HSB GROUP INC
S-4/A, 1997-04-18
FIRE, MARINE & CASUALTY INSURANCE
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AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON APRIL 18, 1997

                                                     REGISTRATION NO. 333-22469

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

   
                                  PRE-EFFECTIVE
                                 AMENDMENT NO. 1
                                       TO
                                    FORM S-4
    

                          REGISTRATION STATEMENT UNDER
                           THE SECURITIES ACT OF 1933

                                 HSB GROUP, INC.
             (Exact name of registrant as specified in its charter)

                                   Connecticut
         (State or other jurisdiction of incorporation or organization)

                                      6133
            (Primary Standard Industrial Classification Code Number)

   
                                   06-1475343
                     (I.R.S. Employer Identification Number)
    

            One State Street, P.O. Box 5024, Hartford, CT 06102-5024
                                 (860) 722-1866
    (Address,  including ZIP Code,  and telephone  number,  including  area
             code, of registrant's principal executive offices)

                       R. Kevin Price, Corporate Secretary
                                 HSB Group, Inc.
            One State Street, P.O. Box 5024, Hartford, CT 06102-5024
                                 (860) 722-1866
       (Name,  address,  including  ZIP Code,  and  telephone  number,
                     including area code, of Agent for Service)

     Approximate  date of commencement of proposed sale of the securities to the
public:  As soon as  practicable  after this  Registration  Statement has become
effective and all other  conditions to the Agreement and Plan of Share Exchange,
described in the enclosed  Prospectus and Proxy Statement  pursuant to which the
common stock and preferred  stock of The Hartford  Steam Boiler  Inspection  and
Insurance Company and HSB Group, Inc. will be exchanged,  have been satisfied or
waived.

     If the  securities  being  registered  on this  Form are being  offered  in
connection  with the formation of a holding company and there is compliance with
General Instruction G, check the following box. / /

               CALCULATION OF REGISTRATION FEE



Title of                 Proposed  Proposed
each class of            maximum   maximum      Amount
securities   Amount      offering  aggregate    of
to be        to be       price     offering     Registration
registered   registered  per unit  price        fee(1)
- ----------   ----------  --------  ---------    ------------


Common Stock,
no par value  20,041,707 $45.625  $914,402,881 $277,092(2)

(1) Estimated  pursuant to Rule 457(f)(1) of the  Securities Act of 1933,  based
upon the average of the high and low sales price per share of The Hartford Steam
Boiler  Inspection  and Insurance  Company  common stock on February 10, 1997 as
reported by the New York Stock Exchange Composite Transactions Reporting System.

   
(2) Registration fee previously paid.
    

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


<PAGE>


[LOGO]

THE HARTFORD STEAM BOILER INSPECTION AND INSURANCE COMPANY

   
May __, 1997
    

Dear Stockholder:

   
     You are cordially  invited to attend a Special  Meeting of  Stockholders on
Monday,  June 23,  1997 at 3:00 P.M.  at our Home  Office  at One State  Street,
Hartford, Connecticut.

        At this  meeting  stockholders  will be asked to consider  and vote on a
proposal to approve an Agreement and Plan of Share  Exchange in connection  with
the formation of a new holding company  structure as described in more detail in
the  attached  Prospectus  and Proxy  Statement.  For the reasons  stated in the
accompanying  materials,  the Board of Directors  believes that the formation of
such a holding company structure is in the best interests of the Company and its
stockholders and recommends a vote "FOR" this proposal.
    

        Your  proxy is very  important  in making up the total  number of shares
necessary  to hold the  meeting,  even  though  you may own  only a few  shares.
Whether or not you plan to attend the meeting,  please fill out, sign and return
your proxy card in the envelope  provided as soon as possible.  Your cooperation
is appreciated.

Sincerely,
/s/ Gordon W. Kreh
Gordon W. Kreh
President and
Chief Executive Officer

The Hartford Steam Boiler
Inspection and Insurance Company
One State Street
P.O. Box 5024
Hartford, Connecticut  06102-5024


<PAGE>


   
                            NOTICE OF SPECIAL MEETING

May __, 1997
    

TO THE STOCKHOLDERS:
- --------------------

   
      Notice is hereby  given  that a Special  Meeting  of  Stockholders  of The
Hartford Steam Boiler  Inspection and Insurance  Company will be held on Monday,
June 23, 1997,  at 3:00 P.M.,  at the office of the Company,  One State  Street,
Hartford,  Connecticut,  to  consider  and act upon a  proposal  to  approve  an
Agreement and Plan of Share Exchange pursuant to which shares of common stock of
a newly formed holding company,  HSB Group, Inc. ("HSB Group") will be exchanged
on a one-for-one  basis for all of the outstanding  common stock of the Company,
shares  of  preferred  stock  of HSB  Group  will  be  exchanged  for all of the
outstanding shares of Series B Convertible  Preferred Stock of the Company,  and
certain other transactions as described herein will be effectuated.
    

        A Prospectus and Proxy Statement to assist you in the  consideration  of
the foregoing matter is attached.

   
        The  Board of  Directors  has  fixed  April  25,  1997,  at the close of
business,  as the record date and time for the determination of the stockholders
entitled to notice of and to vote at said  Special  Meeting and any  adjournment
thereof.

        If the proposal to approve the Agreement  and Plan of Share  Exchange is
adopted, holders of the Company's Common Stock will automatically become holders
of HSB Group,  Inc.'s Common Stock. It will not be necessary for you to exchange
your  present  stock  certificates.  In the future,  as  currently  issued stock
certificates are presented for exchange or transfer,  new  certificates  will be
issued with the name "HSB Group, Inc.".

        As  explained  in more  detail  under  "Dissenters'  Appraisal  Rights",
holders of the Company's Common Stock are entitled to assert appraisal rights in
accordance  with the procedures  set forth in Sections  33-855 through 33-872 of
the  Connecticut  Business  Corporation  Act,  included  with  the  accompanying
Prospectus and Proxy Statement as Appendix B.
    

        It is hoped that you will be able to attend this meeting. If you cannot,
you are urgently  requested  to sign and return the  enclosed  proxy card in the
envelope provided.

                                            By order of the Board of Directors.
                                            /s/ R. K. Price
                                            R. K. PRICE
                                            Corporate Secretary



<PAGE>







           THE HARTFORD STEAM BOILER INSPECTION AND INSURANCE COMPANY
                                 HSB GROUP, INC.
                       ------------------------------
                        PROSPECTUS AND PROXY STATEMENT
                        ------------------------------

   
         This  Prospectus and Proxy  Statement is being  furnished in connection
with the solicitation of proxies by the Board of Directors of The Hartford Steam
Boiler  Inspection  and  Insurance  Company  ("Hartford  Steam  Boiler"  or  the
"Company")  for a Special  Meeting  of  Stockholders  of the  Company  ("Special
Meeting")  to be held on  June  23,  1997 at  3:00  P.M.  at One  State  Street,
Hartford,  Connecticut.  This Prospectus and Proxy Statement,  together with the
Notice of Special  Meeting and proxy card are first being mailed to stockholders
on or about May __, 1997.

         At the Special Meeting  stockholders will vote on a proposal to approve
an Agreement and Plan of Share Exchange (the "Share Exchange") pursuant to which
shares of common stock of a newly formed holding company,  HSB Group, Inc. ("HSB
Group" or "Holding  Company"),  will be exchanged on a one-for-one basis for all
of the  outstanding  shares of common stock of the Company,  shares of preferred
stock  of HSB  Group  will be  exchanged  for all of the  outstanding  Series  B
Convertible  Preferred Shares of the Company,  and certain other transactions as
described herein will be effectuated (the "Restructuring").

         This document also serves as the Prospectus of the Holding Company with
respect  to the  issuance  of up to  20,041,707  shares of  common  stock of the
Holding Company in connection with the Share Exchange.

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

THESE  SECURITIES  HAVE NOT BEEN APPROVED OR  DISAPPROVED  BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES  COMMISSION,  NOR HAS THE SECURITIES
AND  EXCHANGE  COMMISSION  OR ANY STATE  SECURITIES  COMMISSION  PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE. 

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

   
The date of this Prospectus and Proxy Statement is May __, 1997.
    

                                  i

<PAGE>                                


                           AVAILABLE INFORMATION

   
         The Company is subject to the information reporting requirements of the
Securities  Exchange Act of 1934, as amended ("Exchange Act"), and in accordance
therewith  files  reports,  proxy  statements  and  other  information  with the
Securities and Exchange  Commission (the  "Commission" or "SEC").  Such reports,
proxy statements and other information filed by the Company may be inspected and
copied at the public reference  facilities  maintained by the Commission at Room
1024, Judiciary Plaza, 450 Fifth Street, N.W.,  Washington,  D.C. 20549-1004 and
at the following  Regional  Offices of the Commission:  Chicago Regional Office,
CitiCorp  Center,  500  West  Madison  Street,  Suite  1400,  Chicago,  Illinois
60621-2511;  and New York Regional Office, 7 World Trade Center, 13th Floor, New
York,  New York 10048.  The  Commission  also maintains a World Wide Web site at
http://www.sec.gov that contains reports, proxy statements and other information
that the  Company  files  with the  Commission  electronically.  Copies  of such
materials also may be inspected at the New York Stock Exchange, 20 Broad Street,
New York, New York 10005.
    

         HSB Group will become subject to the information reporting requirements
of the  Exchange Act after the  Restructuring  and thus has not made any filings
under the act as yet. If the Restructuring is consummated,  the shares of common
stock of HSB  Group  will be  listed on the New York  Stock  Exchange  under the
trading symbol HSB.

   
         HSB Group has filed with the  Commission  a  registration  Statement on
Form S-4  (together  with any annexes,  exhibits  and  amendments  thereto,  the
"Registration  Statement")  under the Securities  Act of 1933, as amended,  (the
"Securities Act") covering up to 20,041,707 shares of HSB Group common stock.
                                   
         HSB Group has  received  exemptions  from  regulatory  approval  of the
Restructuring on behalf of the Company and its  subsidiaries  from the Insurance
Commissioners  of the State of Connecticut and the State of Texas.  Requests for
approval of the Restructuring before the Secretary of State of the Department of
Trade and Industry in the United Kingdom and the Insurance  Commissioner in Hong
Kong are currently pending.
    
                                     ii
<PAGE>


No  person  has  been  authorized  to  give  any  information  or  to  make  any
representation  not contained in or incorporated by reference in this Prospectus
and Proxy Statement,  and if given or made, such  information or  representation
not  contained  herein must not be relied upon as having been  authorized.  This
Prospectus  and Proxy  Statement  does not  constitute  an offer to sell, or the
solicitation  of an offer to  purchase,  any of the  securities  offered by this
Prospectus  and  Proxy  Statement,  or  the  solicitation  of a  proxy,  in  any
jurisdiction  to or from any person to or from whom it is  unlawful to make such
offer or solicitation of an offer, or proxy  solicitation in such  jurisdiction.
Neither the delivery of this  Prospectus and Proxy Statement nor the issuance or
sale of any securities  hereunder  shall,  under any  circumstances,  create any
implication  that there has been no change in the  information  set forth herein
since the date hereof or incorporated by reference herein since the date hereof.

                INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

   
         The  following  documents  filed by the Company  with the SEC (File No.
0-13300) are  incorporated  in this  Prospectus and Proxy Statement by reference
and made a part hereof:
(i) The Annual  Report on Form 10-K for the year ended  December 31,  1996;  and
(ii) The Quarterly Report on Form 10-Q for the quarter ended March 31, 1997.
    

     All documents subsequently filed by the Company pursuant to Sections 13(a),
13(c),  14 or 15(d) of the  Securities  Exchange Act of 1934,  after the date of
this  Prospectus and Proxy  Statement and prior to the  termination of the offer
made by this Prospectus and Proxy Statement,  shall be deemed to be incorporated
in this Prospectus and Proxy Statement by reference and to be a part hereof from
the respective dates of filing of such documents.  Any statement  contained in a
document  incorporated  or  deemed  to be  incorporated  by  reference  in  this
Prospectus and Proxy  Statement shall be deemed to be modified or superseded for
purposes of this  Prospectus and Proxy  Statement to the extent that a statement
contained  herein,   or  in  any  subsequently   filed  document  that  also  is
incorporated  or deemed to be  incorporated  by  reference  herein,  modifies or
supersedes  such statement.  Any such statement so modified or superseded  shall
not be deemed, except as so modified or
                                       
                                      iii

<PAGE>

superseded to constitute a part of this Prospectus and Proxy Statement.

   
As described above, this Prospectus and Proxy Statement  incorporates  documents
by  reference  which are not  presented  herein  or  delivered  herewith.  These
documents  are  available  without  charge upon request  delivered  to: R. Kevin
Price,  Corporate Secretary,  The Hartford Steam Boiler Inspection and Insurance
Company, One State Street, P.O. Box 5024, Hartford, Connecticut,  06102-5024. In
order to ensure timely delivery, any request should be made by June 16, 1997.
    


                                    iv

<PAGE>

   

                                TABLE OF CONTENTS
                                                      Page
                                                      ----
General.................................................1

Voting..................................................1

Summary of Share Exchange Proposal......................3
     Description of Share Exchange and Restructuring....3
     Purposes of Restructuring..........................3
     Regulation after the Share Exchange................4
     Management of HSB Group............................4
     Exchange Listing and Exchange of Stock
       Certificates.....................................4
     Tax Consequences of Share Exchange.................4
     Stockholder Vote Required for Approval.............5
     Dissenters' Appraisal Rights.......................5
     Regulatory Approvals...............................5
     Conditions to the Share Exchange...................5

Risk Factors............................................6

Proposal to Approve Share Exchange......................7
     Recommendation of Directors........................7
     Description of Share Exchange and Restructuring ...7
     Purposes of Restructuring.........................11
     Required Regulatory Approvals and other
       Regulatory Matters..............................13
     Insurance Ratings.................................14
     Management after the Share Exchange...............15
     Conditions to the Share Exchange..................15
     Dividend Policy...................................16
     HSB Group Capital Stock and Rights Plan...........18
     Comparative Rights of Stockholders................20
     Effective Time of Share Exchange..................23
     Amendment, Waiver or Termination..................23
     Certain Federal Income Tax Consequences...........24
     Stock Plans and Other Employee Benefit Plans......24
     Automatic Dividend Reinvestment Plan (DRP)
       and Payroll Investment Plan (PIP)...............25
     Trading of HSB Group Common Stock.................26
     Transfer and Dividend Disbursement Agent;
           Exchange of Stock Certificates..............26
     Dissenters' Appraisal Rights......................26
     Financial Statements..............................30
     Dividends and Market Price Ranges.................30
     Legal Opinions....................................31
     Experts...........................................31

                                  v

<PAGE>

     Stockholder Vote Required for Approval............31

Deadline for Stockholder Proposals.....................32

Other Matters..........................................32

Appendix A:  Agreement and Plan of Share Exchange.....A-1
Appendix B:  Connecticut Business Corporation Act:
  Dissenters' Rights..................................B-1
Appendix C:  Articles of Incorporation of HSB Group,
  Inc.................................................C-1
Appendix D:  Bylaws of HSB Group, Inc.................D-1

    

                                 vi

<PAGE>

   
                                   GENERAL

        The  enclosed  proxy  is  solicited  by the  Board of  Directors  of The
Hartford Steam Boiler  Inspection  and Insurance  Company for use at the Special
Meeting  of  Stockholders  to be  held  June  23,  1997,  and  at  any  and  all
adjournments thereof. The Company is a Connecticut corporation and its principal
office is located at One State  Street,  P.O.  Box 5024,  Hartford,  Connecticut
06102-5024, (860) 722-1866.

        Arrangements  will be made with  brokers,  nominees and  fiduciaries  to
distribute  proxy material to their  principals,  and their postage and clerical
expenses in so doing will be paid by the Company.  The entire cost of soliciting
proxies  on  behalf  of  management  will be  borne by the  Company.  Directors,
officers and regular employees of the Company may solicit proxies  personally if
proxies are not received  promptly.  The Company has retained Corporate Investor
Communications, Inc. ("CIC") to aid in the solicitation of proxies. CIC's fee is
not expected to exceed $4,000 in addition to out-of-pocket expenditures.

                                     VOTING

        It is intended  that only the  proposal  described  in the  accompanying
Notice be presented at the meeting.  The  Connecticut  Business  Corporation Act
provides that only the business  described in the notice of a special meeting of
stockholders may be conducted at such meeting.


        You are urged to read this  Prospectus  and Proxy  Statement and to fill
in, date, sign and return the enclosed form of proxy. The giving of a proxy does
not affect your right to vote should you attend the meeting and the proxy may be
revoked  at any time  before it is  voted,  except as  outlined  in the  section
captioned  "Dissenters'  Appraisal Rights" located on page 26. Properly executed
proxies not revoked will be voted as specified.

         Abstentions  and broker  non-votes  are included in the total number of
shares  represented  for  matters  to be voted  upon at the  meeting  for quorum
purposes;  however,  they will have the effect of a vote AGAINST the proposal to
approve the Share Exchange.

                                      -1-
<PAGE>

     Only  holders of Company  Common  Stock and  Company  Series B  Convertible
Preferred  Stock of  record  at the  close of  business  on April  25,  1997 are
entitled to notice of, and to vote at, the meeting.  Each  stockholder of record
on such date is being  mailed the Notice,  Prospectus  and Proxy  Statement  and
Proxy card on or about May __, 1997. On April 25, 1997, there were x outstanding
shares of Company Common Stock, each entitled to one vote, and 2,000 outstanding
shares of Company Series B Convertible Preferred Stock (all of which are held by
General Reinsurance Corporation),  each entitled to 199 votes. The directors and
executive  officers  of the Company as a group own less than x of the issued and
outstanding shares of Company Common Stock and none of the Preferred Stock.


                                      -2-
<PAGE>

SUMMARY OF SHARE EXCHANGE PROPOSAL

The  following  is a summary  of  certain  information  regarding  the  proposed
Agreement and Plan of Share  Exchange and related  transactions  comprising  the
Restructuring  contained or  incorporated  by reference in this  Prospectus  and
Proxy  Statement  and  is  qualified  in  its  entirety  by  the  more  detailed
information  contained or  incorporated by reference  herein.  For more detailed
information   concerning  the  Restructuring  see  "Proposal  to  Approve  Share
Exchange" on page 7.

The Board of Directors  unanimously  recommends that you vote "FOR" the Proposal
to Approve the Agreement and Plan of Share Exchange.

Description of Share Exchange and Restructuring
- -----------------------------------------------

         HSB Group was  incorporated  to become the holding  company of, and the
direct owner of, the Company and certain of the Company's subsidiaries.  Certain
other  subsidiaries  of the Company  will  continue  to be directly  held by the
Company. The organizational  charts on page 10 show the structure of the Company
before  and  after  the  proposed  Restructuring.   The  Restructuring  will  be
effectuated  by a share  exchange  whereby  each share of common  stock,  no par
value, of the Company ("Company Common Stock"), outstanding immediately prior to
the  effective  time of the exchange  will be exchanged  for one share of common
stock, no par value, of HSB Group ("HSB Group Common Stock"),  and each share of
Series B Convertible  Preferred Stock of the Company ("Company Preferred Stock")
will be exchanged for one share of Series B Convertible  Preferred  Stock of HSB
Group,  having the same rights and preferences ("HSB Group Preferred Stock"). As
a result, following the exchange, all outstanding shares of Company Common Stock
and  Company  Preferred  Stock  will  be held by the  Holding  Company,  and all
outstanding  shares of the Holding  Company  will be owned by the holders of the
Company  Common  Stock and  Company  Preferred  Stock,  respectively,  that were
outstanding immediately prior to the effective time of the exchange.
    

Purposes of Restructuring
- -------------------------

         The   Restructuring   will  provide  greater  operating  and  financial
flexibility  in connection  with certain 

                                      -3-
<PAGE>

investments,  business  operations  and financing  activities  than is available
under the current structure. Holding company structures are frequently used when
an organization  conducts  regulated and unregulated lines of businesses and are
commonly found in the insurance industry.

   
Regulation after the Share Exchange
- -----------------------------------

         After the Share  Exchange,  the Company will  continue to be subject to
regulation by the Insurance  Commissioner  of the State of Connecticut and other
regulatory  authorities in jurisdictions  within which the Company  continues to
transact  business.   Such  regulations  include  provisions  that  will  impose
restrictions  on certain  transactions  among the  Company,  HSB Group and their
affiliates.
    

Management of HSB Group
- -----------------------

   
         The directors of HSB Group,  upon  consummation  of the Share Exchange,
will be the same persons who presently serve as directors of the Company and the
executive  officers of HSB Group will consist of the current executive  officers
of the Company.
    

Exchange Listing and Exchange of Stock Certificates
- ---------------------------------------------------

   
         It is anticipated that the HSB Group Common Stock to be received by the
Company's  common  stockholders  in the Share Exchange will be listed on the New
York  Stock   Exchange  under  the  trading  symbol  HSB  effective  as  of  the
consummation of the Share Exchange. This will enable stockholders of the Company
to trade the HSB Group  Common  Stock which they  receive in the Share  Exchange
without interruption.

         It will not be necessary  for  stockholders  to exchange  their Company
Common Stock certificates for HSB Group Common Stock certificates.  Certificates
representing Company Common Stock will automatically represent the corresponding
shares of HSB Group Common Stock upon consummation of the Share Exchange.

Tax Consequences of Share Exchange
- ----------------------------------

         It is a condition to the  consummation  of the Share  Exchange that the
Company receive an opinion from Skadden,  Arps,  Slate,  Meagher & Flom LLP, tax
counsel for the 

                                      -4-
<PAGE>

Company,  to the effect that,  based upon certain  representations,  among other
things, the holders of the Company Common Stock and Company Preferred Stock will
recognize no gain or loss upon the  exchange of their  shares of Company  Common
Stock and Company  Preferred  Stock  solely for shares of HSB Group Common Stock
and HSB Group Preferred Stock, respectively.

Stockholder Vote Required for Approval
- --------------------------------------

         Approval of the proposed  Share  Exchange  will require the approval of
two-thirds  of all  outstanding  shares of  Company  Common  Stock  and  Company
Preferred Stock voting together as a single class.
    


Dissenters' Appraisal Rights
- ----------------------------

   
         Holders of Company Common Stock and Company  Preferred  Stock will have
the right to have  their  shares  appraised  and be paid the fair value of their
shares.  Stockholders who wish to exercise their dissenters'  rights must follow
carefully  the  procedures  described  on  page  30  herein  under  the  caption
"Dissenters'  Appraisal  Rights".  Failure to do so could  result in the loss of
such rights.
    

Regulatory Approvals
- --------------------

   
         The  Company  has  received  exemptions  relating  to  approval  of the
Restructuring  from the Insurance  Commissioners of the State of Connecticut and
the State of Texas.  Requests for approval of the  Restructuring  are  currently
pending before the Secretary of State of the Department of Trade and Industry in
the United Kingdom and the Insurance  Commissioner in Hong Kong. Receipt of such
exemptions is a condition to the consummation of the Share Exchange.

Conditions to the Share Exchange
- --------------------------------

         The  obligation  of the Company and HSB Group to  consummate  the Share
Exchange is subject to various conditions, including, but not limited to:

(i) obtaining the required approval of the Company's stockholders;


                                      -5-
<PAGE>

(ii) the  approval or  exemption  of the  insurance  regulatory  authorities  in
Connecticut, Texas, the United Kingdom and Hong Kong; (iii) the effectiveness of
the  Registration  Statement;  (iv)  authorization  for listing HSB Group Common
Stock on the New York Stock Exchange; (v) receipt of an opinion from tax counsel
for the Company that the Share Exchange constitutes a tax-free transaction under
the  Internal  Revenue  Code of 1986,  as amended,  to the  stockholders  of the
Company upon their  exchange of Company  stock solely for HSB Group stock;  (vi)
receipt of an opinion as to the  legality of the HSB Group  Common Stock and HSB
Group Preferred Stock issuable in connection with the Share Exchange;  and (vii)
the absence of any injunction prohibiting or restricting in any manner the Share
Exchange or the operation of HSB Group, the Company or any of their subsidiaries
after consummation of such Share Exchange.

Risk Factors
- ------------

The future  performance  of HSB Group Common Stock cannot be assured.  Following
the  consummation  of the  Restructuring,  HSB  Group  will  be  able  to  issue
securities  or incur debt for the purpose of  financing or investing in business
activities  in which the Company or its  insurance  company  affiliates  are not
involved,  and  therefore,  prior  insurance  regulatory  approval  will  not be
necessary.  Moreover, HSB Group through its non-insurance subsidiaries may enter
into  businesses  in which the Company and its  subsidiaries  are not  presently
engaged.  Such  business  activities  may  involve a  greater  degree of risk or
investment  concentration  than would  generally be  permitted if such  business
activities  were  engaged  in by a  regulated  insurance  company.  Engaging  in
business  activities  with greater risk may or may not have an adverse impact on
the future performance of HSB Group's Common Stock.


                                      -6-
<PAGE>


                       PROPOSAL TO APPROVE SHARE EXCHANGE

         The following  description is qualified in its entirety by reference to
the Agreement and Plan of Share Exchange  attached hereto as Appendix A, certain
provisions of the Connecticut Business Corporation Act relating to the rights of
dissenting  stockholders attached hereto as Appendix B, the restated Articles of
Incorporation  of HSB Group attached hereto as Appendix C, and the Bylaws of HSB
Group attached hereto as Appendix D. The transactions described below, including
those  contemplated by and carried out in connection with the Agreement and Plan
of Share Exchange are sometimes referred to herein as the "Restructuring".

Recommendation of Directors
- ---------------------------

         The Board of Directors of the Company and HSB Group have each  approved
the Restructuring which, among other things, provides for the acquisition of all
outstanding  shares of Company  Common  Stock in exchange for an equal number of
shares of HSB Group Common Stock and the acquisition of all  outstanding  shares
of Company  Preferred  Stock in  exchange  for an equal  number of shares of HSB
Group  Preferred  Stock  pursuant to Section 33-816 of the  Connecticut  General
Statutes.  All of the 2,000  outstanding  shares of Company  Preferred Stock are
held by General Reinsurance Corporation.  General Reinsurance has indicated that
it intends to vote in favor of the proposal to approve the Share Exchange.

For the reasons  discussed  below in "Purposes of  Restructuring",  the Board of
Directors of the Company  believes  that the proposed  Share  Exchange is in the
best interests of the Company and its  stockholders.  Accordingly,  the Board of
Directors  unanimously  recommends  that  stockholders  vote FOR the proposal to
approve the Agreement and Plan of Share Exchange.


Description of Share Exchange and Restructuring
- -----------------------------------------------

         HSB  Group is a newly  incorporated  Connecticut  corporation  with its
principal  offices  at  One  State  Street,  Hartford,  Connecticut  06102-5024,
telephone  (860)  722-1866.  It was  formed  at the  direction  of the  Board of
Directors of the Company for the purpose of effecting  the Share  Exchange,


                                      -7-
<PAGE>

and therefore it has no operating  history.  There will be certain  one-time and
other  ongoing  costs  incurred in  connection  with the  Restructuring  such as
administrative  expenses,  registration  fees and  franchise  and  other  taxes.
However,  such costs, which will be borne by the Company, are not expected to be
material.

         If the  Share  Exchange  is  approved  by  stockholders,  and all other
conditions  contained in the Agreement and Plan of Share Exchange are satisfied,
subject  to  the  exercise  and  perfection  of  dissenters'   appraisal  rights
(described  below  under the  caption  "Dissenters'  Appraisal  Rights")  at the
effective time of the Share Exchange (the "Effective  Time"),  (a) each share of
Company Common Stock outstanding immediately prior to the Effective Time will be
exchanged  for one share of HSB Group  Common  Stock,  (b) each share of Company
Preferred  Stock  outstanding  immediately  prior to the Effective  Time will be
exchanged  for one share of HSB Group  Preferred  Stock (which  series will have
substantially  identical rights and preferences as Company  Preferred Stock). In
addition,  at the  Effective  Time each share of HSB Group  Common Stock (all of
which are currently held by the Company) which is outstanding  immediately prior
to the  Effective  Time  will be  canceled  and  restored  to the  status  of an
authorized but unissued share of HSB Group Common Stock.
    

         As a result  immediately  following the Effective Time, all outstanding
shares of Company Common Stock and Company  Preferred  Stock will be held by HSB
Group, and all of the outstanding shares of HSB Group Common Stock and HSB Group
Preferred  Stock will be owned by the holders of shares of Company  Common Stock
and Company Preferred Stock, respectively,  of the Company that were outstanding
immediately prior to the Effective Time.

   
         Following the Share Exchange,  the consolidated  financial position and
consolidated  results of operations of HSB Group should be identical to those of
the Company immediately prior to the exchange. As part of the Restructuring, the
Company will be  transferring  certain of its  engineering  subsidiaries  to HSB
Group as a dividend on the Company  Common Stock held by HSB Group.  (See charts
below for organizational  structures before and after the  Restructuring.)  Such
subsidiaries currently comprise an immaterial amount of the consolidated assets,


                                      -8-
<PAGE>

and provide an immaterial portion of the consolidated revenues and net income of
the Company. HSB Group will obtain funds to invest in such subsidiaries, as well
as to acquire or create new  subsidiaries,  primarily from dividends paid to HSB
Group on the  shares of Company  Common  Stock it will own  following  the Share
Exchange,  borrowings  by HSB Group  from  third  parties,  the  Company  or its
subsidiaries,  and  any  dividends  HSB  Group  may  receive  from  any  of  its
subsidiaries other than the Company.  There can be no assurance,  however, as to
the  availability of such borrowings or amount of earnings  available to be paid
as dividends to HSB Group by any of its subsidiaries,  including the Company. In
addition,  certain of the transactions described above in which the Company is a
party, may, depending on the nature and amount of the transaction, be subject to
insurance  regulatory  restrictions,  or in some  cases,  prior  approval.  (See
"Required Regulatory Approvals and other Regulatory Matters" on page 13.)

