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                                                                     EXHIBIT 4.3

                           SECOND AMENDED AND RESTATED

                             CABOT INDUSTRIAL TRUST

                                     BY-LAWS

                                 MARCH 22, 2002

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                             CABOT INDUSTRIAL TRUST

                           SECOND AMENDED AND RESTATED

                                     BYLAWS

                               ARTICLE 1. OFFICES

     SECTION 1. PRINCIPAL OFFICE. The principal office of Cabot Industrial Trust
(the "Trust") shall be located at such place or places as the Board of Trustees
(the "Board") of the Trust may designate.

     SECTION 2. ADDITIONAL OFFICES. The Trust may have additional offices at
such places as the Board may from time to time determine or the business of the
Trust may require.

                      ARTICLE 2. MEETINGS OF SHAREHOLDERS

     SECTION 1. PLACE. All meetings of shareholders shall be held at the
principal office of the Trust or at such other place within the United States as
shall be stated in the notice of the meeting.

     SECTION 2. ANNUAL MEETING. An annual meeting of shareholders for the
election of Trustees and the transaction of any business within the powers of
the Trust shall be held within a reasonable period (not less than 30 days)
following delivery of the annual report described in Section 4 of Article 4 of
the Declaration of Trust, on such date and at such time as the Board may
prescribe beginning in 1998, but in any event such meeting must be held within
six months after the end of each full fiscal year.

     SECTION 3. SPECIAL MEETINGS. Special meetings of shareholders may be called
by a majority of the Board, a majority of the Independent Trustees (as defined
in Section 1 of Article 5 of the Declaration of Trust) or by any executive
officer of the Trust on such date and at such time as the Board may prescribe.
Special meetings of shareholders shall also be called by the Secretary on such
date and at such time as the Board may prescribe upon the written request of
shareholders holding in the aggregate not less than twenty-five percent of the
outstanding shares of the Trust entitled to vote at such meeting. Such request
shall state the purpose of such meeting and the matters proposed to be acted on
at such meeting and shall include the information requested by clause (B) of
Section 11(a)(ii) of this Article 2. Within three days of the receipt of such
request, the Secretary shall inform such shareholders of the reasonably
estimated cost of preparing and mailing the Notice of Meeting (as defined in
Section 4 below) and, upon payment to the Trust of such costs, the Secretary
shall prepare the Notice of Meeting and give notice to each shareholder entitled
to notice of the meeting. Unless requested by shareholders entitled to cast a
majority of all the votes entitled to be cast at such meeting, a special meeting
need not be called to consider any matter which is substantially the same as a
matter voted on at any meeting of shareholders held during the 12 months
preceding such request.

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     SECTION 4. NOTICE. Not less than ten nor more than 60 days before each
meeting of shareholders, the Secretary shall give to each shareholder of record
entitled to vote at such meeting and to each shareholder not entitled to vote
who is entitled to notice of such meeting written or printed notice (a "Notice
of Meeting") stating the place, date and time of the meeting and, in the case of
a special meeting or as otherwise may be required by statute, the purpose or
purposes for which the meeting is called, either personally or by mail. If
mailed, the Notice of Meeting shall be deemed to be given when deposited in the
United States mail addressed to the shareholder at his or her post office
address as it appears on the records of the Trust, with postage thereon prepaid.

     SECTION 5. SCOPE OF NOTICE. Subject to Section 11(a) of this Article 2, any
business of the Trust may be transacted at an annual meeting of shareholders
without being specifically designated in the Notice of Meeting, except such
business as is required by statute to be stated in such Notice of Meeting. No
business shall be transacted at a special meeting of shareholders except as
specifically designated in the Notice of Meeting, provided that if the Board has
determined that Trustees may or shall be elected at such special meeting as set
forth in such Notice of Meeting, certain shareholder nominations of persons for
election to the Board may be considered, provided the requirements of Section
11(b) of this Article 2 are satisfied.

     SECTION 6. QUORUM. At any meeting of shareholders, the presence in person
or by proxy of a majority of the outstanding shares entitled to vote at such
meeting shall constitute a quorum; but this Section 6 shall not affect any
requirement under any statute or the Declaration of Trust for the vote necessary
for the adoption of any measure. If, however, such quorum shall not be present
at any meeting of shareholders, the shareholders entitled to vote at such
meeting, present in person or by proxy, shall have power to adjourn the meeting
from time to time to a date not more than 120 days after the original record
date without notice other than announcement at the meeting. At such adjourned
meeting at which a quorum shall be present, any business may be transacted which
might have been transacted at the meeting as originally notified.

     SECTION 7. VOTING. A plurality of all the votes cast at a meeting of
shareholders duly called and at which a quorum is present shall be sufficient to
elect a Trustee. Each share entitled to vote may be voted for as many
individuals as there are Trustees to be elected and for whose election the share
is entitled to be voted. There shall be no right of cumulative voting. A
majority of the votes cast at a meeting of shareholders duly called and at which
a quorum is present shall be sufficient to approve any other matter which may
properly come before the meeting, unless more than a majority of the votes cast
is required by statute or by the Declaration of Trust. Unless otherwise provided
in the Declaration of Trust or Articles Supplementary, each outstanding share,
regardless of class, shall be entitled to one vote on each matter submitted to a
vote at a meeting of shareholders.

     SECTION 8. PROXIES. A shareholder may vote the shares owned of record by
him or her, either in person or by proxy executed in writing by the shareholder
or by his or her duly

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authorized attorney in fact. Such proxy shall be filed with the Secretary before
or at the time of the meeting. No proxy shall be valid after 11 months from the
date of its execution, unless otherwise provided in the proxy.

     SECTION 9. VOTING OF SHARES BY CERTAIN HOLDERS. Shares registered in the
name of a corporation, partnership, trust or other entity, if entitled to be
voted, may be voted by the president or a vice president, a general partner or
trustee thereof, as the case may be, or a proxy appointed by any of the
foregoing individuals, unless some other person who has been appointed to vote
such shares pursuant to a bylaw or a resolution of the board of directors of
such corporation or governing body of such other entity presents a certified
copy of such bylaw or resolution, in which case such person may vote such
shares. Any trustee or other fiduciary may vote shares registered in his or her
name as such fiduciary, either in person or by proxy.

