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                                                                     EXHIBIT 1.2

                         AMENDED AND RESTATED BY-LAWS

                                      OF

                          PROTON ENERGY SYSTEMS, INC.

                           ARTICLE I.- STOCKHOLDERS

     1.   Place of Meetings. All meetings of stockholders shall be held at such
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place within or without the State of Delaware as may be designated from time to
time by the Board of Directors, the Chairman of the Board or the President or,
if not so designated, at the registered office of the corporation.

     2.   Annual Meeting. The annual meeting of stockholders for the election of
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directors and for the transaction of such other business as may properly be
brought before the meeting shall be held on a date to be fixed by the Board of
Directors, the Chairman of the Board or the President (which date shall not be a
legal holiday in the place where the meeting is to be held) at the time and
place to be fixed by the Board of Directors, the Chairman of the Board or the
President and stated in the notice of the meeting. If no annual meeting is held
in accordance with the foregoing provisions, the Board of Directors shall cause
the meeting to be held as soon thereafter as is convenient. If no annual meeting
is held in accordance with the foregoing provisions, a special meeting may be
held in lieu of the annual meeting, and any action taken at that special meeting
shall have the same effect as if it had been taken at the annual meeting, and in
such case all references in these By-Laws to the annual meeting of the
stockholders shall be deemed to refer to such special meeting.

     3.   Special Meetings. Special meetings of stockholders may be called at
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any time only by the Chairman of the Board, the President or the Board of
Directors. Business transacted at any special meeting of stockholders shall be
limited to matters relating to the purpose or purposes stated in the notice of
meeting.

     4.   Notice of Meetings. Except as otherwise provided by law, written
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notice of each meeting of stockholders, whether annual or special, shall be
given not less than 10 nor more than 60 days before the date of the meeting to
each stockholder entitled to vote at such meeting. The notices of all meetings
shall state the place, date and hour of the meeting. The notice of a special
meeting shall state, in addition, the purpose or purposes for which the meeting
is called. If mailed, notice is given when deposited in the United States mail,
postage prepaid, directed to the stockholder at his or her address as it appears
on the records of the corporation.

     5.   Voting List. The officer who has charge of the stock ledger of the
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corporation shall prepare, at least 10 days before every meeting of
stockholders, a complete list of the stockholders entitled to vote at the
meeting, arranged in alphabetical order, and showing the address of each
stockholder and the number of shares registered in the name of each stockholder.
Such list shall be open to the examination of any stockholder, for any purpose
germane to the meeting, during ordinary business hours, for a period of at least
10 days prior to the meeting, at a
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place within the city where the meeting is to be held. The list shall also be
produced and kept at the time and place of the meeting during the whole time of
the meeting, and may be inspected by any stockholder who is present.

     6.   Quorum. Except as otherwise provided by law, the Certificate of
          ------
Incorporation or these By-Laws, the holders of a majority of the shares of the
capital stock of the corporation issued and outstanding and entitled to vote at
the meeting, present in person or represented by proxy, shall constitute a
quorum for the transaction of business.

     7.   Adjournments. Any meeting of stockholders may be adjourned to any
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other time and to any other place at which a meeting of stockholders may be held
under these By-Laws by the stockholders present or represented at the meeting
and entitled to vote, although less than a quorum, or if no stockholder is
present, by an officer entitled to preside at or to act as Secretary of such
meeting. It shall not be necessary to notify any stockholder of any adjournment
of less than 30 days if the time and place of the adjourned meeting are
announced at the meeting at which adjournment is taken, unless after the
adjournment a new record date is fixed for the adjourned meeting. At the
adjourned meeting, the corporation may transact any business which might have
been transacted at the original meeting.

     8.   Voting and Proxies. Each stockholder shall have one vote for each
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share of stock entitled to vote held of record by such stockholder and a
proportionate vote for each fractional share so held, unless otherwise provided
by law, the Certificate of Incorporation or these By-Laws. Each stockholder of
record entitled to vote at a meeting of stockholders may vote in person or may
authorize another person or persons to vote or act for him by proxy executed in
writing (or in such other manner as permitted under Delaware law) by the
stockholder or his or her authorized agent and delivered to the Secretary of the
corporation. No such proxy shall be voted or acted upon after three years from
the date of its execution, unless the proxy expressly provides for a longer
period.