         In addition to the  transfer  of certain of the  Company's  engineering
subsidiaries to HSB Group, in order to streamline operations, Radian Corporation
will be merged into the Company  shortly  following the  Restructuring.  (Radian
Corporation  currently  conducts no business  operations and has no assets other
than its 40%  interest  in  Radian  International  LLC.)  The  following  charts
represent  the current  corporate  structure  of the  Company  and the  proposed
structure after the Restructuring is completed.
    


                                      -9-
<PAGE>


Current
- -------

    The Hartford Steam Boiler Inspection and Insurance Company
          |                     |                        |
          |                     |                        |
Domestic and Foreign            |                        |
Insurance Subsidiaries         Engineering Services    Radian
and Investment Subsidiaries    Subsidiaries            Corporation
                                                         |  
                                                       Radian International
                                                       LLC (40% owned)


After Restructuring
- -------------------
                      HSB Group, Inc.
                       |           |
                       |           |
             Engineering          The Hartford Steam Boiler Inspection
             Services             and Insurance Company
             Subsidiaries            |              |
                                     |              |
                                  Domestic        Radian International LLC
                                  and Foreign     (40% owned)
                                  Insurance
                                  Subsidiaries
                                  and Investment
                                  Subsidiaries



                                      -10-
<PAGE>

   
         Other  subsidiaries  or assets of the Company may be transferred to HSB
Group or subsidiaries  of HSB Group in the future,  consistent with the purposes
of the  Restructuring  described  below and subject to the insurance  regulatory
restrictions   summarized  under  "Required   Regulatory   Approvals  and  other
Regulatory Matters" on page 13.
    

Purposes of Restructuring
- -------------------------

         The Board of Directors and  management of the Company  believe it is in
the best interests of the Company and its  stockholders to approve the formation
of the holding company structure  described herein.  Holding company  structures
are frequently  used when an  organization  conducts  regulated and  unregulated
lines of businesses and are commonly found in the insurance industry.

   
         Currently, as an insurance company,  Hartford Steam Boiler's operations
are regulated in many respects by the insurance authorities of the jurisdictions
within which it conducts business.  Among other things, such regulations address
the  nature  and  amount  of  business  that  can  be  written,   the  type  and
concentration   of  permitted   investments,   and  the  nature  and  extent  of
transactions, including dividends and loans, that can be entered into between an
insurer  and  an  affiliate  without  prior  regulatory  approval.   While  such
regulations  advance the insurance  regulators'  objective of  safeguarding  the
financial security of insurance companies for the benefit of policyholders, they
also could constrain the ability of the Company to compete  effectively in other
non-insurance activities.  For example, many of the competitors of the Company's
engineering  services business are not insurance companies and therefore are not
subject to similar constraints.

         The holding  company  structure  proposed by  management  and the Board
would provide  greater  operating and financial  flexibility in connection  with
certain  financing  activities,  investments  and  business  operations  than is
available under the current structure where a regulated insurance company is the
parent company. In particular,  the proposed structure would advance the Board's
goal of enhancing  shareholder  value through the  development or acquisition of
engineering service businesses.  The Restructuring will give the Company greater
flexibility  to  develop  or  acquire  such  businesses  with  fewer  regulatory
constraints  thereby providing more 


                                      -11-
<PAGE>

opportunities  for  increased  earnings.  For  example,  capital  raising at the
holding  company level could be used to create or acquire such businesses and to
support  their  future  operations,   as  well  as  the  operations  of  current
non-insurance  subsidiaries,  without  affecting  the  surplus  position  of the
Company.  Moreover,  the  ability  to raise  capital  without  prior  regulatory
approval  would allow the Company to compete on a more level  playing field with
other  potential   acquirors  who  are  not  subject  to  insurance   regulatory
constraints.

         Additionally,  HSB Group  would not be  subject to the  limitations  on
investments  currently  imposed  upon  the  Company  and its  insurance  company
subsidiaries  pursuant to the insurance laws of the various  jurisdictions under
which  they are  regulated.  The  Company  does not  have any  present  plans to
diversify  into  businesses or make  investments  that would not be permitted or
that would exceed current restrictions. However, the Board of Directors believes
that the  proposed  holding  company  structure  will  provide it with  enhanced
flexibility and efficiency to facilitate any such  diversification or investment
in the  future.  It is  currently  contemplated  that  such  diversification  or
investment  would be consistent with the Company's  business concept of applying
engineering  and technology to help design risk  management and loss  prevention
programs for organizations that rely on equipment.

         Management has considered changing its organizational  structure in the
past  to  separate  its  regulated  insurance  activities  from  certain  of its
unregulated   engineering  services.   Now  however,   having  a  more  flexible
organizational structure will be of increased significance in the event that the
Company exercises its option to sell its interest in Radian International LLC to
The Dow Chemical  Company  ("Dow") on or after December 31, 1997 pursuant to the
terms of its joint venture  agreement with Dow. In view of the current  business
climate for environmental  consulting  services,  the Company will be evaluating
its sale option, as well as other alternatives,  involving Radian  International
during 1997.  Having the proposed  Restructuring  in place in the event that the
Company  decides to exercise  its sale option will provide the Company with more
flexibility  to  utilize  the sale  proceeds  in a manner  that  the  Board  and
management believe will enhance shareholder value.

                                      -12-
<PAGE>

         In  addition,   future   investments   or  newly  acquired  or  created
subsidiaries  that would create a charge  against  risk-based  capital under the
insurance  laws if held  by the  Company  could  be  held by HSB  Group  without
affecting the Company's risk-based capital calculations.
    

Required Regulatory Approvals and other Regulatory Matters
- ----------------------------------------------------------

   
         The Company and HSB Group have filed for and received an exemption from
regulatory  approval  of the  Restructuring  on  behalf of the  Company  and its
subsidiaries  with the Insurance  Commissioner of the State of Connecticut,  the
Company's domiciliary state.

         In addition,  because the Company has insurance  subsidiaries domiciled
in Texas and the United  Kingdom,  and a branch office in Hong Kong, the Company
and HSB Group are required to file requests for approval or exemptions therefrom
with the  Insurance  Commissioner  of the Texas  Department  of  Insurance,  the
Secretary of State of the Department of Trade and Industry in the United Kingdom
and the Insurance Commissioner of Hong Kong. An exemption from approval has been
granted  by the  Texas  Insurance  Commissioner.  The other  requests  are still
pending; however, the Company expects that such approvals will be granted and is
unaware  of any  grounds  for  such  regulatory  authorities  to  withhold  such
approvals.
    

         Neither  the  Company  nor HSB Group is aware of any  other  regulatory
approvals that are necessary in order to consummate the Restructuring other than
the filing of the  Articles of Share  Exchange  with the  Secretary  of State of
Connecticut.  If the  requisite  regulatory  approvals  are  not  received,  the
Restructuring will not be effectuated. All expenses of the Company in connection
with  the  Restructuring,  whether  consummated  or not,  will be  borne  by the
Company.

         Following  the  consummation  of the  Restructuring,  the Company  will
continue to be a  Connecticut-domiciled  insurance  company and as such, will be
subject to regulation and examination by the Insurance Commissioner of the State
of Connecticut. The Company and its insurance subsidiaries will also continue to
be subject to  regulation  by the  insurance  commissioners  or other  insurance
regulatory


                                      -13-
<PAGE>

authorities  in the  jurisdictions  in which the  Company  and its  subsidiaries
transact the business of insurance.

         Because the Company currently has insurance  subsidiaries,  the Company
and its  affiliates  are already  considered to be part of an insurance  holding
company system regulated under the insurance holding company laws of Connecticut
and certain  other  jurisdictions.  Among other  things,  such laws require that
transactions   between  insurance  company  members  of  the  system  and  their
affiliates  be on fair  and  reasonable  terms  and that  certain  transactions,
including  dividends paid by the insurance company members exceeding  prescribed
limits,  receive  the prior  approval  of the  applicable  insurance  regulatory
authority.  The  Restructuring  will result in the  addition of HSB Group to the
holding  company  system.  Therefore,  dividends or other  distributions  on the
Company Common Stock paid to HSB Group or certain transactions between HSB Group
and  the  Company  or  any of  its  insurance  subsidiaries  may  require  prior
regulatory approval.

         The  Company  and HSB Group as  Connecticut  corporations  will also be
governed by the general corporate laws of the State of Connecticut.

Insurance Ratings
- -----------------

         The Company currently has a financial  condition rating from A. M. Best
Company  ("Best's") of A+. Best's ratings are based upon a comprehensive  review
of a company's  financial  performance  which is  supplemented  by certain data,
including  responses  to  Best's  questionnaires,  quarterly  filings  with  the
National  Association of Insurance  Commissioners,  state  insurance  department
examination reports, loss reserve reports, annual reports and reports filed with
the  Commission.   Best's  undertakes  a  quantitative   evaluation  based  upon
profitability,   leverage/capitalization   and   liquidity   and  a  qualitative
evaluation  based  upon  the  company's  book of  business  or  spread  of risk,
appropriateness  and quality of reinsurance,  the quality,  diversification  and
estimated  market  value of its assets,  the  adequacy of its loss  reserves and
policyholders'  surplus,  the capital  structure  of the company and its holding
company,  if present,  the experience and integrity of its  management,  and the
company's market presence. Best's rating classifications are as follows: A++ and
A+ 


                                      -14-
<PAGE>

(Superior),  A and A- (Excellent),  B++ and B+ (Very Good), B and B- (Adequate),
C++ and C+ (Fair),  C and C-  (Marginal),  D (Very  Vulnerable),  E (Under State
Supervision) and F (In Liquidation).

         Based on  discussions  with  officials  at  Best's,  management  of the
Company  does not  believe  that  Best's  will alter its  current  rating of the
Company  as a result of the  Restructuring.  However,  until the  normal  rating
process is completed in June, 1997, there can be no assurance that the Company's
rating will not be altered following the Restructuring.

   
         A  Best's  rating  is  not  a  recommendation  to  buy,  sell  or  hold
securities.  It may be  withdrawn  or  revised  at any  time  and it  should  be
evaluated  independently of any other rating that may be assigned to the Company
or HSB Group.

Management after the Share Exchange
- -----------------------------------

         Following the Restructuring, each director of the Company will become a
director  of HSB Group,  each for the  then-current  term to which he or she was
elected by the stockholders of the Company.  Therefore, four directors will hold
office  until the first  annual  meeting of  stockholders  of HSB Group which is
expected to take place in April 1998;  four directors will hold office until the
1999 annual meeting of stockholders of HSB Group;  and three directors will hold
office until the 2000 annual meeting of stockholders of HSB Group.
    

         The present  executive  officers of the Company will serve as executive
officers of HSB Group following the Restructuring.

   
Conditions to the Share Exchange
- --------------------------------

         The  obligation  of the Company and HSB Group to  consummate  the Share
Exchange is subject to various  conditions  (certain of which may be waived,  as
described  below  under  the  caption   "Amendment,   Waiver  or  Termination"),
including,  but not  limited  to: (i)  obtaining  the  required  approval of the
Company's  stockholders as described below under the caption  "Stockholder  Vote
Required  for  Approval";


                                      -15-
<PAGE>

(ii) the  approval or  exemption  of the  insurance  regulatory  authorities  in
Connecticut,  Texas,  the United  Kingdom and Hong Kong, or any other  consents,
approvals or exemptions  necessary or appropriate  for the  consummation  of the
Restructuring,  each  such  consent,  exemption  or  approval  to be in form and
substance  satisfactory  to the  Company.  (The  Company  is  aware  of no  such
consents,  approvals  or  exemptions  which are  required  other  than  those of
Connecticut,  Texas, the United Kingdom and Hong Kong);  (iii) the effectiveness
of the Registration Statement under the Securities Act relating to the HSB Group
Common  Stock to be issued or  reserved  for  issuance  in  connection  with the
Agreement  and  Plan of Share  Exchange;  (iv)  authorization  for  listing,  on
official notice of issuance, of the HSB Group Common Stock on the New York Stock
Exchange;  (v) receipt of an opinion from Skadden,  Arps, Slate,  Meagher & Flom
LLP, tax counsel for the Company, covering the matters set forth below under the
caption "Certain Federal Income Tax Consequences"; (vi) receipt of an opinion of
counsel as to the  legality of HSB Group  Common  Stock and HSB Group  Preferred
Stock issuable in connection with the Agreement and Plan of Share Exchange;  and
(vii) the absence of any injunction prohibiting or restricting in any manner the
Share  Exchange  or the  operation  of HSB  Group,  the  Company or any of their
subsidiaries after consummation of such Share Exchange.
    

Dividend Policy
- ---------------

   
         HSB Group does not currently,  nor will it following the Restructuring,
conduct  directly any business from which it will derive revenues other than the
possible  performance  of  certain  management,  accounting,  financial,  legal,
administrative  and  other  support  services  and  operations  relating  to the
business conducted by the Company, its insurance  subsidiaries and certain other
subsidiaries  of HSB Group.  HSB Group will fund its own operations with amounts
paid by its  subsidiaries  for the  provision  of such  services,  from sales of
securities or debt incurred by HSB Group and from dividends paid to HSB Group on
the stock it holds in the Company and its other subsidiaries.
    

         For the foreseeable future, dividends on HSB Group Common Stock and HSB
Group Preferred Stock will primarily


                                      -16-
<PAGE>

depend on the ability of the Company to pay  dividends to HSB Group.  Payment of
dividends by the Company will be dependent upon the operating  results,  capital
requirements, financial condition and regulatory requirements of the Company and
its subsidiaries.

         Under  Connecticut  law, a corporation  may not make a distribution  to
stockholders if, after giving effect thereto,  the corporation would not be able
to pay its debts as they  become  due in the usual  course  of  business  or the
corporation's  total assets would be less than the sum of its total  liabilities
plus,  unless the articles of incorporation  permit  otherwise,  the amount that
would be needed, if any, to satisfy the preferential  rights upon dissolution of
stockholders  whose  preferential  rights are  superior to those  receiving  the
distribution.  Additionally,  under  Connecticut  insurance  law,  an  insurance
company  cannot  pay  a  dividend,  without  prior  approval  of  the  Insurance
Commissioner,  that exceeds its earned  surplus,  as determined  under statutory
accounting  practices,  or which,  when combined with that of other dividends or
distributions  made within the prior twelve  months,  exceeds the greater of (i)
ten percent of the  company's  surplus with respect to  policyholders  as of the
December 31st last preceding; or (ii) the net income for the twelve-month period
ending on the December 31st last preceding.  Under Connecticut insurance law, at
least ten days' prior notice of any dividend or  distribution  is required to be
given to the  Insurance  Commissioner.  The  Commissioner  may  order  that such
dividends  or  distributions  not be paid if payment  would cause the  insurance
company's  surplus  to be  inadequate  or could  lead to a  hazardous  financial
condition.

   
         It is currently  contemplated that, subject to the rights of holders of
any  outstanding  shares  of HSB  Group  Preferred  Stock,  HSB  Group  will pay
quarterly  dividends on its common stock at a rate at least equal to the current
rate of $.57 per share on Company  Common  Stock.  During 1997,  payment of such
dividends by the Company to its stockholders  will require the prior approval of
the Connecticut Insurance Commissioner,  as described above. In addition,  there
can be no assurance that following the  Restructuring  dividends will be paid or
will  continue  to be paid at  historical  levels  based  on the  aforementioned
factors and statutory  restrictions,  the factors listed under "Risk Factors" on
page 6, or other factors.
    

                                      -17-
<PAGE>

HSB Group Capital Stock and Rights Plan
- ---------------------------------------

   
         The  authorized  capital  stock of HSB Group will consist of 50,000,000
shares  of HSB Group  Common  Stock and  500,000  shares of HSB Group  Preferred
Stock, the provisions of which are included in the Amended and Restated Articles
of Incorporation of HSB Group attached to this Prospectus and Proxy Statement as
Appendix  C.  Reference  is made to  Appendix  C for the  complete  terms of HSB
Group's  Articles of Incorporation as they will be in effect as of the Effective
Time of the Share  Exchange.  Also see the description of  stockholders'  rights
described under the caption "Comparative Stockholders' Rights" below.

     At the Record  Date,  x shares of Company  Common Stock and 2,000 shares of
Company Preferred Stock were outstanding;  x shares of Company Common Stock were
reserved for issuance  pursuant to the 1995 Stock  Option  Plan,  the  Long-Term
Incentive Plan, the Directors Stock and Deferred  Compensation Plan, the Service
Award  Plan,  the  Thrift  Incentive  Plan  and the  conversion  of the  Company
Preferred Stock; and 250,000 shares of Series A Junior  Participating  Preferred
Stock were  reserved for issuance  pursuant to a Rights  Agreement,  dated as of
November 28, 1988 between the Company and The First National Bank of Boston (the
"Rights Plan").
    

         For each  outstanding  share of Company  Common Stock,  the Company has
distributed  one right (each a "Right") to purchase  from the  Company,  one-two
hundredth of a share of Series A Junior  Participating  Preferred Stock pursuant
to the Rights Plan. If the Restructuring is approved and consummated,  HSB Group
will assume the  Company's  rights and  obligations  under the Rights plan,  and
Rights to purchase  Series A Junior  Participating  Preferred  Stock will become
Rights to purchase HSB Group Series A Junior Participating Preferred Stock.

         The  following is a  description  of the  principal  provisions  of the
Rights Plan and the Rights  distributed  by the  Company.  The Rights  expire on
November 28, 1998.

         No separate Rights  certificates of the Company have been  distributed,
and none will be distributed until the earlier of (i) 10 business days following
a public 


                                      -18-
<PAGE>

announcement that a person or group of affiliated or associated persons has been
determined by the Board to be an Acquiring  Person; or (ii) 10 business days (or
such later date as may be determined  by the Board of  Directors)  following the
commencement  of a tender offer or exchange  offer that would result in a person
or group becoming an Acquiring Person.  "Acquiring Person" means any person who,
together with its affiliates and associates is or becomes the beneficial holder,
directly  or  indirectly,  of (i) 20 percent or more of the voting  stock of the
Company;  or (ii) a substantial amount of Company Common Stock (but no less than
10  percent)  and  whose  acquisition  of such  stock the  Board  determines  is
detrimental to the best long-term interests of the Company and its stockholders.
The date any person becomes an Acquiring Person is the "Stock Acquisition Date."

         If a person  becomes an Acquiring  Person  (except  pursuant to certain
offers which the Board  determines to be fair to, and in the best  interests of,
the stockholders and the Company),  each holder of a Right, except the Acquiring
Person,  will thereafter have the right to receive,  upon exercise of the Right,
Common Stock (or in certain circumstances, cash, property or other securities of
the Company)  having a value equal to two times the exercise  price of $110. All
Rights that are, or (under certain  circumstances)  were,  beneficially owned by
any Acquiring Person will be null and void. However,  Rights are not exercisable
for a period of 10 business days after the Stock  Acquisition Date, during which
period they may be redeemed by the Company at a price of $.01 per Right.

         If at any time following the Stock Acquisition Date, (i) the Company is
acquired in a merger or other  business  combination  transaction in which it is
not the surviving  corporation  (other than  transactions  with certain  Company
subsidiaries  and  other  than a merger  following  an  offer  which  the  Board
determines to be fair);  or (ii) 50 percent or more of the assets,  cash flow or
earning  power of the  Company  is sold or  transferred  (other  than to certain
Company  subsidiaries),  each holder of a Right (except Rights which  previously
have  been  voided,  as set  forth  above)  shall  thereafter  have the right to
receive,  upon  exercise,  common stock of the acquiring  company having a value
equal to two times the exercise price of the Right.

                                      -19-
<PAGE>

Comparative Rights of Stockholders
- ----------------------------------

         The Company and HSB Group are both Connecticut corporations.  After the
Effective Time, holders of Company Common Stock will become holders of HSB Group
Common Stock,  and holders of the Company's  Preferred Stock will become holders
of HSB  Group's  Preferred  Stock,  and their  rights  will be  governed  by the
Articles  of  Incorporation  and Bylaws of HSB Group,  instead of the  Company's
Charter and Bylaws.  HSB Group's Articles of Incorporation have been prepared in
accordance with the Connecticut  Business  Corporation Act ("CBCA") and give HSB
Group  broad  corporate  powers  to engage in any  lawful  activity  for which a
corporation  may be  formed  under  the laws of the  State of  Connecticut.  The
Company's powers are more narrow and are limited to those specifically set forth
in its Charter.  The Charter  permits the Company to write boiler and  machinery
and other lines of  insurance  and  reinsurance,  other than life and  endowment
insurance  and  annuity  contracts,   and  to  perform  inspections  and  render
inspection and engineering services in connection with the design, construction,
maintenance  or operation of boilers,  machinery or any equipment  regardless of
whether policies of insurance are issued in connection therewith.

         Except as described above with respect to the powers of each entity and
below  with  respect  to  certain  other  matters,   HSB  Group's   Articles  of
Incorporation  and Bylaws and the Company's Charter and Bylaws are substantially
similar.   A  copy  of  HSB  Group's  Articles  of  Incorporation   and  Bylaws,
substantially  in the form to be in effect  immediately  prior to the  Effective
Time are attached hereto as Appendices C and D, respectively.

         Certain  differences  between the rights of holders of HSB Group Common
Stock  and HSB  Group  Preferred  Stock  are  summarized  below.  Some of  these
differences arise out of the passage of the CBCA effective January 1, 1997 which
replaced  the  Connecticut  Stock  Corporation  Act  ("CSCA").  According to the
official  legislative  history,  the  provisions of the CBCA were designed to be
consistent  with  current  business  practices  and replace many of the outmoded
rules contained in the CSCA. The current provisions of the Company's Charter are
grandfathered  (i.e.,  the  existing  provisions  remain in effect  despite  any
conflict with the CBCA) under the new law.  However,  HSB Group was incorporated
after January 1, 1997 and its articles of


                                      -20-
<PAGE>

incorporation  and bylaws were drafted in accordance  with the provisions of the
CBCA.  Although the Company  believes  that the CBCA is more modern and complete
than the CSCA,  the timing and  purpose of the Share  Exchange is not related to
the adoption of the CBCA by the Connecticut legislature.

Dividends.  Under  the  CBCA,  a  corporation  may not  make a  distribution  to
shareholders if, after giving effect thereto,  the corporation would not be able
to pay its debts as they  become  due in the usual  course  of  business  or the
corporation's  total assets would be less than the sum of its total  liabilities
plus,  unless the articles of incorporation  permit  otherwise,  the amount that
would be needed, if any, to satisfy the preferential  rights upon dissolution of
shareholders  whose  preferential  rights are  superior to those  receiving  the
distribution.   Additionally,   under  Connecticut  insurance  laws  (which  are
applicable to the Company,  but not HSB Group) an insurance company cannot pay a
dividend,  without prior approval of the Insurance  Commissioner,  which exceeds
its earned surplus,  as determined  under  statutory  accounting  practices,  or
which,  when combined with that of other dividends or distributions  made within
the prior twelve months, exceeds the greater of (i) ten percent of the company's
surplus with respect to policyholders as of the December 31st last preceding; or
(ii) the net income for the twelve-month period ending on the December 31st last
preceding.  Under Connecticut  insurance laws at least ten days' prior notice of
any  dividend  or  distribution  is  required  to  be  given  to  the  Insurance
Commissioner.  The  Commissioner  may order that such dividends or distributions
not be paid if  payment  would  cause  the  insurance  company's  surplus  to be
inadequate  or could lead to a  hazardous  financial  condition.  Following  the
Restructuring,  it is anticipated that at least for the foreseeable  future, the
principal  source of earnings  for HSB Group will be the  dividends  paid by the
Company  which  will  continue  to be subject  to the  regulatory  restrictions,
including prior approval in some cases, described above.

   
Size of the Board of Directors.  The CSCA  provided  that a  corporation  have a
minimum of three  directors.  The statute  further  provided  that the number of
directorships could be fixed by the bylaws of the corporation or that the bylaws
could specify a minimum and maximum number of directorships,  with the number of
directorships  at any given time to be fixed by a resolution of the stockholders
or the directors.


                                      -21-
<PAGE>

The CBCA  requires a minimum of one  director  and  provides  that the number of
directorships  can be specified in, or fixed in accordance with, the articles of
incorporation  or bylaws of the  corporation.  In accordance  with the CSCA, the
Company's  Charter and Bylaws  provide  that the board shall  consist of no less
than nine nor more than  fourteen  directors,  the exact number to be determined
from time to time by  resolution  adopted by a majority  of the  directors.  The
Articles  of  Incorporation  and  Bylaws  of HSB Group  adopt the more  flexible
approach  permitted by the CBCA and provide that the number of directors will be
determined  from  time to time by  resolution  of a  majority  of the  Board  of
Directors.  The number of directors at the Effective  Time of the  Restructuring
will be the same number of directors  serving on the Company's Board immediately
prior to the Restructuring.
    

Indemnification.  The scope of  indemnification  of directors under the CSCA was
mandatory and could not be varied by the certificate of incorporation, bylaws or
agreement.  Therefore,  the Company's Charter and Bylaws are silent on the scope
of indemnification.  As permitted by the CSCA, the Company has secured insurance
which provides broader  indemnification of directors than was required under the
CSCA. Under the CBCA, there is more limited  mandatory  indemnification  and the
permissive  scope  of  indemnification  is  defined.  HSB  Group's  Articles  of
Incorporation  provide  that the  corporation  will  indemnify  directors to the
fullest  extent  permitted  under the law.  The CBCA  permits a  corporation  to
indemnify its directors against  liability  (including  judgments,  settlements,
penalties and fines) if such individual acted in good faith, reasonably believed
that his or her conduct was in the corporation's best interests and, in the case
of criminal  proceedings,  had no reasonable cause to believe his or her conduct
was  unlawful.  In a  proceeding  by or in the  right  of the  corporation,  the
corporation may indemnify a director only for reasonable  expenses,  and may not
indemnify a director who is adjudged liable to the corporation.  Indemnification
of such  expenses is mandatory  when a director is  successful in the defense of
any  proceeding.  The CBCA also permits a  corporation  to pay or reimburse  the
reasonable  expenses incurred by a director who is a party to an action, suit or
proceeding (whether civil, criminal, administrative or investigative) in advance
of the final  disposition of such action,  suit or proceeding  provided that (i)
such  director  affirms in writing  such

                                      -22-
<PAGE>

director's  good faith  belief that the standard of conduct  required  under the
statute has been met;  (ii) such  director  furnishes a written  undertaking  to
repay the corporation if it is ultimately  determined that such standard has not
been met;  and (iii) a  determination  is made  pursuant to the statute that the
facts then known would not preclude indemnification under the statute. Provision
for such  advance of  expenses  in  accordance  with the CBCA is included in HSB
Group's  Articles of  Incorporation.  As permitted  by the CBCA,  HSB Group will
continue to secure insurance which provides broader indemnification of directors
than is required under the CBCA.

   
Effective Time of Share Exchange
- --------------------------------

         The  Effective  Time of the  Share  Exchange  will be the time that the
Articles  of Share  Exchange  relating  to the Share  Exchange  are filed  under
Section 33-819 of the Connecticut  General  Statutes with the Secretary of State
of Connecticut.  Assuming  approval of the Share Exchange by stockholders of the
Company  and the  satisfaction  or waiver of the other  conditions  to the Share
Exchange,  it is presently  anticipated that the Articles of Share Exchange will
be filed as soon as practicable after the special meeting.
    

Amendment, Waiver or Termination
- --------------------------------

         The  Board  of  Directors  of the  Company  and HSB  Group,  authorized
committees of such boards,  or  authorized  directors or officers of the Company
and HSB Group may amend or modify the Agreement and Plan of Share  Exchange,  or
waive certain of the conditions  contained therein,  at any time before or after
adoption of such agreement by the stockholders of the Company,  although no such
amendment,  modification  or waiver may affect the rights of any  stockholder of
the Company in any manner that is, in the  judgment of the Board of Directors of
the Company,  materially adverse to such stockholder. In addition, the Boards of
Directors of the Company or HSB Group or  authorized  committees of such boards,
may terminate  the  Agreement and Plan of Share  Exchange at any time before the
Effective  Time,  whether  before or after adoption by the  stockholders  of the
Company.

                                      -23-
<PAGE>

Certain Federal Income Tax Consequences
- ---------------------------------------

         It is a condition to the  consummation  of the  Restructuring  that the
Company  receive an opinion of Skadden,  Arps,  Slate,  Meagher & Flom LLP,  tax
counsel to the Company,  in form and substance  reasonably  satisfactory  to the
Company,  dated as of the Effective Time, and based upon facts,  representations
and assumptions set forth in such opinion which are consistent with the state of
facts existing as of the Effective Time,  substantially  to the effect that, for
federal  income  tax  purposes  (i) no gain or loss  will be  recognized  by the
Company  as a  result  of the  Share  Exchange;  (ii) no  gain  or loss  will be
recognized by the stockholders of the Company on the exchange of their shares of
Company  Common  Stock  solely for shares of HSB Group Common Stock or shares of
Company  Preferred  Stock for share of HSB Group Preferred Stock pursuant to the
Share Exchange;  (iii) the tax basis of the shares of HSB Group Common Stock and
HSB Group Preferred Stock received by stockholders in the Share Exchange will be
the same as the tax basis of the  shares of  Company  Common  Stock and  Company
Preferred Stock surrendered in exchange therefor; and (iv) the holding period of
the shares of HSB Group Common Stock and HSB Group  Preferred  Stock received in
the Share  Exchange  will include the period  during which the shares of Company
Common  Stock and  Company  Preferred  Stock were held as capital  assets at the
Effective Time.

