Exhibit 3.8
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                            CERTIFICATE OF AMENDMENT
                                     OF THE
                          CERTIFICATE OF INCORPORATION
                                       OF
                            HUDSON TECHNOLOGIES, INC.









                       -----------------------------------
                                February 16, 2001
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                            CERTIFICATE OF AMENDMENT
                                     OF THE
                          CERTIFICATE OF INCORPORATION
                                       OF
                           HUDSON TECHNOLOGIES, INC.

               under Section 805 of the Business Corporation Law
                         ------------------------------

     The  undersigned,  being the  Chairman  and  Chief  Executive  Officer  and
Secretary, respectively, of Hudson Technologies, Inc. (the "Corporation") hereby
certify that:

     A. The name of the Corporation is HUDSON TECHNOLOGIES, INC. The Corporation
was formed under the name REFRIGERANT RECLAMATION INDUSTRIES, INC.

     B. The Certificate of Incorporation  was filed with the Department of State
on January 10, 1991.

     C. On March  30,  1999,  the Board of  Directors  of the  Corporation  duly
adopted resolutions in order to designate  seventy-five thousand (75,000) shares
as Series A Preferred Stock.

     D. On February 15, 2001,  the Board of  Directors of the  Corporation  duly
adopted  resolutions  in order to increase  the number of shares  designated  as
Series  A  Preferred  Stock  (as  set  forth  in  the  resolution   below)  from
seventy-five thousand (75,000) to one hundred fifty thousand (150,000).

     E. The  resolution  contained  herein  has not been  modified,  altered  or
amended and is presently in full force and effect.

     F.  To  effectuate  the  foregoing,  Paragraph  (5) of the  Certificate  of
Incorporation,  which refers to the  authorized  shares of the  Corporation,  is
hereby amended by adding the following to the end of said Paragraph (5):

     RESOLVED,  that pursuant to the authority  expressly vested in the Board of
Directors of the Corporation by Paragraph 5 of the Certificate of  Incorporation
of the  Corporation,  the Board of  Directors  hereby fixes and  determines  the
voting   rights,   designations,   preferences,   qualifications,    privileges,
limitations,  restrictions,  options,  conversion  rights  and other  special or
relative rights of the foregoing  series of the preferred  stock, par value $.01
per share,  which shall be designated as Series A  Convertible  Preferred  Stock
(the "Series A Preferred Stock").



     1.  Designation.  One hundred fifty thousand  (150,000) shares of preferred
stock, par value $.01 per share, of the Corporation are hereby  constituted as a
series of the preferred  stock  designated  as "Series A  Convertible  Preferred
Stock";  provided,  however, that the Corporation shall issue any such shares in
excess of  ninety-five  thousand  (95,000) only to pay dividends on the Series A
Preferred Stock as provided in Section 2(a)(i).

     2. Dividends.

     (a) Dividends on Series A Preferred Stock. The Corporation  shall pay, when
and as declared by the Corporation's  Board of Directors,  to the holders of the
Series A Preferred Stock, out of the assets of the Corporation legally available
therefor,  dividends at the times,  in the amounts and with such  priorities  as
follows:

          (i) Dividend  Rate.  Dividends  on shares of Series A Preferred  Stock
will be payable in  arrears  in cash or, at the  option of the  Corporation,  in
additional  shares of Series A Preferred Stock, at a rate per annum equal to (x)
until March 31, 2004,  7.00% of the Preferred  Liquidation  Value thereof on the
Dividend  Payment  Date and (y) on and  after  March  31,  2004,  16.00%  of the
Preferred Liquidation Value thereof on the Dividend Payment Date. Dividends will
be calculated on the basis of a 360-day year.

          (ii) Accrual of Dividends.

          (A)  Dividends on each share of Series A Preferred  Stock shall accrue
     cumulatively  on a daily basis from the Issue Date to the date on which the
     redemption or  conversion  of such share of Series A Preferred  Stock shall
     have been  effected,  whether or not such  dividends have been declared and
     whether or not there shall be (at the time such dividends  became or become
     payable  or any  other  time)  profits,  surpluses  or  other  funds of the
     Corporation legally available for the payment of dividends.

          (B) To the extent not paid on any Dividend Payment Date for any reason
     other than the  Corporation's  compliance  with Section  2(b)  hereof,  all
     dividends  which have accrued on any share of Series A Preferred Stock then
     outstanding  during the period from and including  the  preceding  Dividend
     Payment  Date (or  from and  including  the  Issue  Date in the case of the
     initial  Dividend  Payment Date) to (but excluding)  such Dividend  Payment
     Date  shall  be  added  on such  Dividend  Payment  Date  to the  Preferred
     Liquidation  Value of such  share of  Series A  Preferred  Stock  (so that,
     without  limitation,  dividends shall  thereafter  accrue in respect of the
     amount of such  accrued  but  unpaid  dividends)  and  shall  remain a part
     thereof until (but only until) such dividends are paid.

          (iii)  Payment  Dates.  Full  cumulative  dividends  on the  Series  A
Preferred Stock shall be payable semi-annually, on March 31 and September 30, in
each year (each, a "Dividend  Payment Date"). If any Dividend Payment Date shall
be on a day other than a Business Day,  then the Dividend  Payment Date shall be
on the next  succeeding  Business  Day. An amount  equal to the full  cumulative
dividends shall also be payable,  in  satisfaction of such dividend  obligation,
upon  liquidation  as provided  under Section 3 hereof,  and upon  redemption as
provided  under  Section 6 hereof.  The Board of Directors may fix a record date
for the  determination of holders


                                       2


of shares  of Series A  Preferred  Stock  entitled  to  receive  payment  of the
dividends  payable  pursuant to this  Section 2, which  record date shall not be
more than 60 days prior to the Dividend Payment Date.

          (iv)  Amounts  Payable.  The amount of  dividends  payable on Series A
Preferred  Stock on each  Dividend  Payment  Date  shall be the full  cumulative
dividends  which are unpaid  through and including  such Dividend  Payment Date.
Dividends  which are not paid for any reason  whatsoever  on a Dividend  Payment
Date shall cumulate until paid and shall be payable on the next Dividend Payment
Date on which payment can lawfully be made (or upon liquidation or redemption as
provided  herein).  Holders  of shares of Series A  Preferred  Stock  called for
redemption  on a  redemption  date  falling  between  the close of business on a
dividend  payment  record date and the opening of business on the  corresponding
Dividend  Payment Date shall, in lieu of receiving such dividend  payment on the
Dividend  Payment Date fixed therefor,  receive an amount equal to such dividend
payment  (consisting  of  all  accumulated  and  unpaid  dividends  through  the
redemption  date) on the date fixed for  redemption.  If for whatever reason all
payments  have not been made  with  respect  to any share of Series A  Preferred
Stock as required by Section 3 on a  distribution  date or all payments have not
been made with  respect to any share of Series A Preferred  Stock as required by
Section 6 on a  redemption  date (other than  because of a failure by the holder
thereof to tender such shares for payment on such date),  then,  notwithstanding
any other  provision  hereof,  dividends  shall  continue to  accumulate on such
outstanding shares until paid.

          (v) Compliance with Section 2(b).  Notwithstanding any other provision
hereof, any dividend not paid by the Corporation under this Section 2(a) because
of the Corporation's  compliance with Section 2(b) will be deemed paid under the
provision of this Certificate of Amendment.

     (b) Dividends on Common Stock. In the event that (i) the Corporation  shall
at any time or from time to time declare, order, pay or make a dividend or other
distribution  (whether in cash,  securities,  rights to purchase  securities  or
other property) on its Common Stock and (ii) such dividend or other distribution
exceeds on a per share of Common Stock  equivalent basis the amount payable on a
share of Series A  Preferred  Stock on the  Dividend  Payment  Date  immediately
following the  declaration of such dividend or other  distribution on the Common
Stock, the holders of the Series A Preferred Stock shall receive, in lieu of the
dividend  payable  under Section 2(a) on such  Dividend  Payment Date,  from the
Corporation,  with  respect to each share of Series A Preferred  Stock  held,  a
dividend or distribution that is the same dividend or distribution that would be
received  by a holder of the  number of shares of Common  Stock  into which such
share of Series A Preferred  Stock is convertible  pursuant to the provisions of
Section 5 hereof on the record date for such dividend or distribution.  Any such
dividend or distribution shall be declared,  ordered, paid or made on the Series
A Preferred  Stock at the same time such dividend or  distribution  is declared,
ordered, paid or made on the Common Stock.

     (c) Limitation on Dividends,  Repurchases and  Redemptions.  So long as any
shares of Series A Preferred Stock shall be outstanding,  the Corporation  shall
not  declare or pay or set apart for  payment  any  dividends  or make any other
distributions on any Junior Securities,  whether in cash, securities,  rights to
purchase  securities or other property  (other than  dividends or  distributions
payable  in  shares  of the  class  or  series  upon  which  such  dividends  or
distributions  are declared or paid),  nor shall the  Corporation  or any of its
Subsidiaries purchase, redeem or otherwise acquire for any consideration or make
payment on account of the purchase, redemption or other retirement of any Parity
Securities or Junior Securities,  nor shall any monies be paid or made available
for a sinking


                                       3


fund  for  the  purchase  or  redemption  of any  Parity  Securities  or  Junior
Securities,  unless with respect to all of the  foregoing all dividends or other
distributions  to which the holders of Series A Preferred  Stock shall have been
entitled,  pursuant to Sections  2(a) and 2(b)  hereof,  shall have been paid or
declared and a sum of money has been set apart for the full payment thereof.

