Exhibit 4.17



                                     FORM OF

                            CERTIFICATE OF AMENDMENT

                                     OF THE

                          CERTIFICATE OF INCORPORATION

                                       OF

                               KEYSPAN CORPORATION

                Under Section 805 of the Business Corporation Law
                            of the State of New York

         KeySpan Corporation, a corporation organized and existing under the
laws of the State of New York (the "Corporation"), does hereby certify as
follows:

          FIRST: The present name of the Corporation is KeySpan Corporation. The
Corporation was formed under the name "BL Holding Corp."

         SECOND: The Certificate of Incorporation of the Corporation was filed
with the New York Department of State on April 16, 1998. Certificates of
Amendment of the Certificate of Incorporation were filed with the New York
Department of State on May 26, 1998 and June 1, 1998, April 7, 1999 and May 20,
1999.

          THIRD:  The  amendment  of the  Certificate  of  Incorporation  of the
Corporation effected by this Certificate of Amendment is as follows:

                  To add provisions stating the number, designation, relative
                  rights, preferences, and limitations of the shares of the
                  Series __ Preferred Stock, as fixed by the Board of Directors
                  of the Corporation.

          FOURTH:  To  accomplish  the  foregoing  amendment,  Article IV of the
     Certificate of Incorporation  of the  Corporation,  relating to the capital
     stock of the Corporation is hereby amended as follows:

                  A Part __ shall be inserted at the end of Section 5 of Article
                  IV, and such Part __ shall read in its entirety as follows:

                  PART __                       SERIES __ PREFERRED STOCK

1.       Designations and Number of Shares.
         ----------------------------------

         __ shares of the Series __ Preferred Stock of the Corporation are
hereby constituted as a series of preferred stock, $__ par value per share,
stated value $__ per share (the "Series __ Stated Value"), and designated as
"Series __ Preferred Stock" (hereinafter called the "Series __ Preferred
Stock").

2.       Rank.
         -----

         The Series __ Preferred Stock shall, with respect to dividend
distributions and distributions upon the liquidation, winding up or dissolution
of the Corporation, rank senior to all classes of common stock of the
Corporation, and to each other class or series of capital stock of the
Corporation ranking junior to the Series __ Preferred Stock, whether now or
hereafter created (collectively referred to with the common stock of the
Corporation as "Junior Securities"). Subject to Subsection 9 of this Part __,
the Series __ Preferred Stock shall, with respect to dividend distributions and
distributions upon the liquidation, winding up or dissolution of the
Corporation, rank on a parity with the Series B Preferred Stock and the Series C
Preferred Stock and any other class or series of capital stock of the
Corporation hereafter created which expressly provides that it ranks on a parity
with the Series __ Preferred Stock as to dividend distributions or distributions
upon the liquidation, winding up or dissolution of the Corporation ("Parity
Securities"). Subject to Subsection 9 of this Part __, the Series __ Preferred
Stock shall, with respect to dividend distributions and distributions upon the
liquidation, winding up or dissolution of the Corporation, rank junior to each
class or series of capital stock of the Corporation hereafter created which
expressly provides that it ranks senior to the Series __ Preferred Stock as to
dividend distributions or distributions upon the liquidation, winding up or
dissolution of the Corporation ("Senior Securities").

3.       Dividends.
         ----------

     (a)  Beginning on the date of issuance of shares of the Series __ Preferred
Stock, the Holders of the outstanding  shares of Series __ Preferred Stock shall
be entitled to receive, when, as and if declared by the Board of Directors,  out
of funds legally available  therefor,  cash dividends on each share of Series __
Preferred  Stock,  at a per annum  rate  equal to __%,  payable  quarterly.  All
dividends shall be cumulative,  whether or not the Corporation has earnings, and
whether or not such dividends are declared,  on a daily basis from the Series __
Preferred  Stock Issue Date and shall be payable  quarterly  for each  Quarterly
Dividend  Period,  payable  ratably  per  share of  Series  __  Preferred  Stock
outstanding,  in arrears on each Designated Dividend Payment Date and commencing
on the first Designated Dividend Payment Date. Each dividend shall be payable to
the Holders of record of Series __ Preferred  Stock of record as they appear on
the stock books of the Corporation on such record dates,  not less than ten (10)
nor more than  forty-five  (45) days preceding the related  Designated  Dividend
Payment Date, as shall be fixed by the Board of Directors.  Holders of shares of
Series __  Preferred  Stock shall not be  entitled to any  dividend in excess of
full cumulative dividends, as herein provided, on the Series __ Preferred Stock.
No  interest  shall be  payable in  respect  of any  dividends  on the Series __
Preferred Stock which may be in arrears.