         Stockholders  should  consult  their own tax  advisors  with respect to
specific tax effects to them of the Share Exchange under federal,  state,  local
and foreign tax laws.

Stock Plans and Other Employee Benefit Plans
- --------------------------------------------

         At the Effective  Time,  the Company's  1985 Stock Option Plan and 1995
Stock Option Plan will be assumed by HSB Group and, except as follows,  will not
be changed as a result of the Share Exchange.  The options and rights to acquire
Company Common Stock under such plans which are  outstanding at, and immediately
prior to, the Effective Time will be converted into options or rights to acquire
the same number of shares of HSB Group  Common Stock at the same price per share
and on the same terms and conditions as in effect immediately prior to the Share
Exchange,  and any  restricted  shares  awarded under such plans as to which the
restrictions  have not lapsed as of the  Effective  Time of the Share 


                                      -24-
<PAGE>

Exchange,  will be converted  into the same number of shares of HSB Group Common
Stock carrying identical restrictions.  Any future options, rights or restricted
shares awarded under such plans will be for shares of HSB Group Common Stock.

         At  the  Effective  Time,  the  Company  Retirement  Plan,  the  Excess
Retirement Plan, the Thrift  Incentive Plan, the  Supplemental  Thrift Plan, the
Leveraged Employee Stock Ownership Plan, the Long-Term and Short-Term  Incentive
Plans,  the Directors  Stock and Deferred  Compensation  Plan, the Service Award
Plan, employment agreements and related trust agreement,  and all other employee
benefit  plans or programs of the Company,  will be assumed by HSB Group.  These
plans,  agreements  and programs will remain in effect in accordance  with their
terms  and,  except as  follows,  will not be  changed  as a result of the Share
Exchange.  It is expected  that certain of such plans,  agreements  and programs
will be amended,  where  appropriate,  to provide for  participation  by certain
employees of HSB Group, and that other technical and conforming  amendments will
be made,  including changing references in such plans,  agreements and programs,
from  Company  Common  Stock to HSB  Group  Common  Stock,  to  reflect  the new
corporate structure resulting from the Restructuring.

   
         Approval  of the Share  Exchange  by the  Company's  stockholders  will
constitute approval,  if and to the extent such approval may be required, of the
assumption of, and amendment to, the plans,  agreements and programs  identified
or otherwise referred to in this section.
    

Automatic Dividend Reinvestment Plan (DRP) and Payroll Investment Plan (PIP)
- ----------------------------------------------------------------------------

   
         Assuming the Share Exchange is approved, HSB Group expects to adopt and
maintain a DRP and PIP  substantially  similar to the  Company's  DRP and PIP so
that  holders of HSB Group  Common  Stock may, if they so elect,  reinvest  cash
dividends and certain voluntary cash amounts (or payroll  deductions in the case
of the PIP) in  shares  of HSB  Group  Common  Stock.  It is  expected  that the
Company's  DRP and PIP will  terminate  and that  HSB  Group's  DRP and PIP will
become  effective at the Effective  Time of the Share  Exchange.  If the Company
declares a cash dividend  before the  Effective  Time which is payable after the
Effective  Time,  such


                                      -25-
<PAGE>

dividends paid to  participants  in HSB Group's DRP or PIP will be reinvested in
shares of HSB Group Common Stock.
    

Trading of HSB Group Common Stock
- ---------------------------------

   
         HSB Group will apply to have HSB Group  Common  Stock listed on the New
York Stock Exchange.  If the Share Exchange is approved,  it is anticipated that
the shares of HSB Group Common Stock  received by the holders of Company  Common
Stock will be so listed,  under the trading symbol HSB, as of the Effective Time
of the Share  Exchange.  As a result,  it is  anticipated  that the  holders  of
Company Common Stock will be able to trade their shares without interruption.
    

Transfer and Dividend Disbursement Agent; Exchange of Stock Certificates
- ------------------------------------------------------------------------

         HSB Group has  appointed The First  National  Bank of Boston,  P.O. Box
644, Boston  Massachusetts  02102-0644,  as its transfer and dividend disbursing
agent.

   
         If the Share  Exchange  is  approved  and  consummated,  it will not be
necessary  for  holders  of  Company  Common  Stock  to  surrender  their  stock
certificates  for new  certificates  representing  their HSB Group Common Stock.
Certificates  formerly  representing  shares of  Company  Common  Stock  will be
replaced by  certificates  representing  HSB Group  Common  Stock only when such
certificates  are  submitted to HSB Group's  transfer  agent with a request that
such  certificates  be so replaced or when such  certificates  are presented for
transfer.
    

Dissenters' Appraisal Rights
- ----------------------------

         The Company's  stockholders  have the right,  under Sections  33-855 to
33-872,  inclusive,  of the CBCA to elect to object to the  Share  Exchange  and
demand  payment for the "fair value" (as defined in Section  33-855 of the CBCA)
of their  Company  Common Stock in  accordance  with the  provisions  of Section
33-863 of the CBCA.

         Stockholders  of the Company who object to the Share  Exchange  will be
entitled, if the Share Exchange is consummated,  to receive a cash payment equal
to the fair


                                      -26-
<PAGE>

value of their shares. Fair value is to be determined as of the day prior to the
Effective Date of the Share Exchange.

         The  following  is a summary of the  procedures  to be  followed  under
Sections  33-860  through  33-868 of the CBCA,  the text of which is attached to
this  Prospectus  and Proxy  Statement  as Appendix B and which is  incorporated
herein by reference. This summary does not purport to be a complete statement of
such  provisions  of the CBCA and is  qualified  in its entirety by reference to
Sections 33-855 through 33-872, inclusive, of the CBCA.

         To be entitled to the cash payment,  a  stockholder  who objects to the
Share  Exchange  and  wishes to  assert  dissenters'  rights  must  satisfy  the
following  conditions:  i) the  stockholder  must deliver  written notice to the
Company  before the vote is taken of his or her intent to demand payment for his
or her shares if the proposed  action is  effectuated;  and ii) the  stockholder
must not vote his or her shares in favor of the Share Exchange.

         If the Share Exchange is approved by the Company's  stockholders at the
June 23, 1997 Special Meeting,  written notice (a "Dissenters'  Notice") will be
sent to all stockholders who satisfied the conditions described in the preceding
paragraph.  Such  notice  will be sent no later than ten days after the date the
Share Exchange is approved and shall:  i) state where the payment demand must be
sent and where and when  certificates  must be deposited;  ii) inform holders of
uncertificated  shares to what extent  transfer of the shares will be restricted
after the payment demand is received;  iii) supply a form for demanding  payment
that includes the date of the first  announcement  to news media or stockholders
of the  terms of the Share  Exchange  and  requires  that the  person  asserting
dissenters'  rights  certify  whether  or  not  he or  she  acquired  beneficial
ownership  of the  shares  before  that  date;  iv)  set a  date  by  which  the
corporation  must  receive the payment  demand,  which date may not be less than
thirty  nor more  than  sixty  days  after  the date the  Dissenters'  Notice is
delivered in accordance with this paragraph.

         A  stockholder  who is sent a Dissenters'  Notice must demand  payment,
certify whether he or she acquired beneficial ownership of the shares before the
date of the first announcement to news media or stockholders of the 


                                      -27-
<PAGE>

terms of the Share Exchange,  and deposit his or her  certificates in accordance
with the terms of the  Dissenters'  Notice.  The stockholder who demands payment
and deposits his or her share  certificates as described above retains all other
rights of a stockholder until these rights are canceled or modified by the Share
Exchange.  A stockholder who does not demand payment or deposit his or her share
certificates where required,  each by the date set in the Dissenters' Notice, is
not entitled to payment for his or her shares under  Sections  33-855 to 33-872,
inclusive of the CBCA.

         As soon as the Share Exchange is effected, or upon receipt of a payment
demand  (provided that the Company  determines  that the stockholder has met the
beneficial ownership requirements outlined above), the Company shall pay to each
stockholder who complied with the conditions described above an amount which the
Company estimates to be the fair value of the shares, plus accrued interest. The
payment shall be accompanied  by: i) the Company's  balance sheet as of December
31, 1996, an income  statement for 1996, a statement of changes in stockholders'
equity for 1996 and the latest available interim financial  statements,  if any;
ii) a statement of the Company's estimate of the fair value of the shares;  iii)
an  explanation of how the interest was  calculated;  and iv) a statement of the
stockholder's right to demand payment and a copy of Sections 33-855 to 33-872 of
the CBCA.

         If the Company  does not effect the Share  Exchange  within  sixty days
after the date set for demanding payment and depositing share certificates,  the
Company  shall  return the  deposited  certificates  and  release  the  transfer
restrictions  imposed on  uncertificated  shares.  If after returning  deposited
certificates and releasing transfer  restrictions,  the Company  effectuates the
Share  Exchange,  it must send a new  Dissenters'  Notice and repeat the payment
demand procedure.

         If the Company elects to withhold payment from a stockholder because he
or she was not the  beneficial  owner of the shares before the date set forth in
the Dissenters' Notice, the Company shall estimate the fair value of the shares,
plus accrued interest,  and shall pay this amount to each dissenting stockholder
who agrees to accept it. The Company must send with the offer an  explanation of
the


                                      -28-
<PAGE>

estimate  of fair  value of the  shares,  an  explanation  of how  interest  was
calculated and a statement of the stockholder's right to demand payment.

         If a dissenting  stockholder  does not agree with the Company's  offer,
the stockholder  must notify the Company of its own estimate of the value of the
shares within thirty days of the Company's offer.

         If demand for payment  remains  unsettled,  the Company may  commence a
court appraisal  proceeding  within sixty days after the payment demand is made.
If the Company does not commence the proceeding  within the sixty-day period, it
must pay each dissenting  stockholder  whose demand remains unsettled the amount
such stockholder demanded.

         Costs and expenses of any such  proceeding  will be  determined  by the
court and will be  assessed  against the Company if it failed to comply with the
requirements of Sections 33-860 to 33-868,  inclusive,  of the CBCA and can also
be assessed against either party if it is determined that such party acted in an
arbitrary or vexatious  manner or not in good faith. If the court finds that the
services of counsel for any dissenting  stockholder were of substantial  benefit
to other similar dissenting  stockholders,  and that the fees for those services
should not be assessed against the Company, the court may award to these counsel
reasonable  fees  to be  paid  out  of the  amounts  awarded  to the  dissenting
stockholders who were benefited.

         A  stockholder's  failure  to  vote  on the  Share  Exchange  will  not
constitute a waiver of his or her  dissenters'  rights under Sections  33-855 to
33-872,  inclusive of the CBCA.  However,  a vote in favor of the Share Exchange
will  constitute a waiver of this right,  and a vote against the Share  Exchange
itself will not satisfy the requirements  with respect to written  objection and
written demand or the other requirements  summarized above of the CBCA necessary
to perfect dissenters' appraisal rights.

         Failure by a  stockholder  to follow  the steps  required  by  Sections
33-855 to 33-872,  inclusive,  of the CBCA for perfecting  dissenters' appraisal
rights will result in the loss of those  rights.  An objecting  stockholder  who
does not perfect his or her right to appraisal through  compliance


                                      -29-
<PAGE>

with the CBCA will have the rights  specified in the Agreement and Plan of Share
Exchange.

         All  written  communications  from  stockholders  with  respect  to the
exercise of  appraisal  rights  should be mailed to The  Hartford  Steam  Boiler
Inspection and Insurance Company, One State Street, P.O. Box 5024, Hartford,  CT
06102-5024; Attention:
Corporate Secretary.

         In view of the  complexities  of the foregoing  provisions of the CBCA,
Company stockholders who are considering  pursuing dissenters'  appraisal rights
may wish to consult legal counsel.

Financial Statements
- --------------------

   
         Complete pro forma and comparative  financial information regarding the
Company and its  consolidated  subsidiaries  giving effect to the Share Exchange
has not been included herein because immediately following the effective time of
the Share Exchange,  the consolidated financial statements for HSB Group will be
substantially the same as the consolidated  financial  statements of the Company
immediately  prior to the Share Exchange.  Had the Share Exchange taken place at
March 31, 1997,  consolidated  equity for HSB Group shareholders would have been
$x million.
    

Dividends and Market Price Ranges
- ---------------------------------

         The  following  table  sets  forth the high and low  prices of  Company
Common  Stock for the  periods  indicated.  The table also sets forth  dividends
declared on Company Common Stock for such periods.
                                                        Dividends Per Share
Calendar Year                        High    Low        of Common Stock
- -----------------------------------------------------------------------
       

1995 First Quarter                  $43 3/4 $39 1/4     $.55
         Second Quarter              45 7/8  41 5/8      .55
         Third Quarter               49 3/8  42 5/8      .57
         Fourth Quarter              50 3/8  45 3/8      .57

1996 First Quarter                  $52 1/2 $48         $.57
         Second Quarter              50 3/4  46          .57
         Third Quarter               49      43 1/4      .57
         Fourth Quarter              47 1/8  42 3/4      .57

   


                                      -30-
<PAGE>

1997 First Quarter                  $47 5/8 $44 5/8     $.57
         Second Quarter (through
         May __, 1997)              _______ _______       __

         On December 30, 1996,  General  Reinsurance  Corporation  exchanged its
2,000 shares of Series A Cumulative  Preferred  Stock of EIG, Co., the Company's
wholly owned subsidiary, for 2,000 shares of Company Preferred Stock. On January
27, 1997,  the Company's  Board  declared a dividend in the amount of $54.17 per
share on such shares which was paid on January 31,  1997.  On March 24, 1997 the
Board  declared the regular  quarterly  dividend of $162.50 per share on Company
Preferred Stock payable on April 30, 1997.

     The last reported sales price of Company Common Stock on the New York Stock
Exchange  on May x, 1997 was $x per  share.  The last  reported  sales  price of
Company  Common  Stock on the Record Date was $x per share.  At the Record Date,
the x outstanding  shares of Company Common Stock were held by x stockholders of
record.
    

Legal Opinions
- --------------

   
         Certain  legal  matters  relating to the  issuance of HSB Group  Common
Stock and HSB Group  Preferred  Stock will be passed  upon by Robert C.  Walker,
Senior Vice President and General Counsel of the Company.
    

Experts
- -------

   
         The consolidated  financial statements  incorporated in this Prospectus
and Proxy Statement by reference to the Company's Annual Report on Form 10-K for
the year ended  December 31, 1996 have been so  incorporated  in reliance on the
report of Coopers & Lybrand L.L.P., independent public accountants, given on the
authority of said firm as experts in auditing and accounting.
    

Stockholder Vote Required for Approval
- --------------------------------------

         Approval of the Share  Exchange  requires the approval of two-thirds of
all  outstanding  shares of Company  Common  Stock and Company  Preferred  Stock
voting together as a single class.

                                      -31-
<PAGE>

   
        The Board of Directors unanimously recommends a vote FOR the proposal to
approve the Share Exchange.
    

                       DEADLINE FOR STOCKHOLDER PROPOSALS

   
        As currently  contemplated,  the Share  Exchange,  if approved,  will be
effectuated  in the third  quarter of 1997.  Therefore,  it is expected that HSB
Group will be conducting the 1998 Annual Meeting of  Stockholders.  Stockholders
who wish to  submit  written  proposals  for  possible  inclusion  in the  proxy
statement  prepared in connection  with such meeting must make certain that they
are  received no later than October 30,  1997.  Proposals  should be sent to the
Corporate Secretary, HSB Group, Inc., One State Street, P.O. Box 5024, Hartford,
Connecticut 06102-5024.
    

                                  OTHER MATTERS

   
        Representatives of the Company's independent public accountants, Coopers
& Lybrand L.L.P.,  will be present at the Special Meeting to make a statement if
they wish to do so, and will be  available to respond to  appropriate  questions
raised by stockholders.

        The Company  reserves  the right to adjourn  the Special  Meeting one or
more times and to continue to solicit proxies, if insufficient affirmative votes
are present in person or by proxy to approve the Share Exchange.

        The Company's annual report on Form 10-K for the year ended December 31,
1996 and  quarterly  report on Form 10-Q for the quarter  ended March 31,  1997,
which  have  been  filed  with  the  Securities  and  Exchange  Commission,  are
incorporated by reference in this Prospectus and Proxy Statement.  These reports
contain   information   about  the  Company  and  its   subsidiaries  and  their
consolidated  operations  and financial  condition.  These  reports,  except for
exhibits,  will be furnished without charge to stockholders upon written request
to the Corporate  Secretary,  The Hartford Steam Boiler Inspection and Insurance
Company, P.O. Box 5024, One State Street, Hartford Connecticut, 06102-5024.
    



                                      -32-
<PAGE>


                      By Order of the Board of Directors,

                      /s/ R. K. Price
                      R. K. PRICE
                      Corporate Secretary

                                                      Printed on recycled paper



                                      -33-
<PAGE>


                                                                    Appendix A

                      AGREEMENT AND PLAN OF SHARE EXCHANGE
                                       OF
           THE HARTFORD STEAM BOILER INSPECTION AND INSURANCE COMPANY

                                       AND
                                 HSB GROUP, INC.


     This  Agreement  and Plan of Share  Exchange (the  "Agreement"  or "Plan of
Exchange")  is dated  and  executed  as of the 19th day of March,  1997,  by and
between  THE  HARTFORD  STEAM  BOILER  INSPECTION  AND  INSURANCE   COMPANY,   a
Connecticut  corporation  (the  "Insurance  Company"),  and HSB GROUP,  INC.,  a
Connecticut corporation (the "Holding Company").

         1.       The name of the Insurance Company is The Hartford
                  Steam Boiler Inspection and Insurance  Company,  a Connecticut
                  corporation, and the name of the Holding Company is HSB Group,
                  Inc., a Connecticut Corporation.

   
         2.       The designation and number of authorized and
                  outstanding  shares of the Holding  Company are: 18,000 shares
                  of common stock (the "Holding Company Common Shares"), each of
                  which is  entitled  to one vote and 100  shares  of which  are
                  issued and outstanding and 2,000 authorized  preferred shares,
                  none of which are issued and outstanding. Immediately prior to
                  the Effective Time (as hereinafter  defined),  the designation
                  and number of  authorized  shares of the Holding  Company will
                  be: (a) 50,000,000  Holding  Company  Common  Shares,  each of
                  which will have attached  thereto a Right (as defined  below);
                  and (b) 500,000 shares of preferred  stock,  no par value (the
                  "Holding Company Preferred Shares"), of which (i) 250,000 will
                  be  designated  as  Series  A Junior  Participating  Preferred
                  Shares(the "Holding Company Junior Preferred Shares"), each of
                  which will be entitled to 200 votes,  voting together with the
                  Holding  Company  Common  Shares,   and  (ii)  2,000  will  be
                  designated as Series B Convertible



                                      A-1
<PAGE>


                    Preferred Shares (the "Holding Company Convertible Shares"),
                    each of which will be entitled to 199 votes, voting together
                    with the Holding Company Common Shares,  and with respect to
                    certain matters voting as a separate class.

                    The  designation  and number of authorized  and  outstanding
                    shares of the Insurance  Company are: (a) 50,000,000  shares
                    of common stock, no par value (the "Insurance Company Common
                    Shares"),  each of which is entitled to one vote, 20,043,608
                    shares of which  were,  as of March  19,  1997,  issued  and
                    outstanding and 29,956,392 shares of which were, as of March
                    19, 1997,  held as  authorized  and  unissued  shares of the
                    Insurance  Company,  and which in each  case  have  attached
                    thereto  a  Right;  and  (b)  500,000  authorized  preferred
                    shares,  no par  value  (the  "Insurance  Company  Preferred
                    Shares"),  of which  (i)  250,000  are  designated  Series A
                    Junior   Participating   Preferred  Shares  (the  "Insurance
                    Company Junior Preferred  Shares"),each of which is entitled
                    to 200 votes,  voting  together with the  Insurance  Company
                    Common Shares,  and none of which is  outstanding,  and (ii)
                    2,000  shares  are   designated   as  Series  B  Convertible
                    Preferred   Shares  (the  "Insurance   Company   Convertible
                    Preferred Shares"),  each of which is entitled to 199 votes,
                    voting  together with the Insurance  Company  Common Shares,
                    and with  respect  to certain  matters  voting as a separate
                    class,  and all of which were, as of March 19, 1997,  issued
                    and outstanding.

                    For  adoption  and  approval,  this Plan of  Exchange  shall
                    require  the  approval  of  two-thirds  of  all  outstanding
                    Insurance   Company  Common  Shares  and  Insurance  Company
                    Convertible  Preferred  Shares  voting  together as a single
                    class.
    

         3.       Upon the time of filing of a Certificate of
                  Exchange in connection  with the share  exchange  contemplated
                  hereby (the "Share  Exchange")  with the Secretary of State of
                  the State of Connecticut (the "Effective Time"):

                    (a) each outstanding Insurance Company Common

                                      A-2
<PAGE>

                    Share (and associated Right) and each outstanding  Insurance
                    Company  Convertible  Preferred  Share shall by operation of
                    law and without  further action be exchanged for one Holding
                    Company Common Share (and associated  Right) and one Holding
                    Company Convertible Preferred Share,  respectively,  subject
                    to dissenting  stockholders' rights under Sections 33-855 to
                    33-872,  inclusive of the Connecticut  Business  Corporation
                    Act (the "CBCA"); and

                    (b)  each   Holding   Company   Common   Share   outstanding
                    immediately  prior to the  Effective  Time shall be canceled
                    and shall be  restored  to the status of an  authorized  but
                    unissued Holding Company Common Share;

   
                  so that,  immediately  after the  Effective  Time,  all of the
                  outstanding  Insurance  Company  Common  Shares and  Insurance
                  Company  Convertible  Preferred  Shares  will  be  held by the
                  Holding  Company,  and all of the outstanding  Holding Company
                  Common Shares and Holding Company Convertible Preferred Shares
                  will be held by the  owners of the  Insurance  Company  Common
                  Shares and Insurance  Company  Convertible  Preferred  Shares,
                  respectively,  that were outstanding  immediately prior to the
                  Effective Time.
    

         4.       By the Holding Company's having executed this
                  Agreement   and  by  the   subsequent   consummation   of  the
                  transactions  enumerated  herein, the Holding Company shall be
                  deemed to have approved the  following  plans of the Insurance
                  Company  (collectively,  the "Plans"): the 1985 and 1995 Stock
                  Option Plans; the Retirement Plan; the Excess Retirement Plan;
                  the  Thrift  Incentive  Plan;  the  Leveraged  Employee  Stock
                  Ownership Plan; the Long-Term and Short-Term  Incentive Plans;
                  the  Directors  Stock  and  Deferred  Compensation  Plan;  the
                  Service  Award  Plan;  employment  agreements;  and all  other
                  employee  benefit plans or programs of the Insurance  Company;
                  and, by virtue of the Share Exchange and without any action on
                  the part of the  participants  in the  Plans,  each  Insurance
                  Company


                                      A-3
<PAGE>

                  Common  Share  and each  option,  unit or right  then
                  issued and outstanding under the Plans shall be converted into
                  an  equivalent  number of  shares,  options,  units or rights,
                  respectively,  of Holding  Company Common Shares,  at the same
                  per share price,  if  applicable,  and upon the same terms and
                  subject to the same conditions as applicable immediately prior
                  to the Effective Time to the relevant share,  option,  unit or
                  right,  and any restricted  shares awarded under such Plans as
                  to which the restrictions  have not lapsed as of the Effective
                  Time of the Share  Exchange,  will be converted  into the same
                  number of Holding  Company  Common Shares  carrying  identical
                  restrictions.

                  To the extent deemed necessary or appropriate, Holding Company
                  and Insurance Company shall make appropriate amendments to the
                  Plans to reflect the adoption  thereof as the Plans of Holding
                  Company  without  adverse  effect  upon any of the options and
                  shares outstanding under the Plans.

         5.       At the Effective Time, the Holding Company will
                  assume the Insurance Company's rights and obligations pursuant
                  to the Rights Agreement, dated as of November 28, 1988 between
                  the Insurance  Company and The First  National Bank of Boston,
                  as Rights Agent (the "Rights Agreement"), and by virtue of the
                  Share  Exchange,  and  without  any  action on the part of the
                  holder thereof,  each right (a "Right") to purchase  Insurance
                  Company  Junior  Preferred  Shares and to  otherwise  exercise
                  options, rights and privileges,  issued pursuant to the Rights
                  Agreement  shall  be  converted  into  and  become  a right to
                  purchase  an  equivalent  number or amount of Holding  Company
                  Junior Preferred  Shares, at the same exercise price, and upon
                  the  same  terms  and  subject  to  the  same  conditions,  as
                  applicable  immediately  prior  to the  Effective  Time and to
                  otherwise  exercise  options,   rights  and  other  privileges
                  pursuant to the Rights  Agreement.  The Holding  Company  will
                  reserve,  for  purposes  of  issuance  pursuant  to the Rights
                  Agreement, a number of Holding Company Junior Preferred Shares
                  equivalent to the number of Insurance Company Junior Preferred
                  Shares  reserved by the  Insurance


                                      A-4
<PAGE>

                  Company for such  purposes
                  immediately prior to the Effective Time.

         6.       At the Effective Time, each certificate evidencing
                  ownership of Insurance  Company Common Shares (and  associated
                  Rights) and Insurance  Company  Convertible  Preferred  Shares
                  outstanding  at the Effective  Time shall  automatically,  and
                  without  any  action  by the  holder  thereof,  be  deemed  to
                  evidence,  an  equivalent  number of  Holding  Company  Common
                  Shares (and associated Rights) or Holding Company  Convertible
                  Preferred   Shares,   respectively,   subject  to   dissenting
                  stockholders'   rights  under   Sections   33-855  to  33-872,
                  inclusive, of the CBCA.

   
        7.          At the  Effective  Time,  the  board  of  directors  and
                    executive officers of the Insurance Company shall become the
                    board of  directors  and  executive  officers of the Holding
                    Company. The executive officers of the Holding Company shall
                    be  identified  as follows:  Gordon W. Kreh,  President  and
                    Chief  Executive  Officer;   Saul  L.  Basch,   Senior  Vice
                    President, Treasurer and Chief Financial Officer; Michael L.
                    Downs,  Senior Vice President;  John J. Kelley,  Senior Vice
                    President;  William A. Kerr, Senior Vice President; R. Kevin
                    Price,  Senior  Vice  President  and  Corporate   Secretary;
                    William  Stockdale,  Senior  Vice  President;  and Robert C.
                    Walker, Senior Vice President and General Counsel.
    

        8.          Immediately  prior  to,  and at,  the  Effective  Time,  the
                    articles of incorporation of the Holding Company shall be as
                    set forth in Exhibit A to this Agreement.

         9.       The Plan of Exchange shall be conditioned upon:

                    (a) receipt of the  requisite  vote of  stockholders  of the
                    Insurance Company pursuant to Section 33-817 of the CBCA;

                    (b)  approval  or  exemption  of  the  insurance  regulatory
                    authorities in Connecticut, Texas, the


                                      A-5
<PAGE>

                    United  Kingdom  and  Hong  Kong,  or  any  other  consents,
                    approvals or  exemptions  necessary or  appropriate  for the
                    consummation  of the Share  Exchange,  in form and substance
                    satisfactory  to  the  Insurance  Company  and  the  Holding
                    Company;

                    (c) the effectiveness of a Registration  Statement under the
                    Securities  Act of 1933  relating  to the  common  stock  of
                    Holding  Company to be issued or  reserved  for  issuance in
                    connection with the Share Exchange;

                    (d) authorization for listing, subject to official notice of
                    issuance,   of  the  Holding   Company  Common  Shares  (and
                    associated Rights) on the New York Stock Exchange, Inc.;

                    (e) receipt of an opinion of Skadden, Arps, Slate, Meagher &
                    Flom LLP, tax counsel for the Insurance  Company,  regarding
                    certain  federal  income  tax   consequences  of  the  Share
                    Exchange;

                    (f)  receipt of an opinion of counsel as to the  legality of
                    the  Holding  Company  Common  Shares  and  Holding  Company
                    Convertible Preferred Shares issuable in connection with the
                    Share Exchange; and

                    (g) the absence of any injunction prohibiting or restricting
                    in any manner the Share  Exchange  or the  operation  of the
                    Holding  Company,  the  Insurance  Company  or any of  their
                    subsidiaries after consummation of such Share Exchange.