     Shares of the Trust directly or indirectly owned by it shall not be voted
at any meeting and shall not be counted in determining the total number of
outstanding shares entitled to be voted at any given time, unless they are held
by it in a fiduciary capacity, in which case they may be voted and shall be
counted in determining the total number of outstanding shares at any given time.

     The Board may adopt by resolution a procedure by which a shareholder may
certify in writing to the Trust that any shares registered in the name of the
shareholder are held for the account of a specified person other than the
shareholder. The resolution shall set forth the class of shareholders who may
make the certification, the purpose for which the certification may be made, the
form of certification and the information to be contained in it; if the
certification is with respect to a record date or closing of the share transfer
books, the time after the record date or closing of the share transfer books
within which the certification must be received by the Trust; and any other
provisions with respect to the procedure which the Board considers necessary or
desirable. On receipt of such certification, the person specified in the
certification shall be regarded as, for the purposes set forth in the
certification, the shareholder of record of the specified shares in place of the
shareholder who makes the certification.

     SECTION 10. INSPECTORS. At any meeting of shareholders, the presiding
officer of the meeting may, and upon the request of any shareholder shall,
appoint one or more persons as inspectors for such meeting. Such inspectors
shall ascertain and report the number of shares represented at the meeting based
on their determination of the validity and effect of proxies, count all votes,
report the results and perform such other acts as are proper to conduct the
election and voting with impartiality and fairness to all the shareholders.

     Each report of an inspector shall be in writing and signed by him or by a
majority of them if there is more than one inspector acting at such meeting. If
there is more than one inspector, the report of a majority shall be the report
of the inspectors. The report of the inspector or inspectors on the number of
shares represented at the meeting and the results of the voting shall be prima
facie evidence thereof.

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     Section 11. Nominations and Shareholder Business.

     (a)  ANNUAL MEETINGS OF SHAREHOLDERS.

          (i) Nominations of persons for election to the Board and the proposal
of business to be considered by the shareholders may be made at an annual
meeting of shareholders (A) pursuant to the Notice of Meeting, (B) by or at the
direction of the Board or (C) by any shareholder of the Trust who was a
shareholder of record at the time of giving the notice provided for in this
Section 11(a), who is entitled to vote at the meeting and who complied with the
notice procedures set forth in this Section 11(a).

          (ii) For nominations or other business to be properly brought before
an annual meeting by a shareholder pursuant to clause (C) of paragraph (i) of
this Section 11(a), the shareholder must have given timely notice thereof in
writing to the Secretary. To be timely, a shareholder's notice shall be
delivered to the Secretary at the principal executive offices of the Trust 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 if the date of the
annual meeting is advanced by more than 30 days or delayed by more than 60 days
from such anniversary date or if the Trust has not previously held an annual
meeting, notice by the shareholder to be timely must be so delivered (x) not
more than 90 days prior to such annual meeting nor less than 60 days prior to
such annual meeting or (y) not later than the close of business on the tenth day
following the day on which public announcement of the date of such meeting is
first made by the Trust. Such shareholder's notice shall set forth (A) as to
each person whom the shareholder proposes to nominate for election or reelection
as a Trustee, all information relating to such person that is required to be
disclosed in solicitations of proxies for election of Trustees, or is otherwise
required, in each case pursuant to Regulation 14A under the Securities Exchange
Act of 1934, as amended (the "Exchange Act") (including such person's written
consent to being named in the proxy statement as a nominee and to serving as a
Trustee if elected), (B) as to any other business that the shareholder proposes
to bring before the meeting, a brief description of the business desired to be
brought before the meeting, the reasons for conducting such business at the
meeting and any material interest in such business of such shareholder and of
the beneficial owner, if any, on whose behalf the proposal is made, and (C) as
to the shareholder giving the notice and the beneficial owner, if any, on whose
behalf the nomination or proposal is made, (1) the name and address of such
shareholder, as they appear on the Trust's books, and of such beneficial owner,
(2) the class and number of shares of the Trust which are owned beneficially and
of record by such shareholder and such beneficial owner and, (3) in the case of
a nomination, (x) a description of all arrangements or understandings between
such shareholder and each proposed nominee and any other person or persons
(including their names) pursuant to which the nomination(s) are to be made by
such shareholder, (y) a representation that such shareholder intends to appear
in person or by proxy at the meeting, if there is a meeting, to nominate the
persons named in its notice and (z) any other information relating to such
shareholder that would be required to be disclosed in a proxy statement or other
filings required to be made in connection with

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solicitations of proxies for election of Trustees pursuant to Section 14 of the
Exchange Act and the rules and regulations promulgated thereunder.

          (iii) Notwithstanding anything in the second sentence of paragraph
(ii) of this Section 11(a) to the contrary, if the number of Trustees to be
elected to the Board is increased and there is no public announcement naming all
of the nominees for Trustee or specifying the size of the increased Board made
by the Trust at least 70 days prior to the first anniversary of the preceding
year's annual meeting, a shareholder's notice required by this Section 11(a)
shall also be considered timely, but only with respect to nominees for any new
positions created by such increase, if it shall be delivered to the Secretary at
the principal executive offices of the Trust not later than the close of
business on the tenth day following the day on which such public announcement is
first made by the Trust.

     (b) SPECIAL MEETINGS OF SHAREHOLDERS. Only such business shall be conducted
at a special meeting of shareholders as shall have been brought before the
meeting pursuant to the Notice of Meeting. Nominations of persons for election
to the Board may be made at a special meeting of shareholders at which Trustees
are to be elected (i) pursuant to the Notice of Meeting, (ii) by or at the
direction of the Board or (iii) provided that the Board has determined that
Trustees shall or may be elected at such special meeting, by any shareholder of
the Trust who was a shareholder of record at the time of giving of the Section
11(b) Notice (as defined below), who is entitled to vote at the meeting and who
complied with the notice procedures set forth in this Section 11(b). If the
Trust calls a special meeting of shareholders for the purpose of electing one or
more Trustees to the Board, any such shareholder may nominate a person or
persons (as the case may be) for election to such position as specified in the
Notice of Meeting, if a shareholder's notice containing the information required
by clauses (A) and (C) of the second sentence of paragraph (ii) of Section 11(a)
(a "Section 11(b) Notice") shall be delivered to the Secretary at the principal
executive offices of the Trust (A) not more than 90 days prior to such meeting
nor less than 60 days prior to such meeting or (B) not later than the close of
business on the tenth day following the day on which public announcement of the
date of the special meeting and of the nominees proposed by the Board to be
elected at such meeting is first made by the Trust.