     9.   Action at Meeting. When a quorum is present at any meeting, the
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holders of shares of stock representing a majority of the votes cast on a matter
(or if there are two or more classes of stock entitled to vote as separate
classes, then in the case of each such class, the holders of shares of that
class of stock representing a majority of the votes cast on a matter) shall
decide any matter to be voted upon by the stockholders at such meeting, except
when a different vote is required by express provision of law, the Certificate
of Incorporation or these By-Laws. Any election by stockholders shall be
determined by a plurality of the votes cast by the stockholders entitled to vote
at the election.

     10.  Nomination of Directors. Only persons who are nominated in accordance
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with the following procedures shall be eligible for election as directors
(except for directors elected to fill vacancies, as provided in Article II,
Section 8). Nomination for election to the Board of Directors of the corporation
at a meeting of stockholders may be made (i) by or at the direction of the Board
of Directors or (ii) by any stockholder of the corporation entitled to vote for
the election of directors at such meeting who complies with the notice
procedures set forth in this Section 10.

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     To be timely, a stockholder's notice must be received by the Secretary at
the principal executive offices of the corporation as follows: (a) in the case
of an election of directors at an annual meeting of stockholders, not less than
60 days nor more than 90 days prior to the first anniversary of the preceding
year's annual meeting; provided, however, that (i) in the event that the date of
the annual meeting is advanced by more than 20 days, or delayed by more than 60
days, from such anniversary date, to be timely, a stockholder's notice must be
so received not earlier than the 90th day prior to such annual meeting and not
later than the close of business on the later of (A) the 60th day prior to such
annual meeting and (B) the 10th day following the day on which notice of the
date of such annual meeting was mailed or public disclosure of the date of such
annual meeting was made, whichever first occurs, or (ii) with respect to the
annual meeting of stockholders of the corporation to be held in the year 2001,
to be timely, a stockholder's notice must be so received not earlier than the
90th day prior to such annual meeting and not later than the close of business
on the 10th day following the day on which notice of the date of such annual
meeting was mailed or public disclosure of the date of such annual meeting was
made, whichever first occurs; or (b) in the case of an election of directors at
a special meeting of stockholders, not earlier than the ninetieth day prior to
such special meeting and not later than the close of business on the later of
(A) the sixtieth day prior to such special meeting and (B) the 10th day
following the day on which notice of the date of such special meeting was mailed
or public disclosure of the date of such special meeting was made, whichever
first occurs.

     The stockholder's notice to the Secretary shall set forth (a) as to each
proposed nominee (i) the name, age, business address and, if known, residence
address of each such nominee, (ii) the principal occupation or employment of
each such nominee, (iii) the number of shares of stock of the corporation which
are beneficially owned by each such nominee and (iv) any other information
concerning the nominee that must be disclosed as to nominees in proxy
solicitations pursuant to Regulation 14A under the Securities Exchange Act of
1934, as amended; (b) as to the stockholder giving the notice (i) the name and
address, as they appear on the corporation's books, of such stockholder and (ii)
the class and number of shares of the corporation which are beneficially owned
by such stockholder; and (c) as to the beneficial owner, if any, on whose behalf
the nomination is being made (i) the name and address of such beneficial owner
and (ii) the class and number of shares of the corporation which are
beneficially owned by such person. In addition, to be effective, the
stockholder's notice must be accompanied by the written consent of the proposed
nominee to serve as a director if elected. The corporation may require any
proposed nominee to furnish such other information as may reasonably be required
by the corporation to determine the eligibility of such proposed nominee to
serve as a director of the corporation.

     The chairman of the meeting may, if the facts warrant, determine and
declare to the meeting that a nomination was not made in accordance with the
foregoing procedure, and if he should so determine, he shall so declare to the
meeting and the defective nomination shall be disregarded.

     Nothing in the foregoing provision shall obligate the corporation or the
Board of Directors to include in any proxy statement or other stockholder
communication distributed on behalf of the corporation or the Board of Directors
information with respect to any nominee for directors submitted by a
stockholder.

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     11.  Notice of Business at Annual Meetings. At any annual meeting of the
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stockholders, only such business shall be conducted as shall have been properly
brought before the meeting. To be properly brought before an annual meeting,
business must be (a) specified in the notice of meeting (or any supplement
thereto) given by or at the direction of the Board of Directors, (b) otherwise
brought before the meeting by or at the direction of the Board of Directors or
(c) otherwise properly brought before an annual meeting by a stockholder. For
business to be properly brought before an annual meeting by a stockholder, (i)
if such business relates to the election of directors of the corporation, the
procedures in Section 10 of Article I must be complied with, and (ii) if such
business relates to any other matter, the stockholder must have given timely
notice thereof in writing to the Secretary in accordance with the procedures set
forth in this Section 11.