         10.      At any time before or after the adoption of this
                  Agreement by the stockholders of the Insurance  Company,  this
                  Agreement  may  be  amended  or  modified  or  certain  of its
                  conditions  waived by the boards of  directors  of the Holding
                  Company and the Insurance Company or authorized  committees of
                  such boards; provided that no such amendment,  modification or
                  waiver  may  affect  the  rights  of  any  stockholder  of the
                  Insurance Company in any manner that is materially  adverse to
                  such stockholder in the judgment of the board of



                                      A-6
<PAGE>


                  directors of the Insurance  Company.  The Plan of Exchange may
                  be  abandoned by either the  Insurance  Company or the Holding
                  Company,  notwithstanding the approval of the Plan of Exchange
                  by the  stockholders  of the  Insurance  Company,  at any time
                  prior to the  Effective  Time,  if for any reason the board of
                  directors of either of such corporations determines that it is
                  inadvisable  to proceed with the Plan of  Exchange,  including
                  without  limitation,  giving  consideration  to the  number of
                  shares for which dissenting  stockholders'  rights pursuant to
                  Sections  33-855 to 33-872,  inclusive,  of the CBCA have been
                  exercised and the cost to the Insurance Company thereof.

         11.      The Insurance Company and the Holding Company,
                  respectively,  shall take all such action as may be  necessary
                  or  appropriate  in order to effectuate the Share Exchange and
                  the other transactions  contemplated by this Agreement. If, at
                  any time  after the  Effective  Time,  any  further  action is
                  necessary  or  desirable  to carry  out the  purposes  of this
                  Agreement,  the officers and  directors of each of the Holding
                  Company and the Insurance  Company,  as of the Effective Time,
                  shall take such further action.

                                            THE HARTFORD STEAM BOILER
                                            INSPECTION AND INSURANCE COMPANY
                                            a Connecticut corporation


                                            By:  ______________________________
                                            Its:


                                            HSB GROUP, INC.
                                            a Connecticut corporation
                                            By:  ______________________________
                                            Its: ______________________________







                                      A-7
<PAGE>




                                                                    Appendix B

                     CONNECTICUT GENERAL STATUTES ANNOTATED
                             TITLE 33. CORPORATIONS
                       CHAPTER 601. BUSINESS CORPORATIONS
                          PART XIII. DISSENTERS' RIGHTS
               (A) RIGHT TO DISSENT AND OBTAIN PAYMENT FOR SHARES

ss. 33-855. Definitions

 As used in sections 33-855 to 33-872, inclusive:

 (1) "Corporation" means the issuer of the shares held by a dissenter before the
corporate  action or the surviving or acquiring  corporation  by merger or share
exchange of that issuer.

 (2)  "Dissenter"  means a shareholder who is entitled to dissent from corporate
action under section  33-856 and who exercises that right when and in the manner
required by sections 33-860 to 33-868, inclusive.

 (3) "Fair value", with respect to a dissenter's shares,  means the value of the
shares  immediately before the effectuation of the corporate action to which the
dissenter objects, excluding any appreciation or depreciation in anticipation of
the corporate action.

 (4) "Interest"  means interest from the effective date of the corporate  action
until the date of payment, at the average rate currently paid by the corporation
on its  principal  bank loans or, if none,  at a rate that is fair and equitable
under all the circumstances.

 (5) "Record  shareholder"  means the person in whose name shares are registered
in the records of a corporation or the beneficial  owner of shares to the extent
of the rights granted by a nominee certificate on file with a corporation.

 (6)  "Beneficial  shareholder"  means the person who is a  beneficial  owner of
shares held in a voting trust or by a nominee as the record shareholder.

 (7) "Shareholder" means the record shareholder or the beneficial shareholder.

                                      B-1
<PAGE>

ss. 33-856. Right to dissent

 (a) A shareholder  is entitled to dissent from,  and obtain payment of the fair
value of his shares in the event of, any of the following corporate actions:

 (1) Consummation of a plan of merger to which the corporation is a party (A) if
shareholder  approval  is  required  for the  merger  by  section  33-817 or the
certificate  of  incorporation  and the  shareholder  is entitled to vote on the
merger or (B) if the  corporation is a subsidiary that is merged with its parent
under section 33-818;

 (2)  Consummation  of a plan of share  exchange to which the  corporation  is a
party as the  corporation  whose shares will be acquired,  if the shareholder is
entitled to vote on the plan;

 (3)  Consummation  of a sale or exchange of all, or  substantially  all, of the
property  of the  corporation  other  than in the  usual and  regular  course of
business,  if the  shareholder  is  entitled  to vote on the  sale or  exchange,
including a sale in  dissolution,  but not  including  a sale  pursuant to court
order or a sale for cash pursuant to a plan by which all or substantially all of
the net proceeds of the sale will be distributed to the shareholders  within one
year after the date of sale;

 (4) An  amendment of the  certificate  of  incorporation  that  materially  and
adversely  affects  rights in respect of a  dissenter's  shares  because it: (A)
Alters or abolishes a preferential right of the shares;  (B) creates,  alters or
abolishes a right in respect of redemption,  including a provision  respecting a
sinking fund for the  redemption  or  repurchase,  of the shares;  (C) alters or
abolishes a  preemptive  right of the holder of the shares to acquire  shares or
other securities;  (D) excludes or limits the right of the shares to vote on any
matter,  or to cumulate  votes,  other than a  limitation  by  dilution  through
issuance  of shares or other  securities  with  similar  voting  rights;  or (E)
reduces the number of shares owned by the  shareholder  to a fraction of a share
if the fractional  share so created is to be acquired for cash under section 33-
668; or

                                      B-2
<PAGE>

 (5) Any corporate action taken pursuant to a shareholder vote to the extent the
certificate of  incorporation,  bylaws or a resolution of the board of directors
provides  that  voting or  nonvoting  shareholders  are  entitled to dissent and
obtain payment for their shares.

 (b) Where the  right to be paid the  value of  shares  is made  available  to a
shareholder by this section, such remedy shall be his exclusive remedy as holder
of such shares  against the  corporate  transactions  described in this section,
whether or not he proceeds as provided in sections 33-855 to 33-872, inclusive.

ss. 33-857. Dissent by nominees and beneficial owners

 (a) A record shareholder may assert dissenters' rights as to fewer than all the
shares  registered  in his name only if he dissents  with  respect to all shares
beneficially  owned by any one person and notifies the corporation in writing of
the name and  address  of each  person on whose  behalf he  asserts  dissenters'
rights.  The rights of a partial  dissenter under this subsection are determined
as if the shares as to which he dissents and his other shares were registered in
the names of different shareholders.

 (b) A beneficial shareholder may assert dissenters' rights as to shares held on
his behalf only if: (1) He submits to the corporation  the record  shareholder's
written  consent  to  the  dissent  not  later  than  the  time  the  beneficial
shareholder  asserts  dissenters' rights; and (2) he does so with respect to all
shares of which he is the  beneficial  shareholder or over which he has power to
direct the vote.

ss.ss. 33-858, 33-859. Reserved for future use

                (B) PROCEDURE FOR EXERCISE OF DISSENTERS' RIGHTS

ss. 33-860. Notice of dissenters' rights

(a) If proposed  corporate action creating  dissenters' rights under section 33-
856 is submitted to a vote at a shareholders'  meeting, the meeting notice shall
state that  shareholders  are or may be  entitled to assert  dissenters'  rights
under sections 33-855 to 33-872, inclusive, and be accompanied by a copy of said
sections.

                                      B-3
<PAGE>

 (b) If corporate  action  creating  dissenters'  rights under section 33-856 is
taken without a vote of  shareholders,  the corporation  shall notify in writing
all shareholders entitled to assert dissenters' rights that the action was taken
and send them the dissenters' notice described in section 33-862.

ss. 33-861. Notice of intent to demand payment

 (a) If proposed corporate action creating  dissenters' rights under section 33-
856 is submitted to a vote at a shareholders'  meeting, a shareholder who wishes
to assert  dissenters'  rights (1) shall deliver to the  corporation  before the
vote is taken written  notice of his intent to demand  payment for his shares if
the proposed action is effectuated and (2) shall not vote his shares in favor of
the proposed action.

 (b) A shareholder  who does not satisfy the  requirements  of subsection (a) of
this section is not entitled to payment for his shares under sections  33-855 to
33-872, inclusive.

ss. 33-862. Dissenters' notice

 (a) If proposed corporate action creating  dissenters' rights under section 33-
856 is authorized at a shareholders'  meeting,  the corporation  shall deliver a
written dissenters' notice to all shareholders who satisfied the requirements of
section 33-861.

 (b) The  dissenters'  notice  shall be sent no later  than ten days  after  the
corporate action was taken and shall:

 (1) State where the payment demand must be sent and where and when certificates
for certificated shares must be deposited;

 (2) Inform  holders of  uncertificated  shares to what  extent  transfer of the
shares will be restricted after the payment demand is received;

 (3) Supply a form for  demanding  payment  that  includes the date of the first
announcement  to news  media or to  shareholders  of the  terms of the  proposed
corporate  action and  requires  that the person  asserting  dissenters'  rights

                                      B-4
<PAGE>

certify  whether or not he acquired  beneficial  ownership of the shares  before
that date;

 (4) Set a date by which the corporation must receive the payment demand,  which
date may not be fewer  than  thirty  nor more than sixty days after the date the
subsection (a) of this section notice is delivered; and

 (5) Be accompanied by a copy of sections 33-855 to 33-872, inclusive.

ss. 33-863. Duty to demand payment

    (a) A shareholder sent a dissenters' notice described in section 33-862 must
demand payment,  certify whether he acquired beneficial  ownership of the shares
before the date required to be set forth in the  dissenters'  notice pursuant to
subdivision  (3) of subsection (b) of said section and deposit his  certificates
in accordance with the terms of the notice.

 (b) The  shareholder  who demands  payment and deposits his share  certificates
under  subsection (a) of this section  retains all other rights of a shareholder
until these  rights are  cancelled  or  modified  by the taking of the  proposed
corporate action.

 (c) A shareholder who does not demand payment or deposit his share certificates
where required,  each by the date set in the dissenters' notice, is not entitled
to payment for his shares under sections 33-855 to 33-872, inclusive.

ss. 33-864. Share restrictions

   (a) The corporation may restrict the transfer of  uncertificated  shares from
the date the demand for their payment is received  until the proposed  corporate
action is taken or the restrictions released under section 33-866.

 (b) The person for whom  dissenters'  rights are asserted as to  uncertificated
shares  retains  all other  rights  of a  shareholder  until  these  rights  are
cancelled or modified by the taking of the proposed corporate action.


                                      B-5
<PAGE>

ss. 33-865. Payment

 (a) Except as provided in section  33-867,  as soon as the  proposed  corporate
action is taken, or upon receipt of a payment demand,  the corporation shall pay
each  dissenter  who  complied  with section  33-863 the amount the  corporation
estimates to be the fair value of his shares, plus accrued interest.

 (b) The payment shall be accompanied by: (1) The corporation's balance sheet as
of the end of a fiscal year ending not more than sixteen  months before the date
of  payment,  an income  statement  for that  year,  a  statement  of changes in
shareholders'  equity for that year and the latest available  interim  financial
statements,  if any; (2) a statement of the  corporation's  estimate of the fair
value of the shares; (3) an explanation of how the interest was calculated;  (4)
a statement of the  dissenter's  right to demand  payment under section 33- 860;
and (5) a copy of sections 33-855 to 33-872, inclusive.

ss. 33-866. Failure to take action

 (a) If the  corporation  does not take the  proposed  action  within sixty days
after the date set for demanding payment and depositing share certificates,  the
corporation  shall return the  deposited  certificates  and release the transfer
restrictions imposed on uncertificated shares.

 (b)  If  after  returning   deposited   certificates  and  releasing   transfer
restrictions,  the  corporation  takes the proposed  action,  it must send a new
dissenters' notice under section 33-862 and repeat the payment demand procedure.

ss. 33-867. After-acquired shares

 (a) A corporation may elect to withhold payment required by section 33-865 from
a dissenter unless he was the beneficial owner of the shares before the date set
forth in the  dissenters'  notice as the date of the first  announcement to news
media or to shareholders of the terms of the proposed corporate action.

 (b) To the extent the corporation  elects to withhold  payment under subsection
(a) of this  section,  after  taking the


                                      B-6
<PAGE>

proposed corporate action, it shall estimate the fair value of the shares,  plus
accrued  interest,  and shall pay this  amount to each  dissenter  who agrees to
accept it in full  satisfaction of his demand.  The corporation  shall send with
its offer a  statement  of its  estimate  of the fair  value of the  shares,  an
explanation  of  how  the  interest  was  calculated  and  a  statement  of  the
dissenter's right to demand payment under section 33-868.

ss. 33-868. Procedure if shareholder dissatisfied with payment or offer

 (a) A dissenter  may notify the  corporation  in writing of his own estimate of
the fair value of his shares and amount of interest  due, and demand  payment of
his estimate, less any payment under section 33-865, or reject the corporation's
offer under  section  33-867 and demand  payment of the fair value of his shares
and interest due, if:

 (1) The dissenter believes that the amount paid under section 33-865 or offered
under  section  33-867  is less  than the fair  value of his  shares or that the
interest due is incorrectly calculated;

(2) The corporation fails to make payment under section 33-865 within sixty days
after the date set for demanding payment; or

 (3) The corporation, having failed to take the proposed action, does not return
the  deposited  certificates  or release the  transfer  restrictions  imposed on
uncertificated  shares  within  sixty  days  after  the date  set for  demanding
payment.

 (b) A dissenter waives his right to demand payment under this section unless he
notifies the  corporation of his demand in writing under  subsection (a) of this
section within thirty days after the corporation made or offered payment for his
shares.

ss.ss. 33-869, 33-870. Reserved for future use



                                      B-7
<PAGE>

                        (C) JUDICIAL APPRAISAL OF SHARES

ss. 33-871. Court action

 (a) If a demand  for  payment  under  section  33-868  remains  unsettled,  the
corporation  shall commence a proceeding  within sixty days after  receiving the
payment  demand and petition the court to determine the fair value of the shares
and accrued interest. If the corporation does not commence the proceeding within
the sixty-day period, it shall pay each dissenter whose demand remains unsettled
the amount demanded.

 (b) The corporation shall commence the proceeding in the superior court for the
judicial  district where a  corporation's  principal  office or, if none in this
state,  its  registered  office  is  located.  If the  corporation  is a foreign
corporation  without a registered  office in this state,  it shall  commence the
proceeding in the superior court for the judicial  district where the registered
office of the domestic  corporation merged with or whose shares were acquired by
the foreign corporation was located.

 (c) The corporation shall make all dissenters, whether or not residents of this
state,  whose demands remain unsettled parties to the proceeding as in an action
against their shares and all parties must be served with a copy of the petition.
Nonresidents  may be served by registered or certified mail or by publication as
provided by law.

 (d) The  jurisdiction  of the court in which the proceeding is commenced  under
subsection (b) of this section is plenary and  exclusive.  The court may appoint
one or more persons as appraisers to receive evidence and recommend  decision on
the  question of fair value.  The  appraisers  have the powers  described in the
order appointing them, or in any amendment to it. The dissenters are entitled to
the same discovery rights as parties in other civil proceedings.

 (e) Each  dissenter  made a party to the proceeding is entitled to judgment (1)
for the  amount,  if any, by which the court finds the fair value of his shares,
plus interest,  exceeds the amount paid by the corporation,  or (2) for the fair
value,  plus  accrued  interest,  of his  after-acquired  shares  for  which the
corporation elected to withhold payment under section 33-867.

                                      B-8
<PAGE>

ss. 33-872. Court costs and counsel fees

 (a) The court in an appraisal  proceeding  commenced under section 33-871 shall
determine all costs of the proceeding, including the reasonable compensation and
expenses of appraisers  appointed by the court. The court shall assess the costs
against the  corporation,  except that the court may assess costs against all or
some of the dissenters,  in amounts the court finds equitable, to the extent the
court finds the dissenters acted  arbitrarily,  vexatiously or not in good faith
in demanding payment under section 33-868.

 (b) The court may also assess the fees and  expenses of counsel and experts for
the respective  parties,  in amounts the court finds equitable:  (1) Against the
corporation  and in  favor  of any or all  dissenters  if the  court  finds  the
corporation did not  substantially  comply with the requirements of sections 33-
860 to 33-868,  inclusive; or (2) against either the corporation or a dissenter,
in favor of any other party,  if the court finds that the party against whom the
fees and expenses are assessed  acted  arbitrarily,  vexatiously  or not in good
faith  with  respect  to the  rights  provided  by  sections  33-855 to  33-872,
inclusive.

 (c) If the court finds that the services of counsel for any  dissenter  were of
substantial benefit to other dissenters  similarly  situated,  and that the fees
for those services should not be assessed against the corporation, the court may
award to these counsel reasonable fees to be paid out of the amounts awarded the
dissenters who were benefited.


                                      B-9
<PAGE>

                                                                    Appendix C

                              Amended and Restated

                            ARTICLES OF INCORPORATION

                                       of

                                 HSB GROUP, INC.

                          Effective as of _______, 1997

                              Hartford, Connecticut





                                      C-1
<PAGE>


                            ARTICLES OF INCORPORATION
                                       of
                                 HSB GROUP, INC.

Article I

The name of the Corporation is HSB Group, Inc.

Article II

The address of the  registered  office of the  Corporation  is One State Street,
Hartford,  Connecticut,  06102-5024.  The name of the  registered  agent at that
address is R. Kevin Price.

Article III

The nature of the business to be transacted,  and the purposes to be promoted or
carried out by the Corporation,  are to engage in any lawful act or activity for
which corporations may be formed under the Connecticut  Business Corporation Act
or any successor statute thereto.

Article IV

A.   The authorized  number of shares,  which may be increased from time to time
     when and if  authorized  by the  shareholders  shall  consist of 50,000,000
     shares of common  stock and 500,000  shares of  preferred  stock,  of which
     250,000  shares  have been  designated  as  "Series A Junior  Participating
     Preferred  Stock"  and 2,000  shares  have  been  designated  as  "Series B
     Convertible Preferred Stock".

   
B.   The Board of  Directors  is  authorized  to fix and  determine  the  terms,
     limitations  and relative  rights and  preferences  of the preferred  stock
     including,  without  limitation,  any voting rights thereof,  to divide and
     issue the preferred  stock in series,  to fix and determine the  variations
     among  series to the extent  permitted by law and to provide that shares of
     the preferred  stock,  or any series thereof,  may be convertible  into the
     same or a different number of shares of common stock. No shareholder  shall
     have any  preemptive  right to purchase or  subscribe  to any shares of any
     class of stock of the Corporation,  whether now or hereafter authorized, or
     to


                                      C-2
<PAGE>

     any  securities  convertible  into  shares  of any class of stock of the
     Corporation.
    

C.   The designations,  voting powers, preferences and relative,  participating,
     optional  and other  special  rights of the  Series A Junior  Participating
     Preferred  Stock,  and  the  qualifications,  limitations  or  restrictions
     thereof are as follows:

     1.  Designation and Amount.

        The  shares  of such  series  shall be  designated  as  "Series A Junior
        Participating  Preferred  Stock" and the  number of shares  constituting
        such series shall be 250,000.

     2.  Dividends and Distributions.

     (a)  Subject to the prior and superior  rights of the holders of any shares
          of any series of  Preferred  Stock  ranking  prior and superior to the
          shares of Series A Junior  Participating  Preferred Stock with respect
          to dividends,  the holders of shares of Series A Junior  Participating
          Preferred Stock shall be entitled to receive, when, as and if declared
          by the  Board of  Directors  out of funds  legally  available  for the
          purpose,  quarterly dividends payable in cash on the last business day
          of January, April, July and October in each year (each such date being
          referred to herein as a "Quarterly Dividend Payment Date ), commencing
          on the first Quarterly  Dividend Payment Date after the first issuance
          of a share or  fraction  of a share of  Series A Junior  Participating
          Preferred  Stock, in an amount per share (rounded to the nearest cent)
          equal to the greater of (a) $12.00 or (b) subject to the provision for
          adjustment  hereinafter  set forth,  200 times the aggregate per share
          amount of all cash  dividends,  and 200 times the  aggregate per share
          amount   (payable  in  kind)  of  all  non-cash   dividends  or  other
          distributions  other than a dividend payable in shares of Common Stock
          or a  subdivision  of the  outstanding  shares  of  Common  Stock  (by
          reclassification or otherwise),  declared on the Common Stock, without
          par  value,  of  the  


                                      C-3
<PAGE>

          Corporation   (the  "Common  Stock")  since  the
          immediately  preceding  Quarterly  Dividend  Payment  Date,  or,  with
          respect to the first Quarterly  Dividend Payment Date, since the first
          issuance  of any  share  or  fraction  of a share  of  Series A Junior
          Participating  Preferred Stock. In the event the Corporation  shall at
          any time after November 28, 1988 (the "Rights  Declaration  Date") (i)
          declare  any  dividend  on Common  Stock  payable  in shares of Common
          Stock,  (ii) subdivide the  outstanding  Common Stock or (iii) combine
          the outstanding Common Stock into a smaller number of shares,  then in
          each  such  case the  amount  to which  holders  of shares of Series A
          Junior  Participating  Preferred Stock were entitled immediately prior
          to such event  under  clause (b) of the  preceding  sentence  shall be
          adjusted by  multiplying  such amount by a fraction  the  numerator of
          which is the number of shares of Common Stock outstanding  immediately
          after such event and the  denominator of which is the number of shares
          of Common Stock that were outstanding immediately prior to such event.

     (b)  The Corporation shall declare a dividend or distribution on the Series
          A Junior Participating  Preferred Stock as provided in Paragraph 2.(a)
          above  immediately after it declares a dividend or distribution on the
          Common  Stock  (other  than a  dividend  payable  in  shares of Common
          Stock);  provided that, in the event no dividend or distribution shall
          have been  declared on the Common Stock during the period  between any
          Quarterly  Dividend  Payment  Date and the next  subsequent  Quarterly
          Dividend  Payment Date, a dividend of $12.00 per share on the Series A
          Junior Participating  Preferred Stock shall nevertheless be payable on
          such subsequent Quarterly Dividend Payment Date.

     (c)  Dividends  shall  begin to accrue  and be  cumulative  on  outstanding
          shares  of  Series A Junior  Participating  Preferred  Stock  from the
          Quarterly  Dividend  Payment Date next  preceding the date of issue of
          such shares of Series A Junior  Participating  Preferred  stock unless
          the date of 


                                      C-4
<PAGE>

          issue of such  shares is prior to the record  date for the
          first Quarterly Dividend Payment Date, in which case dividends on such
          shares  shall begin to accrue from the date of issue of such shares or
          unless the date of issue is a Quarterly  Dividend Payment Date or is a
          date after the record date for the  determination of holders of shares
          of Series A Junior Participating Preferred Stock entitled to receive a
          quarterly  dividend and before such Quarterly Dividend Payment Date in
          either of which  events  such  dividends  shall begin to accrue and be
          cumulative  from such  Quarterly  Dividend  Payment Date.  Accrued but
          unpaid dividends shall not bear interest. Dividends paid on the shares
          of Series A Junior  Participating  Preferred  Stock in an amount  less
          than the  total  amount  of such  dividends  at the time  accrued  and
          payable on such shares shall be allocated pro rata on a share-by-share
          basis  among  all such  shares at the time  outstanding.  The Board of
          Directors  may fix a record date for the  determination  of holders of
          shares of Series A Junior  Participating  Preferred  Stock entitled to
          receive payment of a dividend or distribution declared thereon,  which
          record  date shall be no more than 30 days prior to the date fixed for
          the payment thereof.

     3. Voting Rights.

     The  holders  of shares of Series A Junior  Participating  Preferred  Stock
     shall have the following voting rights:

     (a)  Subject to the provision for adjustment  hereinafter  set forth,  each
          share of Series A Junior  Participating  Preferred Stock shall entitle
          the holder thereof to 200 votes on all matters  submitted to a vote of
          the  shareholders  of the  Corporation.  In the event the  Corporation
          shall at any time after the Rights  Declaration  Date (i)  declare any
          dividend  on Common  stock  payable  in shares  of Common  Stock  (ii)
          subdivide  the   outstanding   Common  Stock,  or  (iii)  combine  the
          outstanding Common Stock into a smaller number of shares, then in each
          such case the number of votes per share to which  holders of shares of
          Series  A  Junior   Participating   Preferred   Stock


                                      C-5
<PAGE>

          were  entitled  immediately  prior to such event  shall be adjusted by
          multiplying  such number by a fraction  the  numerator of which is the
          number of shares of Common Stock  outstanding  immediately  after such
          event and the  denominator  of which is the number of shares of Common
          Stock that were outstanding immediately prior to such event.

     (b)  Except as otherwise  provided  herein or by law, the holders of shares
          of Series A Junior  Participating  Preferred  Stock and the holders of
          shares of Common Stock shall vote together as one class on all matters
          submitted to a vote of shareholders of the Corporation.

     (c)  (i) If at any time  dividends  on any  Series  A Junior  Participating
          Preferred  Stock  shall be in  arrears  in an amount  equal to six (6)
          quarterly dividends thereon,  the occurrence of such contingency shall
          mark the  beginning  of a period  (herein  called a "default  period")
          which  shall  extend  until  such time  when all  accrued  and  unpaid
          dividends  for all  previous  quarterly  dividend  periods and for the
          current  quarterly  dividend  period on all  shares of Series A Junior
          Participating   Preferred  Stock  then  outstanding  shall  have  been
          declared  and paid or set  apart  for  payment.  During  each  default
          period,  all  holders of  Preferred  Stock  (including  holders of the
          Series A Junior  Participating  Preferred  Stock)  with  dividends  in
          arrears in an amount  equal to six (6)  quarterly  dividends  thereon,
          voting as a class,  irrespective  of  series,  shall have the right to
          elect two (2) Directors.

          (ii) During any default  period,  such voting  right of the holders of
          Series  A  Junior  Participating  Preferred  Stock  may  be  exercised
          initially at a special meeting called  pursuant to subparagraph  (iii)
          of this Section 3.(c). or at any annual meeting of  shareholders,  and
          thereafter at annual meetings of  shareholders,  provided that neither
          such voting  right nor the right of the holders of any other series of
          Preferred Stock, if any, to increase, in certain cases, the authorized
          number


                                      C-6
<PAGE>

          of  Directors  shall be  exercised  unless  the  holders of ten
          percent (10%) in number of shares of Preferred Stock outstanding shall
          be  present  in  person or by proxy.  The  absence  of a quorum of the
          holders of Common  Stock shall not affect the  exercise by the holders
          of Preferred  Stock of such voting right.  At any meeting at which the
          holders of Preferred  Stock shall exercise such voting right initially
          during an existing default period,  they shall have the right,  voting
          as a class, to elect  Directors to fill such vacancies,  if any in the
          Board of  Directors as may then exist up to two (2)  Directors  or, if
          such  right is  exercised  at an  annual  meeting,  to  elect  two (2)
          Directors.  If the  number  which  may be so  elected  at any  special
          meeting  does not amount to the  required  number,  the holders of the
          Preferred  Stock  shall  have the right to make such  increase  in the
          number of  Directors  as shall be  necessary to permit the election by
          them of the required number.  After the holders of the Preferred Stock
          shall have  exercised  their right to elect  Directors  in any default
          period  and  during  the  continuance  of such  period,  the number of
          Directors  shall not be increased  or decreased  except by vote of the
          holders of  Preferred  Stock as herein  provided  or  pursuant  to the
          rights of any equity  securities  ranking senior to or pari passu with
          the Series A Junior Participating Preferred Stock.

          (iii)Unless the holders of Preferred  Stock shall,  during an existing
          default  period,  have  previously  exercised  their  right  to  elect
          Directors,  the Board of Directors may order,  or any  shareholder  or
          shareholders  owning in the  aggregate not less than ten percent (10%)
          of  the  total  number  of  shares  of  Preferred  Stock  outstanding,
          irrespective of series, may request, the calling of special meeting of
          the holders of  Preferred  Stock,  which  meeting  shall  thereupon be
          called by the  President,  a  Vice-President  or the  Secretary of the
          Corporation. Notice of such meeting and of any annual meeting at which
          holders of  Preferred  Stock are  entitled  to vote  pursuant  to this
          paragraph  3(c)(iii)  shall be  given  to each  holder 


                                      C-7
<PAGE>

          of record of  Preferred  Stock by mailing a copy of such notice to him
          at  his  last  address  as  the  same  appears  on  the  books  of the
          Corporation.  Such meeting shall be called for a time not earlier than
          20 days and not later  than 60 days  after such order or request or in
          default of the calling of such meeting within 60 days after such order
          or  request,  such  meeting  may be  called on  similar  notice by any
          shareholder or shareholders  owning in the aggregate not less than ten
          percent  (10%) of the  total  number  of  shares  of  Preferred  Stock
          outstanding.   Notwithstanding   the   provisions  of  this  paragraph
          3(c)(iii),  no such special  meeting shall be called during the period
          within  60 days  immediately  preceding  the date  fixed  for the next
          annual meeting of the shareholders.

          (iv) In any default  period,  the holders of Common  Stock,  and other
          classes of stock of the  Corporation if applicable,  shall continue to
          be entitled to elect the whole number of  Directors  until the holders
          of Preferred  Stock shall have exercised  their right to elect two (2)
          Directors voting as a class, after the exercise of which right (x) the
          Directors so elected by the holders of Preferred  Stock shall continue
          in office  until  their  successors  shall  have been  elected by such
          holders  or until the  expiration  of the  default  period and (y) any
          vacancy in the Board of Directors may (except as provided in paragraph
          3(c)(ii)  of this  Section)  be  filled by vote of a  majority  of the
          remaining Directors theretofore elected by the holders of the class of
          stock  which  elected  the  Director  whose  office  shall have become
          vacant. References in this paragraph 3.(c) to Directors elected by the
          holders of a particular class of stock shall include Directors elected
          by such  Directors to fill  vacancies as provided in clause (y) of the
          foregoing sentence.