     (d) Pro Rata  Payments.  In the event that full  dividends  are not paid or
made  available to the holders of all  outstanding  shares of Series A Preferred
Stock and of any Parity  Securities and funds available for payment of dividends
shall be  insufficient to permit payment in full to holders of all such stock of
the full preferential  amounts to which they are then entitled,  then the entire
amount available for payment of dividends shall be distributed ratably among all
such  holders  of Series A  Preferred  Stock  and of any  Parity  Securities  in
proportion  to the full  amount to which they would  otherwise  be  respectively
entitled.

     3. Preference on Liquidation.

     (a) Liquidation  Preference for Series A Preferred Stock. In the event that
the Corporation  shall  liquidate,  dissolve or wind up, whether  voluntarily or
involuntarily,  no distribution shall be made to the holders of shares of Common
Stock or other  Junior  Securities  (and no  monies  shall be set apart for such
purpose) unless prior thereto, the holders of shares of Series A Preferred Stock
shall have  received  an amount per share equal to the greater of (i) the sum of
(x) the Liquidation  Value,  plus (y) all declared but unpaid dividends  thereon
through the date of  distribution,  (ii) ratable  distributions  determined with
respect to the holders of Series A Preferred Stock and Common Stock on the basis
of the number of shares of Common Stock into which such Series A Preferred Stock
could be converted  pursuant to the  provisions of Section 5 hereof  immediately
prior to such  distribution  and (iii) the Payment Amount,  on a per share basis
(the greater of (i), (ii) and (iii) above is herein referred to as the "Series A
Liquidation Preference").

     (b) Pro Rata Payments. If, upon any such liquidation,  dissolution or other
winding up of the  affairs  of the  Corporation,  the assets of the  Corporation
shall be  insufficient to permit the payment in full of the Series A Liquidation
Preference for each share of Series A Preferred  Stock then  outstanding and the
full  liquidating  payments  on all  Parity  Securities,  then the assets of the
Corporation remaining shall be ratably distributed among the holders of Series A
Preferred  Stock and of any Parity  Securities in proportion to the full amounts
to which they would  otherwise be  respectively  entitled if all amounts thereon
were paid in full.

     (c)  Sale  Not a  Liquidation.  Neither  the  voluntary  sale,  conveyance,
exchange  or  transfer  (for  cash,   shares  of  stock,   securities  or  other
consideration)  of all or  substantially  all  the  property  or  assets  of the
Corporation nor the consolidation,  merger or other business  combination of the
Corporation  with or into  one or more  corporations  shall  be  deemed  to be a
liquidation,  dissolution  or  winding-up,  voluntary  or  involuntary,  of  the
Corporation.

     (d) Notice of Liquidation.  Written notice of any liquidation,  dissolution
or winding up of the Corporation, stating the payment date or dates when and the
place or places  where  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 specified therein,  to the holders of
record of the Series D Preferred  Stock at their  respective  addresses as shall
appear on the records of the Corporation.


                                       4


     4. Voting.

     (a) General. In addition to any voting rights provided in the Corporation's
Certificate of  Incorporation or by law, the Series A Preferred Stock shall vote
together  with the Common  Stock as a single class on all actions to be voted on
by the stockholders of the  Corporation.  Each share of Series A Preferred Stock
shall entitle the holder  thereof to such number of votes per share on each such
action as shall equal the number of shares of Common Stock (including  fractions
of a  share)  into  which  each  share  of  Series  A  Preferred  Stock  is then
convertible; provided, however, that each holder of Series A Preferred Stock and
Conversion  Shares (as defined  below in the  definition  of "Fleming  Holders")
hereby irrevocably  constitutes Kevin J. Zugibe and Stephen P. Mandracchia,  and
each of them, as such holder's proxy, with full power of substitution in each of
them,  in the name,  place and stead of such holder,  to vote at all meetings of
the  stockholders  of the  Corporation  (other  than  with  respect  to  matters
requiring a separate class vote of holders of the Series A Preferred Stock) that
number of voting  shares of the  Corporation  of all classes,  including any now
owned or hereafter  acquired shares held by such holder and its  Affiliates,  in
the aggregate,  as shall exceed twenty-nine  percent (29%) of the votes entitled
to be cast by all  stockholders of the Corporation (as contemplated in the first
sentence of this Section 4(a)). Each such proxy is coupled with an interest. The
holders  of  Series  A  Preferred  Stock  shall be  entitled  to  notice  of any
stockholder's meeting in accordance with the By-Laws of the Corporation.

     (b) Board of  Directors.  The  Corporation  shall not,  without the written
consent or affirmative  vote of the holders  representing at least a majority of
the shares of Series A Preferred Stock then outstanding,  given in writing or by
vote at a meeting,  consenting  or voting (as the case may be)  separately  as a
class,  increase  the  maximum  number of  directors  constituting  the Board of
Directors to a number in excess of nine (9).

     (c)  Election of  Directors.  So long as the Fleming  Holders hold at least
thirty-five  percent (35%) of the shares of Series A Preferred Stock  originally
issued on March 30, 1999, the Fleming  Holders (or if no such shares are held by
a Fleming Holder, any transferee of shares of Series A Preferred Stock consented
to by the Corporation  (which consent shall not be  unreasonably  withheld) (the
"Permitted Preferred Transferee)), shall be entitled, but not required, to elect
up to two (2) directors of the Corporation.  So long as the Fleming Holders hold
at least twenty percent (20%), but less than thirty-five  (35%) percent,  of the
shares of Series A Preferred  Stock  originally  issued on March 30,  1999,  the
Fleming  Holders  (or if no such  shares  are  held  by a  Fleming  Holder,  any
Permitted Preferred Transferee"),  shall be entitled, but not required, to elect
one (1) director of the Corporation.  A director elected in accordance with this
Section 4 is referred to as a "Preferred Director".

     Holders  of at least a  majority  of the  outstanding  shares  of  Series A
Preferred  Stock shall exercise their right,  as described  above, to elect each
Preferred  Director by written notice to the  Corporation of the identity of the
person nominated to serve as Preferred Director,  and requesting the Corporation
to call a meeting of the  holders of Series A  Preferred  Stock to act upon such
nomination.   Each  such  nomination   shall  be  subject  to  approval  by  the
Corporation,  such approval not to be unreasonably withheld.  Promptly upon such
request,  the holders of Series A  Preferred  Stock,  consenting  or voting as a
class (as the case may be),  shall be entitled to elect a Preferred  Director at
any meeting (or in a written  consent in lieu  thereof)  held for the purpose of
electing  directors  until such time as  holders  of at least a majority  of the
outstanding  shares of Series A Preferred  Stock shall


                                       5


notify the  Corporation  in writing  that they no longer wish to exercise  their
right to elect a Preferred Director.

     At any  meeting  (or in a written  consent  in lieu  thereof)  held for the
purpose of electing  directors,  (x) the  presence in person or by proxy (or the
written consent) of the holders  representing a majority of the shares of Series
A Preferred Stock then  outstanding  shall constitute a quorum of such class for
the  election of a Preferred  Director;  and (y) the absence of the  presence in
person or by proxy (or written consent) of the holders  representing less than a
majority  of the shares of Common  Stock then  outstanding  shall not affect the
right of a quorum of holders of Series A  Preferred  Stock to elect a  Preferred
Director.  Any  Preferred  Director may be removed with or without cause by, and
shall not be removed  except  by, the  holders  representing  a majority  of the
shares of Series A  Preferred  Stock then  outstanding,  present in person or by
proxy and voting at a meeting  of  stockholders,  or of the  holders of Series A
Preferred  Stock called for that purpose,  or by written  consent  signed by the
holders  representing a majority of the shares of Series A Preferred  Stock then
outstanding.

     A vacancy in the  directorship to be held by a Preferred  Director shall be
filled only by vote or written  consent of the holders of the Series A Preferred
Stock as provided above.  Unless otherwise  required by the laws of the State of
New York, any holder or holders of at least a majority of the outstanding shares
of Series A  Preferred  Stock  shall  have the  right to call a  meeting  of the
holders  of Series A  Preferred  Stock of the  Corporation  for the  purpose  of
electing a Preferred Director and filling vacancies of Preferred Directors.

     5. Conversion. The holders of shares of Series A Preferred Stock shall have
the right to  convert  all or a  portion  of such  shares  into  fully  paid and
nonassessable  shares of Common Stock or any capital  stock or other  securities
into which such  Common  Stock shall have been  changed or any capital  stock or
other securities resulting from a reclassification thereof as follows:

     (a) Right to Convert. Subject to and upon compliance with the provisions of
this  Section 5, a holder of shares of Series A  Preferred  Stock shall have the
right, at the option of such holder,  at any time, to convert any or all of such
shares into the number of fully paid and  nonassessable  shares of Common  Stock
(calculated  as to each  conversion  rounded  down to the  nearest  1/100th of a
share) obtained by dividing (i) the aggregate Liquidation Value of the shares to
be converted, plus all declared but unpaid dividends thereon through the date of
conversion  (unless  the holder of shares of Series A  Preferred  Stock being so
converted  shall have  elected to receive any such  dividends  in respect of the
shares being converted subsequent to conversion),  by (ii) the Conversion Price,
and by  surrender  of such  shares,  such  surrender  to be  made in the  manner
provided in  paragraph  (b) of this Section 5. The Common  Stock  issuable  upon
conversion  of the shares of Series A Preferred  Stock,  when such Common  Stock
shall be issued in accordance  with the terms hereof,  is hereby  declared to be
and shall be duly  authorized,  validly  issued,  fully  paid and  nonassessable
Common Stock held by the holders thereof.