     To be timely, a stockholder's notice must be received by the Secretary at
the principal executive offices of the corporation not less than 60 days nor
more than 90 days prior to the first anniversary of the preceding year's annual
meeting; provided, however, that (i) in the event that the date of the annual
meeting is advanced by more than 20 days, or delayed by more than 60 days, from
such anniversary date, to be timely, a stockholder's notice must be so received
not earlier than the 90th day prior to such annual meeting and not later than
the close of business on the later of (A) the 60th day prior to such annual
meeting and (B) the 10th day following the day on which notice of the date of
such annual meeting was mailed or public disclosure of the date of such annual
meeting was made, whichever first occurs, or (ii) with respect to the annual
meeting of stockholders of the corporation to be held in the year 2001, to be
timely, a stockholder's notice must be so received not earlier than the 90th day
prior to such annual meeting and not later than the close of business on the
later of (A) the 60th day prior to such annual meeting and (B) the 10th day
following the day on which notice of the date of such annual meeting was mailed
or public disclosure of the date of such annual meeting was made, whichever
first occurs.

     The stockholder's notice to the Secretary shall set forth as to each matter
the stockholder proposes to bring before the annual meeting (a) a brief
description of the business desired to be brought before the annual meeting and
the reasons for conducting such business at the annual meeting, (b) the name and
address, as they appear on the corporation's books, of the stockholder proposing
such business, and the name and address of the beneficial owner, if any, on
whose behalf the proposal is made, (c) the class and number of shares of the
corporation which are beneficially owned by the stockholder and beneficial
owner, if any, and (d) any material interest of the stockholder or such
beneficial owner, if any, in such business. Notwithstanding anything in these
By-Laws to the contrary, no business shall be conducted at any annual meeting of
stockholders except in accordance with the procedures set forth in this Section
11; provided that any stockholder proposal which complies with Rule 14a-8 of the
proxy rules (or any successor provision) promulgated under the Securities
Exchange Act of 1934, as amended, and is to be included in the corporation's
proxy statement for an annual meeting of stockholders shall be deemed to comply
with the requirements of this Section 11.

     The chairman of the meeting shall, if the facts warrant, determine and
declare to the meeting that business was not properly brought before the meeting
in accordance with the provisions of this Section 11, and if he should so
determine, the chairman shall so declare to the meeting that any such business
not properly brought before the meeting shall not be transacted.

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     12.  Action without Meeting. Stockholders may not take any action by
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written consent in lieu of a meeting.

     13.  Conduct of Meetings. The Board of Directors of the corporation may
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adopt by resolution such rules, regulations and procedures for the conduct of
any meeting of stockholders of the corporation as it shall deem appropriate.
Except to the extent inconsistent with such rules, regulations and procedures as
adopted by the Board of Directors, the officer of the corporation presiding at
any meeting of stockholders shall have the right and authority to prescribe such
rules, regulations and procedures and to do all such acts as, in the judgment of
such officer, are appropriate for the proper conduct of the meeting. Such rules,
regulations or procedures, whether adopted by the Board of Directors or
prescribed by the officer of the corporation presiding at the meeting, may
include, without limitation, the following: (i) the establishment of an agenda
or order of business for the meeting; (ii) rules and procedures for maintaining
order at the meeting and the safety of those present; (iii) limitations on
attendance at or participation in the meeting to stockholders of record of the
corporation, their duly authorized and constituted proxies or such other persons
as shall be determined; (iv) restrictions on entry to the meeting after the time
fixed for the commencement thereof; and (v) limitations on the time allotted to
questions or comments by participants. Unless and to the extent determined by
the Board of Directors or the officer of the corporation presiding at the
meeting, meetings of stockholders shall not be required to be held in accordance
with the rules of parliamentary procedure.

     The officer of the corporation presiding at any meeting of stockholders
shall announce at the meeting when the polls for each matter to be voted upon at
the meeting will be closed. If no announcement is made, the polls shall be
deemed to have closed upon the final adjournment of the meeting. After the polls
close, no ballots, proxies or votes or any revocations or changes thereto may be
accepted.

