.  The depository has
no knowledge of the actual  beneficial  owners of the Global Notes  representing
the notes in book-entry form; the depository's records reflect only the identity
of the direct  participants  to whose accounts such notes in book-entry form are
credited,  which may or may not be the beneficial  owners. The participants will
remain  responsible  for  keeping  account of their  holdings on behalf of their
customers.

         Conveyance  of notices and other  communications  by the  depository to
direct  participants,  by direct participants to indirect  participants,  and by
direct  participants  and indirect  participants to beneficial  owners,  will be
governed by  arrangements  among them,  subject to any  statutory or  regulatory
requirements as may be in effect from time to time.

         Neither the depository nor Cede & Co. will consent or vote with respect
to the Global Notes  representing  the notes in book-entry form. Under its usual
procedures,  the  depository  mails an omnibus  proxy to Indiana  Gas as soon as
possible  after the  applicable  record date.  The omnibus  proxy assigns Cede &
Co.'s consenting or voting rights to those direct participants,  identified in a
listing attached to the omnibus proxy, to whose accounts the notes in book-entry
form are credited on the applicable record date.

         Indiana Gas will make principal,  premium, if any, and/or interest,  if
any,  payments on the Global Notes  representing the notes in book-entry form in
immediately  available funds to the depository.  The depository's practice is to
credit  direct  participants'   accounts  on  the  applicable  payment  date  in
accordance  with their  respective  holdings shown on the  depository's  records
unless the depository has reason to believe that it will not receive  payment on
the applicable payment date.  Payments by participants to beneficial owners will
be governed by standing  instructions  and customary  practices,  as is the case
with  securities held for the accounts of customers in bearer form or registered
in "street name," and will be the  responsibility of the applicable  participant
and not of the depository,  the trustee or Indiana Gas, subject to any statutory
or  regulatory  requirements  as may be in effect from time to time.  Payment of
principal,  premium,  if any, and/or interest,  if any, to the depository is the
responsibility  of Indiana  Gas and the  trustee,  disbursement  of  payments to
direct   participants  will  be  the  responsibility  of  the  depository,   and
disbursement of payments to the beneficial owners will be the  responsibility of
direct participants and indirect participants.

         If applicable,  redemption  notices shall be sent to Cede & Co. If less
than all of the  notes in  book-entry  form of like  tenor  and  terms are being
redeemed,  the  depository's  practice is to  determine by lot the amount of the
interest of each direct participant in the issue to be redeemed.


                                                       S-29



         A beneficial  owner will give notice of any option to elect to have its
notes in book-entry form repaid by Indiana Gas, through its participant,  to the
trustee,  and will effect delivery of the applicable notes in book-entry form by
causing the direct  participant  to transfer the  participant's  interest in the
Global  Note notes in  book-entry  form,  on the  depository's  records,  to the
trustee.

         Management of the depository is aware that some computer  applications,
systems and the like for  processing  data  ("Systems")  that are dependent upon
calendar  dates,  including  dates before,  on, and after  January 1, 2000,  may
encounter "Year 2000 problems." The depository has informed direct  participants
and indirect  participants  and other  members of the financial  community  (the
"Industry")  that it has  developed  and is  implementing  a program so that its
Systems,  as the same relate to the timely payment of  distributions  (including
principal and interest payments) to securityholders,  book-entry deliveries, and
settlement of trades within the depository ("Depository Services"),  continue to
function  appropriately.  This  program  includes a technical  assessment  and a
remediation plan, each of which is complete. Additionally, the depository's plan
incudes a testing phase,  which is expected to be completed  within  appropriate
time frames.

         However,  the depository's  ability to perform properly its services is
also dependent upon other  parties,  including,  but not limited to, issuers and
their  agents,  as well as the  depositary's  direct  participants  and indirect
participants, third party vendors from whom the depository licenses software and
hardware,  and third party vendors on whom the depository relies for information
or the provision of services, including telecommunication and electrical utility
service  providers,  among others. The depository has informed the Industry that
it is contacting  (and will  continue to contact)  third party vendors from whom
the  depository  acquires  services to: (i) impress upon them the  importance of
such services being Year 2000 compliant;  and (ii) determine the extent of their
efforts  for Year 2000  remediation  (and,  as  appropriate,  testing)  of their
services.  In addition,  the  depository  is in the process of  developing  such
contingency plans as it deems appropriate.

         According to the  depository,  the  information  in the  preceding  two
paragraphs  with respect to the depository has been provided to the Industry for
informational  purposes  only and is not intended to serve as a  representation,
warranty, or contract modification of any kind.

         The  depository  may  discontinue  providing its services as securities
depository  with respect to the notes in  book-entry  form at any time by giving
reasonable  notice to Indiana Gas or the trustee.  In the event that a successor
securities  depository is not obtained,  notes in certificated form are required
to be printed and delivered.

         Indiana Gas may decide to  discontinue  use of the system of book-entry
transfers through the depository or a successor securities  depository.  In that
event, notes in certificated form will be printed and delivered.


                                                       S-30



         The  laws of  some  states  may  require  that  certain  purchasers  of
securities take physical  delivery of securities in definitive form. Such limits
and such laws may  impair  the  ability to own,  transfer  or pledge  beneficial
interests in Global Notes.

         So long as the depository, or its nominee, is the registered owner of a
Global  Note,  the  depository  or its  nominee,  as the  case  may be,  will be
considered the sole owner or holder of the notes represented by such Global Note
for all  purposes  under the  indenture.  Except as provided  below,  beneficial
owners of a Global Note will not be entitled to have the notes  represented by a
Global  Note  registered  in their  names,  will not  receive or be  entitled to
receive  physical  delivery  of the  notes  in  definitive  form and will not be
considered the owners or holders thereof under the indenture.  Accordingly, each
person owning a beneficial interest in a Global Note must rely on the procedures
of the depository and, if that person is not a participant, on the procedures of
the  participant  through which that person owns its  interest,  to exercise any
rights of a holder  under the  indenture.  Indiana  Gas  understands  that under
existing industry  practices,  in the event that Indiana Gas requests any action
of holders or that an owner of a beneficial interest in a Global Note desires to
give or take any  action  which a holder is  entitled  to give or take under the
indenture,  the depository would authorize the participants holding the relevant
beneficial  interests to give or take the desired action,  and the  participants
would  authorize  beneficial  owners owning through the  participants to give or
take the  desired  action  or would  otherwise  act  upon  the  instructions  of
beneficial owners.

         Exchange for Notes in Certificated Form

         If:

         (a)      the  depository is at any time unwilling or unable to continue
                  as depository  and a successor  depository is not appointed by
                  Indiana Gas within 60 days,

         (b)      Indiana  Gas  executes  and  delivers to the trustee a company
                  order  to  the  effect   that  the  Global   Notes   shall  be
                  exchangeable, or

         (c)      a  default  or  an  event  of  default  has  occurred  and  is
                  continuing with respect to the notes,

the Global Note or Global Notes will be  exchangeable  for notes in certificated
form of like tenor and of an equal aggregate  principal amount, in denominations
of $1,000 and  integral  multiples  of $1,000.  The  certificated  notes will be
registered in the name or names as the depository  instructs the trustee.  It is
expected  that  instructions  may  be  based  upon  directions  received  by the
depository from participants  with respect to ownership of beneficial  interests
in Global Notes.

         The  information  in this section  concerning  the  depository  and the
depository's  system has been obtained from sources that Indiana Gas believes to
be  reliable,  but Indiana Gas takes no  responsibility  for the accuracy of the
information.

                                                       S-31



             CERTAIN UNITED STATES FEDERAL INCOME TAX CONSIDERATIONS

         The  following  summary of certain  United  States  federal  income tax
consequences  of the purchase,  ownership and  disposition of the notes is based
upon laws,  regulations,  rulings and decisions now in effect,  all of which are
subject to change (including  changes in effective dates) or possible  differing
interpretations.  It deals only with  notes held as capital  assets and does not
purport to deal with  persons  in  special  tax  situations,  such as  financial
institutions,  insurance companies,  regulated investment companies,  dealers in
securities or  currencies,  persons  holding  notes as a hedge against  currency
risks or as a position  in a  "straddle"  for tax  purposes,  or  persons  whose
functional  currency is not the United States dollar. It also does not deal with
holders other than original  purchasers  (except  where  otherwise  specifically
noted).  Persons  considering the purchase of the notes should consult their own
tax advisors concerning the application of United States federal income tax laws
to their  particular  situations  as well as any  consequences  of the purchase,
ownership  and  disposition  of the  notes  arising  under the laws of any other
taxing jurisdiction.

         As used in this discussion,  the term "U.S.  Holder" means a beneficial
owner of a note that is for United  States  federal  income tax  purposes  (i) a
citizen or resident of the United  States,  (ii) a  corporation,  partnership or
other entity  (treated as a corporation or a partnership  for federal income tax
purposes)  created or organized in or under the laws of the United  States,  any
state  of  the  United  States  or  the  District  of  Columbia,  (other  than a
partnership  that is not treated as a United States person under any  applicable
treasury regulations),  (iii) an estate whose income is subject to United States
federal  income tax  regardless  of its source or (iv) a trust if a court within
the  United   States  is  able  to  exercise   primary   supervision   over  the
administration  of the  trust and one or more  United  States  persons  have the
authority to control all substantial decisions of the trust. Notwithstanding the
preceding  sentence,  to the extent  provided in treasury  regulations,  certain
trusts in  existence on August 20, 1996,  and treated as United  States  persons
under the Code and  applicable  treasury  regulations  thereunder  prior to such
date,  that elect to continue to be treated as United  States  persons under the
Code or applicable treasury  regulations  thereunder also will be a U.S. Holder.
As used in this discussion,  the term "non-U.S. Holder" means a beneficial owner
of a note that is not a U.S.
Holder.

U.S. Holders

         Payments of Interest

         Payments  of  interest  on a note  generally  will be taxable to a U.S.
Holder as ordinary  interest income at the time such payments are accrued or are
received  (in  accordance  with  the  U.S.   Holder's   regular  method  of  tax
accounting).