     (b) Mechanics of Conversion.  Each holder of Series A Preferred  Stock that
desires to convert the same into  shares of Common  Stock  shall  surrender  the
certificate or certificates therefor,  duly endorsed, at the principal office of
the  Corporation  or of any transfer  agent for the Series A Preferred  Stock or
Common Stock,  accompanied by written notice to the Corporation that such holder
elects to convert the same and stating  therein the number of shares of Series A
Preferred Stock being converted and whether all declared and unpaid dividends in
respect of such shares shall be included in the calculation set forth in Section
5(a) hereof, and setting forth the name or names


                                       6


in which such holder wishes the certificate or certificates for shares of Common
Stock to be issued if such name or names  shall be  different  from that of such
holder. Thereupon, the Corporation shall issue and deliver at such office on the
fifth  succeeding  Business  Day after  receipt of such  certificate  and notice
(unless such conversion is in connection with an underwritten public offering of
Common Stock, in which event  concurrently  with such conversion) to such holder
or on such holder's  written order,  (i) a certificate or  certificates  for the
number of validly  issued,  fully paid and  nonassessable  full shares of Common
Stock to which such holder is entitled  and (ii) if less than the full number of
shares of Series A Preferred Stock  evidenced by the surrendered  certificate or
certificates being converted, a new certificate or certificates,  of like tenor,
for  the  number  of  shares  evidenced  by  such  surrendered   certificate  or
certificates less the number of shares converted.

     Each conversion shall be deemed to have been effected  immediately prior to
the  close  of  business  on the  date of such  surrender  of the  shares  to be
converted  (except that if such conversion is in connection with an underwritten
public offering of Common Stock,  then such  conversion  shall be deemed to have
been effected upon such  surrender) so that the rights of the holder  thereof as
to the shares being  converted shall cease at such time except for (x) the right
to receive  shares of Common  Stock and (y) if the holder of the shares being so
converted shall have elected to receive dividends subsequent to such conversion,
all accrued and unpaid dividends in accordance herewith, and the person entitled
to receive the shares of Common Stock  issuable  upon such  conversion  shall be
treated for all purposes as the record  holder of such shares of Common Stock at
such time.

     (c) Conditional Conversion.  Notwithstanding any other provision hereof, if
conversion of any shares of Series A Preferred Stock is to be made in connection
with a public offering of Common Stock or any  transaction  described in Section
5(d)(vii) hereof,  the conversion of any shares of Series A Preferred Stock may,
at the election of the holder thereof,  be conditioned  upon the consummation of
the public offering or such transaction, in which case such conversion shall not
be deemed to be  effective  until the  consummation  of such public  offering or
transaction.

     (d)  Adjustment of the  Conversion  Price.  The  Conversion  Price shall be
adjusted from time to time as follows:

          (i) Adjustment for Stock Splits and  Combinations.  If the Corporation
     at any  time  or from  time to time  after  the  Issue  Date,  pays a stock
     dividend  in  shares of its  Common  Stock,  issues  any  convertible  debt
     securities, effects a subdivision of the outstanding Common Stock, combines
     the  outstanding  shares of Common  Stock,  issues by  reclassification  of
     shares of its Common Stock any shares of capital stock of the  Corporation,
     makes a  distribution  of any of its  assets  (other  than  cash  dividends
     payable  out of earnings or  retained  earnings in the  ordinary  course of
     business)  then,  in  each  such  case,  the  Conversion  Price  in  effect
     immediately  prior to such event  shall be  adjusted so that each holder of
     shares of Series A  Preferred  Stock  shall have the right to  convert  its
     shares  of Series A  Preferred  Stock  into the  number of shares of Common
     Stock which it would have owned after the event had such shares of Series A
     Preferred  Stock been  converted  immediately  before the happening of such
     event.  Any adjustment  under this Section  5(d)(i) shall become  effective
     retroactively  immediately  after the record date in the case of a dividend
     and distribution and shall become effective immediately after the effective
     date   in  the   case   of  a   issuance,   subdivision,   combination   or
     reclassification. If the Corporation pays a stock dividend in shares of its
     Common Stock and the holders of the Series A Preferred  Stock received such
     stock dividend


                                       7


     pursuant to Section 2(b) hereof, the Conversion Price shall not be adjusted
     for such stock dividend under this Section 5(d)(i).

          (ii) Issuance of Additional  Shares of Stock. If the Corporation shall
     (except as hereinafter  provided) issue or sell Additional  Shares of Stock
     in exchange for  consideration  in an amount per Additional  Share of Stock
     less than the Conversion Price in effect immediately prior to such issuance
     or sale of Additional  Shares of Stock, then the Conversion Price as to the
     Common  Stock  into  which  the  Series A  Preferred  Stock is  convertible
     immediately  prior to such  adjustment  shall  be  adjusted  to  equal  the
     consideration  paid per Additional  Share of Stock.  The provisions of this
     Section  5(d)(ii)  shall not apply to any issuance of Additional  Shares of
     Common Stock for which an adjustment is provided  under Section  5(d)(i) or
     which are dividends or distributions  received by the holders of the Series
     A Preferred Stock pursuant to Section 2(b) hereof.

          (iii) (A) Issuance of Warrants or Other Rights. If at any time (i) the
     Corporation  shall in any manner  (whether  directly or by  assumption in a
     merger in which the Corporation is the surviving corporation) issue or sell
     any warrants or other rights to  subscribe  for or purchase any  Additional
     Shares of Stock or any Convertible Securities, whether or not the rights to
     exchange  or  convert  thereunder  are  immediately  exercisable,  and  the
     consideration   received  for  such   warrants  or  other  rights  or  such
     Convertible  Securities  shall be less than the Conversion  Price in effect
     immediately  prior to the time of such issue or sale,  then the  Conversion
     Price  shall be  adjusted  as  provided  in  Section  5(d)(ii).  No further
     adjustments of the Conversion  Price shall be made upon the actual issue of
     such Common Stock or of such Convertible Securities,  upon exercise of such
     warrants or other rights or upon the actual issue of such Common Stock upon
     such conversion or exchange of such Convertible Securities.

          (B) Issuance of Convertible Securities. If at any time the Corporation
     shall in any manner (whether directly or by assumption in a merger in which
     the  Corporation  is  the  surviving   corporation)   issue  or  sell,  any
     Convertible Securities, whether or not the rights to convert thereunder are
     immediately   exercisable,   and  the   consideration   received  for  such
     Convertible  Securities  shall be less than the Conversion  Price in effect
     immediately  prior to the time of such issue or sale,  then the  Conversion
     Price shall be adjusted as provided in Section  5(d)(ii).  No adjustment of
     the Conversion Price shall be made under this Section 5(d)(iii)(B) upon the
     issuance of any  Convertible  Securities  which are issued  pursuant to the
     exercise of any warrants or other subscription or purchase rights therefor,
     if any such adjustment shall previously have been made upon the issuance of
     such warrants or other rights pursuant to Section 5(d)(iii)(A).  No further
     adjustments of the Conversion  Price shall be made upon the actual issue of
     such Common Stock upon  conversion of such  Convertible  Securities and, if
     any issue or sale of such  Convertible  Securities is made upon exercise of
     any  warrant  or  other  right to  subscribe  for or to  purchase  any such
     Convertible  Securities for which  adjustments of the Conversion Price have
     been or are to be made  pursuant to other  provisions of this Section 5(d),
     no further  adjustments of the Conversion  Price shall be made by reason of
     such issue or sale.

          (iv) Superseding Adjustments.  If, at any time after any adjustment of
     the Conversion  Price at which the Series A Preferred  Stock is convertible
     shall  have been made  pursuant  to  Section  5(d)(iii)  as a result of any
     issuance of warrants, rights or Convertible Securities,


                                       8


               (A) such  warrants  or  rights,  or the  right of  conversion  or
          exchange in such other Convertible  Securities,  shall expire, and all
          or a portion of such warrants or rights, or the right of conversion or
          exchange  with  respect to all or a portion of such other  Convertible
          Securities, as the case may be, shall not have been exercised, or

               (B) the  consideration  per share for which Additional  Shares of
          Stock are issuable  pursuant to such warrants or rights,  or the terms
          of such other Convertible Securities, shall be increased (to an amount
          greater than that which  triggered the  adjustment  of the  Conversion
          Price  pursuant to Section  5(d)(iii))  solely by virtue of provisions
          therein contained for an automatic  increase in such consideration per
          share upon the occurrence of a specified date or event,

     then such  previous  adjustment  shall be  rescinded  and  annulled and the
     Additional  Shares of Stock which were deemed to have been issued by virtue
     of the computation  made in connection with the adjustment so rescinded and
     annulled  shall no longer  be deemed to have been  issued by virtue of such
     computation. Thereupon, a recomputation shall be made of the effect of such
     warrants or rights or other Convertible Securities on the basis of

               (C)  treating the number of  Additional  Shares of Stock or other
          property,  if any, theretofore actually issued or issuable pursuant to
          the previous exercise of any such warrants or rights or any such right
          of conversion or exchange,  as having been issued on the date or dates
          of any such exercise and for the  consideration  actually received and
          receivable therefor, and

               (D)  treating  any such  warrants  or  rights  or any such  other
          Convertible  Securities  which then remain  outstanding as having been
          granted or issued  immediately  after the time of such increase of the
          consideration  per share for which Additional Shares of Stock or other
          property  are  issuable   under  such  warrants  or  rights  or  other
          Convertible Securities;

     whereupon a new  adjustment of the  Conversion  Price at which the Series A
     Preferred Stock is convertible  shall be made,  which new adjustment  shall
     supersede the previous adjustment so rescinded and annulled.