          (v) Immediately upon the expiration of a default  period,(x) the right
          of the holders of Preferred  Stock as a class to elect Directors shall
          cease,  (y) the  term  of any  Directors  elected  by the  holders  of
          Preferred  Stock as a class  shall


                                      C-8
<PAGE>

          terminate and (z) the number of Directors  shall be such number as may
          be  provided  for  in  the  certificate  of  incorporation  or  bylaws
          irrespective  of any  increase  made  pursuant  to the  provisions  of
          paragraph  3(c)(ii)  (such number being  subject,  however,  to change
          thereafter  in any manner  provided  by law or in the  certificate  of
          incorporation  or bylaws).  Any  vacancies  in the Board of  Directors
          effected by the  provisions  of clauses  (y) and (z) in the  preceding
          sentence may be filled by a majority of the remaining Directors.

     (d)  Except as set forth herein,  holders of Series A Junior  Participating
          Preferred  Stock shall have no special voting rights and their consent
          shall not be required  (except to the extent they are entitled to vote
          with  holders  of Common  Stock as set forth  herein)  for  taking any
          corporate action.

     4. Certain Restrictions.

        (a)   Whenever  quarterly  dividends or other dividends or distributions
              payable on the Series A Junior  Participating  Preferred  Stock as
              provided  in Section 2 are in  arrears,  thereafter  and until all
              accrued and unpaid  dividends  and  distributions,  whether or not
              declared,  on shares of  Series A Junior  Participating  Preferred
              Stock  outstanding  shall have been paid in full, the  Corporation
              shall not:

              (i) declare or pay dividends on, make any other  distributions on,
                  or redeem or purchase or otherwise  acquire for  consideration
                  any shares of stock ranking  junior (either as to dividends or
                  upon  liquidation,  dissolution or winding up) to the Series A
                  Junior Participating Preferred Stock;

              (ii)declare or pay  dividends  on or make any other  distributions
                  on any  shares  of stock  ranking  on a parity  (either  as to
                  dividends or upon liquidation, dissolution or winding up) with
                  the  Series A Junior  Participating  Preferred  Stock,  except
                  dividends  paid  ratably on the Series A Junior  Participating
                  Preferred  Stock and all such


                                      C-9
<PAGE>

                    parity stock on which dividends are payable or in arrears in
                    proportion  to the total amounts to which the holders of all
                    such shares are then entitled;

             (iii)redeem or purchase  or  otherwise  acquire  for  consideration
                  shares  of  any  stock  ranking  on a  parity  (either  as  to
                  dividends or upon liquidation, dissolution or winding up) with
                  the Series A Junior  Participating  Preferred Stock,  provided
                  that the  Corporation  may at any  time  redeem,  purchase  or
                  otherwise  acquire shares of any such parity stock in exchange
                  for  shares of any  stock of the  Corporation  ranking  junior
                  (either as to dividends or upon  dissolution,  liquidation  or
                  winding  up) to the  Series A Junior  Participating  Preferred
                  Stock;

           (iv)  purchase or otherwise  acquire for  consideration any shares of
                 Series A Junior Participating Preferred Stock, or any shares of
                 stock   ranking   on  a  parity   with  the   Series  A  Junior
                 Participating  Preferred  Stock,  except in  accordance  with a
                 purchase offer made in writing or by publication (as determined
                 by the Board of  Directors)  to all holders of such shares upon
                 such terms as the Board of Directors,  after  consideration  of
                 the respective  annual dividend rates and other relative rights
                 and  preferences  of the respective  series and classes,  shall
                 determine  in good  faith  will  result  in fair and  equitable
                 treatment among the respective series or classes.

       (b)    The Corporation shall not permit any subsidiary of the Corporation
              to purchase or otherwise  acquire for  consideration any shares of
              stock of the  Corporation  unless  the  Corporation  could,  under
              paragraph  (a) of this Section 4,  purchase or  otherwise  acquire
              such shares at such time and in such manner.

     5.  Reacquired Shares.

         Any shares of Series A Junior  Participating  Preferred Stock purchased
         or otherwise acquired by the Corporation in any manner whatsoever shall
         be retired 


                                      C-10
<PAGE>

          and cancelled promptly after the acquisition  thereof. All such shares
          shall upon their cancellation become authorized but unissued shares of
          Preferred  Stock  and  may be  reissued  as part  of a new  series  of
          Preferred  Stock to be created by  resolution  or  resolutions  of the
          Board of Directors,  subject to the  conditions  and  restrictions  on
          issuance set forth herein.

    6.  Liquidation, Dissolution or Winding Up.

     (a)  Upon any liquidation (voluntary or otherwise),  dissolution or winding
          up of the Corporation, no distribution shall be made to the holders of
          shares  of  stock  ranking  junior  (either  as to  dividends  or upon
          liquidation,  dissolution  or  winding  up) to  the  Series  A  Junior
          Participating  Preferred Stock unless,  prior thereto,  the holders of
          shares of Series A Junior  Participating  Preferred  Stock  shall have
          received  $200 per share,  plus an amount  equal to accrued and unpaid
          dividends and distributions  thereon,  whether or not declared, to the
          date  of  such  payment  (the  "Series  A  Liquidation   Preference").
          Following  the payment of the full amount of the Series A  Liquidation
          Preference,  no additional  distributions shall be made to the holders
          of shares of Series A Junior  Participating  Preferred  Stock  unless,
          prior  thereto,  the  holders  of shares of Common  Stock  shall  have
          received an amount per share (the  "Common  Adjustment")  equal to the
          quotient obtained by dividing (i) the Series A Liquidation  Preference
          by (ii) 200 (as appropriately  adjusted as set forth in paragraph 6(c)
          below to reflect  such events as stock  splits,  stock  dividends  and
          recapitalizations  with  respect to the Common  Stock) (such number in
          clause (ii), the  "Adjustment  Number").  Following the payment of the
          full  amount of the  Series A  Liquidation  Preference  and the Common
          Adjustment  in  respect of all  outstanding  shares of Series A Junior
          Participating Preferred Stock and Common Stock, respectively,  holders
          of Series A Junior Participating Preferred Stock and holders of shares
          of Common Stock shall receive their ratable and proportionate share of
          the remaining  assets to be distributed in the ratio of the Adjustment
          Number to 1 with respect to such Preferred  Stock and Common


                                      C-11
<PAGE>

          Stock, on a per share basis, respectively.

       (b)   In  the  event,  however  that  there  are  not  sufficient  assets
             available  to permit  payment in full of the  Series A  Liquidation
             Preference and the  liquidation  preferences of all other series of
             preferred  stock if any,  which rank on a parity  with the Series A
             Junior  Participating  Preferred Stock,  then such remaining assets
             shall be  distributed  ratably to the holders of such parity shares
             in proportion to their respective liquidation  preferences.  In the
             event,  however,  that there are not sufficient assets available to
             permit payment in full of the Common Adjustment then such remaining
             assets shall be distributed ratably to the holders of Common Stock.

       (c)   In the event the  Corporation  shall at any time  after the  Rights
             Declaration  Date (i) declare any dividend on Common Stock  payable
             in shares of Common Stock,  (ii) subdivide the  outstanding  Common
             Stock or (iii) combine the outstanding  Common Stock into a smaller
             number of shares,  then in each such case the Adjustment  Number in
             effect  immediately  prior  to such  event  shall  be  adjusted  by
             multiplying  such Adjustment  Number by a fraction the numerator of
             which  is  the  number  of  shares  of  Common  Stock   outstanding
             immediately  after such event and the  denominator  of which is the
             number of shares of Common Stock that were outstanding  immediately
             prior to such event.

    7.  Consolidation, Merger, etc.

        In case the  Corporation  shall  enter into any  consolidation,  merger,
        combination or other transaction in which the shares of Common Stock are
        exchanged for or changed into other stock or securities, cash and/or any
        other  property,  then in any such  case the  shares  of Series A Junior
        Participating  Preferred  Stock  shall  at the  same  time be  similarly
        exchanged  or changed in an amount per share  (subject to the  provision
        for adjustment  hereinafter  set forth) equal to 200 times the aggregate
        amount of stock, securities,  cash and/or any other property (payable in
        kind),  as the case may be, into which or for which each share of Common
        Stock


                                      C-12
<PAGE>

        is changed or exchanged. In the event the Corporation shall at any
        time after the Rights  Declaration  Date (i)  declare  any  dividend  on
        Common  Stock  payable in shares of Common  Stock,  (ii)  subdivide  the
        outstanding  Common Stock or (iii) combine the outstanding  Common Stock
        into a smaller  number of shares,  then in each such case the amount set
        forth in the  preceding  sentence with respect to the exchange or change
        of shares  of Series A Junior  Participating  Preferred  Stock  shall be
        adjusted by multiplying such amount by a fraction the numerator of which
        is the number of shares of Common Stock  outstanding  immediately  after
        such  event  and the  denominator  of which is the  number  of shares of
        Common Stock that were outstanding immediately prior to such event.

    8.  Optional Redemption.

     (a)  The Corporation  shall have the option to redeem the whole or any part
          of the Series A Junior Participating  Preferred Stock at any time at a
          redemption  price equal to,  subject to the provision  for  adjustment
          hereinafter set forth,  200 times the "current per share market price"
          of the  Common  Stock  on the date of the  mailing  of the  notice  of
          redemption,  together with unpaid accumulated dividends to the date of
          such redemption.  In the event the Corporation shall at any time after
          the Rights  Declaration  Date (i) declare any dividend on Common Stock
          payable in shares of Common  Stock,  (ii)  subdivide  the  outstanding
          Common  Stock,  (iii)  combine  the  outstanding  Common  Stock into a
          smaller number of shares or (iv) issue any shares by  reclassification
          of its  shares of Common  Stock,  then in each such case the amount to
          which  holders  of shares of Series A Junior  Participating  Preferred
          Stock  shall be  otherwise  entitled  immediately  prior to such event
          under  the  immediately   preceding  sentence  shall  be  adjusted  by
          multiplying  such amount by a fraction the numerator of which shall be
          the number of shares of Common  Stock  outstanding  immediately  after
          such event and the  denominator of which shall be the number of shares
          of Common Stock that shall have been outstanding  immediately prior to
          such event.  The


                                      C-13
<PAGE>

          "current per share market price" on any date shall be deemed to be the
          average of the closing  prices per share of such Common  Stock for the
          10  consecutive  Trading  Days (as such term is  hereinafter  defined)
          immediately  prior to such date.  The closing price for each day shall
          be the last sale price,  regular  way,  or, in case no such sale shall
          take  place on such day,  the  average  of the  closing  bid and asked
          prices,  regular  way, in either  case as  reported  in the  principal
          consolidated  transaction  reporting system with respect to securities
          listed or  admitted to trading on the New York Stock  Exchange  or, if
          the Common Stock shall not be listed or admitted to trading on the New
          York  Stock  Exchange,  as  reported  in  the  principal  consolidated
          transaction  reporting  system with  respect to  securities  listed or
          admitted to trading on the principal national  securities  exchange on
          which the Common  Stock shall not be listed or admitted to trading or,
          if the Common  Stock shall not be listed or admitted to trading on any
          national  securities  exchange,  the last  quoted  price or, if not so
          quoted  the  average  of the  high  bid and low  asked  prices  in the
          over-the-counter  market,  as reported by the National  Association of
          Securities Dealers, Inc. Automated Quotation System ("NASDAQ") or such
          other  system  then in use or,  if on any such date the  Common  Stock
          shall not be  quoted  by any such  organization,  the  average  of the
          closing bid and asked  prices as furnished  by a  professional  market
          maker  making a market in the Common  Stock  selected  by the Board of
          Directors  of the  Corporation.  If on such date no such market  maker
          shall be making a market in the  Common  Stock,  the fair value of the
          Common Stock on such date as  determined in good faith by the Board of
          Directors of the  Corporation  shall be used.  The term  "Trading Day"
          shall mean a day on which the principal national  securities  exchange
          on which the Common Stock shall be listed or admitted to trading shall
          be open for the  transaction of business or, if the Common Stock shall
          not be  listed or  admitted  to  trading  on any  national  securities
          exchange, a Monday,  Tuesday,  Wednesday,  Thursday or Friday on which
          banking  institutions in the State of New York 


                                      C-14
<PAGE>

          shall not be  authorized  or obligated  by law or  executive  order to
          close.

     (b)  Notice of any such redemption shall be given by mailing to the holders
          of the Series A Junior Participating  Preferred Stock a notice of such
          redemption,  first class postage prepaid, not later than the thirtieth
          day and not earlier  than the  sixtieth-day  before the date fixed for
          redemption,  at their last  address as the same shall  appear upon the
          books of the  Corporation.  Any  notice  which  shall be mailed in the
          manner herein  provided  shall be  conclusively  presumed to have been
          duly given,  whether or not the  stockholder  shall have received such
          notice, and failure duly to give such notice by mail, or any defect in
          such notice, to any holder of Series A Junior Participating  Preferred
          Stock  shall  not  affect  the  validity  of the  proceedings  for the
          redemption of such Series A Junior Participating Preferred Stock.

     (c)  If less  than  all the  outstanding  shares  of the  Series  A  Junior
          Participating  Preferred Stock are to be redeemed by the  Corporation,
          the number of shares to be redeemed  shall be  determined by the Board
          of Directors and the shares to be redeemed  shall be determined by lot
          or pro  rata or in such  fair and  equitable  other  manner  as may be
          prescribed by resolution of the Board of Directors.

     (d)  The  notice  of   redemption   to  each  holder  of  Series  A  Junior
          Participating  Preferred  Stock shall specify (a) the number of shares
          of Series A Junior Participating  Preferred Stock of such holder to be
          redeemed, (b) the date fixed for redemption,  (c) the redemption price
          and (d) the place of payment of the redemption price.

     (e)  If any such notice of redemption  shall have been duly given or if the
          corporation shall have given to the bank or trust company  hereinafter
          referred  to  irrevocable  written  authorization  promptly to give or
          complete  such  notice,  and  if  on or  before  the  redemption  date
          specified  therein the funds necessary for such redemption  shall have
          been


                                      C-15
<PAGE>

          deposited by the Corporation with the bank or trust company designated
          in such  notice,  doing  business in the United  States of America and
          having a capital,  surplus and undivided profits  aggregating at least
          $25,000,000 according to its last published statement of condition, in
          trust for the benefit of the holders of Series A Junior  Participating
          Preferred Stock called for redemption,  then, notwithstanding that any
          certificate  for such shares so called for  redemption  shall not have
          been  surrendered  for  cancellation,  from and after the time of such
          deposit  all such  shares  called  for  redemption  shall no longer be
          deemed  outstanding,  all rights with  respect to such shares shall no
          longer be deemed  outstanding  and all  rights  with  respect  to such
          shares shall  forthwith  cease and terminate,  except the right of the
          holders thereof to receive from such bank or trust company at any time
          after  the  time of such  deposit  the  funds  so  deposited,  without
          interest,  the right to  exercise,  up to the close of business on the
          fifth day before  the date fixed for  redemption,  all  privileges  of
          conversion  or  exchange  if any.  In case  less  than all the  shares
          represented by any surrendered  certificate  shall be redeemed,  a new
          certificate  shall be issued  representing  the unredeemed  shares Any
          interest  accrued  on such  funds  so  deposited  shall be paid to the
          Corporation from time to time. Any funds so deposited and unclaimed at
          the end of six years from such  redemption date shall be repaid to the
          Corporation,  after  which  the  holders  of shares of Series A Junior
          Participating Preferred Stock called for redemption shall look only to
          the Corporation for payment thereof; provided, however, that any funds
          so deposited which shall not be required for redemption because of the
          exercise of any privilege of conversion or exchange  subsequent to the
          date of deposit shall be repaid to the Corporation forthwith.

     9.  Ranking.

         The Series A Junior Participating  Preferred Stock shall rank junior to
         all other series of the Corporation's 


                                      C-16
<PAGE>

          Preferred Stock as to the payment of dividends and the distribution of
          assets, unless the terms of any such series shall provide otherwise.

    10.  Amendment.

         The Articles of Incorporation  of the Corporation  shall not be further
         amended  in any  manner  which  would  materially  alter or change  the
         powers,   preferences   or  special  rights  of  the  Series  A  Junior
         Participating  Preferred  Stock so as to affect them adversely  without
         the  affirmative  vote of the  holders  of at least a  majority  of the
         outstanding  shares of Series A Junior  Participating  Preferred Stock,
         voting separately as a class.

D.   The designations,  voting powers, preferences and relative,  participating,
     optional and other  special  rights of the Series B  Convertible  Preferred
     Stock, and the qualifications,  limitations or restrictions  thereof are as
     follows:

     1.  Number of Shares and Designations.

         Two thousand (2,000) shares of the Preferred Stock,  without par value,
         of the Corporation  are  constituted as a series thereof  designated as
         Series B Convertible Preferred Stock (the "Series B Preferred Stock").

     2.  Definitions.

          For  purposes of the Series B Preferred  Stock,  the  following  terms
          shall have the meanings indicated:

     (a)  "Accrued  Dividends"  shall have the meaning set forth in Section 4(a)
          below.

     (b)  "Articles of  Incorporation"  shall mean the Articles of Incorporation
          of the Corporation, as amended from time to time.

     (c)  "Board  of  Directors"  shall  mean  the  board  of  directors  of the
          Corporation or any committee  authorized by such board of directors to
          perform  any of its  responsibilities  with  respect  to the


                                      C-17
<PAGE>

          Series B Preferred Stock.

     (d)  "Business  Day" shall mean any day other than a Saturday,  Sunday or a
          day on which state or federally chartered banking  institutions in New
          York, New York are not required to be open.

     (e)  "Call Event" shall mean the consummation of a transaction  pursuant to
          Section 2.2 of the Transaction Agreement.

     (f)  "Common Stock" shall mean the common stock of the Corporation, without
          par value.

     (g)  "Constituent  Person" shall have the meaning set forth in Section 8(e)
          below.

     (h)  "Conversion Price" shall mean the conversion price per share of Common
          Stock for which the Series B Preferred Stock is  convertible,  as such
          Conversion  Price may be  adjusted  pursuant  to Section 8 below.  The
          initial conversion price will be $ 50.20.

     (i)  "Current  Market  Price" of publicly  traded shares of Common Stock or
          any other class of capital stock or other security of the  Corporation
          or any other  issuer  for any day shall mean the last  reported  sales
          price,  regular  way on such day,  or, if no sale takes  place on such
          day, the average of the reported  closing bid and asked prices on such
          day,  regular  way,  in either  case as reported on the New York Stock
          Exchange Composite Tape or, if such security is not listed or admitted
          for trading on the New York Stock Exchange ("NYSE"),  on the principal
          national  securities  exchange  on which  such  security  is listed or
          admitted  for trading or, if not listed or admitted for trading on any
          national  securities  exchange,  on the National  Market System of the
          National Association of Securities Dealers,  Inc. Automated Quotations
          System  ("NASDAQ") or, if such security is not quoted on such National
          Market System, the average of the closing bid and asked prices on such
          day in the  over-the-counter  market as  reported by NASDAQ or, if bid
          and asked  prices  for such  security  on


                                      C-18
<PAGE>

          such day shall not have been reported  through NASDAQ,  the average of
          the bid and asked  prices on such day as  furnished by any NYSE member
          firm  regularly  making a market in such  security  selected  for such
          purpose by the Board of Directors.

     (j)  "Dividend  Payment  Date" shall mean the last business day of January,
          April, July and October in each year,  commencing on the last business
          day of January, 1997, provided,  however, that if any Dividend Payment
          Date falls on any day other than a Business Day, the dividend  payment
          due on such  Dividend  Payment  Date shall be paid on the Business Day
          immediately following such Dividend Payment Date.

     (k)  "Dividend Periods" shall mean quarterly dividend periods commencing on
          the last business day of January, April, July and October of each year
          and ending on and  including  the day  preceding  the first day of the
          next  succeeding  Dividend  Period  (other than the  initial  Dividend
          Period,  which shall commence on the Issue Date and end on and include
          January 30, 1997).

     (l)  "Fair Market Value" shall mean the average of the daily Current Market
          Prices  of a share of Common  Stock  during  the five (5)  consecutive
          Trading Days selected by the  Corporation  commencing not more than 20
          Trading Days before, and ending not later than, the earlier of the day
          in  question  and the day  before  the "ex" date with  respect  to the
          issuance or distribution  requiring such  computation.  The term "'ex'
          date," when used with respect to any issuance or  distribution,  means
          the first day on which the Common  Stock trades  regular way,  without
          the right to receive such issuance or distribution, on the exchange or
          in the  market,  as the  case may be,  used to  determine  that  day's
          Current Market Price.

     (m)  "Issue  Date"  shall mean the first  date on which  shares of Series B
          Preferred Stock are issued and sold.

                                      C-19
<PAGE>

     (n)  "Junior  Stock"  shall mean the Common  Stock,  the Series A Preferred
          Stock and any other class or series of shares of the Corporation  over
          which the Series B Preferred  Stock has  preference or priority in the
          payment  of  dividends  or  in  the  distribution  of  assets  on  any
          liquidation, dissolution or winding up of the Corporation.

     (o)  "Liquidation  Preference"  shall have the meaning set forth in Section
          4(a) below.

     (p)  "non-electing  share" shall have the meaning set forth in Section 8(e)
          below.

     (q)  "Person" shall mean any individual, firm, partnership,  corporation or
          other entity, and shall include any successor (by merger or otherwise)
          of such entity.

     (r)  "Put Event" shall mean the  consummation of a transaction  pursuant to
          Section 2.3 of the Transaction Agreement.

     (s)  "Redemption  Date" shall have the  meaning  set forth in Section  5(b)
          below.

     (t)  "Rights" shall mean the rights of the  Corporation  which are issuable
          under the  Corporation's  Rights  Agreement  dated as of November  28,
          1988,  and as amended  from time to time,  or rights to  purchase  any
          capital  stock of the  Corporation  under  any  successor  shareholder
          rights  plan or plans  adopted  in  replacement  of the  Corporation's
          Rights Agreement.

     (u)  "Securities"  shall  have the  meaning  set forth in  Section  8(d)(3)
          below.

     (v)  "Series A Preferred Stock" shall mean the series of Preferred Stock of
          the  Corporation,  without  par  value,  designated  Series  A  Junior
          Participating Preferred Stock.

     (w)  "Series B Preferred Stock" shall have the meaning set forth in Section
          1 above.

                                      C-20
<PAGE>

     (x)  "set apart for payment" shall be deemed to include, without any action
          other than the  following,  the  recording by the  Corporation  in its
          accounting  ledgers  of any  accounting  or  bookkeeping  entry  which
          indicates,   pursuant  to  a   declaration   of   dividends  or  other
          distribution by the Board of Directors,  the allocation of funds to be
          so paid on any  series or class of capital  stock of the  Corporation;
          provided, however, that if any funds for any class or series of Junior
          Stock or any  class or series of stock  ranking  on a parity  with the
          Series B Preferred  Stock as to the payment of dividends are placed in
          a separate  account of the  Corporation  or delivered to a disbursing,
          paying or other  similar  agent,  then "set  apart for  payment"  with
          respect to the Series B Preferred  Stock shall mean placing such funds
          in a separate account or delivering such funds to a disbursing, paying
          or other similar agent.

     (y)  "Stated Value" shall have the meaning set forth in Section 4(a) below.

     (z)  "Trading  Day" shall mean any day on which the  securities in question
          are  traded  on the  NYSE,  or if such  securities  are not  listed or
          admitted for trading on the NYSE, on the principal national securities
          exchange on which such  securities  are listed or admitted,  or if not
          listed or admitted for trading on any national securities exchange, on
          the National  Market System of the NASDAQ,  or if such  securities are
          not  quoted  on  such  National  Market  System,   in  the  applicable
          securities market in which the securities are traded.

     (aa) "Transaction"  shall  have the  meaning  set forth in  Section  D.8(e)
          hereof.

     (bb) "Transaction Agreement" shall mean that certain Transaction Agreement,
          dated as of  December  30,  1994,  by and  among the  Corporation  and
          General Reinsurance Corporation.

     (cc) "Transfer Agent" means The First National Bank of


                                      C-21
<PAGE>

          Boston or such  other  agent or agents  of the  Corporation  as may be
          designated  by the Board of Directors  as the  transfer  agent for the
          Series B Preferred Stock.

     3.  Dividends.

     (a)  The  holders  of  shares  of the  Series B  Preferred  Stock  shall be
          entitled  to  receive,  when,  as and if  declared  by  the  Board  of
          Directors out of assets legally available for that purpose,  dividends
          payable  in cash at the rate per  annum of $650 per  share of Series B
          Preferred  Stock.  Such dividends  shall be cumulative  from the Issue
          Date,  whether or not in any Dividend Period or Periods there shall be
          assets of the  Corporation  legally  available for the payment of such
          dividends, and shall be payable quarterly, when, as and if declared by
          the  Board  of  Directors,  in  arrears  on  Dividend  Payment  Dates,
          commencing on January 31, 1997. Each such dividend shall be payable in
          arrears to the  holders of record of shares of the Series B  Preferred
          Stock,  as they appear on the stock records of the  Corporation at the
          close of business on such record  dates,  which shall not be more than
          60 days nor less than 10 days preceding the payment dates thereof,  as
          shall  be  fixed  by the  Board  of  Directors  or a  duly  authorized
          committee thereof.  Accrued and unpaid dividends for any past Dividend
          Periods may be declared and paid at any time, without reference to any
          Dividend  Payment  Date,  to  holders  of  record  on such  date,  not
          exceeding 45 days preceding the payment date thereof,  as may be fixed
          by the Board of Directors.

     (b)  The amount of dividends  payable for each full Dividend Period for the
          Series B Preferred  Stock  shall be  computed  by dividing  the annual
          dividend rate by four. The amount of dividends payable for the initial
          Dividend  Period,  or any other  period  shorter or longer than a full
          Dividend Period,  on the Series B Preferred Stock shall be computed on
          the basis of twelve  30-day  months  and a 360-day  year.  Holders  of
          shares of  Series B  Preferred  Stock  shall  not be  entitled  to any
          dividends,


                                      C-22
<PAGE>

          whether  payable in cash,  property or stock,  in excess of cumulative
          dividends,  as herein  provided,  on the Series B Preferred  Stock. No
          interest,  or sum of money in lieu of  interest,  shall be  payable in
          respect of any dividend  payment or payments on the Series B Preferred
          Stock that may be in arrears.

     (c)  So long as any shares of the Series B Preferred Stock are outstanding,
          no  dividends,  except as described in the next  succeeding  sentence,
          shall be  declared  or paid or set apart for  payment  on any class or
          series  of stock  of the  Corporation  ranking,  as to  dividends  and
          amounts distributable upon liquidation,  dissolution or winding up, on
          a parity with the Series B Preferred Stock, for any period unless full
          cumulative dividends have been or  contemporaneously  are declared and
          paid or declared  and a sum  sufficient  for the  payment  thereof set
          apart  for such  payment  on the  Series  B  Preferred  Stock  for all
          Dividend Periods terminating on or prior to the date of payment of the
          dividend on such class or series of parity stock.  When  dividends are
          not  paid in full or a sum  sufficient  for  such  payment  is not set
          apart, as aforesaid,  all dividends declared upon shares of the Series
          B Preferred  Stock and all dividends  declared upon any other class or
          series  of  stock  ranking  on a parity  as to  dividends  and  amount
          distributable  upon  liquidation,  dissolution  or winding up shall be
          declared ratably in proportion to the respective  amounts of dividends
          accumulated and unpaid on the Series B Preferred Stock and accumulated
          and unpaid on such parity stock.

     (d)  So long as any shares of the Series B Preferred Stock are outstanding,
          no  dividends  (other  than  (i) the  Rights  and  (ii)  dividends  or
          distributions  paid in shares of, or  options,  warrants  or rights to
          subscribe  for or purchase  shares of, Junior Stock) shall be declared
          or paid or set apart for  payment or other  distribution  declared  or
          made upon Junior  Stock,  nor shall any Junior  Stock or any series of
          stock  of  the  Corporation  ranking,  as  to  dividends  and  amounts
          distributable upon liquidation,


                                      C-23
<PAGE>

          dissolution  or winding up, on a parity with Series B Preferred  Stock
          be redeemed, purchased or otherwise acquired (other than a redemption,
          purchase  or other  acquisition  of shares of  Common  Stock  made for
          purposes of an employee  incentive or benefit plan of the  Corporation
          or any subsidiary) for any  consideration (or any moneys be paid to or
          made  available for a sinking fund for the redemption of any shares of
          any such stock) by the Corporation,  directly or indirectly (except by
          conversion into or exchange for Junior Stock), unless in each case the
          full cumulative  dividends on all  outstanding  shares of the Series B
          Preferred  Stock and any other stock of the  Corporation  ranking on a
          parity with the Series B Preferred  Stock, as to dividends and amounts
          distributable  upon liquidation,  dissolution or winding up shall have
          been paid or set apart for payment for all past Dividend  Periods with
          respect to the Series B Preferred Stock and all past dividend  periods
          with respect to such parity stock.