     (c) GENERAL.

          (i) Only such persons who are nominated in accordance with the
procedures set forth in this Section 11 shall be eligible to serve as Trustees.
Only such business shall be conducted at an annual meeting of shareholders as
shall have been brought before the meeting in accordance with the procedures set
forth in Section 11(a). The presiding officer of the meeting shall have the
power and duty to determine whether a nomination or any business proposed to be
brought before the meeting was made in accordance with the procedures set forth
in this Section 11 and, if any proposed nomination or business is not in
compliance with this Section 11, to declare that such nomination or proposal be
disregarded.

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          (ii) For purposes of this Section 11, "public announcement" shall mean
disclosure by the Trust in a press release by the Trust reported by the Dow
Jones News Service, Associated Press or comparable news service or in a document
publicly filed by the Trust with the Securities and Exchange Commission pursuant
to Section 13, 14 or 15(d) of the Exchange Act.

          (iii) Notwithstanding the foregoing provisions of this Section 11, a
shareholder shall also comply with all applicable requirements of state law and
of the Exchange Act and the rules and regulations thereunder with respect to the
matters set forth in this Section 11. Nothing in this Section 11 shall be deemed
to affect any rights of shareholders to request inclusion of, nor any rights of
the Trust to omit, proposals in the Trust's proxy statement pursuant to Rule
14a-8 under the Exchange Act.

     SECTION 12. INFORMAL ACTION BY SHAREHOLDERS. Any action required or
permitted to be taken at a meeting of the shareholders may be taken without a
meeting, without prior notice and without a formal vote, if a consent in
writing, setting forth such action, is executed by the holders of outstanding
shares having not less than the minimum number of votes that would be necessary
to authorize or take such action at a meeting at which all shares entitled to
vote thereon were present and voted.

     SECTION 13. VOTING BY BALLOT. Voting on any question or in any election may
be vive voce unless the presiding officer shall order or any shareholder shall
demand that voting be by ballot.

                              ARTICLE 3. TRUSTEES

     SECTION 1. GENERAL POWERS. The business and affairs of the Trust shall be
managed under the direction of the Board. The Board shall keep a record of its
acts and proceedings, which shall form a part of the records of the Trust in the
custody of the Secretary.

     SECTION 2. NUMBER, TERM AND QUALIFICATIONS. At any regular meeting or at
any special meeting of the Board called for that purpose, a majority of the
Trustees may establish, increase or decrease the number of Trustees, provided
that the number thereof shall never be less than three nor more than 15, and
provided further that the term of office of a Trustee shall not be affected by
any decrease in the number of Trustees. Each Trustee shall hold office for the
term for which he or she is elected and until his or her successor is elected
and qualifies, subject, however, to prior death, resignation or removal from
office. The initial number of Trustees is seven.

     SECTION 3. ANNUAL AND REGULAR MEETINGS. An annual meeting of the Board
shall be held immediately after and at the same place as the annual meeting of
shareholders, no notice other than this Bylaw being necessary. The Board may
provide, by resolution, the time and place, either within or without the State
of Maryland, for the holding of regular meetings of the Board without other
notice than such resolution.

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     SECTION 4. SPECIAL MEETINGS. Special meetings of the Board may be called by
or at the request of the Chief Executive Officer or the President or by a
majority of the Trustees then in office. The person or persons authorized to
call special meetings of the Board may fix any place, either within or without
the State of Maryland, as the place for holding any special meeting of the Board
called by them.

     SECTION 5. NOTICE. Notice of any special meeting of the Board shall be
given by written notice delivered personally, transmitted by facsimile,
telegraphed or mailed to each Trustee at his or her business or residence
address. Personally delivered, facsimile transmitted or telegraphed notices
shall be given at least two days prior to the meeting. Notice by mail shall be
given at least five days prior to the meeting. If mailed, such notice shall be
deemed to be given when deposited in the United States mail properly addressed,
with postage thereon prepaid. If given by telegram, such notice shall be deemed
to be given when the telegram is delivered to the telegraph company. If given by
facsimile, such notice shall be deemed to be given upon completion of the
transmission and receipt of a completed answer-back indicating receipt. Neither
the business to be transacted at, nor the purpose of, any annual, regular or
special meeting of the Board need be stated in the notice, unless specifically
required by statute or these Bylaws.

     SECTION 6. QUORUM. A majority of the Trustees shall constitute a quorum for
transaction of business at any meeting of the Board, provided that, if less than
a majority of the Trustees are present at any meeting, a majority of the
Trustees present may adjourn the meeting from time to time without further
notice, and provided further that if, pursuant to the Declaration of Trust or
these Bylaws, the vote of a majority of a particular group of Trustees is
required for action, a quorum must also include a majority of such group. The
Trustees present at a meeting which has been duly called and convened may
continue to transact business until adjournment, notwithstanding the withdrawal
of enough Trustees to leave less than a quorum.

     SECTION 7. VOTING. Except as otherwise provided in the Declaration of
Trust, the action of a majority of the Trustees present at a meeting at which a
quorum is present shall be the action of the Board, unless the concurrence of a
greater proportion is required for such action by applicable statute.

     SECTION 8. TELEPHONE MEETINGS. Trustees may participate in a meeting by
means of a conference telephone or similar communications equipment if all
persons participating in the meeting can hear each other at the same time.
Participation in a meeting by these means shall constitute presence in person at
the meeting.

     SECTION 9. INFORMAL ACTION BY TRUSTEES. Any action required or permitted to
be taken at any meeting of the Board may be taken without a meeting, if a
consent in writing to such action is signed by each Trustee and such written
consent is filed with the minutes of proceedings of the Board.