          (v) Antidilution Adjustments Under Other Securities.  Without limiting
     any  other  rights  available  hereunder  to the  holders  of the  Series A
     Preferred  Stock,  if there is an  antidilution  adjustment  (i)  under any
     Convertible Securities, whether issued prior to or after the Issue Date, or
     (ii) under any rights, options or warrants to purchase Additional Shares of
     Stock,  whether  issued  prior to or after the Issue Date which,  in either
     case, results in a reduction in the exercise or purchase price with respect
     to such  security  or rights or  results  in an  increase  in the number of
     Additional  Shares of Stock  obtainable  under such  Convertible  Security,
     right,  option  or  warrant,  then  an  adjustment  shall  be  made  to the
     Conversion  Price hereunder.  Any such adjustment  pursuant to this Section
     5(d)(v) shall be by whichever of the following  methods  results in a lower
     Conversion  Price:  (A) a reduction  in the  Conversion  Price equal to the
     percentage  reduction  in such  exercise or purchase  price with respect to


                                       9



     such Convertible  Security,  right, option or warrant or (B) a reduction in
     the Conversion  Price which will result in the same percentage  increase in
     the number of shares of Common Stock available  hereunder as the percentage
     increase in the number of Additional  Shares of Stock  available under such
     Convertible  Security,  right, option or warrant. Any such adjustment under
     this  Section  5(d)(v)  shall  only be made if it would  result  in a lower
     Conversion Price than that which would be determined  pursuant to any other
     antidilution  adjustment  otherwise  required  hereunder as a result of the
     event or circumstance  which  triggered the adjustment to such  Convertible
     Security,  right, option or warrant,  and if an adjustment is made pursuant
     to this  Section  5(d)(v),  such other  antidilution  adjustment  otherwise
     required  hereunder  shall  not be  made  as a  result  of  such  event  or
     circumstance.

          (vi) Other  Provisions  Applicable to Adjustments  under this Section.
     The following  provisions shall be applicable to making  adjustments to the
     shares  of  Common  Stock  into  which  the  Series  A  Preferred  Stock is
     convertible and the Conversion  Price at which the Series A Preferred Stock
     is convertible provided for in this Section 5(d):

               (A)  Computation  of  Consideration.   To  the  extent  that  any
          Additional  Shares  of  Stock  or any  Convertible  Securities  or any
          warrants or other rights to subscribe  for or purchase any  Additional
          Shares of Stock or any Convertible Securities shall be issued for cash
          consideration,  the consideration received by the Corporation therefor
          shall be the amount of the cash received by the Corporation  therefor,
          or, if such Additional  Shares of Stock or Convertible  Securities are
          offered by the Corporation for subscription,  the subscription  price,
          or, if such Additional  Shares of Stock or Convertible  Securities are
          sold  to  underwriters  or  dealers  for  public  offering  without  a
          subscription  offering,  the public  offering  price (in any such case
          subtracting  any amounts paid or  receivable  for accrued  interest or
          accrued dividends and any compensation,  discounts or expenses paid or
          incurred  by  the  Corporation  for  and in the  underwriting  of,  or
          otherwise in connection with, the issuance thereof, to the extent such
          amounts  shall exceed in any such case five percent (5%) of the amount
          of cash received, subscription price or public offering price). To the
          extent  that such  issuance  shall be for a  consideration  other than
          cash, then except as herein otherwise expressly  provided,  the amount
          of such  consideration  shall be deemed  to be the fair  value of such
          consideration at the time of such issuance as determined in good faith
          by the Board of Directors of the  Corporation.  In case any Additional
          Shares of Stock or any Convertible Securities or any warrants or other
          rights to subscribe for or purchase such Additional Shares of Stock or
          Convertible  Securities  shall be issued in connection with any merger
          in  which  the  Corporation  issues  any  securities,  the  amount  of
          consideration  therefor  shall  be  deemed  to be the fair  value,  as
          determined in good faith by the Board of Directors of the Corporation,
          of  such  portion  of the  assets  and  business  of the  nonsurviving
          corporation  as  such  Board  in  good  faith  shall  determine  to be
          attributable   to  such  Additional   Shares  of  Stock,   Convertible
          Securities,  warrants  or  other  rights,  as the  case  may  be.  The
          consideration  for any Additional Shares of Stock issuable pursuant to
          any  warrants or other  rights to  subscribe  for or purchase the same
          shall be the  consideration  received by the  Corporation  for issuing
          such  warrants  or  other  rights  plus the  additional  consideration
          payable to the  Corporation  upon  exercise of such  warrants or other
          rights.  The consideration for any Additional Shares of Stock issuable
          pursuant  to the  terms  of any  Convertible  Securities  shall be the
          consideration  received by the  Corporation  for  issuing  warrants or
          other rights to subscribe for or


                                       10



          purchase such Convertible  Securities,  plus the consideration paid or
          payable  to the  Corporation  in respect  of the  subscription  for or
          purchase  of  such   Convertible   Securities,   plus  the  additional
          consideration, if any, payable to the Corporation upon the exercise of
          the right of conversion or exchange in such Convertible Securities. In
          case of the issuance at any time of any Additional  Shares of Stock or
          Convertible  Securities  in payment or  satisfaction  of any dividends
          upon any class of stock other than Common Stock, the Corporation shall
          be  deemed to have  received  for such  Additional  Shares of Stock or
          Convertible  Securities  a  consideration  equal to the amount of such
          dividend so paid or satisfied.

               (B) When Adjustments to Be Made. The adjustments required by this
          Section  5(d)  shall  be  made  whenever  and as  often  as any  event
          requiring an adjustment shall occur, except that any adjustment of the
          Conversion  Price that would  otherwise  be required  may be postponed
          (except in the case of a subdivision  or  combination of shares of the
          Common  Stock,  as  provided  for in Section  5(d)(i))  up to, but not
          beyond,  the date of exercise if such  adjustment  either by itself or
          with other  adjustments  not previously made amount to a change in the
          Conversion  Price of less than $.05.  Any  adjustment  representing  a
          change of less than such minimum amount (except as aforesaid) which is
          postponed   shall  be  carried  forward  and  made  as  soon  as  such
          adjustment,  together with other adjustments  required by this Section
          5(d) and not previously made, would result in a minimum  adjustment or
          on the date of  conversion.  For the  purpose of any  adjustment,  any
          event shall be deemed to have occurred at the close of business on the
          date of its occurrence.

               (C) Fractional  Interests.  In computing  adjustments  under this
          Section 5(d),  fractional interests in the Common Stock shall be taken
          into account to the nearest 1/100th of a share.

               (D) Challenge to Good Faith Determination.  Whenever the Board of
          Directors of the Corporation shall be required to make a determination
          in good faith of the fair value of any item under this  Section  5(d),
          such  determination  may be challenged in good faith by (1) any holder
          of thirty  percent (30%) or more of Series A Preferred  Stock or (2) a
          Designated  Entity, and any dispute shall be resolved by an investment
          banking firm of recognized  national  standing jointly selected by the
          Corporation  and such holder or  Designated  Entity.  The fees of such
          investment  banker shall be borne by such holder or Designated  Entity
          unless the  Corporation's  calculation is determined to be understated
          by five percent (5%) or more.

          (vii) Reorganization,  Reclassification,  Merger or Consolidation.  If
     the Corporation  shall at any time reorganize or reclassify the outstanding
     shares of Common  Stock  (other than a change in par value,  or from no par
     value to par value,  or from par value to no par value, or as a result of a
     subdivision  or  combination)  or  consolidate  with or merge into  another
     corporation (where the Corporation is not the continuing  corporation after
     such merger or  consolidation),  the  holders of Series A  Preferred  Stock
     shall  thereafter  be entitled to receive upon  conversion  of the Series A
     Preferred  Stock in whole or in part, the same kind and number of shares of
     stock and other securities, cash or other property (and upon the same terms
     and with the same rights) as would have been  distributed  to a holder upon
     such  reorganization,  reclassification,  consolidation  or merger had such
     holder  converted its


                                       11


     Series  A  Preferred  Stock  immediately  prior  to  such   reorganization,
     reclassification,   consolidation   or  merger   (subject   to   subsequent
     adjustments  under Section 5(d)  hereof).  The  Conversion  Price upon such
     conversion  shall be the Conversion Price that would otherwise be in effect
     pursuant  to the  terms  hereof.  Notwithstanding  anything  herein  to the
     contrary,   the  Corporation  will  not  effect  any  such  reorganization,
     reclassification,  merger or consolidation unless prior to the consummation
     thereof,  the  corporation  which may be  required  to  deliver  any stock,
     securities  or other assets upon the  conversion  of the Series A Preferred
     Stock shall agree by an instrument in writing to deliver such stock,  cash,
     securities or other assets to the holders of the Series A Preferred  Stock.
     A sale,  transfer or lease of all or substantially all of the assets of the
     Corporation   to  another   person   shall  be  deemed  a   reorganization,
     reclassification, consolidation or merger for the foregoing purposes.

          (viii) Exceptions to Adjustment of Conversion  Price.  Anything herein
     to the  contrary  notwithstanding,  the  Corporation  shall  not  make  any
     adjustment  of the  Conversion  Price in the case of  Additional  Shares of
     Stock.