     4.  Payments upon Liquidation.

     (a)  In the event of any  liquidation,  dissolution  or  winding  up of the
          Corporation  before any payment or  distribution  of the assets of the
          Corporation (whether capital or surplus) shall be made to or set apart
          for the holders of Junior Stock, the holders of the shares of Series B
          Preferred  Stock shall be entitled  to receive  Ten  Thousand  Dollars
          ($10,000) per share of Series B Preferred  Stock (the "Stated  Value")
          plus an  amount  equal to all  dividends  (whether  or not  earned  or
          declared) accrued and unpaid thereon ("Accrued Dividends") to the date
          of final distribution to such holders (the "Liquidation  Preference");
          but such  holders  shall not be entitled to any further  payment.  If,
          upon any  liquidation,  dissolution or winding up of the  Corporation,
          the assets of the  Corporation,  or  proceeds  thereof,  distributable
          among the holders of the shares of Series B  Preferred  Stock shall be
          insufficient  to pay in  full  the  Liquidation  Preference,  and  the
          liquidation  preference  on all other shares of any class or series of
          stock  ranking,  as  to  dividends 


                                      C-24
<PAGE>

          and amounts distributable upon liquidation, dissolution or winding up,
          on a parity with the Series B Preferred  Stock,  then such assets,  or
          the proceeds thereof, shall be distributed among the holders of shares
          of Series B Preferred Stock and any such other parity stock ratably in
          accordance  with the respective  amounts that would be payable on such
          shares of Series B  Preferred  Stock and any such  other  stock if all
          amounts  payable  thereon were paid in full.  For the purposes of this
          Section 4, (i) a consolidation  or merger of the Corporation  with one
          or  more  corporations,   or  (ii)  a  sale  or  transfer  of  all  or
          substantially all of the Corporation's  assets, shall not be deemed to
          be a liquidation, dissolution or winding up, voluntary or involuntary,
          of the Corporation.

     (b)  Subject to the rights of the  holders of shares of any series or class
          or classes of stock  ranking on a parity with or prior to the Series B
          Preferred  Stock  as  to  dividends  and  amounts  distributable  upon
          liquidation,  dissolution  or  winding  up of the  Corporation,  after
          payment  shall have been made to the holders of the Series B Preferred
          Stock,  as and to the fullest  extent  provided in this Section 4, any
          other series or class or classes of Junior Stock shall, subject to the
          respective terms and provisions (if any) applying thereto, be entitled
          to receive any and all assets remaining to be paid or distributed, and
          the holders of the Series B  Preferred  Stock shall not be entitled to
          share therein.

     5.  Redemption at the Option of the Corporation.

        (a)   The shares of Series B Preferred  Stock shall be redeemable at the
              option of the Corporation by resolution of its Board of Directors,
              in whole (i) at any time on or after the fifth  anniversary of the
              Issue Date or (ii) if on the date of a notice  pursuant to Section
              5(b) below,  the Current  Market  Price of all Common  Stock which
              would be issuable  upon  conversion  of all of the 2,000 shares of
              Preferred  Stock  originally  issued,  as of any date  within  ten
              Business Days prior to such notice date, 


                                      C-25
<PAGE>

          exceeded $22 million.  In either case, such redemption shall be at the
          Stated Value,  plus all dividends  accrued and unpaid on the shares of
          Series B Preferred Stock up to the date fixed for the redemption, upon
          giving notice as provided hereinbelow.

        (b)   At least 90 days  prior to the date  fixed for the  redemption  of
              shares of Series B  Preferred  Stock,  a written  notice  shall be
              mailed in a postage  prepaid  envelope to each holder of record of
              the shares of Series B Preferred  Stock to be redeemed,  addressed
              to such holder at his post office  address as shown on the records
              of the  Corporation,  notifying such holder of the election of the
              corporation  to redeem  such  shares,  stating  the date fixed for
              redemption thereof (the "Redemption  Date"), and calling upon such
              holder to surrender to the Corporation,  on the Redemption Date at
              the  place   designated  in  such  notice,   his   certificate  or
              certificates  representing  the number of shares specified in such
              notice of redemption.

              On or after the Redemption Date, each holder of shares of Series B
              Preferred  Stock to be redeemed  shall  present and  surrender his
              certificate or certificates  for such shares to the Corporation at
              the place  designated in such notice and thereupon the  redemption
              price  of such  shares  shall  be paid to or on the  order  of the
              person whose name appears on such  certificate or  certificates as
              the  owner  thereof  and  each  surrendered  certificate  shall be
              canceled. In case less than all the shares represented by any such
              certificate  are  redeemed,  a new  certificate  shall  be  issued
              representing the unredeemed shares.

              From and after the Redemption  Date (unless  default shall be made
              by the  Corporation  in  payment  of the  redemption  price),  all
              dividends on the shares of Series B Preferred Stock designated for
              redemption in such notice shall cease to accrue, and all rights of
              the holders thereof as stockholders of the Corporation, except the
              right to receive the  redemption  price of such shares  (including
              all 


                                      C-26
<PAGE>

               accrued and unpaid  dividends up to the Redemption Date) upon the
               surrender of certificates  representing the same, shall cease and
               terminate  and such shares shall not  thereafter  be  transferred
               (except with the consent of the  Corporation) on the books of the
               Corporation,   and  such  shares   shall  not  be  deemed  to  be
               outstanding  for any purpose  whatsoever.  At its  election,  the
               Corporation,  prior  to the  Redemption  Date,  may  deposit  the
               redemption  price  (including all accrued and unpaid dividends up
               to the Redemption  Date) of shares of Series B Preferred Stock so
               called for  redemption  in trust for the holders  thereof  with a
               bank or trust  company  (having a capital  surplus and  undivided
               profits  aggregating not less than $50,000,000) in the Borough of
               Manhattan,  City and State of New York,  or in any other  city in
               which the  Corporation  at the time  shall  maintain  a  transfer
               agency with respect to such shares,  in which case the  aforesaid
               notice to  holders  of shares of Series B  Preferred  Stock to be
               redeemed shall state the date of such deposit,  shall specify the
               office of such bank or trust  company  as the place of payment of
               the  redemption  price,  and  shall  call upon  such  holders  to
               surrender the certificates representing such shares at such place
               on or after the date fixed in such redemption notice (which shall
               not be later than the  Redemption  Date)  against  payment of the
               redemption  price  (including all accrued and unpaid dividends up
               to the Redemption Date). Any interest accrued on such funds shall
               be paid to the  Corporation  from  time to time.  Any  moneys  so
               deposited  which shall  remain  unclaimed  by the holders of such
               shares of Series B Preferred  Stock at the end of two years after
               the  Redemption  Date  shall be  returned  by such  bank or trust
               company to the Corporation.

              If a notice of redemption  has been given pursuant to this Section
              5 and any  holder of shares of  Series B  Preferred  Stock  shall,
              prior to the close of business on the day preceding the Redemption
              Date, give written notice to the Corporation pursuant to Section 8
              below of the conversion of any or all of the shares to be redeemed
              held by such holder  (accompanied by a certificate or certificates
              for


                                      C-27
<PAGE>

               such shares,  duly endorsed or assigned to the  Corporation,  and
               any  necessary  transfer  tax  payment,  as required by Section 8
               below),  then such  redemption  shall not become  effective as to
               such  shares  to  be  converted,  such  conversion  shall  become
               effective  as  provided  in  Section 8 below,  and any moneys set
               aside by the  Corporation  for the  redemption  of such shares of
               converted  Series B Preferred  Stock shall  revert to the general
               funds of the Corporation.

     6.  Redemption at the Option of the Holder.

         The  Corporation,  when  requested  to do so in  writing by a holder of
         Series B  Preferred  Stock at any time  after  the  earlier  of (i) the
         eighth  anniversary  of an Issue Date  pursuant to a Call Event or (ii)
         the fifth  anniversary of an Issue Date pursuant to a Put Event,  shall
         purchase  or redeem  the share or  shares of Series B  Preferred  Stock
         identified  by such holder,  such  purchase or redemption to occur on a
         date not more than thirty days after receipt by the Corporation of such
         request,  at the Stated Value of the share or shares to be purchased or
         redeemed, plus all dividends accrued and unpaid on such share or shares
         up to the date of such purchase or redemption.

     7.  Shares to Be Retired.

         All shares of Series B Preferred Stock which shall have been issued and
         reacquired  in any  manner  by the  Corporation  (excluding,  until the
         Corporation  elects to retire  them,  shares which are held as treasury
         shares)  shall be restored  to the status of  authorized  but  unissued
         shares of Preferred Stock, without designation as to series.




                                      C-28
<PAGE>



     8.  Conversion.

         Holders of shares of Series B  Preferred  Stock shall have the right to
         convert all or a portion of such shares into shares of Common Stock, as
         follows:

     (a)  Subject to and upon  compliance with the provisions of this Section 8,
          a holder of shares of Series B  Preferred  Stock shall have the right,
          at its option, at any time after 5 Business Days after the Issue Date,
          to convert such shares into the number of fully paid and nonassessable
          shares of Common Stock obtained by dividing the aggregate Stated Value
          of such  shares  by the  Conversion  Price  (as in  effect on the date
          provided for in the last  paragraph of Section  8(b)) by  surrendering
          such shares to be converted,  such  surrender to be made in the manner
          provided in Section 8(b); provided, however, that the right to convert
          shares  called for  redemption  pursuant to Section 5 of this  article
          shall  terminate  at the close of  business on the day  preceding  the
          Redemption  Date,  unless  the  Corporation  shall  default  in making
          payment of the cash payable upon such  redemption  under  Section 5 of
          this article.  Certificates will be issued for the remaining shares of
          Series B  Preferred  Stock in any case in which  fewer than all of the
          shares of Series B Preferred  Stock  represented by a certificate  are
          converted.

     (b)  In order to exercise  the  conversion  right,  the holder of shares of
          Series  B  Preferred   Stock  to  be  converted  shall  surrender  the
          certificate or certificates representing such shares, duly endorsed or
          assigned to the Corporation or in blank, at the office of the Transfer
          Agent in the Borough of Manhattan,  City of New York,  accompanied  by
          written  notice to the  Corporation  that the holder thereof elects to
          convert  Series B  Preferred  Stock.  Unless  the shares  issuable  on
          conversion are to be issued in the same name as the name in which such
          share  of  Series  B  Preferred   Stock  is  registered,   each  share
          surrendered  for  conversion  shall be  accompanied  by instruments of
          transfer,  in form  satisfactory to the Corporation,  duly executed


                                      C-29
<PAGE>

          by the holder or such holder's duly authorized  attorney and an amount
          sufficient to pay any transfer or similar tax (or evidence  reasonably
          satisfactory  to the  Corporation  demonstrating  that such taxes have
          been paid).

          Holders of shares of Series B Preferred Stock at the close of business
          on a dividend  payment  record  date shall be  entitled to receive the
          dividend payable on such shares on the corresponding  Dividend Payment
          Date  notwithstanding  the conversion  thereof following such dividend
          payment record date and prior to such Dividend Payment Date. Except as
          provided above, the Corporation shall make no payment or allowance for
          unpaid  dividends,  whether or not in arrears,  on converted shares or
          for  dividends  on  the  shares  of  Common  Stock  issued  upon  such
          conversion.

          As promptly as  practicable  after the surrender of  certificates  for
          shares of Series B Preferred Stock as aforesaid, the Corporation shall
          issue and shall  deliver at such office to such  holder,  or on his or
          her written  order, a certificate  or  certificates  for the number of
          full  shares of Common  Stock  issuable  upon the  conversion  of such
          shares  in  accordance  with  provisions  of this  Section  8, and any
          fractional interest in respect of a share of Common Stock arising upon
          such conversion shall be settled as provided in Section 8(c).

          Each  conversion  shall be deemed to have  been  effected  immediately
          prior to the close of business  on the date on which the  certificates
          for shares of Series B Preferred Stock shall have been surrendered and
          such  notice  (and if  applicable,  payment of an amount  equal to the
          dividend  payable  on such  shares)  received  by the  Corporation  as
          aforesaid,  and the  person  or  persons  in whose  name or names  any
          certificate  or  certificates  for  shares  of Common  Stock  shall be
          issuable  upon such  conversion  shall be deemed  to have  become  the
          holder or holders of record of the shares represented  thereby at such
          time on such date and such conversion shall be at the Conversion Price
          in


                                      C-30
<PAGE>

          effect at such time on such date,  unless the stock  transfer books of
          the  Corporation  shall be closed on that  date,  in which  event such
          person  or  persons  shall be  deemed to have  become  such  holder or
          holders of record at the close of business on the next  succeeding day
          on which such stock transfer books are open, but such conversion shall
          be at the  Conversion  Price in  effect on the date  upon  which  such
          shares  shall have been  surrendered  and such notice  received by the
          Corporation.

     (c)  No  fractional  shares or scrip  representing  fractions  of shares of
          Common Stock shall be issued upon conversion of the Series B Preferred
          Stock.  Instead of any fractional  interest in a share of Common Stock
          that would otherwise be deliverable  upon the conversion of a share of
          Series B Preferred Stock,  the Corporation  shall pay to the holder of
          such share an amount in cash based upon the  Current  Market  Price of
          Common  Stock on the Trading  Day  immediately  preceding  the date of
          conversion. If more than one share shall be surrendered for conversion
          at one time by the same  holder,  the number of full  shares of Common
          Stock issuable upon conversion  thereof shall be computed on the basis
          of the  aggregate  number of shares  of  Series B  Preferred  Stock so
          surrendered.

     (d)  The Conversion Price shall be adjusted from time to time as follows:

                (1) If the  Corporation  shall  after the  Issue  Date (A) pay a
                    dividend  or make a  distribution  on its  capital  stock in
                    shares of its Common Stock,  (B)  subdivide its  outstanding
                    Common  Stock into a greater  number of shares,  (C) combine
                    its outstanding Common Stock into a smaller number of shares
                    or (D) issue any shares of capital stock by reclassification
                    of its Common Stock,  the Conversion  Price in effect at the
                    opening of business on the day next following the date fixed
                    for the  determination  of stockholders  entitled to receive
                    such dividend or  distribution or at the opening of business
                    on the day next following the day on which such


                                      C-31
<PAGE>

                    subdivision,   combination   or   reclassification   becomes
                    effective, as the case may be, shall be adjusted so that the
                    holder of any share of Series B Preferred  Stock  thereafter
                    surrendered for conversion  shall be entitled to receive the
                    number of shares of Common Stock that such holder would have
                    owned or have been  entitled to receive  after the happening
                    of any of the  events  described  above had such  share been
                    converted  immediately  prior to the record date in the case
                    of a dividend or  distribution  or the effective date in the
                    case of a subdivision,  combination or reclassification.  An
                    adjustment  made  pursuant  to this  subparagraph  (a) shall
                    become effective  immediately  after the opening of business
                    on the  day  next  following  the  record  date  (except  as
                    provided in Section 8(h) below) in the case of a dividend or
                    distribution  and shall become effective  immediately  after
                    the  opening  of  business  on the day  next  following  the
                    effective date in the case of a subdivision,  combination or
                    reclassification.

                (2) If the  Corporation  shall issue after the Issue Date rights
                    or  warrants  (in each case,  other than the  Rights) to all
                    holders  of  Common  Stock  entitling  them  (for  a  period
                    expiring  within 45 days  after the  record  date  mentioned
                    below) to subscribe for or purchase  Common Stock at a price
                    per  share  less  than the Fair  Market  Value  per share of
                    Common  Stock on the record  date for the  determination  of
                    stockholders  entitled to receive  such rights or  warrants,
                    then  the  Conversion  Price in  effect  at the  opening  of
                    business on the day next following such record date shall be
                    adjusted to equal the price  determined by  multiplying  (I)
                    the  Conversion  Price in  effect  immediately  prior to the
                    opening of business on the day next following the date fixed
                    for such determination by (II) a fraction,  the numerator of
                    which shall be the sum of (A) the number of shares of Common
                    Stock outstanding on the close of business on the date fixed
                    for such determination and (B) the number of shares that the
                    aggregate  proceeds to the


                                      C-32
<PAGE>

                    Corporation from the exercise of such rights or warrants for
                    Common Stock would  purchase at such Fair Market Value,  and
                    the  denominator of which shall be the sum of (A) the number
                    of  shares  of  Common  Stock  outstanding  on the  close of
                    business  on the date fixed for such  determination  and (B)
                    the number of additional  shares of Common Stock offered for
                    subscription   or  purchase   pursuant  to  such  rights  or
                    warrants. Such adjustment shall become effective immediately
                    after the opening of business on the day next following such
                    record date (except as provided in Section  8(h) below).  In
                    determining  whether  any  rights or  warrants  entitle  the
                    holders of Common Stock to subscribe for or purchase  shares
                    of Common Stock at less than such Fair Market  Value,  there
                    shall be taken into  account any  consideration  received by
                    the  Corporation  upon  issuance  and upon  exercise of such
                    rights  or  warrants,  the value of such  consideration,  if
                    other than cash, to be determined by the Board of Directors.

                (3) If the  Corporation  shall  distribute to all holders of its
                    Common Stock any shares of capital stock of the  Corporation
                    (other than Common Stock) or evidence of its indebtedness or
                    assets (excluding cash dividends or distributions  paid from
                    profits or surplus of the Corporation) or rights or warrants
                    (in each case,  other than the Rights) to  subscribe  for or
                    purchase any of its securities  (excluding  those rights and
                    warrants  issued to all  holders of Common  Stock  entitling
                    them for a period  expiring  within 45 days after the record
                    date referred to in subparagraph  (b) above to subscribe for
                    or purchase  Common  Stock,  which  rights and  warrants are
                    referred to in and treated under subparagraph (b) above (any
                    of the foregoing being  hereinafter in this subparagraph (3)
                    called  the  "Securities"),  then  in  each  such  case  the
                    Conversion  Price  shall be  adjusted so that it shall equal
                    the price determined by multiplying (I) the Conversion Price
                    in effect  immediately prior to the close of business on


                                      C-33
<PAGE>

                    the  date  fixed  for  the   determination  of  stockholders
                    entitled to receive  such  distribution  by (II) a fraction,
                    the  numerator  of which shall be the Fair Market  Value per
                    share of the Common Stock on the record date mentioned below
                    less the then fair market value (as  determined by the Board
                    of Directors,  whose  determination  shall be conclusive) of
                    the portion of the capital  stock or assets or  evidences of
                    indebtedness  so  distributed  or of such rights or warrants
                    applicable to one share of Common Stock, and the denominator
                    of which  shall be the Fair  Market  Value  per share of the
                    Common  Stock  on the  record  date  mentioned  below.  Such
                    adjustment shall become effective immediately at the opening
                    of business on the  Business Day next  following  (except as
                    provided  in Section  8(h)  below)  the record  date for the
                    determination  of  shareholders  entitled  to  receive  such
                    distribution.  For the  purposes  of this  clause  (c),  the
                    distribution of a Security, which is distributed not only to
                    the  holders of the  Common  Stock on the date fixed for the
                    determination of stockholders  entitled to such distribution
                    of such security, but also is distributed with each share of
                    Common  Stock  delivered  to a person  converting a share of
                    Series B  Preferred  Stock  after such  determination  date,
                    shall not  require an  adjustment  of the  Conversion  Price
                    pursuant to this clause (c);  provided  that on the date, if
                    any,  on  which a  Person  converting  a share  of  Series B
                    Preferred  Stock would no longer be entitled to receive such
                    Security  with a share  of  Common  Stock  (other  than as a
                    result  of  the  termination  of  all  such  Securities),  a
                    distribution  of such  Securities  shall be  deemed  to have
                    occurred  and the  Conversion  Price  shall be  adjusted  as
                    provided in this clause (c) (and such day shall be deemed to
                    be "the date fixed for the determination of the stockholders
                    entitled to receive such distribution" and "the record date"
                    within the meaning of the two preceding sentences).

                                      C-34
<PAGE>

                (4) No  adjustment  in the  Conversion  Price  shall be required
                    unless such adjustment  would require a cumulative  increase
                    or decrease of at least 1% in such price; provided, however,
                    that any adjustments that by reason of this subparagraph (4)
                    are not  required  to be made shall be carried  forward  and
                    taken into account in any subsequent  adjustment until made;
                    and provided, further, that any adjustment shall be required
                    and made in accordance with the provisions of this Section 8
                    (other than this  subparagraph (4)) not later than such time
                    as may be required in order to preserve the tax-free  nature
                    of a distribution  to the holders of shares of Common Stock.
                    Notwithstanding  any other provisions of this Section 8, the
                    Corporation  shall not be required to make any adjustment of
                    the  Conversion  Price  for the  issuance  of any  shares of
                    Common  Stock   pursuant  to  any  plan  providing  for  the
                    reinvestment of dividends on securities of the  Corporation.
                    All  calculations  under this Section 8 shall be made to the
                    nearest  cent (with  $.005 being  rounded  upward) or to the
                    nearest  1/10 of a share (with .05 of a share being  rounded
                    upward),  as the case may be.  Anything in this Section 8(d)
                    to the contrary  notwithstanding,  the Corporation  shall be
                    entitled,  to the  extent  permitted  by law,  to make  such
                    reductions  in the  Conversion  Price,  in addition to those
                    required by this Section 8(d), as it in its discretion shall
                    determine to be advisable in order that any stock dividends,
                    subdivision  of shares,  reclassification  or combination of
                    shares, distribution of rights or warrants to purchase stock
                    or securities, or a distribution of other assets (other than
                    cash  dividends)  hereafter  made by the  Corporation to its
                    stockholders shall not be taxable.

     (e)  If the  Corporation  shall  be a party to any  transaction  (including
          without   limitation   a  merger,   consolidation,   sale  of  all  or
          substantially all of the Corporation's  assets or  recapitalization of
          the Common Stock and  excluding  any  transaction  as to which Section
          8(d)(1)  applies) (each of the


                                      C-35
<PAGE>

          foregoing being referred to herein as a  "Transaction"),  in each case
          as a result of which shares of Common  Stock shall be  converted  into
          the right to receive stock,  securities or other  property  (including
          cash or any  combination  thereof),  each share of Series B  Preferred
          Stock  which  is not  converted  into  the  right  to  receive  stock,
          securities or other property in connection with such Transaction shall
          thereafter be convertible into the kind and amount of shares of stock,
          securities  and  other  property  (including  cash or any  combination
          thereof)  receivable upon the  consummation  of such  Transaction by a
          holder of that  number of shares or fraction  thereof of Common  Stock
          into  which  one  share of Series B  Preferred  Stock was  convertible
          immediately prior to such Transaction,  assuming such holder of Common
          Stock (i) is not a Person with which the  Corporation  consolidated or
          into which the Corporation merged or which merged into the Corporation
          or to  which  such  sale or  transfer  was  made,  as the  case may be
          ("Constituent  Person"),  or an affiliate of a Constituent  Person and
          (ii) failed to exercise his rights of election, if any, as to the kind
          or amount of stock,  securities  and other property  (including  cash)
          receivable upon such Transaction  (provided that if the kind or amount
          of stock,  securities and other property  (including  cash) receivable
          upon such  Transaction  is not the same for each share of Common Stock
          of the Corporation held immediately prior to such Transaction by other
          than a  Constituent  Person or an affiliate  thereof and in respect of
          which  such  rights  of  election   shall  not  have  been   exercised
          ("non-electing  share"), then for the purpose of this Section 8(e) the
          kind and amount of stock,  securities  and other  property  (including
          cash)  receivable  upon such  Transaction by each  non-electing  share
          shall be deemed to be the kind and amount so  receivable  per share by
          the plurality of the non-electing  shares).  The Corporation shall not
          be a party to any Transaction unless the terms of such Transaction are
          consistent  with the  provisions of this Section 8(e) and it shall not
          consent  or agree  to the  occurrence  of any  Transaction  until  the
          Corporation


                                      C-36
<PAGE>

          has entered into an agreement with the successor or purchasing entity,
          as the case may be,  for the  benefit  of the  holders of the Series B
          Preferred Stock that will contain  provisions  enabling the holders of
          the Series B  Preferred  Stock  that  remains  outstanding  after such
          Transaction to convert into the  consideration  received by holders of
          Common Stock at the Conversion  Price in effect  immediately  prior to
          such Transaction.  The provisions of this Section 8(e) shall similarly
          apply to successive Transactions.

           (f)  If:

                 (1)  the  Corporation  shall  declare a dividend  (or any other
                      distribution)  on the Common Stock (other than in cash out
                      of profits or surplus and other than the Rights); or

                 (2)  the  Corporation  shall  authorize  the  granting  to  the
                      holders of the Common  Stock of rights or warrants  (other
                      than the Rights) to  subscribe  for or purchase any shares
                      of any class or any other  rights or warrants  (other than
                      the Rights); or

                 (3)  there shall be any  reclassification  of the Common  Stock
                      (other than an event to which Section 8(d)(1)  applies) or
                      any  consolidation or merger to which the Corporation is a
                      party and for which  approval of any  stockholders  of the
                      Corporation is required, or the sale or transfer of all or
                      substantially  all of the assets of the  Corporation as an
                      entirety; or

                 (4)  there   shall   occur   the   voluntary   or   involuntary
                      liquidation, dissolution or winding up of the Corporation,
                      then the  Corporation  shall  cause  to be filed  with the
                      Transfer Agent and shall cause to be mailed to the holders
                      of  shares  of the  Series  B  Preferred  Stock  at  their
                      addresses   as  shown  on  the   stock   records   of  the
                      Corporation, as promptly as possible, but at least 15 days
                      prior to the  applicable  date  hereinafter  specified,  a
                      notice  stating  (A) the


                                      C-37
<PAGE>

                    date on which a record  is to be taken  for the  purpose  of
                    such dividend,  distribution or rights or warrants, or, if a
                    record is not to be taken,  the date as of which the holders
                    of Common  Stock of record to be entitled to such  dividend,
                    distribution  or rights or warrants are to be  determined or
                    (B) the date on which such reclassification,  consolidation,
                    merger, sale, transfer, liquidation,  dissolution or winding
                    up is expected to become effective, and the date as of which
                    it is expected  that holders of Common Stock of record shall
                    be  entitled to exchange  their  shares of Common  Stock for
                    securities or other property,  if any, deliverable upon such
                    reclassification,  consolidation,  merger,  sale,  transfer,
                    liquidation,  dissolution  or winding up. Failure to give or
                    receive such notice or any defect  therein  shall not affect
                    the  legality or validity of the  proceedings  described  in
                    this Section 8.

           (g)   Whenever the Conversion  Price is adjusted as herein  provided,
                 the Corporation  shall promptly file with the Transfer Agent an
                 officer's  certificate setting forth the Conversion Price after
                 such  adjustment  and setting  forth a brief  statement  of the
                 facts  requiring such  adjustment  which  certificate  shall be
                 prima facie  evidence of the  correctness  of such  adjustment.
                 Promptly after delivery of such  certificate,  the  Corporation
                 shall  prepare a notice of such  adjustment  of the  Conversion
                 Price  setting  forth  the  adjusted  Conversion  Price and the
                 effective date of such adjustment and shall mail such notice of
                 such  adjustment of the Conversion  Price to the holder of each
                 share of Series B Preferred Stock at such holder's last address
                 as shown on the stock records of the Corporation.

           (h)   In any case in which  Section 8(d)  provides that an adjustment
                 shall become  effective on the day next following a record date
                 for an event, the Corporation may defer until the occurrence of
                 such  event (A)  issuing to the holder of any share of


                                      C-38
<PAGE>

                    Series B Preferred  Stock  converted  after such record date
                    and  before  the  occurrence  of such  event the  additional
                    shares of Common  Stock  issuable  upon such  conversion  by
                    reason of the  adjustment  required  by such  event over and
                    above the Common Stock issuable upon such conversion  before
                    giving  effect  to such  adjustment  and (B)  paying to such
                    holder any amount in cash in lieu of any  fraction  pursuant
                    to Section 8(c).

           (i)   For  purposes of this Section 8, the number of shares of Common
                 Stock at any time  outstanding  shall not include any shares of
                 Common  Stock then  owned or held by or for the  account of the
                 Corporation.  The Corporation  shall not pay a dividend or make
                 any distribution on shares of Common Stock held in the treasury
                 of the Corporation.

           (j)   There shall be no adjustment of the Conversion Price in case of
                 the   issuance   of  any   stock  of  the   Corporation   in  a
                 reorganization, acquisition or other similar transaction except
                 as  specifically  set forth in this Section 8. If any action or
                 transaction  would require  adjustment of the Conversion  Price
                 pursuant to more than one paragraph of this Section 8, only one
                 adjustment  shall  be made  and  such  adjustment  shall be the
                 amount of adjustment that has the highest absolute value.

           (k)   If the Corporation  shall take any action  affecting the Common
                 Stock,  other than action  described in this Section 8, that in
                 the  opinion  of  the  Board  of  Directors  would   materially
                 adversely  affect the  conversion  rights of the holders of the
                 shares of Series B Preferred  Stock,  the Conversion  Price for
                 the Series B  Preferred  Stock may be  adjusted,  to the extent
                 permitted by law, in such manner,  if any, and at such time, as
                 the Board of  Directors  may  determine  to be equitable in the
                 circumstances.

           (l)   The Corporation covenants that it will at all times reserve and
                 keep  available,  free  from


                                      C-39
<PAGE>

                    preemptive  rights,  out of the aggregate of its  authorized
                    but unissued  shares of Common Stock or its issued shares of
                    Common Stock held in its treasury,  or both, for the purpose
                    of effecting conversion of the Series B Preferred Stock, the
                    full number of shares of Common Stock  deliverable  upon the
                    conversion of all  outstanding  shares of Series B Preferred
                    Stock  not  theretofore  converted.  For  purposes  of  this
                    Section  8.(l).,  the number of shares of Common  Stock that
                    shall be deliverable  upon the conversion of all outstanding
                    shares of Series B  Preferred  Stock shall be computed as if
                    at the time of computation all such outstanding  shares were
                    held by a single holder.