                            ARTICLE II. - DIRECTORS

     1.   General Powers. The business and affairs of the corporation shall be
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managed by or under the direction of a Board of Directors, who may exercise all
of the powers of the corporation except as otherwise provided by law, the
Certificate of Incorporation or these By-Laws. In the event of a vacancy in the
Board of Directors, the remaining directors, except as otherwise provided by
law, may exercise the powers of the full Board until the vacancy is filled.

     2.   Number, Election and Qualification. The number of directors which
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shall constitute the whole Board of Directors shall be determined by resolution
of the Board of Directors, but in no event shall be more than thirteen nor less
than three. The number of directors may be decreased at any time and from time
to time by a majority of the directors then in office, but only to eliminate
vacancies existing by reason of the death, resignation, removal or expiration of
the term of one or more directors. The directors shall be elected at the annual
meeting of stockholders by such stockholders as have the right to vote on such
election. Directors need not be stockholders of the corporation.

     3.   Classes of Directors. The Board of Directors shall be and is divided
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into three classes: Class I, Class II and Class III. No one class shall have
more than one director more than any other class. If a fraction is contained in
the quotient arrived at by dividing the designated

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number of directors by three, then, if such fraction is one-third, the extra
director shall be a member of Class I, and if such fraction is two-thirds, one
of the extra directors shall be a member of Class I and one of the extra
directors shall be a member of Class II, unless otherwise provided from time to
time by resolution adopted by the Board of Directors.

     4.   Terms of Office. Each director shall serve for a term ending on the
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date of the third annual meeting of stockholders following the annual meeting at
which such director was elected; provided, that each initial director in Class I
                                 --------
shall serve for a term ending on the date of the annual meeting of stockholders
in 2001; each initial director in Class II shall serve for a term ending on the
date of the annual meeting of stockholders in 2002, and each initial director in
Class III shall serve for a term ending on the date of the annual meeting of
stockholders in 2003; and provided further, that the term of each director shall
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be subject to the election and qualification of his or her successor and to his
or her earlier death, resignation or removal.

     5.   Allocation of Directors Among Classes in the Event of Increases or
          ------------------------------------------------------------------
Decreases in the Number of Directors. In the event of any increase or decrease
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in the authorized number of directors, (i) each director then serving as such
shall nevertheless continue as a director of the class of which he or she is a
member (subject to Section 4 above) and (ii) the newly created or eliminated
directorships resulting from such increase or decrease shall be apportioned by
the Board of Directors among the three classes of directors so as to ensure that
no one class has more than one director more than any other class.

     6.   Quorum, Action at Meeting. A majority of the directors at any time in
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office shall constitute a quorum for the transaction of business. In the event
one or more of the directors shall be disqualified to vote at any meeting, then
the required quorum shall be reduced by one for each director so disqualified,
provided that in no case shall less than one-third of the number of directors
then in office constitute a quorum. If at any meeting of the Board of Directors
there shall be less than such a quorum, a majority of those present may adjourn
the meeting from time to time. Every act or decision done or made by a majority
of the directors present at a meeting duly held at which a quorum is present
shall be regarded as the act of the Board of Directors unless a greater number
is required by law, by the Certificate of Incorporation or these By-Laws.

     7.   Removal. Directors of the corporation may be removed by the
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stockholders only for cause by the affirmative vote of the holders of at least
seventy-five percent (75%) of the votes which all the stockholders would be
entitled to cast in any annual election of directors or class of directors.

     8.   Vacancies. Any vacancy in the Board of Directors, however occurring,
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including a vacancy resulting from an enlargement of the Board, shall be filled
only by vote of a majority of the directors then in office, although less than a
quorum, or by a sole remaining director. A director elected to fill a vacancy
shall be elected to hold office until the next election of the class for which
such director shall have been chosen, subject to the election and qualification
of his or her successor and to his or her earlier death, resignation or removal.

     9.   Resignation. Any director may resign by delivering his or her written
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resignation to the corporation at its principal office or to the Chairman of the
Board or Secretary. Such

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resignation shall be effective upon receipt unless it is specified to be
effective at some other time or upon the happening of some other event.

     10.  Regular Meetings. Regular meetings of the Board of Directors may be
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held without notice at such time and place, either within or without the State
of Delaware, as shall be determined from time to time by the Board of Directors;
provided that any director who is absent when such a determination is made shall
be given notice of the determination. A regular meeting of the Board of
Directors may be held without notice immediately after and at the same place as
the annual meeting of stockholders.