          (ix) Chief Financial  Officer's  Opinion.  Upon each adjustment of the
     Conversion  Price, and in the event of any change in the rights of a holder
     of Series A  Preferred  Stock by reason of other  events  herein set forth,
     then and in each such case, the Corporation will promptly obtain an opinion
     of the chief  financial  officer of the  Corporation,  stating the adjusted
     Conversion  Price,  or  specifying  the other  shares of the Common  Stock,
     securities or assets and the amount thereof  receivable as a result of such
     change in rights,  and  setting  forth in  reasonable  detail the method of
     calculation  and the facts  upon  which  such  calculation  is  based.  The
     Corporation  will  promptly  mail a copy of such  opinion to the holders of
     Series A Preferred  Stock.  If a holder of thirty  percent (30%) or more of
     Series A  Preferred  Stock  or a  Designated  Entity  disagrees  with  such
     calculation,  the  Corporation  agrees to  obtain  within  forty-five  (45)
     Business  Days  an  opinion  of a  firm  of  independent  certified  public
     accountants selected by the Corporation's Board of Directors and acceptable
     to such holder to review such  calculation  and the opinion of such firm of
     independent  certified public accountants shall be final and binding on the
     parties  and  shall  be  conclusive  evidence  of  the  correctness  of the
     computation  with respect to any such  adjustment of the Conversion  Price.
     The fees of such  accountants  shall be borne by such holder or  Designated
     Entity  unless  the  calculation  of the  chief  financial  officer  of the
     Corporation is determined to be understated by five percent (5%) or more.

          (x) Corporation to Prevent Dilution.  In case at any time or from time
     to time  conditions  arise by reason of  action  taken by the  Corporation,
     which in the good faith  opinion of its Board of Directors or a majority of
     the holders of the Series A Preferred  Stock are not adequately  covered by
     the  provisions  of this  Section  5(d),  and which  might  materially  and
     adversely  affect  the  exercise  rights  of the  holders  of the  Series A
     Preferred  Stock,  the Board of Directors of the Corporation  shall appoint
     such firm of  independent  certified  public  accountants  acceptable  to a
     majority of the holders of the Series A Preferred  Stock,  which shall give
     their opinion upon the adjustment,  if any, on a basis  consistent with the
     standards  established  in the  other  provisions  of  this  Section  5(d),
     necessary with respect to the Conversion Price, so as to preserve,  without
     dilution  (other than as  specifically  contemplated  by the Certificate of
     Incorporation),  the  exercise  rights  of  the  holders  of the  Series  A
     Preferred  Stock.  Upon receipt of such opinion,  the Board of Directors of
     the Corporation shall forthwith make the adjustments described therein.


                                       12



     (e)  No  Impairment.   The  Corporation  will  not,  by  amendment  of  its
Certificate of  Incorporation or through any  reorganization,  recapitalization,
transfer  of  assets,  consolidation,  merger,  dissolution,  issue  or  sale of
securities or any other voluntary action,  avoid or seek to avoid the observance
or performance of any of the terms to be observed or performed  hereunder by the
Corporation,  but will at all times in good faith  assist in the carrying out of
all the  provisions  of Section 5 hereof and in the taking of all such action as
may be necessary or appropriate in order to protect the conversion rights of the
holders of the Series A Preferred Stock against impairment.

     (f) No Fractional Share  Adjustments.  No fractional shares shall be issued
upon  conversion of the Series A Preferred  Stock. If more than one share of the
Series A Preferred Stock is to be converted at one time by the same stockholder,
the number of full shares issuable upon such conversion shall be computed on the
basis of the  aggregate  amount of the  shares to be  converted.  Instead of any
fractional  shares of Common  Stock  which  would  otherwise  be  issuable  upon
conversion of any shares of Series A Preferred Stock, the Corporation will pay a
cash adjustment in respect of such fractional interest in an amount equal to the
same  fraction  of the  Market  Price per share of Common  Stock at the close of
business on the day of conversion  which such shares of Series A Preferred Stock
would be convertible into on such date.

     (g) Shares to be Reserved.  The Corporation  shall at all times reserve and
keep available, out of its authorized and unissued stock, solely for the purpose
of effecting  the  conversion  of the Series A Preferred  Stock,  such number of
shares of Common  Stock as shall from time to time be  sufficient  to effect the
conversion of all of the Series A Preferred Stock from time to time outstanding.
The  Corporation  shall from time to time,  in  accordance  with the laws of the
State of New York,  increase the authorized  number of shares of Common Stock if
at any time the number of shares of authorized  but unissued  Common Stock shall
be  insufficient  to permit the  conversion  in full of the  Series A  Preferred
Stock.

     (h) Taxes and Charges.  The Corporation will pay any and all issue or other
taxes that may be payable in respect of any  issuance  or  delivery of shares of
Common Stock on  conversion  of the Series A Preferred  Stock.  The  Corporation
shall not,  however,  be required to pay any tax which may be payable in respect
of any  transfer  involved in the issuance or delivery of Common Stock in a name
other  than  that of the  Series A  Preferred  Stock,  and no such  issuance  or
delivery shall be made unless and until the Person  requesting such issuance has
paid to the  Corporation  the  amount  of such  tax or has  established,  to the
satisfaction of the Corporation, that such tax has been paid.

     (i) Accrued Dividends.  Upon conversion of any shares of Series A Preferred
Stock,  the holder  thereof  shall be entitled to receive any accrued but unpaid
dividends  in respect of the shares of Series A Preferred  Stock so converted to
the date of such conversion.

     (j) Closing of Books.  The  Corporation  will at no time close its transfer
books  against the transfer of any shares of Series A Preferred  Stock or of any
shares of Common Stock issued or issuable  upon the  conversion of any shares of
Series A  Preferred  Stock  in any  manner  which  interferes  with  the  timely
conversion of such shares of Series A Preferred Stock.


                                       13


     6. Redemption

     (a)  Redemption  Price.  Any  redemption  of the Series A  Preferred  Stock
pursuant to Section 6(b) shall be at a price per share equal to the  Liquidation
Value plus all declared but unpaid dividends thereon through the redemption date
(the  "Mandatory  Redemption  Price").  Any redemption of the Series A Preferred
Stock pursuant to Section 6(d) shall be at a price per share equal to the Series
A  Liquidation  Preference,  except  that,  for purposes of  calculation  of the
redemption  price under this  Section  6(a),  clause (ii) of the  definition  of
Series A  Liquidation  Preference  in Section 3(a) hereof shall  provide for the
amount per share such holders  would have received if such holders had converted
their shares of Series A Preferred Stock into shares of Common Stock immediately
prior to the Fundamental Change (the "Optional Redemption Price"). The Mandatory
Redemption Price shall be paid, at the election of the  Corporation,  in cash or
shares of Common Stock which have been registered under a registration statement
under the Securities Act of 1933, as amended,  which  registration  statement is
effective,  provided,  that, for purposes of calculating the number of shares of
Common  Stock to be received by each  holder of Series A Preferred  Stock,  each
such share of Common Stock shall be valued at 90% of the Market Price.

     (b) Redemption at the Corporation's Option. Subject to Section 6(a) hereof,
the  Corporation  may, it its option,  redeem all, but not less than all, of the
then outstanding shares of Series A Preferred Stock at the Mandatory  Redemption
Price on March 31, 2004.

     (c) Procedures for Redemption at the Corporation's Option. In the event the
Corporation  shall redeem shares of Series A Preferred Stock pursuant to Section
6(b),  the  Corporation  shall give written  notice of such  redemption by first
class  mail,  postage  prepaid,  mailed not less than  thirty (30) nor more than
ninety (90) days prior to the  redemption  date, to each holder of record of the
shares to be redeemed, at such holder's address as the same appears on the stock
records of the  Corporation.  Each such notice shall state:  (i) the  redemption
date;  (ii) the  number of shares of Series A  Preferred  Stock to be  redeemed;
(iii) the Mandatory  Redemption Price or Optional  Redemption Price, as the case
may be; (iv) the place or places  where  certificates  for such shares are to be
surrendered for payment of the Mandatory Redemption Price or Optional Redemption
Price, as the case may be; (v) that payment will be made upon  presentation  and
surrender of such Series A Preferred  Stock;  (vi) the then  current  Conversion
Price;  (vii) that  dividends on the shares to be redeemed shall cease to accrue
following such redemption  date;  (viii) that such  redemption is mandatory,  if
pursuant  to  Section  6(b);  and (ix) that  dividends,  if any,  accrued to and
including  the date  fixed  for  redemption  will be paid as  specified  in such
notice.  Notice having been mailed as aforesaid,  from and after the  redemption
date, unless the Corporation shall be in default in the payment of the Mandatory
Redemption Price or Optional Redemption Price, as the case may be (including any
accrued and unpaid  dividends to (and including) the date fixed for redemption),
(A)  dividends  on the  shares of the  Series A  Preferred  Stock so called  for
redemption  shall  cease to accrue,  (B) such  shares  shall be deemed no longer
outstanding  and (C) all rights of the holders  thereof as  stockholders  of the
Corporation  (except the right to receive  from the  Corporation  (i) any moneys
payable upon redemption without interest thereon and (ii) any shares of Series A
Preferred Stock and Common Stock pursuant to Section 6(a) hereof) shall cease.