                 The  Corporation  covenants  that any  shares of  Common  Stock
                 issued upon conversion of the Series B Preferred Stock shall be
                 validly issued,  fully paid and  non-assessable.  Before taking
                 any  action  that  would  cause  an  adjustment   reducing  the
                 Conversion  Price  below the  then-par  value of the  shares of
                 Common  Stock  deliverable  upon  conversion  of the  Series  B
                 Preferred Stock, the Corporation will take any corporate action
                 that, in the opinion of its counsel,  may be necessary in order
                 that the Corporation  may validly and legally issue  fully-paid
                 and  nonassessable  shares  of  Common  Stock at such  adjusted
                 Conversion Price.

           (m)   The  Corporation  will  pay any and all  documentary  stamp  or
                 similar issue or transfer taxes payable in respect of the issue
                 or delivery of shares of Common  Stock or other  securities  or
                 property on conversion of the Series B Preferred Stock pursuant
                 hereto;  provided,  however,  that the Corporation shall not be
                 required  to pay any tax that may be  payable in respect of any
                 transfer  involved in the issue or delivery of shares of Common
                 Stock or other securities or property in a name other than that
                 of the holder of the Series B Preferred  Stock to be  converted
                 and no such issue or  delivery  shall be made  unless and until
                 the person  requesting  any issue or  delivery  has paid to the
                 Corporation the amount of any such tax or  established,  to the
                 reasonable  satisfaction of the


                                      C-40
<PAGE>

                    Corporation, that such tax has been paid.

     9.  Ranking.

         Any  class or  series  of stock of the  Corporation  shall be deemed to
rank:

         (a)   prior to the  Series B  Preferred  Stock,  as to the  payment  of
               dividends  and as to  distributions  of assets upon  liquidation,
               dissolution or winding up, if the holders of such class or series
               shall be  entitled  to the  receipt of  dividends  and of amounts
               distributable  upon  liquidation,  dissolution  or  winding up in
               preference  or  priority  to the  holders  of Series B  Preferred
               Stock;

         (b)   on a parity with the Series B Preferred  Stock, as to the payment
               of dividends and as to distribution  of assets upon  liquidation,
               dissolution  or winding up,  whether or not the  dividend  rates,
               dividend  payment dates or redemption or  liquidation  prices per
               share  thereof be different  from those of the Series B Preferred
               Stock if the  holders  of such  class of stock or series  and the
               Series B  Preferred  Stock  shall be  entitled  to the receipt of
               dividends  and  of  amounts   distributable   upon   liquidation,
               dissolution  or  winding  up in  proportion  to their  respective
               amounts of accrued and unpaid  dividends per share or liquidation
               preferences,  without  preference or priority one over the other;
               and

         (c)   junior to the  Series B  Preferred  Stock,  as to the  payment of
               dividends or as to the  distribution of assets upon  liquidation,
               dissolution  or  winding  up, if such  stock or  series  shall be
               Common  Stock or Series A  Preferred  Stock or if the  holders of
               Series  B  Preferred  Stock  shall  be  entitled  to  receipt  of
               dividends   or  of  amounts   distributable   upon   liquidation,
               dissolution  or  winding  up in  preference  or  priority  to the
               holders of shares of such stock or series.



                                      C-41
<PAGE>



     10.  Voting.

         (a) The  holders of shares of Series B  Preferred  Stock shall have the
following voting rights:

     1.   Subject to the provision for adjustment  hereinafter  set forth,  each
          share of Series B Preferred  Stock shall entitle the holder thereof to
          199 votes on all matters  submitted to a vote of the  shareholders  of
          the Corporation.  In the event the Corporation shall at any time after
          the Issue Date (i) declare any  dividend  on Common  Stock  payable in
          shares of Common Stock,  (ii) subdivide the outstanding  Common Stock,
          or (iii) combine the outstanding Common Stock into a smaller number of
          shares,  then in each such case the number of votes per share to which
          holders  of  shares  of  Series  B  Preferred   Stock  were   entitled
          immediately  prior to such event shall be adjusted by multiplying such
          number by a fraction the numerator of which is the number of shares of
          Common  Stock  outstanding   immediately  after  such  event  and  the
          denominator of which is the number of shares of Common Stock that were
          outstanding immediately prior to such event.

     2.   Except as otherwise  provided  herein or by law, the holders of shares
          of Series B Preferred  Stock and the holders of shares of Common Stock
          shall vote together as one class on all matters submitted to a vote of
          shareholders of the Corporation.

          (b)  Unless  the  affirmative  vote or  consent  of the  holders  of a
               greater  number of shares  shall  then be  required  by law,  the
               consent  of  the  holders  of at  least  66  2/3%  of  all of the
               outstanding  shares of Series B Preferred  Stock (in  addition to
               any vote  required by the terms of any other  affected  series of
               Preferred  Stock  ranking on a parity with the Series B Preferred
               Stock as to dividends and amounts distributable upon liquidation,
               dissolution and winding up), given in person or by proxy,  either
               in writing or by a vote at a meeting  called


                                      C-42
<PAGE>

               for the  purpose,  at which  the  holders  of  shares of Series B
               Preferred  Stock and such other series of  Preferred  Stock shall
               vote together as a single class without  regard to series,  shall
               be  necessary  for  authorizing,   effecting  or  validating  the
               amendment,  alteration or repeal of any of the  provisions of the
               Articles  of  Incorporation  or  of  any  certificate  amendatory
               thereof or  supplemental  thereto  (including any  Certificate of
               Designations,  Preferences  and  Rights or any  similar  document
               relating to any series of Preferred Stock) which would materially
               adversely affect the preferences, rights, powers or privileges of
               the  Series  B  Preferred  Stock;  provided,  however,  that  the
               amendment of the provisions of the Articles of  Incorporation  so
               as to authorize or create,  or to increase the authorized  amount
               of,  any  Junior  Stock or any  shares of any class  ranking on a
               parity with the Series B  Preferred  Stock shall not be deemed to
               materially  adversely affect the preferences,  rights,  powers or
               privileges of Series B Preferred Stock.

          (c)  Unless  the  affirmative  vote or  consent  of the  holders  of a
               greater  number of shares  shall  then be  required  by law,  the
               consent  of  the  holders  of at  least  66  2/3%  of  all of the
               outstanding  shares of Series B Preferred  Stock (in  addition to
               any vote  required by the terms of any other  series of Preferred
               Stock ranking on a parity with the Series B Preferred Stock as to
               dividends and amounts distributable upon liquidation, dissolution
               or winding up), given in person or by proxy, either in writing or
               by a vote at a  meeting  called  for the  purpose  at  which  the
               holders  of  shares of Series B  Preferred  Stock and such  other
               series of Preferred  Stock shall vote  together as a single class
               without  regard to series,  shall be necessary  for  authorizing,
               effecting or validating the creation,  authorization  or issue of
               any shares of any class of stock of the Corporation ranking prior
               to  the  Series  B  Preferred  Stock  as  to  dividends  or  upon
               liquidation,  dissolution or winding up, or the  reclassification
               of any authorized  stock of the  Corporation  into any such prior
               shares,  or  the 


                                      C-43
<PAGE>

               creation, authorization or issuance of any obligation or security
               convertible  into or  evidencing  the right to purchase  any such
               prior shares.

          (d)  For purposes of the provisions of Sections 10(b) and 10(c),  each
               share of Series B  Preferred  Stock  shall  have one (1) vote per
               share.

         (e)   Except as set forth herein,  holders of Series B Preferred  Stock
               shall have no special  voting  rights and their consent shall not
               be required  (except to the extent they are entitled to vote with
               holders  of Common  Stock as set forth  herein)  for  taking  any
               corporate action.

     11.  Record Holders.

          The  Corporation  and the Transfer Agent may deem and treat the record
          holder  of any  shares  of  Series B  Preferred  Stock as the true and
          lawful owner thereof for all purposes, and neither the Corporation nor
          the Transfer Agent shall be affected by any notice to the contrary.


Article V

   
The corporate  office shall be in Hartford or in such other town in  Connecticut
as the Board of Directors may determine.  The annual meeting of the shareholders
shall be held at such time and place  within  the state and upon such  notice as
may be determined  from time to time either by or in accordance with the bylaws.
At all  meetings  of the  shareholders  and  subject,  in the case of  preferred
shareholders,  to such  provisions  concerning  voting  rights  as the  Board of
Directors may determine pursuant to the authority granted in Article III hereof,
each  shareholder  shall be entitled  to vote in person or by an  attorney  duly
authorized by a written proxy and each share of common stock represented at such
meetings shall be entitled to one vote.
    




                                      C-44
<PAGE>



Article VI

The  business  property  and affairs of the  Corporation  shall be managed by or
under  the  direction  of a Board  of  Directors  consisting  of the  number  of
directors fixed from time to time by resolution  adopted by the affirmative vote
of a majority of the entire Board of Directors.  The directors  shall be divided
into three classes, designated Class I, Class II and Class III. Each class shall
consist,  as nearly as may be  possible,  of  one-third  of the total  number of
directors  constituting the entire Board of Directors.  The directors  initially
elected to Class I shall  serve for a term  expiring  at the  annual  meeting of
shareholders  next  following the end of the calendar  year 1997,  the directors
initially  elected  to Class II shall  serve for a term  expiring  at the annual
meeting of shareholders next following the end of the calendar year 1998 and the
directors  initially  elected to the third class shall serve for a term expiring
at the annual  meeting of  shareholders  next  following the end of the calendar
year 1998. At each annual  meeting of  shareholders,  successors to the class of
directors  whose  term  expires  at the annual  meeting  shall be elected  for a
three-year term. If the number of directors is changed, any increase or decrease
shall be apportioned among the classes so as to maintain the number of directors
in each class as nearly equal as possible,  and any  additional  director of any
class elected to fill a vacancy  resulting  from an increase in such class shall
hold  office  for a term that shall  coincide  with the  remaining  term of that
class,  but in no case will a reduction  of the number of  directors  remove any
director in office or shorten  the term of any  incumbent  director.  A director
shall  hold  office  until  the  annual  meeting  for the year in which his term
expires and until his  successor  shall be elected and shall  qualify,  subject,
however,  to prior  death,  resignation,  removal  from office or order of court
that, by reason of  incompetency  or any other lawful  cause,  he is no longer a
director in office.

Any  vacancy on the Board of  Directors  that  results  from an  increase in the
number of directors may be filled by the concurring vote of directors  holding a
majority of the directorships, which number of directorships shall be the number
prior to the vote on the increase,  and any other vacancy occurring in the Board
of Directors  may be filled by 


                                      C-45
<PAGE>

concurring  vote of a  majority  of the  remaining  directors  then  in  office,
although  less than a quorum,  or by a sole  remaining  director.  Any  director
elected  to fill a vacancy  not  resulting  from an  increase  in the  number of
directors shall have the same remaining term as that of his predecessor.

Any director or the entire  Board of Directors  may be removed only for cause by
the affirmative vote of eighty percent (80%) of the votes entitled to be cast by
the holders of all then  outstanding  shares of voting stock of the Corporation,
voting together as a single class.  For the purposes of this Article VI, "cause"
shall be defined as (a) a final  non-appealable  order of conviction of a felony
involving  moral  turpitude by a court of competent  jurisdiction  in the United
States or (b) a final non-appealable order of a court of competent  jurisdiction
in the United States finding gross  negligence in the performance of duties as a
director or officer of the Corporation.

Notwithstanding  the foregoing,  whenever the holders of any one or more classes
or series of  preferred  stock issued by the  Corporation  shall have the right,
voting separately by class or series, to elect directors at an annual or special
meeting of shareholders,  the election, term of office, filling of vacancies and
other  features  of such  directorships  shall be governed by the terms of these
Articles applicable thereto,  and such directors so elected shall not be divided
into classes pursuant to this Article VI unless expressly provided by such term.

Notwithstanding  any other  provisions  of these  Articles  or the bylaws of the
Corporation (and  notwithstanding  the fact that a lesser percentage or separate
class  vote  may be  specified  by law,  these  Articles  or the  bylaws  of the
Corporation) the affirmative vote of the holders of not less than eighty percent
(80%) of the votes  entitled to be cast by the  holders of all then  outstanding
shares of voting stock of the  Corporation,  voting  together as a single class,
shall be required to amend or repeal, or adopt any provisions  inconsistent with
this Article VI; provided,  however, that this paragraph shall not apply to, and
such eighty percent (80%) vote shall not be required for any  amendment,  repeal
or adoption  recommended  by  three-quarters  of the entire Board if all of such
directors  are  persons who


                                      C-46
<PAGE>

were  members  of the  Board  at  the  annual  meeting  of  shareholders  of the
Corporation held prior to the proposal of any such amendment, repeal or adoption
or persons nominated by such members.

Article VII

A.   In addition to any  affirmative  vote required by law or these  Articles or
     the bylaws of the Corporation,  and except as otherwise  expressly provided
     in Section B of this Article VII, a Business  Combination  (as  hereinafter
     defined) shall require the affirmative vote of not less than eighty percent
     (80%)  of the  votes  entitled  to be  cast  by  the  holders  of all  then
     outstanding  shares  of  Voting  Stock  (as  hereinafter  defined),  voting
     together  as a single  class.  Such  affirmative  vote  shall  be  required
     notwithstanding  the fact  that no vote may be  required,  or that a lesser
     percentage  or  separate  class  vote  may be  specified,  by law or in any
     agreement with any national securities exchange or otherwise.

B.   The  provisions of Section A of this Article VII shall not be applicable to
     any particular Business  Combination,  and such Business  Combination shall
     require only such affirmative vote, if any, as is required by law or by any
     other provision of these Articles or the bylaws of the Corporation,  or any
     agreement with any national securities  exchange,  if all of the conditions
     specified in either of the following Paragraphs 1 or 2 are met:

    1. The Business  Combination shall have been approved by two-thirds (whether
       such  approval  is made  prior to or  subsequent  to the  acquisition  of
       beneficial  ownership  of the  Voting  Stock that  caused the  Interested
       Shareholder,  as hereinafter defined to become an Interested Shareholder)
       of the Continuing Directors, as hereinafter defined.

    2. All of the following conditions shall have been met:

       (a)   The  aggregate  amount  of  cash  and the  Fair  Market  Value  (as
             hereinafter  defined)  as of the  date of the  consummation  of the
             Business  Combination  of  consideration  other  than  cash  to  be
             received  per share by  holders  of Common  Stock in such  Business



                                      C-47
<PAGE>

             Combination   shall  be  at  least  equal  to  the  highest  amount
             determined under clauses (i), (ii), (iii) and (iv) below:

   
             (i) (if  applicable)  the highest per share  price  (including  any
                 brokerage  commissions,  transfer taxes and soliciting dealers'
                 fees) paid by or on behalf of the  Interested  Shareholder  for
                 any share of Common Stock in connection with the acquisition by
                 the Interested Shareholder of beneficial ownership of shares of
                 Common Stock within the two-year  period  immediately  prior to
                 the  first  public   announcement  of  the  proposed   Business
                 Combination (the "Announcement Date");
    

              (ii)the  Fair  Market  Value  per  share  of  Common  Stock on the
                  Announcement  Date or on the  date  on  which  the  Interested
                  Shareholder    became   an   Interested    Shareholder    (the
                  "Determination Date"), whichever is higher;

             (iii)(if  applicable)  the price per share equal to the Fair Market
                  Value per share of Common  Stock  determined  pursuant  to the
                  immediately  preceding clause (ii), multiplied by the ratio of
                  (x) the  highest  per share  price  (including  any  brokerage
                  commissions, transfer taxes and soliciting dealers' fees) paid
                  by or on behalf of the Interested Shareholder for any share of
                  Common  Stock  in  connection  with  the  acquisition  by  the
                  Interested  Shareholder  of beneficial  ownership of shares of
                  Common Stock within the two-year period  immediately  prior to
                  the  Announcement  Date to (y) the Fair Market Value per share
                  of Common  Stock on the first day in such  two-year  period on
                  which the Interested Shareholder acquired beneficial ownership
                  of any share of Common Stock; and

             (iv) The Corporation's net income per share of Common Stock for the
                  four full consecutive  fiscal quarters  immediately  preceding
                  the  Announcement  Date,  multiplied by the higher of the then
                  price/earnings  multiple (if any) with respect to common stock
                  of such Interested  Shareholder or the highest  price/earnings
                  multiple  with  respect to


                                      C-48
<PAGE>

                    Common  Stock  within  the   two-year   period   immediately
                    preceding  the   Announcement   Date  (such   price/earnings
                    multiples  being  determined  as  customarily  computed  and
                    reported in the financial community);

       (b)   The  aggregate  amount of cash and the Fair Market  Value as of the
             date  of  the   consummation   of  the  Business   Combination   of
             consideration  other than cash to be received  per share by holders
             of shares of any class or series of  outstanding  Capital Stock (as
             hereinafter  defined),  other than Common Stock,  shall be at least
             equal to the highest  amount  determined  under clauses (i),  (ii),
             (iii) and (iv) below:

             (i) (if  applicable)  the highest per share  price  (including  any
                 brokerage  commissions,  transfer taxes and soliciting dealers'
                 fees) paid by or on behalf of the  Interested  Shareholder  for
                 any  share  of  such  class  or  series  of  Capital  Stock  in
                 connection with the  acquisition by the Interested  Shareholder
                 of  beneficial  ownership  of shares of such class or series of
                 Capital Stock within the two-year period  immediately  prior to
                 the Announcement Date;

           (ii) the Fair  Market  Value  per  share of such  class or  series of
                Capital Stock on the Announcement  Date or on the  Determination
                Date, whichever is higher;

          (iii) (if  applicable)  the price per share  equal to the Fair  Market
                Value  per  share  of such  class or  series  of  Capital  Stock
                determined  pursuant to the immediately  preceding  clause (ii),
                multiplied  by the  ratio of (x) the  highest  per  share  price
                (including  any  brokerage   commissions,   transfer  taxes  and
                soliciting dealers' fees) paid by or on behalf of the Interested
                Shareholder for any share of such class or series of the Capital
                Stock in  connection  with  the  acquisition  by the  Interested
                Shareholder  of beneficial  ownership of shares of such class or
                series of Capital Stock within the two-year  period  immediately
                prior to the Announcement  Date to (y) the Fair Market Value per
                share of such class or series of Capital  Stock on


                                      C-49
<PAGE>

               the first  day in such  two-year  period on which the  Interested
               Shareholder  acquired  beneficial  ownership of any share of such
               class or series of Capital Stock; and

          (iv)  (if  applicable)  the highest  preferential  amount per share to
                which the  holders  of shares of such class or series of Capital
                Stock  would  be  entitled  in the  event  of any  voluntary  or
                involuntary  liquidation,  dissolution  or  winding  up  of  the
                affairs of the  Corporation,  regardless of whether the Business
                Combination to be consummated constitutes such an event.

           The provision of this paragraph 2(b) shall be required to be met with
           respect  to every  class or  series  of  outstanding  Capital  Stock,
           whether or not the Interested  Shareholder  has  previously  acquired
           beneficial ownership of any shares of a particular class or series of
           Capital Stock.

       (c)   The  consideration  to be received by holders of a particular class
             or series of  outstanding  Capital Stock shall be in cash or in the
             same  form as  previously  has  been  paid by or on  behalf  of the
             Interested  Shareholder  in connection  with its direct or indirect
             acquisition  of  beneficial  ownership  of shares of such  class or
             series of Capital Stock. If the consideration so paid for shares of
             any class or series of Capital Stock varied as to form, the form of
             consideration  for such class or series of Capital  Stock  shall be
             either cash or the form used to acquire beneficial ownership of the
             largest  number of shares of such class or series of Capital  Stock
             previously acquired by the Interested Shareholder.

          (d)  After  such  Interested  Shareholder  has  become  an  Interested
               Shareholder  and  prior  to the  consummation  of  such  Business
               Combination:   (i)  except  as  approved  by  two-thirds  of  the
               Continuing Directors, there shall have been no failure to declare
               and pay at the regular date therefor any full quarterly dividends
               (whether or not cumulative)  payable in accordance with the terms
               of any outstanding  Capital Stock;  (ii) there shall have been no
               reduction  in the  annual  rate


                                      C-50
<PAGE>

               of  dividends  paid on the Common  Stock  (except as necessary to
               reflect any stock split,  stock  dividend or  subdivision  of the
               Common Stock), except as approved by two-thirds of the Continuing
               Directors;  (iii) there shall have been an increase in the annual
               rate of  dividends  paid on the  Common  Stock  as  necessary  to
               reflect fully any  reclassification  (including any reverse stock
               split),   recapitalization,   reorganization   or   any   similar
               transaction  that  has the  effect  of  reducing  the  number  of
               outstanding  shares of Common  Stock,  unless  the  failure so to
               increase  such  annual  rate is  approved  by  two-thirds  of the
               Continuing Directors;  and (iv) such Interested Shareholder shall
               not have become the beneficial owner of any additional  shares of
               Capital Stock except as part of the  transaction  that results in
               such Interested  Shareholder  becoming an Interested  Shareholder
               and except in a transaction  that,  after giving effect  thereto,
               would not result in any increase in the Interested  Shareholder's
               percentage beneficial ownership of any class or series of Capital
               Stock.

          (e)  After  such  Interested  Shareholder  has  become  an  Interested
               Shareholder,  such Interested Shareholder shall not have received
               the benefit,  directly or indirectly (except proportionately as a
               shareholder  of  this  Corporation),   of  any  loans,  advances,
               guarantees,  pledges  or other  financial  assistance  or any tax
               credits or other tax  advantages  provided  by this  Corporation,
               whether in  anticipation  of or in connection  with such Business
               Combination or otherwise.

          (f)  A proxy or information statement describing the proposed Business
               Combination and complying with the requirements of the Securities
               Exchange  Act of 1934 and the  rules and  regulations  thereunder
               (the "Act") (or any  subsequent  provisions  replacing  such Act,
               rules and  regulations)  or the insurance laws and regulations of
               the State of Connecticut,  if applicable,  shall be mailed to all
               shareholders  of the  Corporation  at least 30 days  prior to the
               consummation  of such Business  Combination  (whether or not such
               proxy or information  statement is required 


                                      C-51
<PAGE>

               by law to be mailed).  The proxy or information  statement  shall
               contain on the first page  thereof,  in a  prominent  place,  any
               statement  as to  the  advisability  (or  inadvisability)  of the
               Business  Combination  that the Continuing  Directors,  or any of
               them,  may choose to make and, if deemed  advisable by a majority
               of the Continuing Directors, the opinion of an investment banking
               firm selected by a majority of the Continuing Directors as to the
               fairness (or not) of the terms of the Business Combination from a
               financial point of view to the holders of the outstanding  shares
               of Capital Stock other than the  Interested  Shareholder  and its
               Affiliates  or  Associates   (as   hereinafter   defined),   such
               investment  banking  firm  to be  paid a  reasonable  fee for its
               services by the Corporation.

   
          (g)  Such  Interested  Stockholder  shall not have made or caused  the
               making  of any  major  change in the  Corporation's  business  or
               equity  capital  structure  without the approval of a majority of
               the continuing Directors.
    

C.  For the purposes of this Article VII:

     1.  The term "Business Combination" shall mean:

         (a)   any merger or  consolidation of the Corporation or any Subsidiary
               (as hereinafter  defined) with (i) any Interested  Shareholder or
               (ii) any other  corporation  (whether or not itself an Interested
               Shareholder) which is or after such merger or consolidation would
               be an Affiliate or Associate of an Interested Shareholder; or

         (b)   any sale, lease, exchange,  mortgage,  pledge,  transfer or other
               disposition (in one transaction or a series of transactions) with
               any  Interested  Shareholder or any Affiliate or Associate of any
               Interested Shareholder involving any assets or securities of this
               Corporation,  any subsidiary or any Interested Shareholder or any
               Affiliate or Associate of any  Interested  Shareholder  having an
               aggregate Fair Market Value of $10,000,000 or more; or

                                      C-52
<PAGE>

         (c)   the  adoption  of any plan or  proposal  for the  liquidation  or
               dissolution  of the  Corporation  proposed  by or on behalf of an
               Interested  Shareholder  or any  Affiliate  or  Associate  of any
               Interested Shareholder; or

         (d)   any  reclassification of securities  (including any reverse stock
               split), or recapitalization of the Corporation,  or any merger or
               consolidation  of the Corporation with any of its Subsidiaries or
               any other transaction (whether or not with or otherwise involving
               an  Interested  Shareholder)  that has the  effect,  directly  or
               indirectly, of increasing the proportionate share of any class or
               series of  Capital  Stock,  or any  securities  convertible  into
               Capital Stock or into equity  securities of any Subsidiary,  that
               is  beneficially  owned  by  any  Interested  Shareholder  or any
               Affiliate or Associate of any Interested Shareholder: or

         (e)   any agreement,  contract or other  arrangement  providing for any
               one or more of the actions specified in the foregoing clauses (a)
               to (d).

   
     2.  The  term  "Capital   Stock"  shall  mean  all  capital  stock  of  the
         Corporation authorized to be issued from time to time under Article III
         of these  Articles,  and the term "Voting Stock" shall mean all Capital
         Stock  which by its  terms  may be voted on all  matters  submitted  to
         shareholders of the Corporation generally.
    

     3.  The term "person" shall mean any individual, firm, corporation or other
         entity  and shall  include  any group  comprised  of any person and any
         other  person with whom such person or any  Affiliate  or  Associate of
         such person has any agreement,  arrangement or understanding,  directly
         or  indirectly,  for the  purpose  of  acquiring,  holding,  voting  or
         disposing of Capital Stock.

     4.  The term "Interested Shareholder" shall mean any person (other than the
         Corporation  or any  Subsidiary  and  other  than  any  profit-sharing,
         employee  stock  ownership  or  other  employee  benefit  plan  of  the
         Corporation  or any  Subsidiary  or any  trustee of or


                                      C-53
<PAGE>

          fiduciary  with respect to any such plan when acting in such capacity)
          who (a) is the  beneficial  owner of  Voting  Stock  representing  ten
          percent (10%) or more of the votes  entitled to be cast by the holders
          of all then outstanding  shares of Voting Stock or (b) is an Affiliate
          or  Associate of the  Corporation  and at any time within the two-year
          period  immediately  prior to the date in question was the  beneficial
          owner of Voting Stock  representing  ten percent  (10%) or more of the
          votes  entitled  to be cast by the  holders  of all  then  outstanding
          shares of Voting Stock.

     5.   A person shall be a "beneficial  owner" of any Capital Stock (a) which
          such person or any of its Affiliates or Associates  beneficially owns,
          directly or indirectly; (b) which such person or any of its Affiliates
          or Associates  has,  directly or indirectly,  (i) the right to acquire
          (whether such right is exercisable  immediately or subject only to the
          passage  of  time),   pursuant  to  any   agreement,   arrangement  or
          understanding or upon the exercise of conversion  rights,  convertible
          securities,  exchange rights,  warrants or options,  or otherwise,  or
          (ii) the  right to vote  pursuant  to any  agreement,  arrangement  or
          understanding or upon the exercise of conversion  rights,  convertible
          securities,  exchange rights,  warrants or options,  or otherwise,  or
          (ii) the  right to vote  pursuant  to any  agreement,  arrangement  or
          understanding;  or (c)  which  are  beneficially  owned,  directly  or
          indirectly,  by any other  person with which such person or any of its
          Affiliates   or  Associates   has  any   agreement,   arrangement   or
          understanding  for  the  purpose  of  acquiring,  holding,  voting  or
          disposing  of any  shares  of  Capital  Stock.  For  the  purposes  of
          determining whether a person is an Interested  Shareholder pursuant to
          paragraph 4 of this  Section C, the number of shares of Capital  Stock
          deemed to be  outstanding  shall include  shares  deemed  beneficially
          owned  by such  person  through  application  of  paragraph  5 of this
          Section C, but shall not  include  any other  shares of Capital  Stock
          that  may be  issuable  pursuant  to  any  agreement,  arrangement  or
          understanding,  or upon  exercise of  conversion  rights,  warrants or
          options, or otherwise.

                                      C-54
<PAGE>

     6.  The  terms  "Affiliate"  and  "Associate"  shall  have  the  respective
         meanings  ascribed  to such  terms in Rule  12b-2  under  the Act as in
         effect  on March 1,  1984 (the  term  "registrant"  in said Rule  12b-2
         meaning in this case the Corporation).

     7.  The term "Subsidiary"  means any corporation of which a majority of any
         class of equity  security  is  beneficially  owned by the  Corporation;
         provided,   however,  that  for  the  purposes  of  the  definition  of
         Interested  Shareholder set forth in paragraph 4 of this Section C, the
         term "Subsidiary"  shall mean only a corporation of which a majority of
         each class of equity security is beneficially owned by the Corporation.

     8.  The  term  "Continuing  Director"  means  any  member  of the  board of
         directors  of the  Corporation  (the  "Board")  while such  person is a
         member  of  the  Board,  who  is  not  an  Affiliate  or  Associate  or
         representative  of the Interested  Shareholder  and was a Member of the
         Board  prior to the time  that the  Interested  Shareholder  became  an
         Interested  Shareholder,  and any  successor of a Continuing  Director,
         while such successor is a member of the Board,  who is not an Affiliate
         or Associate or  representative  of the Interested  Shareholder  and is
         recommended or elected to succeed the Continuing Director by a majority
         of Continuing Directors.