     11.  Special Meetings. Special meetings of the Board of Directors may be
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held at any time and place, within or without the State of Delaware, designated
in a call by the Chairman of the Board, the President, two or more directors, or
by one director in the event that there is only a single director in office.

     12.  Notice of Special Meetings. Notice of any special meeting of directors
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shall be given to each director by the Secretary or by the officer or one of the
directors calling the meeting. Notice shall be duly given to each director (i)
by giving notice to such director in person or by telephone at least 24 hours in
advance of the meeting, (ii) by sending a telegram, telecopy, telex or
electronic mail, or delivering written notice by hand, to his or her last known
business, home or electronic mail address at least 24 hours in advance of the
meeting, or (iii) by mailing written notice to his or her last known business or
home address at least 72 hours in advance of the meeting. A notice or waiver of
notice of a meeting of the Board of Directors need not specify the purposes of
the meeting.

     13.  Meetings by Telephone Conference Calls. Directors or any members of
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any committee designated by the directors may participate in a meeting of the
Board of Directors or such committee by means of conference telephone or similar
communications equipment by means of which all persons participating in the
meeting can hear each other, and participation by such means shall constitute
presence in person at such meeting.

     14.  Action by Consent. Any action required or permitted to be taken at any
          -----------------
meeting of the Board of Directors or of any committee of the Board of Directors
may be taken without a meeting, if all members of the Board or committee, as the
case may be, consent to the action in writing, and the written consents are
filed with the minutes of proceedings of the Board or committee.

     15.  Committees. The Board of Directors may designate one or more
          ----------
committees, each committee to consist of one or more of the directors of the
corporation. The Board may designate one or more directors as alternate members
of any committee, who may replace any absent or disqualified member at any
meeting of the committee. In the absence or disqualification of a member of a
committee, the member or members of the committee present at any meeting and not
disqualified from voting, whether or not he, she or they constitute a quorum,
may unanimously appoint another member of the Board of Directors to act at the
meeting in the place of any such absent or disqualified member. Any such
committee, to the extent provided in the resolution of the Board of Directors
and subject to the provisions of the General Corporation Law of the State of
Delaware, shall have and may exercise all the powers

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and authority of the Board of Directors in the management of the business and
affairs of the corporation and may authorize the seal of the corporation to be
affixed to all papers which may require it. Each such committee shall keep
minutes and make such reports as the Board of Directors may from time to time
request. Except as the Board of Directors may otherwise determine, any committee
may make rules for the conduct of its business, but unless otherwise provided by
the directors or in such rules, its business shall be conducted as nearly as
possible in the same manner as is provided in these By-Laws for the Board of
Directors.

     16.  Compensation of Directors. Directors may be paid such compensation for
          -------------------------
their services and such reimbursement for expenses of attendance at meetings as
the Board of Directors may from time to time determine. No such payment shall
preclude any director from serving the corporation or any of its parent or
subsidiary corporations in any other capacity and receiving compensation for
such service.

                            ARTICLE III. - OFFICERS

     1.   Enumeration. The officers of the corporation shall consist of a
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President, a Secretary, a Treasurer and such other officers with such other
titles as the Board of Directors shall determine, including a Chairman of the
Board, a Vice Chairman of the Board, and one or more Vice Presidents, Assistant
Treasurers, and Assistant Secretaries. The Board of Directors may appoint such
other officers as it may deem appropriate.

     2.   Election. The President, the Treasurer and the Secretary shall be
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elected annually by the Board of Directors at its first meeting following the
annual meeting of stockholders. Other officers may be appointed by the Board of
Directors at such meeting or at any other meeting.

     3.   Qualification. No officer need be a stockholder. Any two or more
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offices may be held by the same person.

     4.   Tenure. Except as otherwise provided by law, by the Certificate of
          ------
Incorporation or by these By-Laws, each officer shall hold office until his or
her successor is elected and qualified, unless a different term is specified in
the vote choosing or appointing him or her, or until his or her earlier death,
resignation or removal.

     5.   Resignation and Removal. Any officer may resign by delivering his or
          -----------------------
her written resignation to the corporation at its principal office or to the
Chairman of the Board, the President or the Secretary. Such resignation shall be
effective upon receipt unless it is specified to be effective at some other time
or upon the happening of some other event.