     Upon surrender in accordance with such notice of the  certificates  for any
such shares so redeemed  (properly  endorsed or assigned  for  transfer,  if the
Board of Directors shall so require and the notice shall so state),  such shares
shall be redeemed by the  Corporation  at the  applicable  Mandatory  Redemption
Price.


                                       14


     Notwithstanding  the  foregoing,  if notice of  redemption  has been  given
pursuant to this Section 6 and any holder of shares of Series A Preferred  Stock
shall,  prior to the close of business on the third (3rd) Business Day preceding
the redemption date, give written notice to the Corporation  pursuant to Section
5(b) hereof of the conversion of any or all of the shares to be redeemed held by
such holder  (accompanied by a certificate or certificates for such shares, duly
endorsed or assigned to the Corporation),  then the conversion of such shares to
be redeemed shall become effective as provided in Section 5 hereof.

     (d)  Redemption at Option of Holder Upon a Fundamental  Change.  Subject to
Section 6(a) hereof,  if a Fundamental  Change  occurs,  each holder of Series A
Preferred  Stock shall have the right,  at the holder's  option,  to require the
Corporation to repurchase all of such holder's Series A Preferred  Stock, or any
portion thereof, on the date (the "Repurchase Date") selected by the Corporation
that is not less than ten (10) nor more than  twenty  (20) days  after the Final
Surrender Date, at a price per share equal to the Optional Redemption Price. The
Corporation  agrees that it will not  complete  any  Fundamental  Change  unless
proper  provision  has been made to satisfy its  obligations  under this Section
6(d).

     (e)  Notice of  Fundamental  Change.  Within  thirty  (30)  days  after the
occurrence of a Fundamental Change, the Corporation shall mail to all holders of
record of the Series A Preferred Stock a notice in the manner and containing the
information  set out in Section 6(c),  except that, for purposes of this Section
6(e), such notice shall also describe the occurrence of such Fundamental  Change
and the repurchase right arising as a result thereof. To exercise the repurchase
right,  a holder of Series A Preferred  Stock must  surrender,  on or before the
date which is, subject to any contrary  requirements  of applicable  law, thirty
(30) days  after the date of mailing of the  notice  from the  Corporation  (the
"Final Surrender  Date"),  the certificates  representing the Series A Preferred
Stock with  respect to which the right is being  exercised,  duly  endorsed  for
transfer to the Corporation, together with a written notice of election.

     (f)  Election  Irrevocable.  An  election by a holder of Series A Preferred
Stock to have the  Corporation  repurchase  shares of Series A  Preferred  Stock
pursuant to Section  6(d) shall become  irrevocable  at the close of business on
the relevant Repurchase Date.

     7. Shares to be Retired.  Any share of Series A Preferred Stock  converted,
redeemed,  repurchased or otherwise acquired by the Corporation shall be retired
and  cancelled  and  shall  upon  cancellation  be  restored  to the  status  of
authorized but unissued shares of preferred stock,  subject to reissuance by the
Board of Directors as shares of preferred  stock of one or more other series but
not as shares of Series A Preferred Stock.

     8. Preemptive Rights.

     (a) Except (i) for issuances of pro rata dividends to all holders of Common
Stock, (ii) stock issued to employees,  officers or directors in connection with
management options or incentive plans approved by the Board of Directors,  (iii)
stock issued in connection with any merger,  acquisition or business combination
or (iv) stock issued for  consideration  amounting to less than  $500,000 in any
single transaction where the purchase price is not less than the then applicable
Conversion  Price,  provided that the aggregate amount of all such  transactions
shall not exceed  $1,000,000,  the holders of the Series A Preferred  Stock,  in
order to  enable  such  holders  to  maintain


                                       15


their  fully  diluted  percentage  ownership  of  the  Corporation,  shall  have
preemptive  rights,  as  hereinafter  set forth,  to purchase any capital stock,
including  any warrants or securities  convertible  into capital  stock,  of the
Corporation hereafter issued by the Corporation so that a holder of the Series A
Preferred  Stock shall  hereafter be entitled to acquire a percentage of capital
stock which is hereafter  issued equal to the same  percentage of the issued and
outstanding  Common Stock of the  Corporation as is held (directly or obtainable
upon  conversion  of the Series A  Preferred  Stock) by such  holder of Series A
Preferred Stock  immediately  prior to the date on which the capital stock is to
be issued. As used herein,  "issue" (and variations  thereof) includes sales and
transfers by the Corporation of treasury shares.

     (b) The  Corporation  shall,  before issuing any  additional  capital stock
(other than the  exceptions  referred to in Section 8(a)  hereof),  give written
notice thereof to the holders of the Series A Preferred Stock. Such notice shall
specify  what  type of  instrument  the  Corporation  intends  to issue  and the
consideration which the Corporation intends to receive therefor. For a period of
twenty  (20) days  following  receipt by the  holders of the Series A  Preferred
Stock of such  notice,  the  Corporation  shall be  deemed  to have  irrevocably
offered  to sell to the  holders of the Series A  Preferred  Stock a  sufficient
number of shares  of such  capital  stock so that the  holders  of the  Series A
Preferred Stock, if such holders elect to acquire such shares as hereinafter set
forth,  shall be capable of acquiring the same  percentage of such shares as the
percentage  of Common Stock  beneficially  owned  (directly or  obtainable  upon
conversion of the Series A Preferred Stock) by such holders immediately prior to
the proposed issuance.  In the event any such offer is accepted,  in whole or in
part, by the holders of the Series A Preferred Stock, the Corporation shall sell
such shares to holders of the Series A Preferred Stock for the consideration and
on the precise  terms set forth in the  Corporation's  notice  (given  under the
first two sentences of this paragraph). In the event that one or more holders of
the Series A Preferred  Stock  elects not to, or fails to,  exercise  its rights
under this Section 8(b) within the twenty (20) day period,  then the Corporation
may issue the  remaining  shares of capital  stock to third persons but only for
the same  consideration set forth in the  Corporation's  notice (given under the
first two sentences of this  paragraph)  and no later than sixty (60) days after
the expiration of such twenty (20) day period.  The closing for such transaction
shall take place as proposed by the  Corporation  with  respect to the shares of
capital  stock  proposed to be issued,  at which closing the  Corporation  shall
deliver  certificates for the shares of capital stock in the respective names of
the holders of the Series A Preferred Stock against receipt of the consideration
therefor.

     (c)  Notwithstanding  any other provision hereof, (i) the preemptive rights
granted to holders of Series A Preferred Stock by this Section 8 shall terminate
with  respect  to a share of Series A  Preferred  Stock upon the  conversion  or
redemption  of such share of Series A  Preferred  Stock in  accordance  with the
provisions  hereof  and  (ii)  the  holders  of  Series A  Preferred  Stock  and
Conversion Shares shall not increase the fully diluted  percentage  ownership of
the  Corporation  beyond such level as exists  immediately  following  the Issue
Date,  whether by operation of the provisions of Section 2 or 5 hereof,  through
an  open  market  purchase  or  otherwise,  except  where  the  Corporation  (a)
determines to pay dividends in additional  shares of Series A Preferred Stock as
permitted by Section 2(a)(i),  (b) is in financial distress and chooses to issue
securities to such holders,  (c) repurchases  outstanding  shares of its capital
stock or takes other corporate action having a similar effect or (d) pursuant to
Section  5(d),  has issued or sold  Additional  Shares of Stock in exchange  for
consideration  in an  amount  per  Additional  Share  of  Stock  less  than  the
Conversion Price in effect immediately prior to such issuance or sale.


                                       16


     9. Call

     (a) Call at the  Corporation's  Option.  Subject to the other provisions of
this Section 9, on any date after March 30, 2001, the Corporation shall have the
right to  purchase  all (but not less than all)  outstanding  shares of Series A
Preferred Stock (the "Call"), provided,  however, that (i) the Market Price of a
share of Common Stock is equal to, or greater  than,  an amount equal to 250% of
the then applicable  Conversion  Price and (ii) the Common Stock has traded,  on
the  principal  market for the Common  Stock,  with an average  daily  volume in
excess of 20,000  shares for a period of 30  consecutive  days ending on the day
immediately  prior to such date.  Any  purchase of the Series A Preferred  Stock
pursuant  to this  Section  9(a)  shall  be at a price  per  share  of  Series A
Preferred Stock equal to the Mandatory Redemption Price.

     (b)  Procedures for Call at the  Corporation's  Option.  The  Corporation's
right to Call the Series A Preferred  Stock  pursuant  to Section  9(a) shall be
conditioned  upon the Corporation  giving notice (the "Call  Notice"),  by first
class mail,  postage prepaid,  of the exercise of the Call to the holders of the
Series A  Preferred  Stock not less than twenty five (25) days prior to the date
of the exercise of the Call (the "Call Date"). Each Call Notice shall state: (i)
the Call Date; (ii) the Mandatory  Redemption  Price;  (iii) the place or places
where  certificates  for such  shares are to be  surrendered  for payment of the
Mandatory Redemption Price; (iv) that payment will be made upon presentation and
surrender  of such Series A Preferred  Stock;  (v) the then  current  Conversion
Price  and the date on which  the  right to  convert  such  shares  of  Series A
Preferred  Stock will expire;  (vi) that dividends on the shares to be purchased
shall  cease to  accrue  following  such  Call  Date;  (vii)  that  such Call is
mandatory;  and (viii) that dividends, if any, accrued to and including the Call
Date will be paid as  specified  in such  notice.  Notice  having been mailed as
aforesaid,  from and after the Call  Date,  unless the  Corporation  shall be in
default in the payment of the Mandatory  Redemption Price (including any accrued
and unpaid  dividends to (and  including)  the Call Date),  (A) dividends on the
shares of the Series A Preferred  Stock  shall cease to accrue,  (B) such shares
shall be deemed no longer  outstanding and (C) all rights of the holders thereof
as  stockholders  of the  Corporation  (except  the  right to  receive  from the
Corporation  (i) any moneys  payable upon exercise of the Call without  interest
thereon and (ii) any shares of Common Stock  pursuant to Section 5 hereof) shall
cease.