     9.   The term "Fair Market Value" means (a) in the case of cash, the amount
          of such cash;  (b) in the case of stock,  the  highest  closing  sales
          price  during  the 30-day  period  immediately  preceding  the date in
          question of a share of such stock on the  Composite  Tape for New York
          Stock  Exchange-Listed  Stocks, or, if such stock is not quoted on the
          Composite  Tape, on the New York Stock  Exchange,  or if such stock is
          not listed on such Exchange, on the principal United States securities
          exchange  registered under the Act on which such stock is listed,  or,
          if such stock is not listed on any such exchange,  the highest closing
          bid quotation with respect to a share of such stock as determined by a
          majority of the  Continuing  Directors  in good faith;  and (c) in the
          case of property  other than cash or stock,  the fair market  value of
          such property on the date in question as determined in good faith by a



                                      C-55
<PAGE>

          majority of the Continuing Directors.

    10.  In the event of any  Business  Combination  in which  this  Corporation
         survives,  the phrase "consideration other than cash to be received" as
         used in  paragraphs  2.(a) and 2.(b) of Section B of this  Article  VII
         shall include the shares of Common Stock and/or the shares of any other
         class or  series of  Capital  Stock  retained  by the  holders  of such
         shares.

D.   The Board of Directors  shall have the power and duty to determine  for the
     purposes  of this  Article  VII on the basis of  information  known to them
     after   reasonable   inquiry,   (a)  whether  a  person  is  an  Interested
     Shareholder,  (b) the number of shares of Capital Stock or other securities
     beneficially  owned by any person,  (c) whether a person is an Affiliate or
     Associate  of  another,  and (d) whether the assets that are the subject of
     any Business  Combination have, or the consideration to be received for the
     issuance  or  transfer  of  securities  by this  Corporation  have,  or any
     Subsidiary in any Business  Combination has, an aggregate Fair Market Value
     of $10,000,000 or more. Any such  determination made in good faith shall be
     binding and conclusive on all parties.

E.   Nothing  contained  in this  Article VII shall be  construed to relieve any
     Interested Shareholder from any fiduciary obligation imposed by law.

F.   The fact that any Business  Combination  complies  with the  provisions  of
     Section  B of this  Article  VII  shall  not be  construed  to  impose  any
     fiduciary duty,  obligation or  responsibility  on the Board, or any member
     thereof, to approve such Business  Combination or recommend its adoption or
     approval to the shareholders of this Corporation, nor shall such compliance
     limit,  prohibit  or  otherwise  restrict  in any manner the Board,  or any
     member  thereof,  with respect to  evaluations  of or actions and responses
     taken with respect to such Business Combination.

G.   Notwithstanding any other provisions of these Articles or the bylaws of the
     Corporation  (and  notwithstanding  the fact  that a lesser  percentage  or
     separate  class vote may be specified by law,  these Articles or the bylaws



                                      C-56
<PAGE>

     of the  Corporation),  the affirmative vote of the holders of not less than
     eighty percent (80%) of the votes entitled to be cast by the holders of all
     then outstanding shares of Voting Stock, voting together as a single class,
     shall be required to amend or repeal, or adopt any provisions  inconsistent
     with, this Article VII;  provided,  however,  that this Section G shall not
     apply to, and such eighty percent (80%) vote shall not be required for, any
     amendment,  repeal or adoption unanimously  recommended by the Board if all
     of such  directors are persons who would be eligible to serve as Continuing
     Directors within the meaning of Section C, paragraph 8 of this Article VII.

Article VIII

To the full extent  permitted by the  Connecticut  General  Statutes as the same
exists or may  hereafter  be amended,  no person who is or was a director of the
Corporation  shall be personally  liable to the Corporation or its  shareholders
for monetary  damages for breach of duty as a director in an amount that exceeds
the compensation received by the director for serving the Corporation during the
year of the violation. The limitation of liability of any person who is or was a
director  provided  for in this  Article  shall  not be  exclusive  of any other
limitation  or  elimination  of  liability  contained  in, or  pursuant  to, the
Connecticut  General  Statutes,  as the same exists or may hereafter be amended.
Any repeal or  modification  of this  Article  VIII by the  shareholders  of the
Corporation  shall not adversely affect any right or protection of a director of
the Corporation existing at the time of such repeal or modification.

Article IX

The  officers and  directors  of the  Corporation  shall be  indemnified  by the
Corporation to the fullest extent  permitted by, or pursuant to, the Connecticut
General  Statutes,  as  the  same  exists  or  may  hereafter  be  amended.  The
Corporation  may pay for or  reimburse  the  reasonable  expenses  incurred by a
director who is a party to a proceeding in advance of final  disposition  of the
proceeding if such  director is in full  compliance  with Section  33-773 of the
Connecticut  Business  Corporation  Act, as the same exists or may  hereafter be
amended.  Any repeal or  


                                      C-57
<PAGE>

modification  of this  Article  IX  shall  not  adversely  affect  any  right or
protection of a director or officer of the  Corporation  existing at the time of
such repeal or modification.





                                      C-58
<PAGE>









                                                                     APPENDIX D
                                     BYLAWS
                                       of
                                 HSB GROUP, INC.

                                    ARTICLE I
                             SHAREHOLDERS' MEETINGS

         All meetings of the Shareholders  shall be held in the City of Hartford
or such other place within  Connecticut  as the Board of Directors  may appoint.
The Annual  Meeting shall be held on the 3rd Tuesday of April in each year or on
some  other  day  within  two (2)  months  thereafter  as fixed by the  Board of
Directors.  Special  meetings  of the  Shareholders  may be held at such time as
fixed by the Board of Directors. Notice of every meeting of the Shareholders and
of the time and place thereof shall be given as required by law. At each meeting
of the Shareholders the President or Chairman of the Board shall preside and act
as Chairman.  The Chairman may appoint a Committee on Proxies to receive,  count
and report the votes cast in person at such meeting and the votes represented by
proxies.  The holders of a majority of the shares of the issued and  outstanding
stock entitled to vote at a meeting, present either in person or by proxy, shall
constitute  a quorum for the  transaction  of  business  at such  meeting of the
Shareholders.  If a quorum is not  present  at such  meeting,  the  Shareholders
present in person or by proxy may adjourn to such future time as shall be agreed
upon by them, and notice of such adjournment  shall be given to Shareholders not
present or represented at the meeting.

         Regulations  for  the  conduct  of a  meeting  of  Shareholders  may be
prescribed  by the  Chairman  or at the  Chairman's  option  be  adopted  by the
Shareholders present by voice vote or by ballot.

         At any meeting of the Shareholders, only such business may be conducted
as shall have been  properly  brought  before the meeting and as shall have been
determined to be lawful and appropriate for consideration by Shareholders at the
meeting.  To be properly brought before a meeting business must be (a) specified
in the notice of meeting,  (b)


                                      D-1
<PAGE>

otherwise  properly  brought  before the meeting by or at the  direction  of the
Board of Directors or the Chairman of the  meeting,  or (c)  otherwise  properly
brought before the meeting by a Shareholder. For business to be properly brought
before a meeting by a Shareholder  pursuant to clause (c) above, the Shareholder
must have given timely  notice  thereof in proper  written form to the Corporate
Secretary.  To be timely, a Shareholder's notice to the Corporate Secretary must
be delivered to or mailed and received by the Corporate Secretary of the Company
not less than sixty nor more than  ninety days prior to the  anniversary  of the
date on which the immediately  preceding  Annual Meeting of the Shareholders was
convened; provided, however, that in the event that the Annual Meeting is called
for a date that is not within thirty days before or after such anniversary date,
notice by the  Shareholder in order to be timely must be received not later than
the close of business on the tenth day following the day on which such notice of
the date of the Annual Meeting was mailed or such public  disclosure of the date
of the Annual  Meeting was made,  whichever  first  occurs.  Such  Shareholder's
notice  shall set forth as to each  matter  the  Shareholder  proposes  to bring
before the meeting (a) a brief description of the business desired to be brought
before the meeting and the reasons for conducting  such business at the meeting,
(b) the name and record address of such Shareholder, (c) the class and number of
shares of  capital  stock of the  Company  which are  beneficially  held by such
Shareholder and (d) any material  interest of such Shareholder in such business.
Notwithstanding  anything in these Bylaws to the contrary,  no business shall be
conducted  at a  meeting  except in  accordance  with the  procedures  set forth
herein.  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  procedures  set forth herein,  or that business was not
lawful or appropriate for  consideration by Shareholders at the meeting,  and if
the  Chairman of the meeting  should so  determine,  the Chairman of the meeting
shall so declare to the  meeting  and any such  business  not  properly  brought
before the meeting shall not be transacted at that meeting.

         Nominations  of persons for  election to the Board of  Directors of the
Company may be made by the Board of 


                                      D-2
<PAGE>

Directors or by any  Shareholder  entitled to vote for the election of Directors
in  compliance  with the notice  procedures  set forth herein.  Any  Shareholder
entitled to vote for the election of Directors at a meeting may nominate persons
for  the  election  of  Directors   only  if  timely   written  notice  of  such
Shareholder's  intent  is given to the  Corporate  Secretary.  To be  timely,  a
Shareholder's  notice to the Corporate  Secretary must be delivered to or mailed
and received by the Corporate  Secretary of the Company not less than sixty days
nor more than  ninety  days  prior to the  anniversary  of the date on which the
immediately preceding Annual Meeting of the Shareholders was convened; provided,
however,  that in the event that the Annual Meeting is called for a date that is
not within  thirty days  before or after such  anniversary  date,  notice by the
Shareholder  in order to be timely must be received  not later than the close of
business on the tenth day  following the day on which such notice of the date of
the Annual  Meeting  was  mailed or such  public  disclosure  of the date of the
Annual Meeting was made, whichever first occurs. Such Shareholder's notice shall
set forth (a) as to each person whom the  Shareholder  proposes to nominate  for
election or re-election as a Director,  (i) the name, age,  business address and
residence address of such person, (ii) the principal occupation or employment of
such  person,  (iii)  the class and  number  of shares of  capital  stock of the
Company  which  are  beneficially  owned  by such  person  and  (iv)  any  other
information  relating  to  such  person  that is  required  to be  disclosed  in
solicitations of proxies for election of Directors, or is otherwise required, in
each case pursuant to Regulation 14A under the Securities  Exchange Act of 1934,
as amended (including, without limitation such person's written consent to being
named in the proxy  statement  as a nominee  and to  serving  as a  Director  if
elected)  and (b) as to the  Shareholder  giving  the  notice,  (i) the name and
address,  as they appear on the Company's  books, of such  Shareholder and, (ii)
the  class  and  number of shares  of  capital  stock of the  Company  which are
beneficially  owned  by  such  Shareholder.  If  the  Chairman  of  the  meeting
determines   that  a  nomination  was  not  in  accordance  with  the  foregoing
procedures, such nomination shall be void.



                                      D-3
<PAGE>



                                   ARTICLE II
                                    DIRECTORS

         The Board of Directors  shall consist of the number of directors  fixed
from time to time by resolution adopted by the affirmative vote of a majority of
the entire Board of Directors. No person shall serve as Director beyond the date
of the first Annual Meeting of  Shareholders  held  subsequent to the Director's
seventieth birthday.

         Regular and special meetings of the Board of Directors shall be held as
determined by the Directors.

   
         At any meetings of the Board of Directors,  a majority of the Directors
then in  office,  but not less  than  one-third  of the  directorships  fixed in
accordance with this Article,  shall  constitute a quorum for the transaction of
business. Unless otherwise prescribed herein or in the Articles of Incorporation
of the Company,  action of the Board of Directors  shall be by majority  vote of
the Directors present.  The compensation of Directors shall be determined by the
Board of Directors.
    


                                   ARTICLE III
                                   COMMITTEES

         The  Board  of  Directors  may by  resolution  designate  two  or  more
Directors to  constitute  an  executive  committee  or other  committees,  which
committees  shall  have and may  exercise  all such  authority  of the  Board of
Directors as shall be provided in such  resolution,  subject to such limitations
as are provided under Section 33-753 of the Connecticut General Statutes,  as it
may be amended from time to time.

         The  Board  of  Directors  may by  resolution  designate  one  or  more
Directors as  alternate  members of such  committees  who may replace any absent
member at any meeting of such  committees upon such notice and in such manner as
may be provided in the resolution designating such alternate members.





                                      D-4
<PAGE>



                                   ARTICLE IV
                                    OFFICERS

         There  shall be a  President  and there may be a Chairman of the Board,
each  elected by the Board of  Directors  from their own number.  The  President
shall be the chief executive  officer and responsible under the direction of the
Board of Directors for the  supervision,  management  and active  control of the
affairs and properties of the Company.

         The  Board  of  Directors  may  also  elect a  Corporate  Secretary,  a
Treasurer, one or more Executive Vice Presidents and Senior Vice Presidents.

         The President  shall appoint such other Officers as may be required for
the prompt and orderly transaction of the business of the Company.

          Any elected  Officer may be removed at the  pleasure of the  Directors
and any appointed Officer may also be removed by the President.

         The Officers  shall be subject to the  direction of and shall have such
authority  and perform  such duties as may be assigned  from time to time by the
Board of Directors or the President.

                                    ARTICLE V
                                   AMENDMENTS

         These  bylaws  may be  altered,  amended,  added  to or  repealed  by a
majority of the entire Board of Directors at any meeting of said Board, provided
that notice thereof shall have been given in the notice of such meeting.




                                      D-5
<PAGE>



STATE OF CONNECTICUT,
ss.               Hartford, CT..............19
COUNTY OF HARTFORD.

         The foregoing is a true copy of the bylaws of HSB Group, Inc.

                                           Attest:___________________
                    Corporate Secretary







                                      D-6
<PAGE>






Part II - Information Not Required in Prospectus

Item 20.  Indemnification of Officers and Directors

Item 21.  Exhibits.  See Exhibit Index attached hereto.

Item 22.  Undertakings

The undersigned registrant hereby undertakes:

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

         (2) To respond to requests  for  information  that is  incorporated  by
reference into the prospectus  pursuant to Item 4, 10(b), 11 or 13 of this form,
within one business day of receipt of such request, and to send the incorporated
documents  by first class mail or other  equally  prompt  means.  This  includes
information contained in documents filed subsequent to the effective date of the
registration statement through the date of responding to the request.

         (3) To supply by means of a  post-effective  amendment all  information
concerning a transaction,  and the company being acquired involved therein, that
was not the subject of and included in the registration statement when it became
effective.

         (4) To remove from registration by means of a post-effective  amendment
any shares of HSB Group which are not issued in the exchange.

Insofar as indemnification  for liabilities  arising under the Securities Act of
1933 may be permitted to  directors,  officers  and  controlling  persons of the
registrant  pursuant
<PAGE>

to the  provisions  described in Item 20, or otherwise,  the registrant has been
advised  that in the opinion of the  Securities  and  Exchange  Commission  such
indemnification  is  against  public  policy  as  expressed  in the  Act and is,
therefore,  unenforceable. In the event that a claim for indemnification against
such liabilities  (other than the payment by the registrant of expenses incurred
or paid by a director,  officer or  controlling  person of the registrant in the
successful  defense of any  action,  suit or  proceeding)  is  asserted  by such
director,  officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction the question whether such  indemnification  by it is against public
policy as expressed in the Act and will be governed by the final adjudication of
such issue.








<PAGE>


                         SIGNATURES

Pursuant to the  requirements  of the Securities Act of 1933, the registrant has
duly  caused  this  registration  statement  to be signed  on its  behalf by the
undersigned,  thereunto  duly  authorized,  in the  city of  Hartford,  State of
Connecticut on May --, 1997.

                           HSB GROUP, INC.

                           By:  /s/ Gordon W. Kreh
                                    Gordon W. Kreh
                                    President, Chief
                                    Executive Officer
                                    and Director

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

SIGNATURE                               TITLE

/s/ Gordon W. Kreh                  President and Chief
Gordon W. Kreh                      Executive Officer
                                    (Principal Executive
                                    Officer)

/s/ Saul L. Basch                   Senior Vice President,
Saul L. Basch                       Treasurer, Chief
                                    Financial Officer and
                                    Director
                                    (Principal Financial and
                                    Accounting Officer)

/s/ R. Kevin Price                  Senior Vice President,
R. Kevin Price                      Corporate Secretary and
                                    Director

/s/ Robert C. Walker                Senior Vice President,
Robert C. Walker                    General Counsel and
                                    Director




<PAGE>


                       EXHIBIT INDEX

 (2)     Agreement and Plan of Share Exchange (attached to
         Prospectus and Proxy Statement as Appendix A).

 (3)(i)  Articles of Incorporation of HSB Group, Inc.
         (attached to Prospectus and Proxy Statement as
         Appendix B).

 (3)(ii) Bylaws of HSB Group, Inc. (attached to Prospectus
         and Proxy Statement as Appendix C).

 (5)(i)  Opinion of Robert C. Walker, Senior Vice President
         and General Counsel

 (8)     Opinion of Skadden, Arps, Slate, Meagher & Flom
         LLP

(23)(a)  Consent of Robert C. Walker, Senior Vice President
         and General Counsel (included in (5)(i))

(23)(b)  Consent of Skadden, Arps, Slate, Meagher & Flom
         LLP (included in (5)(ii))

(23)(c)  Consent of Coopers & Lybrand L.L.P.

(99)(a)  Form of Proxy Card and letter to participants in
         employee plans










<PAGE>


                                                                  Exhibit 5(i)


April 18, 1997

The Hartford Steam Boiler Inspection
  and Insurance Company
One State Street
P.O. Box 5024
Hartford, Connecticut  06102-5024

Ladies and Gentlemen:

In connection  with the  preparation and filing with the Securities and Exchange
Commission   pursuant  to  the  Securities  Act  of  1933  (the  "Act")  of  the
Registration Statement on Form S-4 as amended (the "Registration  Statement") on
behalf of a newly  formed  holding  company,  HSB  Group,  Inc.,  a  Connecticut
corporation  (the  "Holding  Company"),  relating to the issuance of  20,041,707
shares of common stock of the Holding  Company (the "Common  Shares"),  you have
requested my opinion as to certain  legal  matters  related to the Agreement and
Plan of Share Exchange (the "Share Exchange") pursuant to which shares of common
stock and preferred stock (the  "Preferred  Shares") of the Holding Company will
be exchanged on a  one-for-one  basis for all the  outstanding  shares of common
stock and Series B Convertible  Preferred Stock,  respectively,  of The Hartford
Steam Boiler Inspection and Insurance Company (the "Company").

As  counsel  for the  Company  in this  transaction,  I have made such legal and
factual  examination and inquiries as I have deemed advisable for the purpose of
rendering this opinion. Based upon the foregoing, it is my opinion that upon (i)
the Boards of Directors of the Company and the Holding  Company having taken all
required  corporate  action;  (ii)  the  Registration  Statement  having  become
effective  under the Act;  (iii) the Agreement  and Plan of Share  Exchange (the
"Exchange  Agreement"),  attached  as  Appendix  A to the  Prospectus  and Proxy
Statement contained in the Registration Statement (the "Prospectus") having been
duly adopted by the Company's  stockholders at the Company's  Special Meeting to
be held on June 23, 1997;  (iv) all conditions in the Exchange  Agreement to the
effectiveness  of the Share Exchange  provided for therein having been satisfied
and the restated Articles of Incorporation of the Holding Company  substantially
in the form attached as Appendix B to the Prospectus having been duly filed with
the  Secretary  of State of  Connecticut  (the  "Secretary  of State");  (v) the
Articles of Share  Exchange  having been duly filed with the Secretary of State;
and (vi) the Common Shares and the Preferred  Shares having been duly  exchanged
in the transactions  contemplated by the Exchange  Agreement and the Prospectus;
the Common Shares and the Preferred  Shares will be validly  issued,  fully paid
and nonassessable.

The  foregoing  opinion is limited to the Federal laws of the United  States and
the laws of the State of  Connecticut,  and I am expressing no opinion as to the
effect of the laws of any other jurisdiction.

I hereby  consent  to the  filing of this  opinion  letter as an  exhibit to the
Registration  Statement  and to the  reference  to me under the  heading  "Legal
Opinions" in the Prospectus. In giving such consent, I do not thereby admit that
I am in the category of persons whose consent is required under Section 7 of the
Act or the rules and regulations promulgated thereunder.

Very truly yours,



Robert C. Walker



                                                                  Exhibit (8)



April 18, 1997

The Hartford Steam Boiler Inspection
  and Insurance Company
One State Street
P.O. Box 5024
Hartford, Connecticut  06102-5024


Ladies and Gentlemen:

                  You have  requested our opinion as to certain  Federal  income
tax  consequences  of the  Agreement  and Plan of  Share  Exchange  (the  "Share
Exchange")  pursuant to which  shares of common stock and  preferred  stock of a
newly formed holding company,  HSB Group,  Inc., a Connecticut  corporation (the
"Holding  Company")  will  be  exchanged  on a  one-for-one  basis  for  all the
outstanding  shares of common stock and Series B  Convertible  Preferred  Stock,
respectively,  of Hartford  Steam Boiler  Inspection  and Insurance  Company,  a
Connecticut corporation (the "Company").  Following the Share Exchange,  certain
other  transactions  will be effected as described in the  Prospectus  and Proxy
Statement of the Company and the Holding Company dated the date hereof (together
with the Share  Exchange,  the  "Restructuring"),  filed with the Securities and
Exchange Commission (the "Proxy Statement/Prospectus").

     In connection with rendering our opinion, we have examined and are familiar
with originals or copies, certified or otherwise identified to our satisfaction,
of the  Agreement  and Plan of Share  Exchange  of the  Company  and the Holding
Company,  dated as of March 19, 1997 among the Company and Holding Company,  the
Proxy  Statement/Prospectus,  and such other  records and  documents  as we have
deemed  necessary or appropriate as a basis for the opinions set forth below. We
have  assumed  the  genuineness  of all  signatures,  the legal  capacity of all
natural persons,  the authenticity of all records and documents  submitted to us
as originals,  the  conformity to original  records and documents of all records
and documents submitted to us as certified,  conformed or photostatic copies and
the  authenticity  of the originals of such copies.  As to any facts material to
this opinion that we did not  independently  establish or verify, we have relied
upon  representations of officers of the Company.  In rendering this opinion, we
have assumed that the  transactions  will be consummated in accordance  with the
descriptions  thereof  set forth in such  records  and  documents  and that such
records and documents accurately reflect the material facts of the transactions.
Our opinion is limited to legal rather than factual matters.

     In rendering our opinion,  we have relied upon the Internal Revenue Code of
1986,  as  amended,   Treasury   Regulations,   legislative  history,   judicial
authorities,  published positions of the Internal Revenue Service and such other
authorities as we have considered relevant,  all in effect as of the date hereof
and all of which are subject to change,  sometimes with retroactive  effect,  or
differing interpretation.

Based upon and subject to the foregoing, we are of the opinion that:

         (a)  no gain or loss will be recognized by the Company as a result of
the Share Exchange;

         (b) no gain  or loss  will be  recognized  by the  stockholders  of the
Company on the exchange of their shares of common stock and Series B Convertible
Preferred  Stock solely for shares of Holding  Company common stock and Series B
Convertible Preferred Stock, respectively, pursuant to the Share Exchange;

         (c) the tax basis of the shares of  Holding  Company  common  stock and
Series B Convertible  Preferred Stock received by stockholders of the Company on
the  exchange  of all their  shares of the  Company  common  stock and  Series B
Convertible  Preferred  Stock in the Share Exchange solely for shares of Holding
Company common stock and Series B Convertible  Preferred  Stock will be the same
in the aggregate as the tax basis of the shares of the Company  common stock and
Series B Convertible Preferred Stock surrendered in exchange therefor; and

         (d) the holding  period of the shares of Holding  Company  common stock
and Series B Convertible  Preferred  Stock  received in the Share  Exchange will
include  the period  during  which the shares of the  Company  common  stock and
Series B Convertible Preferred Stock surrendered in exchange therefor were held,
provided  such  shares of the  Company  common  stock and  Series B  Convertible
Preferred Stock were held as capital assets at the Effective Time.

Except as set forth  above,  we express  no other  opinion.  Our  opinion is not
binding upon a court, and, accordingly, it is possible that the Internal Revenue
Service or a court may disagree with our  conclusions.  We hereby consent to the
filing of this opinion  letter as an exhibit to the Proxy  Statement/Prospectus.
In giving such  consent,  we do not thereby admit that we are in the category of
persons whose consent is required  under Section 7 of the Securities Act of 1933
or the rules and regulations promulgated thereunder.

Very truly yours,




Skadden, Arps, Slate, Meagher & Flom LLC




                                                               EXHIBIT (23)(c)
 
CONSENT OF INDEPENDENT ACCOUNTANTS

 
     We hereby consent to the  incorporation  by reference in this  registration
statement on Form S-4 of our report dated  January 27, 1997, on our audit of the
consolidated  financial  statements  and  financial  statement  schedules of The
Hartford Steam Boiler Inspection and Insurance  Company.  We also consent to the
reference to us under the heading "Proposal to Approve Share Exchange--Experts".

Coopers & Lybrand L.L.P.

Hartford, Connecticut
April 18, 1997





                                                                  Exhibit 99(a)


The following is the text of the  Company's  form of proxy and memo to employees
participating  in Company plans to be used in connection with the Company's 1997
special meeting:

THE HARTFORD STEAM BOILER INSPECTION AND INSURANCE COMPANY

ONE STATE STREET, P.O. BOX 5024, HARTFORD, CONNECTICUT  06102-5024
SPECIAL MEETING OF STOCKHOLDERS - JUNE 23, 1997

THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

PROXY

The  undersigned  hereby appoints Joel B. Alvord,  Richard G. Dooley,  Gordon W.
Kreh and Lois D. Rice, each with the power to appoint his or her substitute, and
hereby  authorizes  them to represent  and to vote, as designated on the reverse
side,  all the  shares  of  common  stock of the  Company  held on record by the
undersigned on April 25, 1997 at the Special  Meeting of Stockholders to be held
on June 23, 1997 or any adjournment  thereof,  upon all matters  properly coming
before said Special  Meeting  including but not limited to the matters set forth
on the reverse side, hereby revoking any proxy heretofore given.

IF NO DIRECTION IS GIVEN, THIS PROXY WILL BE VOTED FOR THE PROPOSAL TO APPROVE
THE AGREEMENT AND PLAN OF SHARE EXCHANGE.

(Important - To be signed and dated on reverse side)

SEE REVERSE SIDE

[LOGO]

THIS IS YOUR PROXY.  YOUR VOTE IS IMPORTANT


Regardless  of whether you plan to attend the Special  Meeting of  Stockholders,
you can be sure your shares are represented at the meeting by promptly returning
your proxy in the enclosed envelope.

The proposal to be presented to stockholders at the Special Meeting involves the
formation  of a holding  company  structure  as  described in more detail in the
enclosed  Prospectus  and  Proxy  Statement.  For  the  reasons  stated  in  the
accompanying  materials,  the Board of Directors  believes that the formation of
such a holding company structure is in the best interests of the Company and its
stockholders  and  recommends  a vote  "FOR" the the  proposal  to  approve  the
Agreement and Plan of Share Exchange.

/X/  Please mark votes as in this example.

The Board of Directors recommends a vote FOR the following proposal:

Approval of Agreement and Plan of Share Exchange in connection  with formation 
of revised holding company structure.

/ /FOR
/ /AGAINST
/ /ABSTAIN

MARK HERE FOR ADDRESS CHANGE AND NOTE AT LEFT / /

MARK HERE IF YOU HAVE MADE COMMENTS / /

Please  sign  exactly as your name  appears.  If acting as  attorney,  executor,
trustee or in other representative  capacity,  sign name and print title. Please
date proxy and return in the enclosed post-paid return envelope.

Signature: --------------------------- Date:----------
Signature: --------------------------- Date:----------




<PAGE>



To:  Employees of The Hartford Steam Boiler Inspection and Insurance Company

From:  R. K. Price, Senior Vice President and Corporate Secretary

Date:

If you are a participant in any of the Company's stock plans (Payroll Investment
Plan,  Employee Stock Ownership Plan, Thrift Incentive Plan - HSB Stock Fund, or
the Stock Option and Restricted  Stock Plan), you should receive proxy materials
for the Company's  Special  Meeting to be held on June 23, 1997 through the U.S.
mail shortly.

Included with the proxy  materials is a card upon which to register your vote in
connection  with action proposed to be taken at the Special  Meeting.  The proxy
card  lists the number of shares  allocated  to your  account  under each of the
plans in which you  participate,  as well as any shares you hold  directly.  The
following abbreviations are used to identify your holdings:

COM - Shares held directly or through the Payroll Investment
      Plan
RST - Restricted Stock held under the Stock Option and
      Restricted Stock Plan
TIP - Shares  allocated to your account under the Thrift Incentive Plan if
      you participate in the HSB Stock Fund
ESO - Shares  allocated to your account under the Employee Stock  Ownership
      Plan (ESOP)

If you hold shares jointly with another individual or as custodian for a minor's
account, you will receive a separate card for that account.

Whether you own one share or a thousand,  it is very  important that your shares
be represented at the Special Meeting. As a shareholder,  you have the right and
an obligation to have your vote count at the Special Meeting. I encourage you to
use this  opportunity  by  completing  the proxy  card and  returning  it in the
envelope provided.

If you do not receive your  materials  by May 20, or if you misplace  your card,
please contact Jean Cohn, Home Office, Ext. 5724.







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