         Original Issue Discount

         The  following  summary is a general  discussion  of the United  States
federal income tax consequences to U.S.  Holders of the purchase,  ownership and


                                                       S-32






disposition  of  Discount  Notes.  The  following  summary  is based  upon final
treasury  regulations (the "OID  Regulations")  released by the Internal Revenue
Service  ("IRS") on January 27,  1994,  as amended on June 11,  1996,  under the
original issue discount provisions of the Code.

         For United States federal income tax purposes,  original issue discount
is the  excess of the stated  redemption  price at  maturity  of a note over its
issue price, if such excess equals or exceeds a de minimis amount (generally 1/4
of 1% of the note's stated redemption price at maturity multiplied by the number
of complete  years to its maturity from its issue date or, in the case of a note
providing for the payment of any amount other than qualified stated interest (as
defined below) prior to maturity, multiplied by the weighted average maturity of
such note).  The issue price of each note in an issue of notes  equals the first
price at which a substantial  amount of such notes has been sold (ignoring sales
to bond  houses,  brokers,  or similar  persons or  organizations  acting in the
capacity  of  underwriters,   placement  agents,  or  wholesalers).  The  stated
redemption  price at maturity of a note is the sum of all  payments  provided by
the note other than "qualified  stated interest"  payments.  The term "qualified
stated interest" generally means stated interest that is unconditionally payable
in cash or  property  (other  than  debt  instruments  of the  issuer)  at least
annually at a single fixed rate. In addition,  under the OID  Regulations,  if a
note bears  interest  for one or more  accrual  periods at a rate below the rate
applicable for the remaining term of such note (e.g., notes with teaser rates or
interest holidays), and if the greater of either the resulting foregone interest
on such note or any "true" discount on such note (i.e., the excess of the note's
stated  principal  amount over its issue price) equals or exceeds a specified de
minimis  amount,  then the  stated  interest  on the note  would be  treated  as
original issue discount rather than qualified stated interest.

         Payments of qualified  stated  interest on a note are taxable to a U.S.
Holder as ordinary  interest income at the time such payments are accrued or are
received  (in  accordance  with  the  U.S.   Holder's   regular  method  of  tax
accounting).  A U.S.  Holder of a  Discount  Note must  include  original  issue
discount in income as ordinary  interest for United  States  federal  income tax
purposes as it accrues  under a constant  yield  method in advance of receipt of
the cash payments attributable to such income,  regardless of such U.S. Holder's
regular  method of tax  accounting.  In general,  the amount of  original  issue
discount included in income by the initial U.S. Holder of a Discount Note is the
sum of the daily  portions  of  original  issue  discount  with  respect  to the
Discount  Note for each day during the  taxable  year (or portion of the taxable
year) on which the U.S.  Holder held the Discount Note.  The "daily  portion" of
original issue discount on any Discount Note is determined by allocating to each
day in any  accrual  period a ratable  portion of the  original  issue  discount
allocable to that accrual period.  An "accrual  period" may be of any length and
the  accrual  periods  may vary in length  over the term of the  Discount  Note,
provided that each accrual  period is no longer than one year and each scheduled
payment of  principal or interest  occurs  either on the final day of an accrual
period or on the first day of an accrual  period.  The amount of original  issue
discount  allocable to each accrual period is generally  equal to the difference
between  (i) the  product of the  Discount  Note's  adjusted  issue price at the
beginning of such accrual  period and its yield to maturity  (determined  on the
basis of  compounding  at the close of each  accrual  period  and  appropriately
adjusted to take into account the length of the particular  accrual  period) and
(ii) the amount of any  qualified  stated  interest  payments  allocable to such
accrual  period.  The "adjusted issue price" of a Discount Note at the beginning
of any accrual  period is the sum of the issue price of the  Discount  Note plus


                                                       S-33



the amount of original  issue  discount  allocable to all prior accrual  periods
minus the  amount  of any  prior  payments  on the  Discount  Note that were not
qualified stated interest  payments.  Under these rules,  U.S. Holders generally
will have to include in income  increasingly  greater  amounts of original issue
discount in successive accrual periods.

         A U.S.  Holder  who  purchases  a Discount  Note for an amount  that is
greater than its adjusted  issue price as of the purchase  date and less than or
equal to the sum of all amounts  payable on the Discount Note after the purchase
date other than  payments of qualified  stated  interest,  will be considered to
have  purchased  the  Discount  Note  at an  "acquisition  premium."  Under  the
acquisition premium rules, the amount of original issue discount which such U.S.
Holder must include in its gross income with respect to such  Discount  Note for
any taxable year (or portion thereof in which the U.S. Holder holds the Discount
Note) will be reduced  (but not below  zero) by the  portion of the  acquisition
premium properly allocable to the period.

         Under the OID  Regulations,  floating rate notes are subject to special
rules  whereby a  floating  rate  note will  qualify  as a  "variable  rate debt
instrument"  if (a) its issue  price  does not  exceed  the total  noncontingent
principal  payments due under the floating rate note by more than a specified de
minimis  amount and (b) it provides for stated  interest,  paid or compounded at
least annually,  at current values of (i) one or more qualified  floating rates,
(ii) a single  fixed  rate and one or more  qualified  floating  rates,  (iii) a
single  objective rate, or (iv) a single fixed rate and a single  objective rate
that is a qualified inverse floating rate.

         A "qualified  floating  rate" is any variable rate where  variations in
the value of such rate can  reasonably  be expected  to measure  contemporaneous
variations  in the cost of newly  borrowed  funds in the  currency  in which the
floating rate note is denominated.  Although a multiple of a qualified  floating
rate will generally not itself constitute a qualified  floating rate, a variable
rate equal to the product of a qualified floating rate and a fixed multiple that
is greater than 0.65 but not more than 1.35 will constitute a qualified floating
rate. A variable  rate equal to the product of a qualified  floating  rate and a
fixed  multiple  that is greater than 0.65 but not more than 1.35,  increased or
decreased by a fixed rate,  will also  constitute a qualified  floating rate. In
addition,  under the OID Regulations,  two or more qualified floating rates that
can reasonably be expected to have  approximately the same values throughout the
term of the floating rate note (e.g., two or more qualified  floating rates with
values  within 25 basis points of each other as  determined on the floating rate
note's  issue  date)  will be  treated  as a  single  qualified  floating  rate.
Notwithstanding the foregoing, a variable rate that would otherwise constitute a
qualified floating rate but which is subject to one or more restrictions such as
a maximum numerical  limitation (i.e., a cap) or a minimum numerical  limitation
(i.e.,  a floor)  may,  under  certain  circumstances,  fail to be  treated as a
qualified  floating rate under the OID  Regulations  unless such cap or floor is
fixed throughout the term of the note. An "objective rate" is a rate that is not
itself a qualified  floating rate but which is  determined  using a single fixed
formula and that is based on objective financial or economic information. A rate
will not  qualify as an  objective  rate if it is based on  information  that is
within the  control of the issuer (or a related  party) or that is unique to the
circumstances of the issuer (or a related party), such as dividends, profits, or
the  value  of the  issuer's  stock  (although  a rate  does  not  fail to be an
objective  rate merely because it is based on the credit quality of the issuer).
A "qualified

                                                       S-34



inverse floating rate" is any objective rate where such rate is equal to a fixed
rate minus a qualified  floating  rate,  as long as  variations  in the rate can
reasonably be expected to inversely  reflect  contemporaneous  variations in the
qualified  floating  rate. The OID  Regulations  also provide that if a floating
rate note provides for stated  interest at a fixed rate for an initial period of
one year or less followed by a variable rate that is either a qualified floating
rate or an objective  rate and if the variable  rate on the floating rate note's
issue date is intended  to  approximate  the fixed rate (e.g.,  the value of the
variable rate on the issue date does not differ from the value of the fixed rate
by more  than 25 basis  points),  then the  fixed  rate  and the  variable  rate
together will constitute  either a single  qualified  floating rate or objective
rate, as the case may be.

         If a floating rate note that  provides for stated  interest at either a
single  qualified  floating rate or a single  objective rate throughout the term
thereof qualifies as a "variable rate debt instrument" under the OID Regulations
and if the interest on such note is unconditionally  payable in cash or property
(other than debt  instruments of the issuer) at least annually,  then all stated
interest on the note will constitute qualified stated interest and will be taxed
accordingly.  Thus, a floating  rate note that  provides for stated  interest at
either a single  qualified  floating rate or a single  objective rate throughout
the term thereof and that qualifies as a "variable rate debt  instrument"  under
the OID  Regulations  will  generally  not be treated as having been issued with
original  issue  discount  unless the  floating  rate note is issued at a "true"
discount (i.e., at a price below the note's stated  principal  amount) in excess
of a specified de minimis  amount.  The amount of qualified  stated interest and
the amount of original  issue  discount,  if any, that accrues during an accrual
period on such a floating rate note is determined  under the rules applicable to
fixed rate debt  instruments  by assuming that the variable rate is a fixed rate
equal to (i) in the  case of a  qualified  floating  rate or  qualified  inverse
floating rate, the value,  as of the issue date, of the qualified  floating rate
or qualified  inverse  floating  rate, or (ii) in the case of an objective  rate
(other than a qualified  inverse  floating rate), a fixed rate that reflects the
yield that is  reasonably  expected for the floating  rate note.  The  qualified
stated  interest  allocable to an accrual  period is increased (or decreased) if
the interest  actually paid during an accrual  period  exceeds (or is less than)
the  interest  assumed to be paid  during the  accrual  period  pursuant  to the
foregoing rules.