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     SECTION 10. VACANCIES. If for any reason any or all of the Trustees shall
cease to be Trustees, such event shall not affect these Bylaws or the powers of
the remaining Trustees hereunder (even if fewer than three Trustees remain). Any
vacancy (including a vacancy created by an increase in the number of Trustees)
shall be filled, at any regular meeting or at any special meeting of the Board
called for that purpose, by a majority of the Trustees. Any individual so
elected as a Trustee shall hold office until the next annual meeting of
shareholders.

     SECTION 11. REMOVAL. The shareholders may, at any time, remove any Trustee
in the manner provided in the Declaration of Trust.

     SECTION 12. INTERESTED TRUSTEE TRANSACTIONS. Section 2-419 of the Maryland
General Corporation Law shall be available for and apply to any contract or
other transaction between the Trust and any of its Trustees or between the Trust
and any other trust, corporation, firm or other entity in which any of its
Trustees is a trustee or director or has a material financial interest.

                             ARTICLE 4. COMMITTEES

     SECTION 1. EXECUTIVE COMMITTEE. The Board, by resolution adopted by a
majority of the Trustees, may designate two or more Trustees to constitute an
Executive Committee, to serve as such, unless the resolution designating the
Executive Committee is sooner amended or rescinded by the Board , until the next
annual meeting of the Board or until their respective successors are designated.
A majority of the members of the Executive Committee shall be Independent
Trustees (as defined in Section 1 of Article 5 of the Declaration of Trust). The
Board, by resolution adopted by a majority of the Trustees, may also designate
additional Trustees as alternate members of the Executive Committee to serve as
members of the Executive Committee in the place and stead of any regular member
or members who may be unable to attend a meeting or otherwise unavailable to act
as a member of the Executive Committee. In the absence or disqualification of a
member and all alternate members who may serve in the place and stead of such
member, the member or members present at any meeting and not disqualified from
voting, whether or not such member or members constitute a quorum, may
unanimously appoint another Trustee to act at the meeting in the place of any
such absent or disqualified member.

     Except as expressly limited by the laws of the State of Maryland or the
Declaration of Trust, the Executive Committee shall have and may exercise all
the powers and authority of the Board in the management of the business and
affairs of the Trust between the meetings of the Board. The Executive Committee
shall keep a record of its acts and proceedings, which shall form a part of the
records of the Trust in the custody of the Secretary, and all actions of the
Executive Committee shall be reported to the Board at the next meeting of the
Board.

     Meetings of the Executive Committee may be called at any time by the
Chairman (or any Co-Chairman), any Vice Chairman, the Chief Executive Officer,
the President or any two Executive Committee members. No notice of meetings need
be given. A majority of the members of the

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Executive Committee shall constitute a quorum for the transaction of business
and, except as expressly limited by this Section 1, the act of a majority of the
members present at any meeting at which there is a quorum shall be the act of
the Executive Committee. Except as expressly provided in this Section 1, the
Executive Committee shall fix its own rules of procedure.

     SECTION 2. AUDIT COMMITTEE. The Board, by resolution adopted by a majority
of the Trustees, may designate two or more Trustees to constitute an Audit
Committee, to serve as such, unless the resolution designating the Audit
Committee is sooner amended or rescinded by the Board, until the next annual
meeting of the Board or until their respective successors are designated. The
Board, by resolution adopted by a majority of the Trustees, may also designate
additional Trustees as alternate members of the Audit Committee to serve as
members of the Audit Committee in the place and stead of any regular member or
members who may be unable to attend a meeting or otherwise unavailable to act as
a member of the Audit Committee. In the absence or disqualification of a member
and all alternate members who may serve in the place and stead of such member,
the member or members present at any meeting and not disqualified from voting,
whether or not such member or members constitute a quorum, may unanimously
appoint another Trustee to act at the meeting in the place of any such absent or
disqualified member.

     Except as expressly limited by the laws of the State of Maryland or the
Declaration of Trust, the Audit Committee shall have and may exercise all the
powers and authority of the Board to establish auditing procedures for the Trust
and to appoint and oversee the Trust's independent public accountants to the
fullest extent. The Audit Committee shall keep a record of its acts and
proceedings, which shall form a part of the records of the Trust in the custody
of the Secretary, and all actions of the Audit Committee shall be reported to
the Board at the next meeting of the Board.

     Meetings of the Audit Committee may be called at any time by the Chief
Executive Officer or the President or by any two Audit Committee members. Two
days' written or telephonic notice of meetings shall be given. A majority of the
members of the Audit Committee shall constitute a quorum for the transaction of
business and, except as expressly limited by this Section 2, the act of a
majority of the members present at any meeting at which there is a quorum shall
be the act of the Audit Committee. Except as expressly provided in this Section
2, the Audit Committee shall fix its own rules of procedure.

     SECTION 3. EXECUTIVE COMPENSATION COMMITTEE. The Board, by resolution
adopted by a majority of the Trustees, may designate two or more Trustees to
constitute an Executive Compensation Committee, to serve as such, unless the
resolution designating the Executive Compensation Committee is sooner amended or
rescinded by the Board, until the next annual meeting of the Board or until
their respective successors are designated. The Board, by resolution adopted by
a majority of the Trustees, may also designate additional Trustees as alternate
members of the Executive Compensation Committee to serve as members of the
Executive Compensation Committee in the place and stead of any regular member or
members who may be unable to attend a meeting or otherwise unavailable to act as
a member of the Executive Compensation Committee. In the absence or
disqualification of a member and all alternate members

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who may serve in the place and stead of such member, the member or members
present at any meeting and not disqualified from voting, whether or not such
member or members constitute a quorum, may unanimously appoint another Trustee
to act at the meeting in the place of any such absent or disqualified member.
Each member of the Executive Compensation Committee shall be a "non-employee
director" within the meaning of Rule 16b-3(b)(3)(i) promulgated under the
Exchange Act. A majority of the members of the Executive Compensation Committee
shall be Independent Trustees (as defined in Section 1 of Article 5 of the
Declaration of Trust).

     Except as expressly limited by the laws of the State of Maryland or the
Declaration of Trust, the Executive Compensation Committee shall have and may
exercise such powers as the Board may determine and specify by resolution. The
Executive Compensation Committee shall keep a record of its acts and
proceedings, which shall form a part of the records of the Trust in the custody
of the Secretary, and all actions of the Executive Compensation Committee shall
be reported to the Board at the next meeting of the Board.