     (b) All dividends paid with respect to shares of Series __ Preferred  Stock
pursuant to  paragraph  3(a) of this Part __ shall be paid  ratably on Series __
Preferred Stock to the Holders thereof entitled thereto.

     (c)  Dividends  on account of arrears for any past  Dividend  Period may be
declared and paid at any time, without reference to any regular Dividend Payment
Date, to Holders of Series __ Preferred  Stock of record on such date,  not less
than ten (10)  days nor more than  forty-five  (45)  days  prior to the  payment
thereof, as may be fixed by the Board of Directors.

     (d) Except as provided in the next sentence, no dividends shall be declared
by the Board of Directors or paid or funds set apart for payment of dividends by
the  Corporation  on any Parity  Securities for any period unless all cumulative
dividends shall have been or contemporaneously are declared and paid in full, or
declared and a sum in cash set apart  sufficient for such payment,  on Series __
Preferred Stock for all Dividend Periods  terminating on or prior to the date of
payment of such full dividends on such Parity  Securities.  If dividends are not
declared or paid in full, as stated above,  upon, or funds are not set apart for
payment of dividends on, the shares of Series __ Preferred  Stock and any Parity
Securities,  dividends may nonetheless be declared or paid upon shares of Series
__ Preferred Stock and any Parity Securities, but only so long as such dividends
are  declared  ratably  on  Series  __  Preferred  Stock so that the  amount  of
dividends declared per share on the shares of Series __ Preferred Stock and such
Parity  Securities  shall in all cases  bear to each  other the same  ratio that
accrued  and unpaid  dividends  per share on the  shares of Series __  Preferred
Stock and such Parity Securities bear to each other.

     (e) So long as any shares of Series __ Preferred Stock are outstanding, the
Corporation shall not (i) declare,  pay or set apart for payment any dividend on
any Junior  Securities or make, and shall not permit any of its  subsidiaries to
make, any payment on account of, or set apart for payment money for a sinking or
other similar fund for, the purchase,  redemption  or other  retirement  of, any
Junior Securities or any warrants,  rights,  calls or options exercisable for or
convertible into any Junior  Securities or (ii) make any distribution in respect
thereof,  either  directly or  indirectly,  and whether in cash,  obligations or
shares  of the  Corporation  or other  property  (other  than  distributions  or
dividends in Junior Securities to the holders of Junior  Securities),  unless in
any such case  referred  to in  clause  (i) or (ii) of this  paragraph  3(e) all
cumulative  dividends determined in accordance herewith for all Dividend Periods
terminating on or prior to the date of such payment,  distribution,  purchase or
redemption have been paid in full in cash on the Series __ Preferred Stock.

     (f) Dividends  payable on shares of Series __ Preferred  Stock for any full
Quarterly  Dividend  Period  shall be in the amount of $__ per share.  Dividends
payable on shares of Series __  Preferred  Stock for any period less than a full
Quarterly Dividend Period, or for the Initial Dividend Period, shall be computed
on the basis of a 360-day year of twelve  30-day months and the actual number of
days elapsed in the period for which such  dividends are payable.  If any Series
__ Dividend Payment Date occurs on a day that is not a Business Day, any accrued
dividends  otherwise  payable on such Series __ Dividend  Payment  Date shall be
paid on the next succeeding Business Day.