         In general,  any other floating rate note that qualifies as a "variable
rate debt  instrument"  will be converted into an  "equivalent"  fixed rate debt
instrument for purposes of determining  the amount and accrual of original issue
discount  and  qualified  stated  interest on the  floating  rate note.  The OID
Regulations  generally  require that such a floating rate note be converted into
an  "equivalent"  fixed  rate debt  instrument  by  substituting  any  qualified
floating rate or qualified inverse floating rate provided for under the terms of
the  floating  rate note with a fixed rate  equal to the value of the  qualified
floating rate or qualified  inverse floating rate, as the case may be, as of the
floating  rate note's  issue date.  Any  objective  rate (other than a qualified
inverse floating rate) provided for under the terms of the floating rate note is
converted into a fixed rate that reflects the yield that is reasonably  expected
for the floating rate note.  In the case of a floating rate note that  qualifies
as a "variable rate debt instrument" and provides for stated interest at a fixed
rate in addition to either one or more  qualified  floating rates or a qualified
inverse  floating rate,  the fixed rate is initially  converted into a qualified
floating rate (or a qualified  inverse  floating rate, if the floating rate note
provides for a qualified inverse floating rate). Under such  circumstances,  the
qualified floating rate or qualified

                                                       S-35



inverse  floating  rate that  replaces the fixed rate must be such that the fair
market value of the floating rate note as of the floating rate note's issue date
is  approximately  the same as the fair market value of an  otherwise  identical
debt  instrument  that  provides  for  either  the  qualified  floating  rate or
qualified  inverse  floating  rate  rather than the fixed  rate.  Subsequent  to
converting  the fixed rate into either a qualified  floating rate or a qualified
inverse  floating  rate,  the  floating  rate  note  is then  converted  into an
"equivalent" fixed rate debt instrument in the manner described above.

         Once the floating  rate note is converted  into an  "equivalent"  fixed
rate debt  instrument  pursuant to the foregoing  rules,  the amount of original
issue  discount and qualified  stated  interest,  if any, are determined for the
"equivalent"  fixed rate debt instrument by applying the general  original issue
discount rules to the "equivalent"  fixed rate debt instrument and a U.S. Holder
of the floating  rate note will  account for such  original  issue  discount and
qualified stated interest as if the U.S. Holder held the "equivalent" fixed rate
debt instrument.  In each accrual period appropriate adjustments will be made to
the amount of qualified  stated  interest or original issue discount  assumed to
have been  accrued  or paid with  respect  to the  "equivalent"  fixed rate debt
instrument  in the event that such  amounts  differ  from the  actual  amount of
interest accrued or paid on the floating rate note during the accrual period.

         If a  floating  rate note does not  qualify  as a  "variable  rate debt
instrument"  under the OID  Regulations,  then the  floating  rate note would be
treated as a contingent  payment debt  obligation.  U.S. Holders should be aware
that on June 11,  1996,  the United  States  Treasury  Department  issued  final
regulations (the "CPDI Regulations") concerning the proper United States federal
income tax treatment of contingent  payment debt  instruments.  In general,  the
CPDI  Regulations  would cause the timing and character of income,  gain or loss
reported on a contingent  payment debt instrument to  substantially  differ from
the timing  and  character  of income,  gain or loss  reported  on a  contingent
payment debt  instrument  under  general  principles  of current  United  States
federal income tax law.  Specifically,  the CPDI Regulations generally require a
U.S. Holder of such an instrument to include future contingent and noncontingent
interest  payments  in income as such  interest  accrues  based upon a projected
payment schedule.  Moreover,  in general,  under the CPDI Regulations,  any gain
recognized by a U.S. Holder on the sale, exchange, or retirement of a contingent
payment debt  instrument will be treated as ordinary income and all or a portion
of any loss  realized  could be treated as  ordinary  loss as opposed to capital
loss  (depending upon the  circumstances).  The CPDI  Regulations  apply to debt
instruments issued on or after August 13, 1996. The proper United States federal
income tax  treatment  of  floating  rate notes that are  treated as  contingent
payment debt obligations will be more fully described in the applicable  Pricing
Supplement.  Furthermore,  any other special  United States  federal  income tax
considerations,  not otherwise  discussed  herein,  which are  applicable to any
particular  issue  of  notes  will  be  discussed  in  the  applicable   Pricing
Supplement.

         Certain of the notes (i) may be redeemable at the option of Indiana Gas
prior to their stated maturity (a "call option") and/or (ii) may be repayable at
the option of the holder prior to their stated maturity (a "put option").  Notes
containing  such  features  may be subject to rules that differ from the general
rules discussed above.  Investors intending to purchase notes with such features
should  consult  their own tax  advisors,  since  the  original  issue  discount
consequences  will depend,  in part, on the particular terms and features of the
purchased notes.

                                                       S-36



         U.S.  Holders  may  generally,  upon  election,  include  in income all
interest  (including  stated  interest,  acquisition  discount,  original  issue
discount, de minimis original issue discount, market discount, de minimis market
discount,  and unstated interest, as adjusted by any amortizable bond premium or
acquisition  premium)  that accrues on a debt  instrument  by using the constant
yield  method  applicable  to  original  issue  discount,   subject  to  certain
limitations and exceptions.

         Short-Term Notes

         Notes  that  have a fixed  maturity  of one  year or less  ("Short-Term
Notes") will be treated as having been issued with original issue  discount.  In
general,  an  individual  or other cash  method U.S.  Holder is not  required to
accrue such original issue discount  unless the U.S.  Holder elects to do so. If
such an  election is not made,  any gain  recognized  by the U.S.  Holder on the
sale, exchange or maturity of the Short-Term Note will be ordinary income to the
extent of the original issue discount accrued on a straight-line  basis, or upon
election under the constant yield method (based on daily  compounding),  through
the  date  of  sale or  maturity,  and a  portion  of the  deductions  otherwise
allowable  to the U.S.  Holder  for  interest  on  borrowings  allocable  to the
Short-Term  Note  will be  deferred  until a  corresponding  amount of income is
realized.  U.S.  Holders who report income for United States  federal income tax
purposes under the accrual method, and certain other holders including banks and
dealers in  securities,  are  required to accrue  original  issue  discount on a
Short-Term  Note on a  straight-line  basis unless an election is made to accrue
the  original  issue  discount  under a constant  yield  method  (based on daily
compounding).

         Market Discount

         If a U.S. Holder  purchases a note,  other than a Discount Note, for an
amount  that is less  than its  issue  price  (or,  in the case of a  subsequent
purchaser,  its  stated  redemption  price  at  maturity)  or,  in the case of a
Discount  Note,  for an amount that is less than its adjusted  issue price as of
the purchase  date,  such U.S.  Holder will be treated as having  purchased such
note at a  "market  discount,"  unless  such  market  discount  is  less  than a
specified de minimis amount.

         Under the market  discount  rules,  a U.S.  Holder  will be required to
treat any partial  principal  payment (or, in the case of a Discount  Note,  any
payment that does not  constitute  qualified  stated  interest)  on, or any gain
realized on the sale,  exchange,  retirement or other  disposition of, a note as
ordinary income to the extent of the lesser of (i) the amount of such payment or
realized gain or (ii) the market discount which has not previously been included
in income  and is  treated  as having  accrued  on such note at the time of such
payment or  disposition.  Market  discount will be considered to accrue  ratably
during the period from the date of acquisition to the maturity date of the note,
unless  the U.S.  Holder  elects  to  accrue  market  discount  on the  basis of
semiannual compounding.

         A U.S.  Holder  may be  required  to defer  the  deduction  of all or a
portion  of the  interest  paid  or  accrued  on any  indebtedness  incurred  or
maintained to purchase or carry a note with market  discount  until the maturity
of the note or certain earlier dispositions, because a current deduction is only
allowed to the extent  the  interest  expense  exceeds an  allocable  portion of
market  discount.  A U.S.  Holder may elect to include market discount in income
currently as it accrues (on either a

                                                       S-37






ratable or  semiannual  compounding  basis),  in which case the rules  described
above regarding the treatment as ordinary income of gain upon the disposition of
the note and upon the  receipt  of  certain  cash  payments  and  regarding  the
deferral  of  interest  deductions  will not apply.  Generally,  such  currently
included  market  discount is treated as  ordinary  interest  for United  States
federal income tax purposes. Such an election will apply to all debt instruments
acquired by the U.S.  Holder on or after the first day of the first taxable year
to which such  election  applies and may be revoked only with the consent of the
IRS.

         Premium

         If a U.S.  Holder  purchases a note for an amount that is greater  than
the sum of all amounts  payable on the note after the  purchase  date other than
payments of qualified  stated  interest,  such U.S. Holder will be considered to
have purchased the note with  "amortizable bond premium" equal in amount to such
excess.  A U.S. Holder may elect to amortize such premium using a constant yield
method over the  remaining  term of the note and may offset  interest  otherwise
required to be  included  in respect of the note during any taxable  year by the
amortized amount of such excess for the taxable year.  However,  if the note may
be optionally redeemed after the U.S. Holder acquires it at a price in excess of
its stated  redemption price at maturity,  special rules would apply which could
result in a deferral of the amortization of some bond premium until later in the
term of the note.  Any election to amortize bond premium  applies to all taxable
debt  instruments  held by the U.S. Holder at the beginning of the first taxable
year to which the election applies and to all taxable debt instruments  acquired
on or after such date.  The election may be revoked only with the consent of the
IRS.

         Disposition of a Note

         Except as discussed above,  upon the sale,  exchange or retirement of a
note, a U.S. Holder  generally will recognize  taxable gain or loss equal to the
difference  between  the amount  realized on the sale,  exchange  or  retirement
(other than  amounts  representing  accrued and unpaid  interest)  and such U.S.
Holder's adjusted tax basis in the note. A U.S. Holder's adjusted tax basis in a
note  generally  will equal such U.S.  Holder's  initial  investment in the note
increased by any original issue discount  included in income (and accrued market
discount,  if any,  if the U.S.  Holder has  included  such  market  discount in
income) and decreased by the amount of any payments, other than qualified stated
interest  payments,  received and amortizable bond premium taken with respect to
such note. Such gain or loss generally will be long-term capital gain or loss if
the note were held for more than one year. The  deductibility  of capital losses
is subject to limitations.  Prospective  investors  should consult their own tax
advisors concerning these tax law provisions.