     Meetings of the Executive Compensation Committee may be called at any time
by the Chief Executive Officer or the President or by any two Executive
Compensation Committee members. Two days' written or telephonic notice of
meetings shall be given. A majority of the members of the Executive Compensation
Committee shall constitute a quorum for the transaction of business and, except
as expressly limited by this Section 3, the act of a majority of the members
present at any meeting at which there is a quorum shall be the act of the
Executive Compensation Committee. Except as expressly provided in this Section
3, the Executive Compensation Committee shall fix its own rules of procedure.

     SECTION 4. OTHER COMMITTEES. The Board, by resolution adopted by a majority
of the Trustees, may designate one or more other committees, each such committee
to consist of two or more Trustees. Except as expressly limited by the laws of
the State of Maryland or the Declaration of Trust, any such committee shall have
and may exercise such powers as the Board may determine and specify in the
resolution designating such committee. The Board, by resolution adopted by a
majority of the Trustees, may also designate one or more additional Trustees as
alternate members of any such committee to replace any absent or disqualified
member at any meeting of the committee, and at any time may change the
membership of any committee or amend or rescind the resolution designating the
committee. In the absence or disqualification of a member or alternate member of
a committee, the member of members present at any meeting and not disqualified
from voting, whether or not such member or members constitute a quorum, may
unanimously appoint another Trustee to act at the meeting in the place of any
such absent or disqualified member, provided that the Trustee so appointed meets
any qualifications stated in the resolution designating the committee. Each
committee shall keep a record of proceedings and report the same to the Board to
such extent and in such form as the Board may require. Unless otherwise provided
in the resolution designating a committee, a majority of all the members of any
such committee may select its chairman, fix its rules of procedure, fix the time
and place of its meetings and specify what notice of meetings, if any, shall be
given.

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     SECTION 5. TELEPHONE MEETINGS. Members of a committee of the Board may
participate in a meeting by means of a conference telephone or similar
communications equipment if all persons participating in the meeting can hear
each other at the same time. Participation in a meeting by these means shall
constitute presence in person at the meeting.

     SECTION 6. INFORMAL ACTION BY COMMITTEES. Any action required or permitted
to be taken at any meeting of a committee of the Board may be taken without a
meeting, if a consent in writing to such action is signed by each member of the
committee and such written consent is filed with the minutes of proceedings of
such committee.

                              ARTICLE 5. OFFICERS

     SECTION 1. GENERAL PROVISIONS. The officers of the Trust may include a
Chairman, a Chief Executive Officer, a President, a Chief Financial Officer, one
or more Vice Presidents, a Secretary, a Treasurer, one or more Assistant
Secretaries and one or more Assistant Treasurers. In addition, the Board may
from time to time appoint such other officers with such powers and duties as
they shall deem proper. The officers of the Trust shall be elected annually by
the Board at the first meeting of the Board held after each annual meeting of
shareholders, except that each of the Chief Executive Officer and the President
may appoint one or more Vice Presidents, Assistant Secretaries and Assistant
Treasurers. If the election of officers shall not be held at such meeting, such
election shall be held as soon thereafter as may be convenient. Each officer
shall hold office until his or her successor is elected and qualifies or until
his or her death, resignation or removal in the manner hereinafter provided. Any
two or more offices except President and Vice President may be held by the same
person. In its discretion, the Board may leave unfilled any office. Election of
an officer or agent shall not of itself create contract rights between the Trust
and such officer or agent.

     SECTION 2. REMOVAL AND RESIGNATION. Any officer or agent of the Trust may
be removed by the Board if in its judgment the best interests of the Trust would
be served thereby, but such removal shall be without prejudice to the contract
rights, if any, of the person so removed. Any officer of the Trust may resign at
any time by giving written notice of his or her resignation to the Board, the
Chief Executive Officer, the President or the Secretary. Any resignation shall
take effect at any time subsequent to the time specified therein or, if the time
when it shall become effective is not specified therein, immediately upon its
receipt. The acceptance of a resignation shall not be necessary to make it
effective unless otherwise stated in the resignation. Such resignation shall be
without prejudice to the contract rights, if any, of the Trust.

     SECTION 3. VACANCIES. A vacancy in any office may be filled by the Board
for the balance of the term.

     SECTION 4. CHAIRMAN. The Chairman shall preside over the meetings of the
Board and of shareholders at which he or she shall be present. The Chairman also
shall perform all duties incident to the office of a chairman of the Board and
such other duties as may be prescribed by the Board from time to time.

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<PAGE>

     SECTION 4A. CHIEF EXECUTIVE OFFICER. The Chief Executive Officer shall have
general responsibility for implementation of the policies of the Trust, as
determined by the Board, and for the management, supervision and control of all
of the business and affairs of the Trust. He or she may execute any deed,
mortgage, bond, contract or other instrument, except in cases where the
execution thereof shall be expressly delegated by the Board or by these Bylaws
to some other officer or agent of the Trust or shall be required by law to be
otherwise executed; and in general shall perform all duties incident to the
office of Chief Executive Officer and such other duties as may be prescribed by
the Board from time to time. In addition, in the absence of the Chairman, the
Chief Executive Officer shall preside over the meetings of the Board and of
shareholders at which he or she shall be present.

     SECTION 5. PRESIDENT. The President shall have general responsibility for
implementation of the policies of the Trust, as determined by the Board and the
Chief Executive Officer. In the absence of the Chief Executive Officer, or if
there is a vacancy in such office, the President shall perform the duties of the
Chief Executive Officer and when so acting shall have all the powers of and be
subject to all the restrictions on the Chief Executive Officer. He or she may
execute any deed, mortgage, bond, contract or other instrument, except in cases
where the execution thereof shall be expressly delegated by the Board or the
Chief Executive Officer or by these Bylaws to some other officer or agent of the
Trust or shall be required by law to be otherwise executed; and in general shall
perform all duties incident to the office of President and such other duties as
may be prescribed by the Board or the Chief Executive Officer from time to time.