     Upon surrender in accordance with the Call Notice of the  certificates  for
any such shares so purchased (properly endorsed or assigned for transfer, if the
Board of Directors  shall so require and the Call Notice  shall so state),  such
shares  shall  be  purchased  by the  Corporation  at the  applicable  Mandatory
Redemption Price.

     Notwithstanding  the foregoing,  if the Call Notice has been given pursuant
to this  Section 9 and any holder of shares of Series A Preferred  Stock  shall,
prior to the close of business on the twentieth (20th) day after receipt of such
Call Notice,  give written  notice to the  Corporation  pursuant to Section 5(b)
hereof of the  conversion  of any or all of the shares to be  purchased  held by
such holder  (accompanied by a certificate or certificates for such shares, duly
endorsed or assigned to the Corporation), then (i) the conversion of such shares
to be purchased shall become  effective as provided in Section 5 hereof and (ii)
the Corporation's right to Call such shares to be purchased shall terminate.

     10  Definitions.  As used  herein,  the  following  terms  shall  have  the
respective meanings set forth below:


                                       17


          "Additional  Shares of Stock"  means all shares of Common Stock issued
     by the Corporation  after the Issue Date, other than (i) Common Stock to be
     issued upon conversion of the Series A Preferred Stock, (ii) 500,000 shares
     of Common Stock  reserved for issuance under future stock option plans that
     may be approved and (iii)  1,857,664  shares of Common Stock reserved or to
     be  reserved  for  issuance  under stock  options,  stock  option  plans or
     warrants in effect as of the date of the resolution  pursuant to which this
     Certificate of Amendment has been adopted.

          "Affiliate",  when used with respect to any Person,  means (i) if such
     Person is a  corporation,  any  officer or director  thereof  (other than a
     director  elected  pursuant to Section 4 hereof)  and any Person  which is,
     directly or indirectly,  the beneficial  owner (by itself or as part of any
     group) of more than five percent  (5%) of any class of any equity  security
     (within the meaning of the  Securities  Exchange  Act of 1934,  as amended)
     thereof,  and,  if such  beneficial  owner is a  partnership,  any  general
     partner thereof,  or if such beneficial owner is a corporation,  any Person
     controlling,  controlled  by or under common  control with such  beneficial
     owner,  or any  officer  or  director  of such  beneficial  owner or of any
     corporation occupying any such control relationship, (ii) if such Person is
     a partnership,  any general or limited partner thereof, and (iii) any other
     Person which,  directly or  indirectly,  controls or is controlled by or is
     under common  control with such  Person.  For purposes of this  definition,
     "control" (including the correlative terms  "controlling",  "controlled by"
     and "under common control  with"),  with respect to any Person,  shall mean
     possession,  directly  or  indirectly,  of the power to direct or cause the
     direction of the  management and policies of such Person,  whether  through
     the ownership of voting securities or by contract or otherwise.

          "Business Day" means any day other than a Saturday,  Sunday or any day
     on which  banks in the State of New York are  authorized  or  obligated  to
     close.

          "Call" shall have the meaning set forth in Section 9(a).

          "Call Date" shall have the meaning set forth in Section 9(b).

          "Call Notice" shall have the meaning set forth in Section 9(b).

          "Common Stock" means the  Corporation's  Common Stock,  par value $.01
     per share,  and shall also  include  any  common  stock of the  Corporation
     hereafter  authorized and any capital stock of the Corporation of any other
     class hereafter authorized which is not preferred as to dividends or assets
     over any  other  class of  capital  stock of the  Corporation  or which has
     ordinary voting power for the election of directors of the Corporation.

          "Conversion  Price"  means  the  Conversion  Price per share of Common
     Stock into  which the  Series A  Preferred  Stock is  convertible,  as such
     Conversion Price may be adjusted pursuant to Section 5 hereof.  The initial
     Conversion Price will be $2.375.


                                       18


          "Convertible  Securities"  means evidences of indebtedness,  shares of
     preferred  stock  or  other   securities  which  are  convertible  into  or
     exchangeable,  with or without payment of additional  consideration in cash
     or property, for Additional Shares of Stock, either immediately or upon the
     occurrence of a specified date or a specified event,  other than the Series
     A Preferred Stock.

          "Designated Entity" means, in connection with the rights of any Person
     holding less than thirty percent (30%), in the aggregate, of the Shares and
     Conversion  Shares (as such terms are defined  below in the  definition  of
     "Fleming Holders"), (i) as long as any Shares or Conversion Shares are held
     by any  Person  identified  in  clause  (i) or  (ii) of the  definition  of
     "Fleming Holders",  Fleming Capital Management,  320 Park Avenue, New York,
     NY 10022,  Attention:  Robert  L. Burr and (ii) if no Shares or  Conversion
     Shares  are  held  by a  Person  identified  in  clause  (i) or (ii) of the
     definition of "Fleming  Holders",  the entity  designated by the Transferee
     holding the largest number of such shares,  provided,  that such Transferee
     owns thirty  percent  (30%) or more,  in the  aggregate,  of the Shares and
     Conversion  Shares (in which case such  Transferee  shall provide notice to
     the  Corporation  of such  entity).  For so long as no Shares or Conversion
     Shares  are held by any  Person  identified  in  clause  (i) or (ii) of the
     definition of "Fleming Holders" and no Person holds thirty percent (30%) or
     more, in the aggregate, of the Shares and Conversion Shares, there shall be
     no  Designated  Entity.  For  purposes of this  definition  of  "Designated
     Entity," the  calculation of a Person's  percentage  holdings of Conversion
     Shares shall be determined  based upon the number of Shares from which such
     Conversion Shares derived.

          "Final  Surrender  Date"  shall have the  meaning set forth in Section
     6(e).

          "Fleming  Funds" means Fleming US Discovery Fund III, L.P. and Fleming
     US Discovery Offshore Fund III, L.P.

          "Fleming  Holders"  means (i) the Fleming  Funds,  (ii) any Affiliate,
     officer or  employee  of an  Affiliate  or  investment  fund  managed by an
     Affiliate  of the  Fleming  Funds to which the Fleming  Funds may  transfer
     record  and/or  beneficial  ownership  of any shares of Series A  Preferred
     Stock (the  "Shares") or any shares of Common Stock  obtained or obtainable
     upon  conversion  of the Shares  (the  "Conversion  Shares")  and (iii) any
     transferee of Shares or Conversion Shares from a Person named in clause (i)
     or (ii)  hereof  (provided  that such  transferee  is  consented  to by the
     Corporation,  such consent not to be unreasonably  withheld),  other than a
     transferee of Shares or Conversion  Shares sold in either a public offering
     pursuant to a registration  statement  under the Securities Act or pursuant
     to Rule 144 under the Securities Act. The "Conversion Shares" shall include
     any capital  stock or other  securities  into which  Conversion  Shares are
     changed  and any  capital  stock  or  other  securities  resulting  from or
     comprising a  reclassification,  combination or subdivision  of, or a stock
     dividend on, any Conversion Shares.

          "Fundamental Change" means any of the following events:

               (i) the  sale  (or  functional  equivalent  of a sale)  of all or
          substantially all of the assets of the Corporation;


                                       19


               (ii) any event  (A)  which  results  in the  registration  of the
          Corporation's  Common Stock under the Securities Exchange Act of 1934,
          as amended, to be no longer required; (B) requiring the Corporation to
          make a filing under  Section 13(e) of the  Securities  Exchange Act of
          1934, as amended; (C) reducing substantially or eliminating the public
          market for shares of Common Stock of the Corporation; or (D) causing a
          delisting  of the  Corporation's  Common  Stock from the Nasdaq  Stock
          Market,  except  if such  delisting  is a result  of the  transactions
          contemplated  by the Stock  Purchase  Agreements,  in which  event the
          Company  shall use its best  efforts to cause its  Common  Stock to be
          relisted on the NASDAQ Stock Market;

               (iii) any consolidation of the Corporation with, or merger of the
          Corporation into, any other person,  any merger of another person into
          the  Corporation  or any  other  business  combination  involving  the
          Corporation  which results in the holders of the  Corporation's  stock
          immediately  prior to giving effect to such transaction  owning shares
          of capital  stock of the  surviving  corporation  in such  transaction
          representing (x) fifty percent (50%) or less of the total voting power
          of all shares of capital stock of such surviving  corporation entitled
          to vote  generally in the  election of directors or (y) fifty  percent
          (50%)  or  less  of the  total  value  of all  capital  stock  of such
          surviving corporation; or

               (iv) the  commencement  by the  Corporation  of a voluntary  case
          under the Federal  bankruptcy laws or any other applicable  Federal or
          state  bankruptcy,  insolvency  or  similar  law;  the  consent by the
          Corporation to the entry of an order for relief in an involuntary case
          under  such  law  or to the  appointment  of a  receiver,  liquidator,
          assignee, custodian, trustee, sequestrator (or other similar official)
          of the  Corporation or of any  substantial  part of its property;  any
          assignment by the  Corporation  for the benefit of its creditors;  any
          admission by the  Corporation  in writing of its  inability to pay its
          debts generally as they become due; the entry of a decree or order for
          relief in respect of the Corporation by a court having jurisdiction in
          the premises in an involuntary  case under Federal  bankruptcy laws or
          any  other  applicable  Federal  or state  bankruptcy,  insolvency  or
          similar law appointing a receiver,  liquidator,  assignee,  custodian,
          trustee,  sequestrator (or other similar  official) of the Corporation
          or of any substantial part of its property, or ordering the winding up
          or  liquidation  of its affairs,  and on account of any such event the
          Corporation shall liquidate,  dissolve or wind up; or the liquidation,
          dissolution  or  winding  up  of  the  Corporation   under  any  other
          circumstances.