Non-U.S. Holders

         A non-U.S.  Holder will not be subject to United States  federal income
taxes on payments of principal, premium (if any) or interest (including original
issue discount,  if any) on a note,  unless such non-U.S.  Holder is a direct or
indirect  10% or greater  shareholder  of  Indiana  Gas,  a  controlled  foreign
corporation  related to Indiana Gas or a bank  receiving  interest  described in
section  881(c)(3)(A)  of the Code. To qualify for the exemption  from taxation,
the last United States payor

                                                       S-38


in the chain of payment prior to payment to a non-U.S.  Holder (the "Withholding
Agent")  must  have  received  in the year in which a  payment  of  interest  or
principal occurs, or in either of the two preceding  calendar years, a statement
that (i) is  signed  by the  beneficial  owner of the note  under  penalties  of
perjury,  (ii) certifies that such owner is not a U.S. Holder and (iii) provides
the name and address of the  beneficial  owner.  The statement may be made on an
IRS Form W-8 or a  substantially  similar form,  and the  beneficial  owner must
inform the  Withholding  Agent of any change in the information on the statement
within 30 days of such change.  If a note is held through a securities  clearing
organization  or certain  other  financial  institutions,  the  organization  or
institution may provide a signed statement to the Withholding Agent. However, in
such case,  the signed  statement  must be accompanied by a copy of the IRS Form
W-8 or the substitute form provided by the beneficial  owner to the organization
or   institution.   The  United  States   Treasury   Department  is  considering
implementation  of  further  certification  requirements  aimed  at  determining
whether the issuer of a debt obligation is related to holders thereof.

         Generally,  a non-U.S.  Holder  will not be  subject to federal  income
taxes  on  any  amount  which  constitutes   capital  gain  upon  retirement  or
disposition  of a note,  provided the gain is not  attributable  to an office or
other fixed place of business  maintained  by the non-U.S.  Holder in the United
States. Certain other exceptions may be applicable, and a non-U.S. Holder should
consult its tax advisor in this regard.

         The notes will not be  includible  in the  estate of a non-U.S.  Holder
unless the  individual  is a direct or indirect  10% or greater  shareholder  of
Indiana Gas or, at the time of such individual's  death,  payments in respect of
the notes  would  have  been  effectively  connected  with the  conduct  by such
individual of a trade or business in the United States.

Backup Withholding

         Backup withholding of United States federal income tax at a rate of 31%
may apply to payments made in respect of the notes to registered  owners who are
not "exempt recipients" and who fail to provide certain identifying  information
(such as the registered owner's taxpayer  identification number) in the required
manner. Generally,  individuals are not exempt recipients,  whereas corporations
and certain other  entities  generally are exempt  recipients.  Payments made in
respect of the notes to a U.S.  Holder must be  reported to the IRS,  unless the
U.S. Holder is an exempt recipient or establishes an exemption.  Compliance with
the identification procedures described in the preceding section would establish
an exemption from backup withholding for those non-U.S.
Holders who are not exempt recipients.

         In  addition,  upon the sale of a note to (or  through)  a broker,  the
broker must  withhold 31% of the entire  purchase  price,  unless either (i) the
broker  determines that the seller is a corporation or other exempt recipient or
(ii)  the  seller  provides,   in  the  required  manner,   certain  identifying
information and, in the case of a non-U.S. Holder, certifies that such seller is
a non-U.S.  Holder (and certain other conditions are met). Such a sale must also
be reported by the broker to the IRS,  unless  either (i) the broker  determines
that the seller is an exempt recipient or (ii) the seller certifies its non-U.S.
status (and certain other  conditions are met).  Certification of the registered
owner's

                                                       S-39



non-U.S.  status would be made normally on an IRS Form W-8 or Form W-8 BEN under
penalties  of perjury,  although  in certain  cases it may be possible to submit
other documentary evidence.

         Any amounts withheld under the backup  withholding rules from a payment
to a  beneficial  owner  would be allowed as a refund or a credit  against  such
beneficial  owner's  United  States  federal  income tax  provided  the required
information is furnished to the IRS.

New Withholding Regulations

         Final  regulations  dealing  with  withholding  tax on  income  paid to
foreign  persons,  backup  withholding and related matters (the "New Withholding
Regulations") were issued by the Treasury Department on October 6, 1997. The New
Withholding  Regulations  generally attempt to unify certification  requirements
and modify reliance standards. The New Withholding Regulations generally will be
effective  for  payments  made  after  December  31,  2000,  subject  to certain
transition rules.

         Prospective  investors  are  strongly  urged to  consult  their own tax
advisors with respect to the New Withholding Regulations.


                              PLAN OF DISTRIBUTION

         Indiana Gas is  offering  the notes for sale on a  continuing  basis to
Merrill  Lynch  & Co.,  Merrill  Lynch,  Pierce,  Fenner  &  Smith  Incorporated
("Merrill Lynch") as principal or, if agreed to at the particular time,  through
Merrill Lynch as agent, in which case Merrill Lynch will use reasonable  efforts
to solicit  purchase of the notes.  Indiana Gas may also utilize the services of
other agents identified in the applicable pricing  supplement.  Unless otherwise
specified  in  the  applicable  pricing  supplement,  Indiana  Gas  will  pay  a
commission to the agent,  ranging from .125% to .750% of the principal amount of
a note,  depending upon its stated maturity or, with respect to a note for which
the stated  maturity is in excess of 30 years,  a  commission  as agreed upon by
Indiana Gas and the agent at the time of sale.

         Indiana Gas reserves the right to withdraw,  cancel or modify the offer
made by this  prospectus  supplement  without notice and may reject  orders,  in
whole or in part,  whether  placed  directly  with  Indiana  Gas or through  the
agents.  The  agents  will  have  the  right,  in  their  discretion  reasonably
exercised, to reject in whole or in part any offer to purchase notes received by
them.

         Unless specified in the applicable pricing supplement, any note sold to
an  agent  as  principal  will  be  purchased  at a price  equal  to 100% of the
principal  amount  of  the  note  less a  percentage  equal  to  the  commission
applicable  to an agency sale of a note of  identical  maturity.  The agents may
resell these notes at varying prices related to prevailing  market prices at the
time of sale or, if agreed  to with  Indiana  Gas,  at a fixed  public  offering
price. Indiana Gas may also sell notes directly and would not pay any commission
on these sales.


                                                       S-40



         The agents may resell any notes purchased as principal to other dealers
and, unless otherwise specified in the applicable pricing supplement,  may allow
all or any portion of the discount  received in connection  with  purchases from
Indiana Gas to such dealers.  After the initial  public  offering of notes,  the
public  offering  price,  in the case of notes to be  resold  at a fixed  public
offering  price,  the  concession  and the  discount  allowed to dealers  may be
changed.

         The agents may be deemed to be "underwriters" within the meaning of the
Securities  Act of 1933.  Indiana Gas has agreed to indemnify the agents against
certain liabilities,  including liabilities under the Securities Act of 1933, or
to contribute to payments the agents may be required to make in respect thereof.
Indiana Gas has agreed to reimburse the agents for certain expenses.

         The agents may sell to or through  dealers who may resell to investors,
and the  Agents  may pay all or part of their  discount  or  commission  to such
dealers.  Such dealers may be deemed to be "underwriters"  within the meaning of
the Securities Act of 1933.

         Unless  otherwise  indicated  in  the  applicable  pricing  supplement,
payment  of the  purchase  price  of  notes  will  be  required  to be  made  in
immediately available funds in The City of New York.

         The  agents may be  customers  of,  engage in  transactions  with,  and
perform services for Indiana Gas in the ordinary course of business.

         Upon issuance,  the notes will not have an established  trading market.
The notes  will not be listed on any  securities  exchange.  The agents may from
time to time purchase and sell notes in the secondary market, but the agents are
not  obligated  to do so,  and there can be no  assurance  that  there will be a
secondary  market for the notes or that there will be liquidity in the secondary
market if one develops.  From time to time,  the agents may make a market in the
notes,  but the  agents  are not  obligated  to do so and may  discontinued  any
market-making activity at any time.

         In  connection  with the  offering of notes  purchased by the agents as
principal on a fixed price basis,  the agents are permitted to engage in certain
transactions  that  stabilize  the price of the notes.  These  transactions  may
consist of bids or purchases for the purpose of pegging,  fixing or  maintaining
the price of the notes.  If an agent  creates a short  position  in the notes in
connection  with the offering,  i.e.,  it sells notes in an aggregate  principal
amount exceeding that set forth in the applicable pricing  supplement,  then the
agent may reduce that short position by purchasing notes in the open market.  In
general,  purchases  of notes for the  purpose of  stabilization  or to reduce a
short  position  could  cause the  price of the  notes to be higher  than in the
absence of these purchases.

         Neither  Indiana  Gas  nor  any  agent  makes  any   representation  or
prediction as to the direction or magnitude of any effect that the  transactions
described above may have on the price of the notes. In addition, neither Indiana
Gas nor any agent makes any representation that an agent will engage in any such
transactions or that such transactions, once commenced, will not be discontinued
without notice.



                                                       S-41



                              VALIDITY OF THE NOTES

         The validity of the notes will be passed upon for Indiana Gas by Barnes
& Thornburg,  Indianapolis,  Indiana and for the agents by Brown & Wood LLP, New
York, New York.




                                                       S-42






                                     [LOGO]


                                  $100,000,000



                            Indiana Gas Company, Inc.




                               Medium-Term Notes,
                                    Series G
                   Due Nine Months or More from Date of Issue


                        --------------------------------


                              PROSPECTUS SUPPLEMENT

                         -------------------------------




                               Merrill Lynch & Co.





                             ___________ ____, 1999


The  information in this  prospectus is not complete and may be changed.  We may
not sell  these  securities  until the  registration  statement  filed  with the
Securities and Exchange Commission is effective. This prospectus is not an offer
to  sell  these  securities  and it is not  soliciting  an  offer  to buy  these
securities in any jurisdiction where the offer or sale is not permitted.

                              Subject to Completion
                Preliminary Prospectus dated _________ ___, 1999

PROSPECTUS


                                     [LOGO]



                            Indiana Gas Company, Inc.

                                 Debt Securities


                  o        By this prospectus, we may offer from time to time up
                           to $100,000,000 of our debt securities.

                  o        When we offer debt  securities,  we will  provide you
                           with a prospectus  supplement describing the terms of
                           the  specific  issue  of  securities   including  the
                           offering price of the securities.

                  o        You should read this  prospectus  and the  prospectus
                           supplement  relating  to  the  specific  offering  of
                           securities carefully before you invest.


         Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or determined if this
prospectus  is truthful or  complete.  Any  representation  to the contrary is a
criminal offense.


                           --------------------------



                The date of this prospectus is __________, 1999.