     SECTION 6. CHIEF FINANCIAL OFFICER. The Chief Financial Officer shall have
general responsibility for implementation of the policies of the Trust, as
determined by the Board, the Chief Executive Officer or the President, and for
the management, supervision and control of the financial and accounting affairs
of the Trust. In the absence of a designation of a Treasurer by the Board, the
Chief Financial Officer shall be the Treasurer of the Trust. In the absence of
the Chief Executive Officer and the President, or if there are vacancies in such
offices, the Chief Financial Officer shall perform the duties of the Chief
Executive Officer and the President and when so acting shall have all the powers
of and be subject to all the restrictions on the Chief Executive Officer and the
President. He or she may execute any deed, mortgage, bond, contract or other
instrument, except in cases where the execution thereof shall be expressly
delegated by the Board, the Chief Executive Officer or the President or by these
Bylaws to some other officer or agent of the Trust or shall be required by law
to be otherwise executed; and in general shall perform all duties incident to
the office of Chief Financial Officer and such other duties as may be prescribed
by the Board, the Chief Executive Officer or the President from time to time.

     SECTION 7. VICE PRESIDENTS. In the absence of the Chief Executive Officer,
the President and the Chief Financial Officer, or if there are vacancies in such
offices, the Vice President (or if there is more than one Vice President, the
Vice Presidents in the order designated at the time of their election or, in the
absence of any designation, then in the order of their election) shall perform

                                       13

<PAGE>

the duties of the Chief Executive Officer and the President and when so acting
shall have all the powers of and be subject to all the restrictions on the Chief
Executive Officer and the President; and shall perform such other duties as from
time to time may be assigned to him or her or them by the Chief Executive
Officer, the President or the Board. The Board may designate one or more Vice
Presidents as Executive Vice Presidents or as Vice Presidents for particular
areas of responsibility.

     SECTION 8. SECRETARY. The Secretary shall (a) keep the minutes of the
proceedings of the shareholders, the Board and committees of the Board in one or
more books provided for that purpose, (b) see that all notices are duly given in
accordance with the provisions of these Bylaws or as required by law, (c) be
custodian of the records and of the seal of the Trust, (d) keep a register of
the post office address of each shareholder which shall be furnished to the
Secretary by such shareholder, (e) have general charge of the share transfer
books of the Trust and (f) in general perform such other duties as from time to
time may be assigned to him or her by the Chief Executive Officer or the Board.

     SECTION 9. TREASURER. The Treasurer shall have the custody of the funds and
securities of the Trust and shall keep full and accurate accounts of receipts
and disbursements in books belonging to the Trust and shall deposit all moneys
and other valuable effects in the name and to the credit of the Trust in such
depositories as may be designated by the Board. In the absence of a designation
of a Chief Financial Officer by the Board, the Treasurer shall be the Chief
Financial Officer.

     The Treasurer shall disburse the funds of the Trust as may be ordered by
the Board, taking proper vouchers for such disbursements, and shall render to
the Chief Executive Officer, the President and the Board, at the regular
meetings of the Board or whenever it may so require, an account of all his or
her transactions as Treasurer and of the financial condition of the Trust.

     If required by the Board, he or she shall give the Trust a bond in such sum
and with such surety or sureties as shall be satisfactory to the Board for the
faithful performance of the duties of his or her office and for the restoration
to the Trust, in case of his or her death, resignation, retirement or removal
from office, of all books, papers, vouchers, moneys and other property of
whatever kind in his or her possession or under his or her control belonging to
the Trust.

     SECTION 10. ASSISTANT SECRETARIES AND ASSISTANT TREASURERS. The Assistant
Secretaries and Assistant Treasurers, in general, shall perform such duties as
shall be assigned to them by the Secretary or Treasurer, respectively, or by the
Chief Executive Officer, the President or the Board. The Assistant Treasurers
shall, if required by the Board, give bonds for the faithful performance of
their duties in such sums and with such surety or sureties as shall be
satisfactory to the Board.

     SECTION 11. SALARIES. The salaries and other compensation of the officers
shall be fixed from time to time by the Board and no officer shall be prevented
from receiving such salary by reason of the fact that he or she is also a
Trustee.

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<PAGE>

                ARTICLE 6. CONTRACTS, LOANS, CHECKS AND DEPOSITS

     SECTION 1. CONTRACTS. The Chief Executive Officer, the President, the Chief
Financial Officer and each Vice President are each authorized to enter into any
contract and to execute and deliver any instrument in the name of and on behalf
of the Trust, so long as the dollar value of the Trust's obligation or liability
under such contract or instrument does not exceed $100,000. The Board may
authorize any officer or agent to enter into any contract or to execute and
deliver any instrument in the name of and on behalf of the Trust, and such
authority may be general or confined to specific instances. Any agreement, deed,
mortgage, lease or other document executed by one or more of the Trustees or by
an authorized person shall be valid and binding on the Board and on the Trust
when such execution is authorized or ratified by these Bylaws or by action of
the Board.

     SECTION 2. CHECKS AND DRAFTS. All checks, drafts or other orders for the
payment of money, notes or other evidences of indebtedness issued in the name of
the Trust shall be signed by the Chief Financial Officer or such officer or
officers, agent or agents of the Trust designated by the Chief Financial Officer
or in such other manner as shall from time to time be determined by the Board.

     SECTION 3. DEPOSITS. All funds of the Trust not otherwise employed shall be
deposited from time to time to the credit of the Trust in such banks, trust
companies or other depositories as the Chief Executive Officer, the President,
the Chief Financial Officer or the Board may designate.

                               ARTICLE 7. SHARES

     SECTION 1. CERTIFICATES. Each shareholder shall be entitled to a
certificate or certificates which shall represent and certify the number of
shares of each class held by him or her in the Trust. Each certificate shall be
signed by the Chief Executive Officer, the President or any Vice President and
countersigned by the Secretary or an Assistant Secretary or the Treasurer or an
Assistant Treasurer and may be sealed with the seal, if any, of the Trust. The
signatures may be either manual or facsimile. Certificates shall be
consecutively numbered; and if the Trust shall, from time to time, issue several
classes of shares, each class may have its own number series. A certificate is
valid and may be issued whether or not an officer who signed it is still an
officer when it is issued. Each certificate representing shares which are
restricted as to their transferability or voting powers, which are preferred or
limited as to their dividends or distributions or as to their allocable portion
of the assets upon liquidation or which are redeemable at the option of the
Trust, shall have a statement of such restriction, limitation, preference or
redemption provision, or a summary thereof, plainly stated on the certificate.
In lieu of such statement or summary, the Trust may set forth on the face or
back of the certificate a statement that the Trust will furnish to any
shareholder, upon request and without charge, a full statement of such
information.