     (g) If, prior to 18 months  after the date of the original  issuance of the
Series __ Preferred  Stock,  one or more amendments to the Internal Revenue Code
of 1986, as amended (the "Code"),  are enacted that reduce the percentage of the
dividends-received  deduction  (currently 70%) as specified in section 243(a)(1)
of the Code or any successor  provision (the  "Dividends-Received  Percentage"),
the  amount of each  dividend  payable  (if  declared)  per share of Series  ___
Preferred  Stock for dividend  payments made on or after the  effective  date of
such  change in the Code  will be  adjusted  by  multiplying  the  amount of the
dividend payable described above (before  adjustment) by the following  fraction
(the "DRD Formula"),  and rounding the result to the nearest cent (with one-half
cent rounded up):

                                 [1 - .35(1.70)
                                  -------------
                                 1 - .35(1-DRP)]


         For the purposes of the DRD Formula. "DRP" means the Dividends-Received
Percentage (expressed as a decimal) applicable to the dividend in question;
provided, however, that if the Dividends-Received Percentage applicable to the
dividend in question shall be less than 50%, then the DRP shall equal [.50].
Notwithstanding the foregoing provisions, if, with respect to any such
amendment, the Corporation receives either an unqualified opinion of nationally
recognized independent tax counsel selected by the Corporation or a private
letter ruling or similar form of authorization from the Internal Revenue Service
("IRS") to the effect that such amendment does not apply to a dividend payable
on the Series __ Preferred Stock, then such amendment will not result in the
adjustment provided for pursuant to the DRD Formula with respect to such
dividend. Such opinion shall be based upon the legislation amending or
establishing the DRP or upon a published pronouncement of the IRS addressing
such legislation.

         If any such amendment to the Code is enacted after the dividend payable
on a Designated Dividend Payment Date has been declared, the amount of the
dividend payable on such Designated Dividend Payment Date will not be increased;
instead, additional dividends (the "Post Declaration Date Dividends") equal to
the excess, if any, of (x) the product of the dividend paid by the Corporation
on such Designated Dividend Payment Date and the DRD Formula (where the DRP used
in the DRD Formula would be equal to the greater of the Dividend-Received
Percentage applicable to the dividend in question and [.50]) over (y) the
dividend paid by the Corporation on such Dividend Payment Date, will be payable
(if declared) on the next succeeding Designated Dividend Payment Date to holders
of Series __ Preferred Stock on the Designated Dividend Payment Record Date
applicable to such Designated Dividend Payment Date or, if the Series __
Preferred Stock is called for redemption prior to such Designated Dividend
Payment Record Date, to holders of Series __ Preferred Stock on the applicable
redemption date, as the case may be, in addition to any other amounts payable on
such date. Notwithstanding the foregoing provisions, if, with respect to any
such amendment, the Corporation receives either an unqualified opinion of
nationally recognized independent tax counsel selected by the Corporation or a
private letter ruling or similar form of authorization from the IRS to the
effect that such amendment does not apply a dividend so payable on the Series __
Preferred Stock, then such amendment will not result in the payment of Post
Declaration Date Dividends. The opinion referenced in the previous sentence
shall be based upon the legislation amending or establishing the DRP or upon a
published pronouncement of the IRS addressing such legislation.