                                                         1






                            INDIANA GAS COMPANY, INC.

         We are an operating  pubic  utility  providing  gas utility  service in
Indiana. We supply gas to approximately  494,000 customers in 311 communities in
48 of the 92 counties in Indiana. The largest communities which we serve include
Muncie, Anderson, Lafayette, West Lafayette,  Bloomington,  Terre Haute, Marion,
New Albany, Columbus, Jeffersonville, New Castle and Richmond. We do not provide
service in Indianapolis, although our general office is located
there.

         Our  service  area has a  population  of  approximately  2 million  and
contains diversified manufacturing and agricultural  enterprises.  The principal
industries which we serve include:

                  o        automotive parts and accessories;
                  o        feed, flour and grain processing;
                  o        metal castings;
                  o        aluminum products;
                  o        gypsum products;
                  o        electrical equipment;
                  o        metal processing; and
                  o        glass.

         Our  principal  executive  office is  located  at 1630  North  Meridian
Street, Indianapolis, Indiana 46202; our telephone number is 317-926-3351.

         If you want to find more information  about us, please see the sections
entitled "Where You Can find More Information" and "Incorporation of Information
We File with the SEC" in this prospectus.



                                                         2






                               RECENT DEVELOPMENTS

         On June 14, 1999, Indiana Energy,  Inc. (the parent of Indiana Gas) and
SIGCORP Inc.  announced that they have signed a definitive  agreement to combine
into a new holding  company,  to be named Vectren  Corp.  SIGCORP is an investor
owned  energy and  telecommunications  company  that  provides  gas and electric
service to  southwest  Indiana and  telecommunication  products  throughout  the
Midwest and elsewhere.  Under the agreement,  SIGCORP  shareholders will receive
one and  one-third  shares of the new  company's  common stock for each share of
SIGCORP they currently hold. Indiana Energy  shareholders will receive one share
of the new  company's  common  stock  for each  share  of  Indiana  Energy  they
currently hold.

         Through  its  utility  subsidiaries,  Vectren  will  offer  gas  and/or
electricity to more than 650,000 customers in adjoining service areas that cover
nearly  two-thirds of Indiana.  Vectren's  non-utility  subsidiaries  will offer
energy-related  products  and  services,   fiber-optic  based  telecommunication
services,  materials  management,  locating  and  trenching  services and energy
marketing to customers throughout the surrounding region.

         Indiana Energy's and SIGCORP's  utility  companies will remain separate
subsidiaries of Vectren and will continue to operate under the names Indiana Gas
Company,   Inc.  and  Southern  Indiana  Gas  and  Electric  Company   (SIGECO),
respectively.  Under the merger agreement, the corporate headquarters of Vectren
and of SIGECO will be in  Evansville,  Indiana.  Indiana Gas will continue to be
headquartered in Indianapolis, where it has been for over 50 years.

         The merger is  conditioned,  among other things,  upon the approvals of
the  shareholders  of  Indiana  Energy  and  SIGCORP  and  customary  regulatory
approvals.



                                                         3






                                 USE OF PROCEEDS

         We will use the net  proceeds  from the sale of the notes  for  general
corporate  purposes,  including repayment of long term debt and financing of our
continuing  construction  program.  The following  table sets forth  information
relating to our capital expenditures for the periods indicated.



                                            Fiscal Year Ended September 30
                                                    (In thousands)
                                    =======================================================
                                       2000            1999             1998           1997
                                                                        
Amount of Capital Expenditures (1)  $60,000         $61,000          $57,000        $72,000
Percentage of Capital Expenditures                                       64%            58%
Provided by Internal Funds

(1)      Amounts for 2000 and 1999 are estimated


                       RATIO OF EARNINGS TO FIXED CHARGES

         The  following  table  sets forth our  historical  ratios of earning to
fixed charges for the periods indicated.





        Twelve Months
       Ended March 31,                                   Fiscal Years Ended September 30
                                ---------------------------------------------------------------------------------
                                                                                         
             1999                      1998          1997            1996             1995              1994
- ------------------------------  -------------- --------------- ---------------  ----------------  ---------------
         4.0                             3.9           2.2             4.6              4.1               4.1



         For the purpose of calculating  the ratio of earnings to fixed charges,
"earnings"  consist of net income plus income taxes,  investment tax credits and
fixed charges. "Fixed charges" consist of interest charges, amortization of debt
discount and expenses and the estimated  interest  component of rents. The ratio
of earnings to fixed  charges  for fiscal 1997 before the  restructuring  charge
relating to the  restructuring  of operations of Indiana Gas to reduce costs and
remain competitive was 4.4.

                                                         4






                       DESCRIPTION OF THE DEBT SECURITIES

General

         The debt  securities  will be  issued  under an  indenture  dated as of
February 1, 1991,  between Indiana Gas and U.S. Bank Trust National  Association
(formerly Continental Bank, National Association),  as trustee, as supplemented,
a copy of which is filed as an exhibit to the  registration  statement  of which
this prospectus is a part.

         The following  summaries of certain provisions of the indenture are not
complete and are subject to, and are  qualified  in their  entirety by reference
to, all of the provisions of the indenture, including the definitions of terms.

         The Indenture does not limit the amount of debt,  secured or unsecured,
which  may be  issued  by  Indiana  Gas.  The debt  securities  offered  by this
Prospectus  are  unsecured  and  rank  equally  with  the  other  unsecured  and
unsubordinated indebtedness of Indiana Gas.

         Unless  otherwise  indicated in the applicable  prospectus  supplement,
Indiana  Gas will  issue  the debt  securities  only in fully  registered  form,
without  coupons,  in denominations  of $1,000 or any multiple  thereof.  Unless
otherwise specified in the applicable prospectus supplement, the debt securities
will be registered for transfer and exchange,  and principal,  premium,  if any,
and  interest,  if any,  will be payable at the  corporate  trust offices of the
trustee in Chicago,  Illinois and New York,  New York. No service charge will be
made for any  transfer or exchange of the debt  securities,  but Indiana Gas may
require payment of a sum sufficient to cover any tax or other government  charge
payable in  connection  with any  registration  or exchange  other than  certain
exchanges not involving any transfer.

Terms of the Debt Securities

         Indiana Gas may issue the debt  securities  from time to time,  without
limitation as to aggregate  principal amount and in one or more series.  Indiana
Gas may issue debt securities upon the satisfaction of conditions, including the
delivery to the trustee of a supplemental indenture or a resolution of the Board
of  Directors of Indiana  Gas, or a committee  of the Board of  Directors,  or a
certificate of an officer of Indiana Gas who has been authorized by the Board of
Directors to take that kind of action,  which fixes or establishes  the terms of
the debt  securities  being  issued.  Any  resolution  or officer's  certificate
approving  the  issuance  of any  issue  of debt  securities  will  include  the
following terms of that issue of debt securities:

         o        the title of the debt securities;

         o        any  limit  on the  aggregate  principal  amount  of the  debt
                  securities;

         o        the date or dates on which the principal will be payable;


                                                         5






         o        the rate or rates (or manner of calculating the rate or rates)
                  at which the debt securities  will bear interest,  if any, and
                  the date or dates from which any interest will accrue;

         o        the interest payment dates and the regular record date for any
                  interest payable;

         o        the place or places where the principal (and premium,  if any)
                  and interest, if any, will be payable and where the securities
                  may be surrendered for registration, transfer, or exchange;

         o        the period or  periods  within  which,  the price or prices at
                  which,  and the  terms and  conditions  upon  which,  the debt
                  securities may be redeemed or purchased, in whole or in part;

         o        any   mandatory   redemption  or  sinking  fund  or  analogous
                  provisions;

         o        the  denominations  in  which  any  debt  securities  will  be
                  issuable  if  other  than  denominations  of  $1,000  and  any
                  integral multiple thereof;

         o        the  currency  or  currencies  of  payment of  principal  (and
                  premium, if any) and interest (if other than U.S. dollars);

         o        if the amount of payments of principal  (and premium,  if any)
                  or interest may be determined with reference to an index,  the
                  manner in which such amounts will be determined;

         o        if other than the full  principal  amount,  the portion of the
                  principal  amount  which will be payable upon  declaration  of
                  acceleration of maturity;

         o        any additional  events of default or covenants of Indiana Gas;
                  and

         o        any other terms of the debt securities.

         The  applicable  prospectus  supplement  will also describe any special
provisions  for the  payment  of  additional  amounts  with  respect to the debt
securities.

Limitations on Liens

         Indiana  Gas may not  create or permit  to be  created  or to exist any
mortgage on,  pledge of, or other lien on or security  interest in, any property
or assets of Indiana Gas securing any  indebtedness  for money borrowed,  unless
Indiana Gas offers to each holder of the debt  securities  by written  notice an
undertaking by Indiana Gas to provide that the debt  securities  will be equally
and ratably secured with that indebtedness and any other  indebtedness  which is
entitled to be

                                                         6






equally and ratably secured. Any holder of a debt security may accept this offer
in writing  delivered to Indiana Gas on or prior to the 30th day  following  the
date of the notice given by Indiana Gas. However, these restrictions on liens do
not apply to

         o        certain governmental  charges and similar liens,  assessments,
                  pledges and deposits described in the indenture;

         o        leases made, or existing on property acquired, in the ordinary
                  course  of  business   (including  leases  made  in  sale  and
                  lease-back transactions);

         o        zoning  restrictions,  easements,  licenses or restrictions on
                  the use of real property or minor irregularities in the title,
                  which do not, in the opinion of Indiana Gas, materially impair
                  the use of such  property in the  operation of the business of
                  Indiana Gas or the value of such  property  for the purpose of
                  that business;

         o        liens on any  property  acquired,  constructed  or improved by
                  Indiana Gas after the date of the indenture  which are created
                  or  assumed  at the time of, or  within  120 days  after,  the
                  acquisition or completion of the  construction or improvement,
                  or within  six  months  after the  acquisition  or  completion
                  pursuant to a firm  commitment  for financing  arranged with a
                  lender or investor  within such 120-day  period,  to secure or
                  provide  for the  payment  of all or any part of the  purchase
                  price  of the  property  or the  cost of the  construction  or
                  improvement incurred after the date of the indenture;

         o        liens  on  any  property  already  existing  at  the  time  of
                  acquisition,  so long as the  liens do not  apply to any other
                  property  owned by  Indiana  Gas other  than  unimproved  real
                  property on which the property  constructed or the improvement
                  is located;

         o        existing   liens  on  any  property  or   indebtedness   of  a
                  corporation which is merged or consolidated with Indiana Gas;

         o        liens  in  favor  of the  United  States,  any  state,  or any
                  department, agency or instrumentality or political subdivision
                  of  the  United  States  or  any  state,  to  secure  partial,
                  progress,  advance or other payments  pursuant to any contract
                  or  statute  or to secure any  indebtedness  incurred  for the
                  purpose of financing all or any part of the purchase  price of
                  or the cost of constructing or improving the property  subject
                  to such liens, including,  without limitation, liens to secure
                  debt of the pollution control or industrial revenue bond type;

         o        liens to secure loans to Indiana Gas maturing within 12 months
                  from  their  creation  and  made  in the  ordinary  course  of
                  business;