               "Issue Date" means, as to any share of Series A Preferred  Stock,
          the date of original issuance thereof by the Corporation.

               "Junior  Securities" mean the Common Stock and any other class of
          capital stock or series of preferred stock existing on the date hereof
          or  hereafter  created by the  Corporation  which  does not  expressly
          provide  that it ranks  senior  to or pari  passu


                                       20


          with  the   Series  A   Preferred   Stock  as  to   dividends,   other
          distributions, liquidation preference or otherwise.

               "Liquidation  Value"  means  $100 per share  with  respect to the
          Series A Preferred Stock.

               "Mandatory  Redemption Price" shall have the meaning set forth in
          Section 6(a).

               "Market  Price"  means,  as  to  any  security  on  the  date  of
          determination  thereof,  the  average  of the  closing  prices of such
          security's sales on all principal United States  securities  exchanges
          on which such  security may at the time be listed,  or, if there shall
          have been no sales on any such  exchange on any day,  the last trading
          price of such security on such day, or if such there is no such price,
          the average of the bid and asked prices at the end of such day, on the
          Nasdaq Stock Market, in each such case averaged for a period of thirty
          (30) consecutive  calendar days prior to the day when the Market Price
          is being determined.  Notwithstanding  the foregoing,  with respect to
          the issuance of any  security by the  Corporation  in an  underwritten
          public  offering,  the Market  Price  shall be the per share  purchase
          price paid by the  underwriters.  If at any time such  security is not
          listed on any  exchange or the Nasdaq Stock  Market,  the Market Price
          shall  be  deemed  to be  the  fair  value  thereof  determined  by an
          investment banking firm of nationally  recognized standing selected by
          the Board of Directors of the Corporation and acceptable to holders of
          a majority  of the Series A  Preferred  Stock,  as of the most  recent
          practicable  date when the  determination  is to be made,  taking into
          account the value of the  Corporation as a going concern,  and without
          taking into  account  any lack of  liquidity  of such  security or any
          discount for a minority interest.

               "Optional  Redemption  Price" shall have the meaning set forth in
          Section 6(a).

               "Parity  Securities" mean any class of capital stock or series of
          preferred  stock  existing on the date hereof or hereafter  created by
          the  Corporation,  with  the  prior  written  consent  of the  Fleming
          Holders,  which  expressly  provides that it ranks pari passu with the
          Series  A  Preferred  Stock  as  to  dividends,  other  distributions,
          liquidation preference or otherwise.

               "Payment  Amount"  means such amount as is necessary to cause the
          net present value to equal zero as of any date of all Cash Inflows and
          all Cash Outflows (each as defined below) with respect to the Series A
          Preferred Stock being repurchased pursuant to Section 6 or held on the
          date of the  distribution  pursuant  to Section 3, as the case may be,
          when  calculated with an annual  interest rate  (compounded  annually)
          equal to twelve percent (12%). "Cash Inflows" as used herein means all
          cash payments,  including the Payment Amount,  received by the holders
          of the Series A  Preferred  Stock as a dividend or  distribution  with
          respect  to,  or as  consideration  for the  sale  of,  such  Series A
          Preferred   Stock   (whether  such  payments  are  received  from  the


                                       21


          Corporation or any other Person). "Cash Outflows" as used herein means
          the sum of all  cash  payments  made by the  holders  of the  Series A
          Preferred  Stock to the Corporation to acquire such Series A Preferred
          Stock.  (For the  avoidance of doubt,  Cash Inflows and Cash  Outflows
          with  respect  to any Series A  Preferred  Stock not  included  in the
          Series A  Preferred  Stock  being  repurchased  pursuant  to Section 6
          hereof as part of the transaction for which the Payment Amount is then
          being  calculated  shall not be included in the Cash  Inflows and Cash
          Outflows  used to make such  calculation  (for  purposes  of Section 6
          only), and only the Cash Inflows and Cash Outflows with respect to the
          Series A Preferred Stock which are then being repurchased  pursuant to
          Section 6 hereof in the  transaction  for which the Payment  Amount is
          then  being  calculated  shall  be used in the Cash  Inflows  and Cash
          Outflows  used to make such  calculation  (for  purposes  of Section 6
          only).)

               "Permitted Preferred Transferee" shall have the meaning set forth
          in Section 4(c).

               "Person  or  "person"  shall  mean  an  individual,  partnership,
          corporation,   trust,  unincorporated  organization,   joint  venture,
          government  or agency,  political  subdivision  thereof,  or any other
          entity of any kind.

               "Preferred  Director"  or  "Preferred  Directors"  shall have the
          meaning set forth in Section 4(c).

               "Preferred  Liquidation  Value",  with  respect  to any  share of
          Series A Preferred  Stock as of a  particular  date,  means the sum of
          $100 plus an amount equal to any accrued and unpaid  dividends on such
          share of Series A Preferred  Stock added to the Preferred  Liquidation
          Value  of such  share  of  Series A  Preferred  Stock on any  Dividend
          Payment Date pursuant to Section 2(a)(ii)(B) and not thereafter paid.

               "Repurchase  Date"  shall have the  meaning  set forth in Section
          6(d).

               "Securities  Act"  shall  mean the  Securities  Act of  1933,  as
          amended.

               "Series A  Liquidation  Preference"  shall have the  meaning  set
          forth in Section 3(a).

               "Series A  Preferred  Stock"  shall have the meaning set forth in
          the resolution paragraph in the preamble.

               "Stock  Purchase  Agreements"  mean  (i)  each of the  two  Stock
          Purchase  Agreements  dated as March 30, 1999 between the  Corporation
          and the purchaser listed on the signature page of each such Agreement,
          and  (ii)  each of the  two  Stock  Purchase  Agreements  dated  as of
          February 16, 2001 between the Corporation and the purchaser  listed on
          the signature page of each such Agreement,


                                       22


               "Subsidiary",  with respect to any Person, means any corporation,
          association or other entity of which more than 50% of the total voting
          power of shares of stock or other equity interests  (without regard to
          the  occurrence  of  any  contingency)  to  vote  in the  election  of
          directors,  managers or  trustees  thereof is, at the time as of which
          any  determination  is being made,  owned or  controlled,  directly or
          indirectly,  by such  Person  or one or more of its  Subsidiaries,  or
          both. The term "Subsidiary" or "Subsidiaries" when used herein without
          reference to any particular Person, means a Subsidiary or Subsidiaries
          of the Corporation.

               "Transferees"  shall mean any  transferee  (except  for a Fleming
          Holder) of Shares or  Conversion  Shares  (as such  terms are  defined
          within the  definition of "Fleming  Holders")  from a Fleming  Holder.
          Transferees  shall not include a  transferee  of Shares or  Conversion
          Shares sold in either a public  offering  pursuant  to a  registration
          statement  under the  Securities Act or pursuant to Rule 144 under the
          Securities Act.

     11.  Notices.  Except as may otherwise be provided for herein,  all notices
referred to herein  shall be in  writing,  and all  notices  hereunder  shall be
deemed to have been given and received (i) upon receipt, in the case of a notice
of conversion given to the Corporation as contemplated in Section 5(b) hereof or
in the  case of a notice  of  redemption  at the  holder's  option  given to the
Corporation as contemplated in Section 6(d) hereof,  or (ii) in all other cases,
upon the earlier of (x) receipt of such notice,  (y) three  Business  Days after
the mailing of such notice if sent by registered mail (unless  first-class  mail
shall be  specifically  permitted for such notice under the terms hereof) or (z)
the Business Day following sending such notice by overnight courier, in any case
with postage or delivery charges prepaid,  addressed: if to the Corporation,  to
its offices at 275 North  Middletown  Road,  Pearl River,  NY 10965,  Attention:
Stephen  P.  Mandracchia,  or to an  agent  of  the  Corporation  designated  as
permitted  by the  Certificate  of  Incorporation,  or, if to any  holder of the
Series A  Preferred  Stock,  to such holder at the address of such holder of the
Series A Preferred Stock as listed in the stock record books of the Corporation,
or to such other address as the Corporation or holder, as the case may be, shall
have designated by notice similarly given.


                  [remainder of page intentionally left blank]


                                       23


         IN WITNESS  WHEREOF,  we have  hereunto  executed this  Certificate  of
Amendment  and do affirm the  foregoing  as true under the  penalties of perjury
this 16th day of February, 2001.

                             HUDSON TECHNOLOGIES, INC.


                             By: /s/ Kevin J. Zugibe
                                 ----------------------------------
                                 Name:  Kevin J. Zugibe
                                 Title: Chairman and Chief Executive Officer





                              By: /s/ Stephen P. Mandracchia
                                 ----------------------------------
                                  Name:  Stephen P. Mandracchia
                                  Title: Secretary