     Any officer may be removed at any time, with or without cause, by vote of a
majority of the entire number of directors then in office.

     Except as the Board of Directors may otherwise determine, no officer who
resigns or is removed shall have any right to any compensation as an officer for
any period following his or her resignation or removal, or any right to damages
on account of such removal, whether his or her compensation be by the month or
by the year or otherwise, unless such compensation is expressly provided in a
duly authorized written agreement with the corporation.

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     6.   Vacancies. The Board of Directors may fill any vacancy occurring in
          ---------
any office for any reason and may, in its discretion, leave unfilled for such
period as it may determine any offices other than those of President, Treasurer
and Secretary. Each such successor shall hold office for the unexpired term of
his or her predecessor and until his or her successor is elected and qualified,
or until his earlier death, resignation or removal.

     7.   Chairman of the Board and Vice Chairman of the Board. The Board of
          ----------------------------------------------------
Directors may appoint a Chairman of the Board and may designate the Chairman of
the Board as Chief Executive Officer. If the Board of Directors appoints a
Chairman of the Board, he or she shall perform such duties and possess such
powers as are assigned to him or her by the Board of Directors. Unless otherwise
provided by the Board of Directors, he or she shall preside at all meetings of
the stockholders, and if he or she is a director, at all meetings of the Board
of Directors. If the Board of Directors appoints a Vice Chairman of the Board,
he or she shall, in the absence or disability of the Chairman of the Board,
perform the duties and exercise the powers of the Chairman of the Board and
shall perform such other duties and possess such other powers as may from time
to time be vested in him or her by the Board of Directors. The person designated
as the Chief Executive Officer of the Company shall, subject to the direction of
the Board of Directors, have general charge and supervision of the business of
the corporation.

     8.   President. Unless the Board of Directors has designated the Chairman
          ---------
of the Board or another officer as Chief Executive Officer, the President shall
be the Chief Executive Officer of the corporation. The President shall perform
such other duties and shall have such other powers as the Chief Executive
Officer or the Board of Directors may from time to time prescribe.

     9.   Vice Presidents. Any Vice President shall perform such duties and
          ---------------
possess such powers as the Board of Directors or the Chief Executive Officer may
from time to time prescribe. In the event of the absence, inability or refusal
to act of the Chief Executive Officer, then, in the order determined by the
Board of Directors, the President (if he or she is not the Chief Executive
Officer) and the Vice President (or if there shall be more than one, the Vice
Presidents) shall perform the duties of the Chief Executive Officer and when so
performing shall have all the powers of and be subject to all the restrictions
upon the Chief Executive Officer. The Board of Directors may assign to any Vice
President the title of Executive Vice President, Senior Vice President or any
other title selected by the Board of Directors.

     10.  Secretary and Assistant Secretaries. The Secretary shall perform such
          -----------------------------------
duties and shall have such powers as the Board of Directors or the Chief
Executive Officer may from time to time prescribe. In addition, the Secretary
shall perform such duties and have such powers as are incident to the office of
the secretary, including without limitation the duty and power to give notices
of all meetings of stockholders and special meetings of the Board of Directors,
to attend all meetings of stockholders and the Board of Directors and keep a
record of the proceedings, to maintain a stock ledger and prepare lists of
stockholders and their addresses as required, to be custodian of corporate
records and the corporate seal and to affix and attest to the same on documents.

     Any Assistant Secretary shall perform such duties and possess such powers
as the Board of Directors, the Chief Executive Officer or the Secretary may from
time to time prescribe. In

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the event of the absence, inability or refusal to act of the Secretary, the
Assistant Secretary (or if there shall be more than one, the Assistant
Secretaries in the order determined by the Board of Directors) shall perform the
duties and exercise the powers of the Secretary.

     In the absence of the Secretary or any Assistant Secretary at any meeting
of stockholders or directors, the person presiding at the meeting shall
designate a temporary secretary to keep a record of the meeting.

     11.  Treasurer and Assistant Treasurers. The Treasurer shall perform such
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duties and shall have such powers as may from time to time be assigned to him or
her by the Board of Directors or the Chief Executive Officer. In addition, the
Treasurer shall perform such duties and have such powers as are incident to the
office of treasurer, including without limitation the duty and power to keep and
be responsible for all funds and securities of the corporation, to deposit funds
of the corporation in depositories selected in accordance with these By-Laws, to
disburse such funds as ordered by the Board of Directors, to make proper
accounts of such funds, and to render as required by the Board of Directors
statements of all such transactions and of the financial condition of the
corporation.