                                                         7






         o        liens on any property (including any natural gas, oil or other
                  mineral  property)  to  secure  all or  part  of the  cost  of
                  exploration,  drilling or  development  of the  property or to
                  secure debt incurred to provide funds for that purpose; or

         o        liens for the sole purpose of extending, renewing or replacing
                  in whole or in part debt secured by any lien referred to above
                  or in this bullet point,  so long as the  principal  amount of
                  debt  secured  does not  exceed the  principal  amount of debt
                  secured at the time of that extension, renewal or replacement,
                  and that the  extension,  renewal or replacement is limited to
                  all or a part of the property or  indebtedness  which  secured
                  the lien so extended,  renewed or replaced (plus  improvements
                  on such property).

         Other than the restrictions on the issuance of additional  secured debt
described  above,  there are no provisions of the indenture which afford holders
of the debt securities  protection in the event of a highly leveraged or similar
transaction  involving  Indiana Gas.  However,  such a transaction would require
regulatory  approval and  management  of Indiana Gas believes that such approval
would be unlikely in a highly leveraged or similar context.

Events of Default

         The following  constitute  events of default  under the indenture  with
respect to debt securities of any series:

         o        default in the payment of principal  of (or  premium,  if any,
                  on) any  debt  security  when  due and  continuing  for  three
                  business days;

         o        default in the payment of interest on any debt  security  when
                  due and continuing for 30 days;

         o        default in the payment of any sinking  fund  payment  when due
                  and continuing for three business days;

         o        default  in the  performance  or  breach  of any  covenant  or
                  warranty  of Indiana Gas in the  indenture  for the benefit of
                  such series and continuing for 60 days after written notice to
                  Indiana Gas as provided in the indenture;

         o        default  in the  payment of  principal,  premium,  if any,  or
                  interest  on  (after  any  applicable  period  of  grace),  or
                  acceleration  of,  indebtedness  evidenced by any other series
                  issued under the indenture or any other mortgage, indenture or
                  instrument,  or other evidence of  indebtedness of Indiana Gas
                  for  borrowed   money,  in  an  aggregate   amount   exceeding
                  $10,000,000,

                                                         8






                  which  default  is  not   rescinded,   or   indebtedness   not
                  discharged, within 90 days after written notice to Indiana Gas
                  as provided in the indenture;

         o        certain  events of bankruptcy,  insolvency or  reorganization;
                  and

         o        any other  event of  default  provided  with  respect  to debt
                  securities of that series.

         If an event of default occurs and is continuing,  either the trustee or
the holders of at least 33% in  aggregate  principal  amount of the  outstanding
debt  securities may declare the principal  amount of all debt  securities to be
due and payable  immediately.  At any time after the declaration of acceleration
with  respect to the debt  securities  has been made,  but before a judgment  or
decree based on  acceleration  has been  obtained,  the holders of a majority in
principal   amount  of  the  outstanding  debt  securities  may,  under  certain
circumstances, rescind and annul such acceleration.

         Subject to the  provisions of the  Indenture  relating to the duties of
the trustee,  before proceeding to exercise any right under the indenture at the
direction of the holders, the trustee is entitled to receive reasonable security
or indemnity from the holders.  The holders of a majority in principal amount of
the  outstanding  debt  securities  may  direct  the time,  method  and place of
conducting any proceeding for any remedy available to the trustee, or exercising
any  trust  or  power  conferred  on the  trustee,  with  respect  to  the  debt
securities.  The  holder of debt  securities  has an  absolute  right to receive
payment of principal,  premium,  if any, and interest when due and may institute
suit for the enforcement of any such payment.  The trustee must,  within 90 days
after a default  occurs  notify the  holders  of the  default,  unless  cured or
waived. The trustee may withhold notice of default (except default in payment of
principal  or  interest)  if it  determines  that it is in the  interest  of the
holders to do so. The trustee must withhold such notice for 45 days in the event
of a default relating to breaches of covenants or  representations  contained in
the indenture.

         Indiana Gas is required to furnish  annually to the trustee a statement
as to the  performance  by Indiana Gas of certain of its  obligations  under the
indenture and as to any default in that performance.

Consolidation, Merger, Sale or Conveyance

         Indiana Gas may not merge or  consolidate  with another  corporation or
sell or convey its  property  or assets as an entirety  or  substantially  as an
entity unless

         o        Indiana Gas is the  continuing  corporation  or the  successor
                  corporation  expressly  assumes the obligations of Indiana Gas
                  under the indenture, and

         o        Indiana Gas or the successor corporation immediately after the
                  transaction is not in default under the indenture.

                                                         9






Modification of the Indenture

         The  indenture  may be  modified  and  amended by  Indiana  Gas and the
trustee  with the consent of holders of a majority in  principal  amount of each
series of debt securities affected.  However, without the consent of each holder
of any debt security affected, no amendment or modification to any indenture may

         o        change the maturity of any debt security;

         o        reduce the principal amount of any debt security;

         o        change the currency of payment of principal or interest;

         o        reduce the  interest  rate or extend  the time for  payment of
                  interest;

         o        reduce the overdue rate;

         o        reduce any amount payable upon redemption;

         o        reduce the percentage in principal  amount of the  outstanding
                  debt securities of any series, the consent of whose holders is
                  required to modify or amend the indenture or waive default;

         o        change any  obligation of Indiana Gas to maintain an office or
                  agency in the place of payment for the debt securities;

         o        change the method of  calculating  the rate of interest of any
                  debt security;

         o        change any obligation of Indiana Gas to pay additional amounts
                  as provided in the indenture;

         o        change the place of payment; or

         o        impair  the right to  institute  suit for the  enforcement  of
                  payments on any debt security on or after the stated  maturity
                  date or date of redemption or repayment.

         The  indenture  permits  Indiana  Gas  and the  trustee  to  amend  the
indenture  without the consent of holders of any debt securities to evidence the
succession of another  entity to Indiana Gas or the  replacement  of the trustee
and for certain other purposes.



                                                        10



                              PLAN OF DISTRIBUTION

         Indiana Gas may sell securities:

         o        to the public through  underwriters  which may include Merrill
                  Lynch  &  Co.,   Merrill   Lynch,   Pierce,   Fenner  &  Smith
                  Incorporated,

         o        through  agents or dealers  which may include  Merrill Lynch &
                  Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated,

         o        directly to purchasers.

         In connection with the sale of the debt  securities,  underwriters  may
receive  compensation from Indiana Gas or from purchasers of the debt securities
for  whom  they  may act as  agents  in the form of  discounts,  concessions  or
commissions.  Underwriters  may sell the debt securities to or through  dealers,
and such dealers may receive compensation in the form of discounts,  concessions
or commissions from the underwriters  and/or commissions from the purchasers for
whom they may act as agents.  Underwriters,  dealers and agents that participate
in the distribution of the debt securities may be deemed to be underwriters, and
any discounts or commissions received by them from Indiana Gas and any profit on
the  resale of the debt  securities  by them may be  deemed  to be  underwriting
discounts  and   commissions   under  the  Securities  Act  of  1933.  Any  such
underwriter,  dealer  or agent  will be  identified,  and any such  compensation
received  from  Indiana Gas will be  described,  in a prospectus  supplement  or
pricing supplement.

         If  so  indicated  in  the  prospectus  supplement,  Indiana  Gas  will
authorize  underwriters  to solicit offers by certain  institutions  to purchase
debt  securities  from  Indiana  Gas  pursuant  to  delayed  delivery  contracts
providing  for  payment  and  delivery  on the  date  stated  in the  prospectus
supplement.  Each  contract  will be for an amount  not less than,  and,  unless
Indiana Gas otherwise agrees, the aggregate  principal amount of debt securities
sold pursuant to the contracts  shall not be more than, the  respective  amounts
stated in the prospectus supplement.  Institutions with whom the contracts, when
authorized,  may  be  made  include  commercial  and  savings  banks,  insurance
companies,  pension  funds,  investment  companies,  educational  and charitable
institutions,  and other institutions,  but shall in all cases be subject to the
approval of Indiana Gas. Delayed  delivery  contracts will not be subject to any
conditions  except that the purchase by an  institution  of the debt  securities
covered  under that  contract  shall not at the time of delivery  be  prohibited
under  the  laws  of any  jurisdiction  in  the  United  States  to  which  that
institution is subject.

         Indiana  Gas will  indemnify  the agents and the  underwriters  against
certain civil  liabilities,  including  liabilities  under the Securities Act of
1933, or contribute to payments the agents or the  underwriters  may be required
to make.



                                                        11



                       WHERE YOU CAN FIND MORE INFORMATION

         We file reports,  proxy statements and other  information with the SEC.
Our SEC filings are also  available  over the  Internet at the SEC's web site at
http://www.sec.gov.  You may also read and copy any document we file by visiting
the SEC's public  reference  rooms in Washington,  D.C., New York, New York, and
Chicago, Illinois. Please call the SEC at 1-800-SEC-0330 for further information
about the public reference rooms.