     In any such  amendment  to the Code is  enacted  and the  reduction  in the
Dividends-Received  Percentage  retroactively  applies to a Designated  Dividend
Payment Date as to which the Corporation previously paid dividends on the Series
__ Preferred Stock (each, an "Affected  Dividend Payment Date"), the Corporation
will pay (if declared) additional dividends (the "Retroactive Dividends") on the
next  succeeding  Designated  Dividend  Payment  Date to  holders  of  Series __
Preferred  Stock  on  the  Dividend  Payment  Record  Date  applicable  to  such
Designated  Dividend  Payment Date (or, if such  amendment is enacted  after the
dividend payable on such Designated Dividend Payment Date has been declared,  to
holders  of  Series __  Preferred  Stock on the  Dividend  Payment  Record  Date
following the date of enactment) or, if the Series Preferred Stock is called for
redemption  prior to such Dividend  Payment Record Date, to holders of Series __
Preferred  Stock on the  applicable  redemption  date, as the case may be, in an
amount  equal to the  excess  of (x) the  product  of the  dividend  paid by the
Corporation  on each Affected  Dividend  Payment Date and the DRD Formula (where
the  DRP  used  in  the  DRD  Formula  would  be  equal  to the  greater  of the
Dividends-Received  Percentage  and  [.50]  applied  to each  Affected  Dividend
Payment Date) over (y) the sum of the dividend paid by the  Corporation  on each
Affected  Dividend  Payment Date. The Corporation  will only make one payment of
Retroactive  Dividends  for any such  amendment.  Notwithstanding  the foregoing
provisions,  if, with respect to any such amendment,  the  Corporation  receives
either an unqualified opinion of nationally  recognized  independent tax counsel
selected  by the  Corporation  or a private  letter  ruling or  similar  form of
authorization from the IRS to the effect that such amendment does not apply to a
dividend  payable  on an  Affected  Dividend  Payment  Date  for the  Series  __
Preferred  Stock,  then  such  amendment  will  not  result  in the  payment  of
Retroactive  Dividends with respect to such Affected  Dividend Payment Date. The
opinion  referenced in the previous sentence shall be based upon the legislation
amending or establishing  the DRP or upon a published  pronouncement  of the IRS
addressing such legislation.

         Notwithstanding the foregoing, no adjustment in the dividends payable
by the Corporation shall be made, and no Post Declaration Date Dividends or
Retroactive Dividends shall be payable by the Corporation, in respect of the
enactment of any amendment to the Code 18 months or more after the date of
original issuance of the Series __ Preferred Stock that reduces the
Dividends-Received Percentage.

         In the event that the amount of dividends payable per share of the
Series __ Preferred Stock is adjusted pursuant to the DRD Formula and/or Post
Declaration Date Dividends or Retroactive Dividends are to be paid, the
Corporation will give notice of each such adjustment and, if applicable, any
Post Declaration Date Dividends and Retroactive Dividends to the holders of
Series __ Preferred Stock.

4.       Liquidation Preference.
         -----------------------

     (a) Upon any voluntary or involuntary  liquidation,  dissolution or winding
up of the  affairs  of the  Corporation,  the  Holders  of  shares  of Series __
Preferred Stock then outstanding shall be entitled to be paid, out of the assets
of the Corporation available for distribution to its shareholders, $__ per share
of Series __ Preferred Stock, plus an amount in cash equal to accrued and unpaid
dividends thereon to the date of final distribution, before any payment shall be
made  or any  assets  distributed  to the  holders  of  any  Junior  Securities,
including,  without limitation, the Common Stock of the Corporation.  After such
amount is paid in full, no further  distributions  or payments  shall be made in
respect of Series __ Preferred  Stock,  the Series __  Preferred  Stock shall no
longer  be  deemed  to be  outstanding  or be  entitled  to  any  other  powers,
preferences,  rights or  privileges,  including  voting  rights,  and,  upon the
Corporation's   written  request,   the  Series  __  Preferred  Stock  shall  be
surrendered for cancellation to the Corporation.

     (b) If the assets of the  Corporation are not sufficient to pay in full the
liquidation  payments payable to the Holders of outstanding  shares of Series __
Preferred Stock and the holders of all outstanding  shares of Parity Securities,
then the  holders of all such  shares  shall  share  equally and ratably in such
distribution  of assets of the  Corporation in accordance with the amounts which
would  be  payable  on such  shares  if the  amount  to  which  the  Holders  of
outstanding  shares of Series __ Preferred  Stock and the holders of outstanding
shares of all Parity Securities are entitled were paid in full.

     (c) Written  notice of any  liquidation,  dissolution  or winding up of the
affairs of the Corporation, stating the payment date or dates when and the place
or  places  where  the  amounts  distributable  in such  circumstances  shall be
payable,  shall be given by first class  mail,  postage  prepaid,  not less than
thirty (30) days prior to any payment  date  stated  therein,  to the Holders of
Series __ Preferred Stock at their respective addresses as the same shall appear
on the stock books of the Corporation.