     The Assistant Treasurers shall perform such duties and possess such powers
as the Board of Directors, the Chief Executive Officer or the Treasurer may from
time to time prescribe. In the event of the absence, inability or refusal to act
of the Treasurer, the Assistant Treasurer (or if there shall be more than one,
the Assistant Treasurers in the order determined by the Board of Directors)
shall perform the duties and exercise the powers of the Treasurer.

     12.  Salaries. Officers of the corporation shall be entitled to such
          --------
salaries, compensation or reimbursement as shall be fixed or allowed from time
to time by the Board of Directors.

                          ARTICLE IV. - CAPITAL STOCK

     1.   Issuance of Stock. Unless otherwise voted by the stockholders and
          -----------------
subject to the provisions of the Certificate of Incorporation, the whole or any
part of any unissued balance of the authorized capital stock of the corporation
or the whole or any part of any unissued balance of the authorized capital stock
of the corporation held in its treasury may be issued, sold, transferred or
otherwise disposed of by vote of the Board of Directors in such manner, for such
consideration and on such terms as the Board of Directors may determine.

     2.   Certificates of Stock. Every holder of stock of the corporation shall
          ---------------------
be entitled to have a certificate, in such form as may be prescribed by law and
by the Board of Directors, certifying the number and class of shares owned by
him or her in the corporation. Each such certificate shall be signed by, or in
the name of the corporation by, the Chairman or Vice Chairman, if any, of the
Board of Directors, or the President or a Vice President, and the Treasurer or
an Assistant Treasurer, or the Secretary or an Assistant Secretary of the
corporation. Any or all of the signatures on the certificate may be a facsimile.

     Each certificate for shares of stock which are subject to any restriction
on transfer pursuant to the Certificate of Incorporation, the By-Laws,
applicable securities laws or any agreement among any number of stockholders or
among such holders and the corporation shall

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<PAGE>

have conspicuously noted on the face or back of the certificate either the full
text of the restriction or a statement of the existence of such restriction.

     If the corporation shall be authorized to issue more than one class of
stock or more than one series of any class, the powers, designations,
preferences and relative, participating, optional or other special rights of
each class of stock or series thereof and the qualifications, limitations or
restrictions of such preferences and/or rights shall be set forth in full or
summarized on the face or back of each certificate representing shares of such
class or series of stock, provided that in lieu of the foregoing requirements
there may be set forth on the face or back of each certificate representing
shares of such class or series of stock a statement that the corporation will
furnish without charge to each stockholder who so requests a copy of the full
text of the powers, designations, preferences and relative, participating,
optional or other special rights of each class of stock or series thereof and
the qualifications, limitations or restrictions of such preferences and/or
rights.

     3.   Transfers. Except as otherwise established by rules and regulations
          ---------
adopted by the Board of Directors, and subject to applicable law, shares of
stock may be transferred on the books of the corporation by the surrender to the
corporation or its transfer agent of the certificate representing such shares
properly endorsed or accompanied by a written assignment or power of attorney
properly executed, and with such proof of authority or the authenticity of
signature as the corporation or its transfer agent may reasonably require.
Except as may be otherwise required by law, by the Certificate of Incorporation
or by these By-Laws, the corporation shall be entitled to treat the record
holder of stock as shown on its books as the owner of such stock for all
purposes, including the payment of dividends and the right to vote with respect
to such stock, regardless of any transfer, pledge or other disposition of such
stock until the shares have been transferred on the books of the corporation in
accordance with the requirements of these By-Laws.

     4.   Lost, Stolen or Destroyed Certificates. The corporation may issue a
          --------------------------------------
new certificate of stock in place of any previously issued certificate alleged
to have been lost, stolen, or destroyed, upon such terms and conditions as the
Board of Directors may prescribe, including the presentation of reasonable
evidence of such loss, theft or destruction and the giving of such indemnity as
the Board of Directors may require for the protection of the corporation or any
transfer agent or registrar.

     5.   Record Date. The Board of Directors may fix in advance a date as a
          -----------
record date for the determination of the stockholders entitled to notice of or
to vote at any meeting of stockholders, or entitled to receive payment of any
dividend or other distribution or allotment of any rights in respect of any
change, conversion or exchange of stock, or for the purpose of any other lawful
action. Such record date shall not be more than 60 nor less than 10 days before
the date of such meeting, nor more than 60 days prior to any other action to
which such record date relates.