     SECTION 2. TRANSFERS. Upon surrender to the Trust or the transfer agent of
the

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<PAGE>

Trust of a share certificate duly endorsed or accompanied by proper evidence
of succession, assignment or authority to transfer, the Trust shall issue a new
certificate to the person entitled thereto, cancel the old certificate and
record the transaction on its books.

     The Trust shall be entitled to treat the holder of record of any share as
the holder in fact thereof and, accordingly, shall not be bound to recognize any
equitable or other claim to or interest in such share on the part of any other
person, whether or not it shall have express or other notice thereof, except as
otherwise provided by the laws of the State of Maryland.

     Any issuance, redemption or transfer of, or restriction on, shares which
would operate to disqualify the Trust as a real estate investment trust for
Federal income tax purposes shall be void ab initio.

     Notwithstanding the foregoing, transfers of shares of any class will be
subject in all respects to the Declaration of Trust and all of the terms and
conditions contained therein.

     SECTION 3. LOST CERTIFICATE. The Board or the Secretary (or any other
officer designated by the Board or the Secretary) may direct a new certificate
to be issued in place of any certificate previously issued by the Trust alleged
to have been lost, stolen or destroyed upon the making of an affidavit of that
fact by the person claiming the certificate to be lost, stolen or destroyed.
When authorizing the issuance of a new certificate, the Board or the Secretary
(or any other officer designated by the Board or the Secretary) may, in its
discretion and as a condition precedent to the issuance thereof, require the
owner of such lost, stolen or destroyed certificate or his or her legal
representative to advertise the same in such manner as it or he or she shall
require and/or to give bond, with sufficient surety, to the Trust to indemnify
it against any loss or claim which may arise as a result of the issuance of a
new certificate.

     SECTION 4. CLOSING OF TRANSFER BOOKS OR FIXING OF RECORD DATE. The Board
may set, in advance, a record date for the purpose of determining shareholders
entitled to notice of or to vote at any meeting of shareholders, or shareholders
entitled to receive payment of any dividend or distribution or the allotment of
any other rights, or in order to make a determination of shareholders for any
other proper purpose. Such date, in any case, shall not be prior to the close of
business on the day the record date is fixed and shall be not more than 90 days
and, in the case of a meeting of shareholders, not less than ten days, before
the date on which the meeting or particular action requiring such determination
of shareholders is to be held or taken.

     In lieu of fixing a record date, the Board may provide that the share
transfer books shall be closed for a stated period but not longer than 20 days.
If the share transfer books are closed for the purpose of determining
shareholders entitled to notice of or to vote at a meeting of shareholders, such
books shall be closed for at least ten days before the date of such meeting.

     If no record date is fixed and the share transfer books are not closed for
the determination of shareholders, (a) the record date for the determination of
shareholders entitled to notice of or to vote

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<PAGE>

at a meeting of shareholders shall be at the close of business on the day on
which the Notice of Meeting is given or the 30th day before the meeting,
whichever is the closer date to the meeting, and (b) the record date for the
determination of shareholders entitled to receive payment of a dividend or
distribution or an allotment of any other rights shall be the close of business
on the day on which the resolution of the Board declaring the dividend or
distribution or allotment of rights is adopted.

     When a determination of shareholders entitled to vote at any meeting of
shareholders has been made as provided in this Section 4, such determination
shall apply to any adjournment thereof, except when (a) the determination has
been made through the closing of the transfer books and the stated period of
closing has expired or (b) the meeting is adjourned to a date more than 120 days
after the record date fixed for the original meeting, in either of which cases a
new record date shall be determined as provided above.

     SECTION 5. SHARE LEDGER. The Trust shall maintain at its principal office
or at the office of its counsel, accountants or transfer agent, an original or
duplicate share ledger containing the name and address of each shareholder and
the number of shares of each class held by such shareholder.

     SECTION 6. FRACTIONAL SHARES; ISSUANCE OF UNITS. The Board may issue
fractional shares or provide for the issuance of scrip, all on such items and
under such conditions as they may determine. Notwithstanding any other provision
of the Declaration of Trust or these Bylaws, the Board may issue units
consisting of different securities of the Trust. Any security issued in a unit
shall have the same characteristics as any identical securities issued by the
Trust, except that the Board may provide that for a specified period securities
of the Trust issued in such unit may be transferred on the books of the Trust
only in such unit.

     SECTION 7. CONTROL SHARE ACQUISITION. Until such time as this Section 7
shall be repealed, in whole or in part, or these Bylaws shall be amended to
provide otherwise, in each case in accordance with Article 14 of these Bylaws,
the provisions of Subtitle 7 of Title 3 of the Corporations and Associations
Article of the Annotated Code of Maryland or any successor statute (the "Code")
shall not apply to "control share acquisitions" of the Trust within the meaning
of the Code. The repeal or amendment, in whole or in part, of this Section 7 may
occur at any time, whether before or after an acquisition of control shares and,
upon such repeal or amendment, may, to the extent provided by any successor law,
apply to any control share acquisition occurring prior or subsequent thereto.

                           ARTICLE 8. ACCOUNTING YEAR

     The Board shall have the power, from time to time, to fix the fiscal year
of the Trust by a duly adopted resolution.

                     ARTICLE 9. DIVIDENDS AND DISTRIBUTIONS

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<PAGE>

     SECTION 1. DECLARATION. Dividends and distributions on the shares of the
Trust may be authorized and declared by the Board, subject to the provisions of
law and the Declaration of Trust. Dividends and distributions may be paid in
cash, property or other assets of the Trust or in securities of the Trust or
from any other source as the Board in its discretion shall determine, subject to
the provisions of law and the Declaration of Trust.