     (d) For the purposes of this  Subsection 4 (and subject to  Subsection 9 of
this Part __),  neither the sale,  conveyance,  exchange or transfer  (for cash,
shares of stock,  securities or other consideration) of all or substantially all
of the property or assets of the Corporation nor the  consolidation or merger of
the Corporation with or into one or more corporations or other entities shall be
deemed to be a  liquidation,  dissolution  or winding  up of the  affairs of the
Corporation.

5.       Optional Redemption.
         --------------------

     (a) The shares of Series __  Preferred  Stock  shall not be  redeemable  or
otherwise  purchased by the Corporation prior to the [fifth]  anniversary of the
Series __ Preferred Stock Issue Date. On and after the fifth  anniversary of the
Series __ Preferred Stock Issue Date, the Corporation may, at its option, redeem
at any time or from time to time, in whole or in part, in the manner provided in
this  Subsection  5, any or all of the shares of the Series __ Preferred  Stock,
[at a  redemption  price  equal to $__ per share plus an amount in cash equal to
all  accrued and unpaid  dividends  thereon to the date of  redemption  plus the
Make-Whole  Premium.]  [at the  redemption  prices set forth  below if  redeemed
during the  twelve-month  period beginning on the _______ of the years indicated
below,  plus an amount in cash equal to all accrued and unpaid dividends thereon
to the date of redemption:

                  Year                               Redemption Price

                  20__..............................$

                  20__..............................$

                  20__..............................$

                  20__..............................$

     (b) In the event of a redemption of only a portion of the then  outstanding
shares of the Series __  Preferred  Stock,  the  Corporation  shall  effect such
redemption  ratably  according  to the  number of shares of Series __  Preferred
Stock held by each Holder.

     (c) Not less than  twenty  (20) days nor more than sixty (60) days prior to
the date fixed for any  redemption  of the Series __  Preferred  Stock,  written
notice of redemption  (the  "Redemption  Notice")  shall be given by first-class
mail,  postage  prepaid,  to each Holder,  at such Holder's  address as the same
appears on the stock books of the Corporation; provided that neither the failure
to give such notice nor any deficiency  therein shall affect the validity of the
procedure for the  redemption  of any shares of Series __ Preferred  Stock to be
redeemed  except as to the Holder or Holders to whom the  Corporation has failed
to give said  notice or except as to the  Holder or  Holders  whose  notice  was
defective.  The Redemption  Notice shall state: (i) the redemption  price;  (ii)
whether all or less than all the  outstanding  shares of the Series __ Preferred
Stock  are to be  redeemed  and the total  number  of  shares  of the  Series __
Preferred  Stock  being  redeemed;  (iii)  the  number  of  shares  of Series __
Preferred  Stock  held by the  Holder  being  redeemed;  (iv) the date fixed for
redemption; (v) that the Holder is to surrender to the Corporation, at the place
or places where  certificates  for shares of Series __ Preferred Stock are to be
surrendered  for  redemption,  in the  manner and at the place  designated,  his
certificate or certificates representing the shares of Series __ Preferred Stock
to be redeemed; and (vi) that dividends on the shares of the Series __ Preferred
Stock to be  redeemed  shall  cease to accrue on the date  fixed for  redemption
unless the  Corporation  defaults in the payment of the redemption  price.  Such
Redemption  Notice shall also include a calculation of the applicable  estimated
Make- Whole Premiums due in connection  with such  redemption  (calculated as if
the date of such  notice  were the date of the  redemption),  setting  forth the
details of such  computation.  Two Business Days prior to such  redemption,  the
Corporation  shall  deliver  to each  Holder  of  Series  __  Preferred  Stock a
certificate  of a senior  financial  officer of the  Corporation  specifying the
calculation of such Make-Whole Premiums as of the specified redemption date.