         We have  filed  a  registration  statement  on Form  S-3  with  the SEC
covering the debt  securities.  For further  information  on Indiana Gas and the
securities,  you should refer to our  registration  statement  and its exhibits.
This prospectus  summarizes material provisions of contracts and other documents
that we refer you to. Because the prospectus may not contain all the information
that you may find important, you should review the full text of these documents.
We have  included  copies of these  documents  as exhibits  to our  registration
statement of which this prospectus is a part.


                INCORPORATION OF INFORMATION WE FILE WITH THE SEC

         The SEC allows us to incorporate  by reference the  information we file
with them, which means

         o        incorporated documents are considered part of this prospectus;

         o        we can disclose important  information to you by referring you
                  to those documents; and

         o        information  that we file  with  the  SEC  will  automatically
                  update  and,  to  the  extent  inconsistent,   supersede  this
                  prospectus and previously incorporated information.

         We incorporate by reference the documents listed below which were filed
with the SEC under the Securities Exchange Act of 1934:

         o        annual report of Indiana Gas on Form 10-K for the year ended
                  September 30, 1998;

         o        quarterly reports of Indiana Gas on Form 10-Q for the quarters
                  ended December 31, 1998 and March 31, 1999;

         o        current  reports of Indiana  Gas on Form 8-K filed  October 9,
                  1998,  October 30, 1998,  January 27, 1999, April 22, 1999 and
                  April 30, 1999; and


                                                        12





         o        current report of Indiana Energy,  Inc. on Form 8-K filed June
                  15, 1999.  This filing  describes the proposed  merger between
                  our parent, Indiana Energy, and SIGCORP Inc.

         We also  incorporate by reference each of the following  documents that
we will file with the SEC after the date of this prospectus  until this offering
is  completed  or after the date of the  registration  statement  and before the
effectiveness of the registration statement:

         o        all documents filed under Sections  13(a),  13(c), 14 or 15(d)
                  of the Exchange Act; and

         o        any reports filed under Section 15(d) of the Exchange Act.

         You  should  rely only on  information  contained  or  incorporated  by
reference in this prospectus. We have not authorized any other person to provide
you with  different  or  additional  information.  If anyone  provides  you with
different  or  additional  information,  you  should  not rely on it. We are not
making an offer to sell these securities in any jurisdiction  where the offer or
sale is not permitted.

         You should assume that the information  appearing in this prospectus is
accurate  as of the  date of  this  prospectus  only.  Our  business,  financial
condition and results of operations may have changed since that date.

         You may  request a copy of any  filings  referred  to above  (excluding
exhibits), at no cost, by contacting us at the following address: Vice President
and  Treasurer,   Indiana  Gas  Company,   Inc.,  1630  North  Meridian  Street,
Indianapolis, Indiana 46202-1496, telephone (317) 926-3351.

                                     EXPERTS

         The  financial  statements  and  schedules  included  (incorporated  by
reference) in this prospectus and elsewhere in the  registration  statement have
been  audited  by  Arthur  Andersen  LLP,  independent  public  accountants,  as
indicated  in their  reports with respect  thereto,  and are included  herein in
reliance  upon  the  authority  of said  firm as  experts  (or,  as  experts  in
accounting and auditing) in giving said reports.

                                       13




                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14.  Other Expenses of Issuance and Distribution.

         The  following  table  sets  forth  the  expenses  to  be  incurred  in
connection  with  the  issuance  and   distribution  of  the  securities   being
registered. All amounts shown are estimates, except the registration fee.

  Securities and Exchange Commission
      registration fee .......................................     $ 27,800
  Fees and expenses of accountants ...........................       25,000
  Fees and expenses of counsel................................      125,000
  Blue Sky and legal investment
      fees and expenses.......................................        5,000
  Fees and expenses of Trustee................................       15,000
  Printing expenses...........................................       20,000
  Printing and engraving of Securities........................       23,000
  Rating agency fees..........................................       77,000
  Miscellaneous...............................................       15,000
                                                                   --------
      Total...................................................     $332,800
                                                                   ========

Item 15.  Indemnification of Directors and Officers.

           The  following  discussion of the  indemnification  provisions of the
Indiana Business  Corporation Law (Indiana Code ss. 23-1-37) (the "BCL"),  which
applies  to the  Company,  is a  summary,  is not meant to be  complete,  and is
qualified in its entirety by reference to the BCL.

           The  BCL   authorizes  a  corporation  to  indemnify  its  directors,
officers,  employees and agents against expenses in certain proceedings provided
such person (i) acted in good faith,  (ii)  reasonably  believed if acting in an
official capacity, that his conduct was in the best interest of the corporation,
or in all  other  cases,  that his  conduct  was at  least  not  opposed  to the
corporation's best interest,  and (iii) in the case of criminal  proceedings the
individual had reasonable  cause to believe that his conduct was lawful,  or had
no reasonable  cause to believe that his conduct was unlawful.  The BCL provides
further that a corporation shall indemnify its directors,  officers,  employees,
and agents  who are  wholly  successful,  on the  merits or  otherwise,  against
expenses in the defense of such  proceedings.  The BCL provides,  however,  that
this indemnification should not be deemed exclusive of any other indemnification
rights provided by the Articles of Incorporation,  By-Laws,  resolution or other
authorizations  adopted by a majority  vote of the voting shares then issued and
outstanding.


                                                       II-1






           Under the same  statute,  an Indiana  corporation  may  purchase  and
maintain insurance on behalf of any person who is or was a director, employee or
agent of the corporation, or is or was serving at the request of the corporation
as a  director,  officer,  employee or agent of another  enterprise  against any
liability  asserted  against him and  incurred by him in any such  capacity,  or
arising out of his status as such, whether or not the corporation would have the
power to indemnify him against such liability under the provisions of the BCL.

           Section  8.08,  Clause (b) of Article 8 of the Amended  and  Restated
Articles of Incorporation, as amended, of the Company provides as follows:

           Clause (b). Indemnification of Corporate Persons and Related Matters.
The following  provisions  apply to the  indemnification  by the  Corporation of
directors,  members  of any  committees  of the  Board of  Directors,  officers,
employees and agents of the Corporation  (collectively  "Corporate Persons") and
matters related thereto:

               (i)  Indemnification  Standards.  The Corporation shall indemnify
           any person who was or is a party or is  threatened to be made a party
           to any threatened,  pending or completed action,  suit or proceeding,
           whether civil or criminal, administrative or investigative, formal or
           informal  (an  "Action"),  by  reason of the fact that he is or was a
           Corporate  Person  of the  Corporation  or is or was  serving  at the
           request of the Corporation as a Corporate Person, partner, trustee or
           member  or  in  another   authorized   capacity   (collectively,   an
           "Authorized Capacity") of or for another Legal Entity, whether or not
           organized  or formed for  profit  (collectively,  "Another  Entity"),
           against  expenses   (including   attorneys'  fees)  ("Expenses")  and
           judgments,  penalties,  fines and amounts paid in settlement actually
           and  reasonably  incurred by him in connection  with such Action,  if
           such  person  (1)  acted in good  faith,  (2)  acted  in a manner  he
           reasonably believed (A) with respect to actions as a Corporate Person
           of the  Corporation,  to be in the best interests of the Corporation,
           or (B) with  respect to actions in an  Authorized  Capacity of or for
           Another  Entity,  was  not  opposed  to  the  best  interests  of the
           Corporation,  and (3) with respect to any criminal Action, either (A)
           had reasonable cause to believe his conduct was lawful, or (B) had no
           reasonable cause to believe his conduct was unlawful. The termination
           of any Action by judgment,  order, settlement,  conviction, or upon a
           plea of nolo contendere or its equivalent,  shall not, of itself,  be
           determinative  that  the  person  did  not  meet  the  standards  for
           indemnification set forth in this Clause (b)(i) (the "Indemnification
           Standards").

               (ii)  Indemnification  in Successfully  Defended Actions.  To the
           extent  that  a  person  who  is or  was a  Corporate  Person  of the
           Corporation,  or is or was serving at the request of the  Corporation
           in an  Authorized  Capacity  of  or  for  Another  Entity,  has  been
           successful  on the merits or  otherwise  in the defense of any Action
           referred to in Clause (b)(i)  above,  or in the defense of any claim,
           issue or matter in any such Action,  the Corporation  shall indemnify
           him  against  Expenses  actually  and  reasonably  incurred by him in
           connection therewith.


                                                       II-2






              (iii)  Indemnification  Procedure.  Unless ordered by a court, any
           indemnification of any person under Clause (b)(i) above shall be made
           by the  Corporation  only as  authorized  in the specific case upon a
           determination  that  indemnification  of such person is proper in the
           circumstances  because  he met the  Indemnification  Standards.  Such
           determination shall be made (1) by the Board, by a majority vote of a
           quorum consisting of Directors who are not at the time parties to the
           Action  involved  ("Parties");  or (2) if a quorum cannot be obtained
           under  Subparagraph  (1),  by a  majority  vote of a  Committee  duly
           designated  by the  Board  (in  which  designated  Directors  who are
           Parties may participate),  consisting solely of two or more Directors
           who  are  not at the  time  Parties;  or (3) by  written  opinion  of
           independent  legal  counsel (A) selected by the Board or Committee in
           the manner prescribed in Subparagraphs (1) or (2),  respectively,  or
           (B)  if a  quorum  cannot  be  obtained  and a  Committee  cannot  be
           designated under Subparagraphs (1) and (2), respectively, selected by
           a majority of the full Board,  in which  selection  Directors who are
           Parties may  participate;  or (4) by the  Shareholders who are not at
           the time Parties, voting together as a single class.

               (iv)  Advances  for  Expenses.  Expenses  reasonably  incurred in
           defending   an  Action  by  any  person  who  may  be   entitled   to
           indemnification  under  Clause  (b)(i)  above  may  be  paid  by  the
           Corporation in advance of the final disposition of such Action if (1)
           such person furnishes the Corporation with (A) a written  affirmation
           of  his  good  faith  belief  that  he has  met,  and  (B) a  written
           undertaking,  executed  personally  or on his  behalf,  to repay  the
           advance (an "Undertaking") if it is ultimately determined that he did
           not meet, the Indemnification  Standards;  and (2) a determination is
           made,  under the procedure set forth in Clause (b)(iii)  above,  that
           the facts then  known to those  making  the  determination  would not
           preclude  indemnification  under Clause (b)(i) above.  An Undertaking
           must be an unlimited general  obligation of the person making it, but
           need not be secured and may be accepted  by the  Corporation  without
           further  reference  to  such  person's   financial  ability  to  make
           repayment.