     If no record date is fixed, the record date for determining stockholders
entitled to notice of or to vote at a meeting of stockholders shall be at the
close of business on the day before the day on which notice is given, or, if
notice is waived, at the close of business on the day before the day on which
the meeting is held. The record date for determining stockholders for any other

                                      -11-
<PAGE>

purpose shall be at the close of business on the day on which the Board of
Directors adopts the resolution relating to such purpose.

     A determination of stockholders of record entitled to notice of or to vote
at a meeting of stockholders shall apply to any adjournment of the meeting;
provided, however, that the Board of Directors may fix a new record date for the
adjourned meeting.

                        ARTICLE V. - GENERAL PROVISIONS

     1.   Fiscal Year. Except as from time to time otherwise designated by the
          -----------
Board of Directors, the fiscal year of the corporation shall begin on the first
day of January of each year and end on the last day of December in each year.

     2.   Corporate Seal. The corporate seal shall be in such form as shall be
          --------------
approved by the Board of Directors.

     3.   Waiver of Notice. Whenever any notice whatsoever is required to be
          ----------------
given by law, by the Certificate of Incorporation or by these By-Laws, a waiver
of such notice either in writing signed by the person entitled to such notice or
such person's duly authorized attorney, or by telecopy or any other available
method, whether before, at or after the time stated in such waiver, or the
appearance of such person or persons at such meeting in person or by proxy,
shall be deemed equivalent to such notice.

     4.   Voting of Securities. Except as the directors may otherwise designate,
          --------------------
the Chairman of the Board, the President or the Treasurer may waive notice of,
and act as, or appoint any person or persons to act as, proxy or attorney-in-
fact for this corporation (with or without power of substitution) at any meeting
of stockholders or shareholders of any other corporation or organization, the
securities of which may be held by this corporation.

     5.   Evidence of Authority. A certificate by the Secretary, or an Assistant
Secretary, or a temporary Secretary, as to any action taken by the stockholders,
directors, a committee or any officer or representative of the corporation shall
as to all persons who rely on the certificate in good faith be conclusive
evidence of such action.

     6.   Certificate of Incorporation. All references in these By-Laws to the
          ----------------------------
Certificate of Incorporation shall be deemed to refer to the Amended and
Restated Certificate of Incorporation of the corporation, as amended and in
effect from time to time.

     7.   Transactions with Interested Parties. No contract or transaction
          ------------------------------------
between the corporation and one or more of the directors or officers, or between
the corporation and any other corporation, partnership, association, or other
organization in which one or more of the directors or officers are directors or
officers, or have a financial interest, shall be void or voidable solely for
this reason, or solely because the director or officer is present at or
participates in the meeting of the Board of Directors or a committee of the
Board of Directors which authorizes the contract or transaction or solely
because his or her or their votes are counted for such purpose, if:

          a.   The material facts as to his or her relationship or interest and
          as to the contract or transaction are disclosed or are known to the
          Board of Directors or the

                                      -12-
<PAGE>

          committee, and the Board or committee in good faith authorizes the
          contract or transaction by the affirmative votes of a majority of the
          disinterested directors, even though the disinterested directors be
          less than a quorum;

          b.   The material facts as to his or her relationship or interest and
          as to the contract or transaction are disclosed or are known to the
          stockholders entitled to vote thereon, and the contract or transaction
          is specifically approved in good faith by vote of the stockholders; or

          c.   The contract or transaction is fair as to the corporation as of
          the time it is authorized, approved or ratified, by the Board of
          Directors, a committee of the Board of Directors, or the stockholders.

     Common or interested directors may be counted in determining the presence
of a quorum at a meeting of the Board of Directors or of a committee which
authorizes the contract or transaction.

     8.   Severability. Any determination that any provision of these By-Laws is
          ------------
for any reason inapplicable, illegal or ineffective shall not affect or
invalidate any other provision of these By-Laws.

     9.   Pronouns. All pronouns used in these By-Laws shall be deemed to refer
          --------
to the masculine, feminine or neuter, singular or plural, as the identity of the
person or persons may require.

                            ARTICLE VI.- AMENDMENTS

     These By-Laws may be altered, amended or repealed, in whole or in part, or
new By-Laws may be adopted by the Board of Directors or by the stockholders as
provided in the Certificate of Incorporation.

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