     (d) Each  Holder  of  shares  of  Series  __  Preferred  Stock  called  for
redemption  shall  surrender to the  Corporation the certificate or certificates
representing his shares of Series __ Preferred Stock to be redeemed at the place
designated in the Redemption Notice, and upon such surrender the full redemption
price  for  such  shares  shall  be  payable  in cash to such  Holder,  and each
surrendered  certificate  shall be canceled and retired.  In the event that less
than all of the shares  represented by any such certificate are redeemed,  a new
certificate  shall be issued  representing the unredeemed shares without cost to
the Holder thereof.

     (e) In  connection  with any  redemption  pursuant to this  Subsection 5 or
Subsection  6 of this Part __ below,  unless  the  Corporation  defaults  in the
payment in full of the applicable  redemption price,  dividends on the shares of
Series __  Preferred  Stock called for  redemption  shall cease to accrue on the
date fixed for  redemption,  and the Holders of such shares  shall cease to have
any further rights with respect thereto on the date fixed for redemption,  other
than the right to receive the redemption price, without interest.

[6.      Mandatory Redemption.
         ---------------------

         On the _____ anniversary of the Series __ Preferred Stock Issue Date
(the "Mandatory Redemption Date," all of the outstanding shares of Series __
Preferred Stock shall be redeemed, at a redemption price equal to $ __ per share
plus an amount in cash equal to all accrued and unpaid dividends thereon to the
date of redemption.]

7.       Voting Rights.
         --------------

     (a) The  Holders  of  shares  of Series  __  Preferred  Stock  shall not be
entitled or  permitted  to vote on any matter  required or permitted to be voted
upon by the shareholders of the Corporation, except as otherwise required by law
or as set forth below in this Subsection 7 or in Subsection 9 below.

     (b) The  Series  __  Preferred  Stock,  except  as  provided  herein  or as
otherwise  from time to time  required  by law,  shall  have no  voting  rights.
Whenever,  at any time or  times,  dividends  payable  on  shares  of  Series __
Preferred Stock or on any Parity Securities shall be in arrears for an aggregate
number  of  days  equal  to  six  calendar  quarters  or  more,  whether  or not
consecutive,  the  authorized  number  of  directors  of the  Corporation  shall
automatically  be  increased  by two and the holders of the Series __  Preferred
Stock  shall  have the  right,  with  holders of shares of any one or more other
classes or series of Parity  Securities  outstanding at the time upon which like
voting  rights have been  conferred and are  exercisable  and the terms of which
specify  that such  Parity  Securities  shall vote with the Series __  Preferred
Stock in such circumstances ("Voting Parity Stock"), voting together as a class,
to  elect  two  directors  (hereinafter  the  "Preferred  Directors"  and each a
"Preferred   Director")  to  fill  such  newly  created   directorships  at  the
Corporation's  next annual meeting of stockholders and at each subsequent annual
meeting of  stockholders  until such  arrearages have been paid or set aside for
payment,  at which time such right shall  terminate,  except as herein or by law
expressly  provided,  subject  to  revesting  in the  event  of each  and  every
subsequent default of the character above mentioned. Upon any termination of the
right of the holders of shares of Series __  Preferred  Stock and Voting  Parity
Stock as a class to vote for directors as provided above,  the term of office of
all  Preferred  Directors  then in office shall  terminate  immediately  and the
authorized  number of  directors  shall be reduced  by the  number of  Preferred
Directors elected pursuant hereto.  Any Preferred Director may be removed at any
time,  with or without cause.  Any vacancy created thereby may be filled only by
the  affirmative  vote of the  holders  of shares of Series __  Preferred  Stock
voting  separately  as a class  (together  with the  holders of shares of Voting
Parity Stock).  If the office of any Preferred  Director  becomes vacant for any
reason other than  removal from office as  aforesaid,  the  remaining  Preferred
Director may choose a successor who shall hold office for the unexpired  term in
respect of which such vacancy  occurred.  At elections for such directors,  each
holder of shares of Series __ Preferred Stock shall be entitled to ten votes for
each  share held (the  holders of shares of any other  class or series of Voting
Parity Stock being  entitled to such number of votes,  if any, for each share of
such stock held as may be granted to them).