               (v) Rights Not Exclusive.  The indemnification  provided in these
           Articles  (1) shall not be deemed  exclusive  of any other  rights to
           which a person seeking  indemnification may be entitled under (A) any
           law,  (B) the  By-Laws,  (C) any  resolution  of the  Board or of the
           Shareholders,  (D) any other authorization,  whenever adopted,  after
           notice,  by a majority vote of all Shares entitled to vote on General
           Voting Matters, or (E) the articles of incorporation, code of by-laws
           or  other   governing   documents  or  any  resolution  of  or  other
           authorization  by the directors,  shareholders,  partners,  trustees,
           members, owners or governing body, of Another Entity; (2) shall inure
           to the benefit of the heirs,  executors  and  administrators  of such
           person;  and (3) shall  continue as to any such person who has ceased
           to be a Corporate  Person of the  Corporation  or to be serving in an
           Authorized Capacity for Another Entity.

               (vi) Insurance.  The Corporation shall have power to purchase and
           maintain  insurance on behalf of any person who is or was a Corporate
           Person of the Corporation, or is or was serving at the request of the
           Corporation in an Authorized Capacity of or for

                                                       II-3






           Another Entity,  against any liability  asserted against and incurred
           by him in any such  capacity,  or arising  out of his status as such,
           whether or not the Corporation  would have the power to indemnify him
           against such liability under the provisions of this Clause (b).

              (vii)  Definition of Corporation.  For the purposes of this Clause
           (b),   references  to  "the  Corporation"   include  any  constituent
           corporation  absorbed in a consolidation or merger (a  "Constituent")
           as well as the resulting or surviving  corporation (the  "Survivor"),
           such  that any  person  who is or was a  Corporate  Person  of such a
           Constituent,  or is or was serving at the request of such Constituent
           in an Authorized  Capacity of or for Another  Entity,  shall stand in
           the same  position  under  the  provisions  of this  Clause  (b) with
           respect to the Survivor as he would if he had served the Survivor, or
           at his request, in the same capacity.

           The Company maintains  directors' and officers'  liability  insurance
with an annual  aggregate  limit of  $35,000,000  for the current policy period,
subject to a $200,000  deductible at the corporate level and an excess policy of
$50,000,000, for each wrongful act where corporate reimbursement is available to
any  director or officer.  When  corporate  reimbursement  is not  available  as
prescribed by applicable  common law,  statutory law or the Company's  governing
documents,  the insurer  will  reimburse  the  directors  and  officers  with no
deductible with respect to losses sustained by them for specified  wrongful acts
while  acting  in  their  capacities,  individually  or  collectively,  as  such
directors or officers.

Item 16.  List of Exhibits.

           The exhibits required by this item are listed on page E-1.

Item 17.  Undertakings.

           (a) The undersigned  registrant hereby undertakes (1) to file, during
any period in which offers or sales are being made, a  post-effective  amendment
to this registration statement (i) to include any prospectus required by Section
10(a)(3) of the  Securities  Act of 1933;  (ii) to reflect in the prospectus any
facts or events arising after the effective date of the  registration  statement
(or the most recent post-effective amendment thereof) which,  individually or in
the aggregate,  represent a fundamental  change in the  information set forth in
the registration  statement;  and (iii) to include any material information with
respect to the plan of distribution not previously disclosed in the registration
statement  or any  material  change  to  such  information  in the  registration
statement; provided, however, that clauses (a)(1)(i) and (a)(1)(ii) do not apply
if the  information  required to be included in a  post-effective  amendment  by
those  clauses is contained in periodic  reports  filed with or furnished to the
Commission  by the  registrant  pursuant  to Section 13 or Section  15(d) of the
Securities  Exchange  Act of 1934  that are  incorporated  by  reference  in the
registration  statement;  (2) that, for the purpose of determining any liability
under the Securities Act of 1933,  each such  post-effective  amendment shall be
deemed to be a new  registration  statement  relating to the securities  offered
therein,  and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof; and (3) to remove from

                                                       II-4






registration by means of a post-effective  amendment any of the securities being
registered which remain unsold at the termination of the offering.

           (b) The undersigned  registrant  hereby undertakes that, for purposes
of determining  any liability  under the Securities Act of 1933,  each filing of
the registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Securities  Exchange  Act of 1934  (and,  where  applicable,  each  filing of an
employee  benefit  plan's  annual  report  pursuant  to  Section  15(d)  of  the
Securities  Exchange  Act of 1934)  that is  incorporated  by  reference  in the
registration  statement  shall  be  deemed  to be a new  registration  statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

           (c) Insofar as  indemnification  for  liabilities  arising  under the
Securities Act of 1933 may be permitted to directors,  officers and  controlling
persons of the  registrant  pursuant to the provisions  described  under Item 15
above, or otherwise,  the registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy
as expressed in the Act and is,  therefore,  unenforceable.  In the event that a
claim for  indemnification  against such liabilities  (other than the payment by
the  registrant  of  expenses  incurred  or  paid  by  a  director,  officer  or
controlling  person of the registrant in the  successful  defense of any action,
suit or proceeding) is asserted by such director,  officer or controlling person
in connection with the securities being registered,  the registrant will, unless
in the  opinion  of its  counsel  the matter  has been  settled  by  controlling
precedent,  submit to a court of appropriate  jurisdiction  the question whether
such  indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.




                                                       II-5






                                   SIGNATURES


           Pursuant  to the  requirements  of the  Securities  Act of 1933,  the
Company certifies that it has reasonable grounds to believe that it meets all of
the  requirements  for filing on Form S-3 and has duly caused this  registration
statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the City of Indianapolis, State of Indiana, on July 1, 1999.


                                          INDIANA GAS COMPANY, INC.



                                          By: /s/ Niel C. Ellerbrook
                                              ---------------------------------
                                              Niel C. Ellerbrook, President and
                                              Chief Executive Officer


           Pursuant to the  requirements  of the  Securities  Act of 1933,  this
registration  statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.


Signature                             Title                       Date


(1)  Principal Executive Officer


/s/ Niel C. Ellerbrook                President and Chief         July 1, 1999
- ------------------------------------  Executive Officer
Niel C. Ellerbrook

(2)  Principal Financial Officer


/s/ Niel C. Ellerbrook                President and Chief         July 1, 1999
- ------------------------------------  Executive Officer
Niel C. Ellerbrook

(3)  Principal Accounting Officer


/s/ Jerome A. Benkert, Jr.            Vice President and          July 1, 1999
- ------------------------------------  Controller
Jerome A. Benkert, Jr.



                                                       II-6






(4)  A Majority of the Board of Directors


Paul T. Baker                            Director
Niel C. Ellerbrook                       Director
Lawrence A. Ferger                       Director
Otto N. Frenzel III                      Director               July 1, 1999
William G. Mays                          Director
J. Timothy McGinley                      Director
John E. Worthen                          Director


By:  /s/ Niel C. Ellerbrook
     --------------------------------------
       Niel C. Ellerbrook, Attorney-in-Fact









                                                       II-7






                                  EXHIBIT INDEX


Exhibit 1            Proposed Form of Distribution Agreement between Indiana Gas
                     Company, Inc. and the Agents

Exhibit 4(a)         Indenture  dated as of February 1, 1991 between Indiana Gas
                     Company,  Inc.  and U.S.  Bank Trust  National  Association
                     (formerly known as First Trust National  Association  which
                     was formerly  known as Bank of America  Illinois  which was
                     formerly known as Continental Bank, National  Association),
                     as Trustee  (incorporated  by  reference to Exhibit 4(a) to
                     Indiana  Gas  Company,  Inc.'s  Current  Report on Form 8-K
                     dated February 1, 1991, and filed February 15, 1991); First
                     Supplemental  Indenture  thereto  dated as of February  15,
                     1991  (incorporated by reference to Exhibit 4(b) to Indiana
                     Gas  Company,  Inc.'s  Current  Report  on Form  8-K  dated
                     February  1,  1991 and filed  February  15,  1991);  Second
                     Supplemental  Indenture  thereto  dated as of September 15,
                     1991  (incorporated by reference to Exhibit 4(b) to Indiana
                     Gas  Company,  Inc.'s  Current  Report  on Form  8-K  dated
                     September 15, 1991 and filed  September  25,  1991);  Third
                     Supplemental  Indenture  thereto  dated as of September 15,
                     1991  (incorporated by reference to Exhibit 4(c) to Indiana
                     Gas  Company,  Inc.'s  Current  Report  on Form  8-K  dated
                     September 15, 1991 and filed  September  25, 1991);  Fourth
                     Supplemental Indenture thereto dated as of December 2, 1992
                     (incorporated  by  reference to Exhibit 4(b) to Indiana Gas
                     Company,  Inc.'s  Current Report on Form 8-K dated December
                     1, 1992 and filed December 8, 1992);  Officers' Certificate
                     pursuant to Section 301 of the Indenture  dated as of April
                     5, 1995  (incorporated  by  reference  to  Exhibit  4(a) to
                     Indiana  Gas  Company,  Inc.'s  Current  Report on Form 8-K
                     dated and filed April 5, 1995);  and Officers'  Certificate
                     pursuant  to  Section  301 of  the  Indenture  dated  as of
                     November 19, 1997  (incorporated  by reference to Exhibit 4
                     to Indiana Gas  Company,  Inc.  Current  Report on Form 8-K
                     dated and filed December 4, 1997).

Exhibit 4(b)         Proposed form of Officers'  Certificate pursuant to Section
                     301 of the Indenture.

Exhibit 5            Opinion of Barnes & Thornburg  with respect to the legality
                     of the securities registered hereunder.

Exhibit 12           Statement  re  computation  of ratios

Exhibit 23(a)        Consent of Arthur Andersen LLP


                                                        E-1





Exhibit 23(b)        Consent of Barnes & Thornburg (included in opinion of
                     counsel filed as Exhibit 5).

Exhibit 24           Powers of Attorney

Exhibit 25           Form T-1 Statement of Eligibility of Trustee