     SECTION 2. CONTINGENCIES. Before payment of any dividends or distributions,
there may be set aside out of any funds of the Trust available for dividends and
distributions such sum or sums as the Board may from time to time, in its
absolute discretion, think proper as a reserve fund for contingencies, for
equalizing dividends and distributions, for repairing or maintaining any
property of the Trust or for such other purpose as the Board shall determine to
be in the best interest of the Trust, and the Board may modify or abolish any
such reserve in the manner in which it was created.

                         ARTICLE 10. INVESTMENT POLICY

     Subject to the provisions of law and the Declaration of Trust, the Board
may from time to time adopt, amend, revise or terminate any policy or policies
with respect to investments by the Trust as it shall deem appropriate in its
sole discretion.

                                ARTICLE 11. SEAL

     SECTION 1. SEAL. The Board may authorize the adoption of a seal by the
Trust. The seal shall have inscribed thereon the name of the Trust. The Board
may authorize one or more duplicate seals and provide for the custody thereof.

     SECTION 2. AFFIXING SEAL. Whenever the Trust is required to affix its seal
to a document, it shall be sufficient to meet the requirements of any law, rule
or regulation relating to a seal to place the word "(SEAL)" adjacent to the
signature of the person authorized to execute the document on behalf of the
Trust.

                          ARTICLE 12. INDEMNIFICATION

     To the maximum extent permitted by Maryland law, as amended from time to
time, the Trust shall indemnify and hold harmless, and pay or reimburse
reasonable expenses in advance of final disposition of a proceeding to, each
Trustee and officer from and against all claims and liabilities, whether they
proceed to judgment or are settled, in connection with any threatened, pending
or completed action, suit or proceeding, whether civil, criminal, administrative
or investigative, to which such Trustee or officer may become subject by reason
of his or her being or having been a Trustee or officer, or by reason of any
action alleged to have been taken or omitted by him or her as Trustee or
officer, and shall reimburse him or her for all reasonable legal and other
expenses incurred by him or her in connection with any such claim or liability,
including any claim or liability arising under the provisions of federal or
state securities laws; provided, however, that no Trustee or officer

                                       18

<PAGE>

shall be entitled to indemnification under the foregoing provisions in relation
to any matter if it shall have been established that his or her action or
omission was material to the matter giving rise to the proceeding and was
committed in bad faith or was the result of active and deliberate dishonesty or
the Trustee or officer actually received an improper personal benefit in money,
property or services or, in the case of any criminal proceeding, the Trustee or
officer had reasonable cause to believe that the act or omission was unlawful.
The foregoing indemnification shall include any action alleged to have been
taken or omitted by any such Trustee or officer by reason of serving or having
served at the request of the Trust as a director, trustee, officer, partner,
employee or agent of another foreign or domestic corporation, partnership, joint
venture, trust, employee benefit plan or other enterprise. The Trust, without
requiring a preliminary determination of the ultimate entitlement to
indemnification, shall pay or reimburse reasonable expenses, as such expenses
are incurred by any Trustee or officer in connection with any threatened,
pending or completed action, suit or proceeding, whether civil, criminal,
administrative or investigative, to which such Trustee or officer a Trustee or
officer; provided that if such payment or reimbursement is to be made prior to
the final disposition of any proceeding to which a Trustee or officer is a
party, no payment or reimbursement shall be made by the Trust unless and until
the Trust shall receive a written affirmation from such Trustee or officer of
his or her good faith belief that the standard for indemnification of a Trustee
or officer under Maryland law and as provided above has been met and a written
undertaking by such Trustee or officer to repay such amounts paid or reimbursed
by the Trust if it shall ultimately be determined that such standard for
indemnification has not been met. The rights accruing to a Trustee or officer
under these provisions shall not exclude any other right to which he or she may
be lawfully entitled, nor shall anything herein contained restrict the right of
the Trust to indemnify or reimburse such Trustee or officer in any proper cause
even though not specifically provided for herein.

     Neither the amendment nor repeal of this Article, nor the adoption or
amendment of any other provision of these Bylaws or Declaration of Trust
inconsistent with this Article, shall apply to or affect in any respect the
applicability of the preceding paragraph with respect to any act or failure to
act which occurred prior to such amendment, repeal or adoption.

                          ARTICLE 13. WAIVER OF NOTICE

     Whenever any notice is required to be given pursuant to the Declaration of
Trust or these Bylaws or pursuant to applicable law, a waiver thereof in
writing, signed by the person or persons entitled to such notice, whether before
or after the time stated therein, shall be deemed equivalent to the giving of
such notice. Neither the business to be transacted at nor the purpose of any
meeting need be set forth in the waiver of notice, unless specifically required
by statute. The attendance of any person at any meeting shall constitute a
waiver of notice of such meeting, except if such person attends such meeting for
the express purpose of objecting to the transaction of any business on the
ground that the meeting is not lawfully called or convened.

                        ARTICLE 14. AMENDMENT OF BYLAWS

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<PAGE>

     The Board shall have the exclusive power to adopt, alter or repeal any
provision of these Bylaws and to make new Bylaws. Notwithstanding anything to
the contrary contained herein, after the closing of the Initial Public Offering
(as such term is defined in Section 1 of Article 3 of the Declaration of Trust),
any amendment to Sections 6 or 7 of Article 3 or Sections 1 or 3 of Article 4 or
to this Article 14 shall first be approved by a majority of the Independent
Trustees (as defined in Section 1 of Article 5 of the Declaration of Trust).

                                       20

<PAGE>


                       CERTIFICATE OF ASSISTANT SECRETARY

                                       OF

                             CABOT INDUSTRIAL TRUST

         I, Mary Godlewski, do hereby certify that:

         1. I am the duly elected and acting Assistant Secretary of Cabot
Industrial Trust, a Maryland real estate investment trust (the "Trust").

         2. The foregoing Second Amended and Restated Bylaws were validly
authorized and approved by resolutions of the Board of Directors of the Trust
duly adopted on December 17, 2001 and January 28, 2002, and such resolutions are
in full force and effect on the date hereof and have not been amended, modified
or repealed.

         IN WITNESS THEREOF, I have executed this Certificate as Assistant
Secretary of the Trust this 22nd day of March, 2002.

                                                     /s/ Mary Godlewski
                                                     ------------------
                                                     Mary Godlewski
                                                     Assistant Secretary