     (c) In any case in which the Holders of shares of Series __ Preferred Stock
shall  be  entitled  to  vote  pursuant  to this  Subsection  7 or  pursuant  to
applicable  law,  each  Holder of shares of Series __  Preferred  Stock shall be
entitled to [one vote] for each share of Series __ Preferred Stock held.

8.       Conversion or Exchange.
         -----------------------

         The Holders of shares of Series __ Preferred Stock shall not have any
rights or obligations to convert such shares into or exchange such shares for
shares of any other class or classes or of any other series of any class or
classes of capital stock of the Corporation or any other securities of the
Corporation.

9.       Restrictions.
         -------------

         So long as any shares Series __ Preferred Stock are outstanding, the
Corporation shall not without authorization (given in person or by proxy, in
writing or at a meeting duly called for that purpose in accordance with Section
605 of the Business Corporation Law of the State of New York or as otherwise
permitted by law) by at least:

     (a) two-thirds of the votes entitled to be cast by the Holders of the total
number of shares of Series __ Preferred Stock then outstanding:

(i)      amend, alter, change or repeal any of the express terms of the Series
         __ Preferred Stock then outstanding in any manner that would materially
         affect the Holders of such shares;

(ii)     create or authorize any class of stock having a preference superior to
         the preferences of Series __ Preferred Stock as to assets or dividends,
         or create or authorize any security convertible into shares of stock of
         any such kind; or

     (b) a majority of the votes entitled to be cast by the Holders of the total
number of shares of Series __  Preferred  Stock then  outstanding  increase  the
number of Shares of Series __ Preferred  Stock or create or authorize  any class
of Parity Securities;  provided that the Corporation may increase the authorized
number of shares of Series __  Preferred  Stock or create  additional  series of
Parity Securities without the authorization of a majority of the Holders if such
action  was  authorized  by the  shareholders  of the  Corporation  prior to the
creation of the Series __ Preferred Stock.

10.      Definitions.
         ------------

          The  following  terms  shall  have the  meanings  set forth  below for
          purposes of this Part __:

         "Board of Directors" means the Board of Directors of the Corporation.

         "Business Day" means any day other than Saturday, Sunday or a day on
which banking institutions in the City of New York are authorized by law,
regulation or executive order to remain closed.

         "Certificate of Incorporation" means the Corporation's Certificate of
Incorporation, as amended from time to time.

         "Corporation" means this corporation.

         "Designated Dividend Payment Date" means each __, __, __ and __
following the Series __ Preferred Stock Issue Date.

         ["Discounted Value" means, with respect to any shares of Series __
Preferred Stock, the amount obtained by discounting all Remaining Scheduled
Payments with respect to such shares of Series __ Preferred Stock from their
respective scheduled due dates to the Optional Redemption Date, in accordance
with accepted financial practice and at a discount factor (applied on the same
periodic basis as that on which dividends with respect to the Series __
Preferred Stock are payable) equal to the Reinvestment Yield with respect to the
Series __ Stated Value.]

         "Dividend Payment Record Date" means each ___________, _____________,
___________ and ____________ preceding the immediately following Designated
Dividend Payment Date.

         "Dividend Period" means the Initial Dividend Period and, thereafter,
each Quarterly Dividend Period.

         "Holder" means a Person in whose name a share of Series __ Preferred
Stock is registered.

         "Initial Dividend Period" means the dividend period commencing on the
Series __ Preferred Stock Issue Date and ending on the day before the first
Series __ Dividend Payment Date to occur thereafter.

         ["Make-Whole Premium" means, with respect to any shares of Series __
Preferred Stock, an amount equal to the excess, if any, of (a) the Discounted
Value of the Remaining Scheduled Payments with respect to the Series __
Preferred Stock over (b) the Series __ Stated Value of such shares of Series __
Preferred Stock; provided that the Make-Whole Premium may in no event be less
than zero.]

         "Optional Redemption Date" means, with respect to the any share of
Series __ Preferred Stock, the date on which the Corporation redeems such share
in accordance with paragraph 5(a) of this Part _.

         "Person" means any individual, corporation, partnership, joint venture,
association, limited liability company, joint-stock company, trust,
unincorporated organization or government or agency or political subdivision
thereof (including any subdivision or ongoing business of any such entity or
substantially all of the assets of any such entity, subdivision or business).

         "Quarterly Dividend Period" shall mean each of the quarterly periods
ending on the last day of __, __, __ and __ of each year.

         "Redemption Date" means, with respect to any shares of Series __
Preferred Stock, the date on which such shares of Series __ Preferred Stock are
redeemed by the Corporation.

         ["Reinvestment Yield" means, with respect to the Series __ Stated Value
of any shares of Series __ Preferred Stock, 0.__% over the yield to maturity
implied by (a) the yields reported, as of 10:00 A.M. (New York City time) on the
second Business Day preceding the Optional Redemption Date with respect to the
Series __ Stated Value, on the display designated as ["Page 678" on the Dow
Jones Markets Service (or such other display as may replace Page 678 on Dow
Jones Markets Service)] for actively traded U.S. Treasury securities having a
maturity equal to the Remaining Life of the Series __ Stated Value as of such
Optional Redemption Date, or (b) if such yields are not reported as of such time
or the yields reported as of such time are not ascertainable, the Treasury
Constant Maturity Series Yields reported, for the latest day for which such
yields have been so reported as of the second Business Day preceding the
Optional Redemption Date with respect to the Series __ Applicable Stated Value,
in Federal Reserve Statistical Release H.15 (519) (or any comparable successor
publication) for actively traded U.S. Treasury securities having a constant
maturity equal to the Remaining Life of the Series __ Stated Value as of such
Optional Redemption Date. Such implied yield will be determined, if necessary,
by (i) converting U.S. Treasury bill quotations to bond-equivalent yields in
accordance with accepted financial practice and (ii) interpolating linearly
between (A) the actively traded U.S. Treasury security with the duration closest
to and greater than the Remaining Life and (B) the actively traded U.S. Treasury
security with the duration closest to and less than the Remaining Life.]

         ["Remaining Life" means, with respect to the Series __ Stated Value,
the number of years (calculated to the nearest one-twelfth year) that will
elapse between the Optional Redemption Date with respect to the Series __ Stated
Value and the Mandatory Redemption Date.]

         ["Remaining Scheduled Payments" means the payment of the Series __
Stated Value of shares of Series __ Preferred Stock and dividends thereon that
would be due after the Optional Redemption Date with respect to the Series __
Stated Value if no payment of the Series __ Stated Value were made prior to the
Mandatory Redemption Date; provided that if such Optional Redemption Date is not
a date on which dividends are due to be made under the terms hereof, then the
amount of the next succeeding dividend payment will be reduced by the amount of
accrued dividends to such Optional Redemption Date and required to be paid on
such Optional Redemption Date.]

         "Series __ Preferred Stock Issue Date" means the date on which the
Series __ Preferred Stock is originally issued by the Corporation.

     FIFTH: The foregoing  amendments to the Certificate of  Incorporation  were
duly  adopted by [a Unanimous  Written  Consent of the Board of Directors of the
Corporation]  [a majority of the Board of  Directors  of the  Corporation]  [the
_____  Committee  of the  Board of  Directors  of the  Corporation  pursuant  to
authority  granted to that  Committee  by the Board of  Directors]  pursuant  to
authority vested in it by the Certificate of  Incorporation,  the by-laws of the
Corporation  and pursuant to Section 502 of the Business  Corporation Law of the
State of New York,  at a meeting  duly held on the ______  day of  ____________,
20__.








         IN WITNESS WHEREOF, the undersigned officers of the Corporation have
signed this Certificate of Amendment and each affirms that the statements made
herein are true under the penalties of perjury.

Dated: ___________ __, 200_

                                    KEYSPAN CORPORATION


                                    By:
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                                       Name:
                                       Title:


                                    By:
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                                       Name:
                                       Title: