HEALTHCARE CAPITAL CORP
8-K, 1997-11-25
NURSING & PERSONAL CARE FACILITIES
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                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934


Date of Report (date of earliest event reported)        November 21, 1997
                                                 -------------------------------

                            HEALTHCARE CAPITAL CORP.
- --------------------------------------------------------------------------------
             (Exact name of registrant as specified in its charter)


          Alberta, Canada                0-22367               Not applicable
- --------------------------------------------------------------------------------
 (State or other jurisdiction        (Commission File          (IRS Employer
  of incorporation)                       Number)            Identification No.)

111 S.W. Fifth Street, Suite 2390, Portland, Oregon                 97204
- --------------------------------------------------------------------------------
(Address of principal executive offices)                          (Zip Code)


Registrant's telephone number, including area code        (503) 225-9152
                                                    ----------------------------



<PAGE>



Item 1.  Changes in Control of Registrant.

Item 5.  Other Events.

                  On  November  21,  1997,   HealthCare   Capital   Corp.   (the
"Corporation")  entered into a definitive  Securities  Purchase  Agreement  with
Warburg Pincus Ventures,  L.P.  ("Warburg"),  of New York, New York, pursuant to
which Warburg has agreed to purchase  13,333,333 Series A Convertible  Preferred
Shares (the  "Convertible  Shares"),  together with warrants (the "Warrants") to
purchase 10,000,000 common shares of the Corporation (the "Common Shares"),  for
$18,000,000  in cash.  The  exercise  price of the  Warrants is $2.40 per share.
Consummation  of the  purchase  transaction,  which  is  expected  to  occur  by
mid-January 1998, is subject to regulatory approval and shareholder  approval in
accordance with the policies of The Alberta Stock Exchange.  The net proceeds of
approximately  $16,000,000  will be  utilized  for  acquisitions  of  additional
audiology-related businesses and for working capital purposes.

                  Following  consummation  of the  purchase  of the  Convertible
Shares,  such shares will represent  approximately 33 percent of the outstanding
voting securities of the Corporation.  Including the Common Shares issuable upon
exercise of the Warrants, Warburg will beneficially own approximately 46 percent
of  the  voting   securities  of  the  Corporation  upon   consummation  of  the
transaction.

                  Upon  consummation of the purchase of the Convertible  Shares,
and for so long as  Warburg  beneficially  owns a number of  outstanding  Common
Shares or Convertible Shares constituting at least 10 percent of the outstanding
Common  Shares  (including  for this  purpose the Common  Shares  issuable  upon
conversion of the  Convertible  Shares but not the Common  Shares  issuable upon
exercise  of the  Warrants),  the  Corporation  will  be  required  to  use  its
reasonable best efforts to elect and retain as directors two persons, reasonably
satisfactory  to the  Corporation,  designated  by  Warburg.  Such  number  will
increase to three if and for so long as the number of  positions on the Board of
Directors   exceeds  eight.   Such  number  will  decrease  by  one  if  Warburg
beneficially  owns  less  than  10  percent  of the  outstanding  Common  Shares
(including  for this purpose the Common Shares  issuable upon  conversion of the
Convertible  Shares but not the Common  Shares  issuable  upon  exercise  of the
Warrants) and will further  decrease to none if Warburg  beneficially  owns less
than 3,333,333 Common Shares or Convertible Shares. In order to comply with this
requirement,  the Board of Directors presently intends to increase the number of
positions on the Board to eight  effective upon  consummation of the transaction
with Warburg.  As long as Warburg  beneficially  owns at least 3,333,333  Common
Shares or  Convertible  Shares,  the  number of  positions  on the Board may not
exceed 11.

                  A copy of the news release  dated  November 25, 1997, in which
the Corporation  announced  details of the foregoing  transaction is attached as
Exhibit 99.1 hereto.


                                      - 2 -

<PAGE>


 Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits.

       (c)  Exhibits

                Exhibit 99.1     News Release of HealthCare Capital Corp. dated
                                 November 25, 1997

                Exhibit 99.2     Securities   Purchase   Agreement  between  the
                                 Registrant and Warburg Pincus  Ventures,  L.P.,
                                 dated November 21, 1997


                                    SIGNATURE

                  Pursuant to the requirements of the Securities Exchange Act of
1934,  the  Registrant has duly caused this Report to be signed on its behalf by
the undersigned hereunto duly authorized.

DATED:  November 25, 1997                   HEALTHCARE CAPITAL CORP.



                                            By  /s/ Edwin J. Kawasaki
                                                Edwin J. Kawasaki
                                                Vice President-Finance


                                      - 3 -





  CONTACT:                         -OR-        HCL'S INVESTOR RELATIONS COUNSEL:
  HealthCare Capital Corp.                     The Equity Group Inc.
  Edwin J. Kawasaki                            Devin Sullivan
  Chief Financial Officer                      (212) 836-9608
  (503) 225-9152                               e-mail:[email protected]

                              FOR IMMEDIATE RELEASE

 Portland, OR - November 25, 1997 - The Board of Directors of HealthCare Capital
 Corp. (Alberta Stock Exchange: HCL) ("HealthCare" or the "Corporation"),  d/b/a
 SONUS, a leading operator of audiology clinics in the United States and Canada,
 is pleased to announce the following corporate developments:

            HEALTHCARE SIGNS DEFINITIVE SECURITIES PURCHASE AGREEMENT
                     WITH WARBURG PINCUS VENTURES, L.P. FOR
                       U.S. $18 MILLION PRIVATE PLACEMENT

 The  Corporation  has signed a definitive  securities  purchase  agreement with
 Warburg Pincus  Ventures,  L.P., a U.S. $2 billion  investment  fund managed by
 E.M.  Warburg,  Pincus & Co.,  LLC of New  York,  New York,  pursuant  to which
 Warburg will  receive  13,333,333  Series A  Convertible  Preferred  Shares and
 warrants  to  purchase  10,000,000  common  shares,  both to be  issued  by the
 Corporation,  in exchange for U.S.  $18,000,000  in cash. The  Corporation  may
 receive  additional  proceeds of up to U.S.  $24,000,000  upon  exercise of the
 warrants. Consummation of the transaction is subject to regulatory approval and
 shareholder  consent.  The net proceeds from this  transaction will be utilized
 for  acquisitions of additional  audiology  related  businesses and for working
 capital purposes.

 Brandon  M.  Dawson,  President  and Chief  Executive  Officer  of  HealthCare,
 commented,  "This financing will  accelerate our expansion  efforts and move us
 closer toward our vision of  consolidating  the hearing health  industry.  This
 affiliation with Warburg Pincus Ventures, L.P. represents a benchmark financing
 for the Corporation and further validates our growth strategy and belief in the
 exceptional  opportunities  available in our industry. We are extremely pleased
 to have attracted such a prestigious firm with a distinguished  track record in
 funding growth stage companies within the health care industry."



<PAGE>



HealthCare owns the largest group of audiology  based hearing clinics  operating
in the United States and Canada.  HealthCare's 52 hearing clinics provide a full
range of products and services to hearing impaired  patients.  The Corporation's
vision  is to  become  the  premier  hearing  care  provider  in North  America.
HealthCare's  strategy  involves  the  consolidation  of  the  industry  through
acquisition and advancement of quality hearing care clinics.


TERMS OF CONVERTIBLE PREFERRED SHARES

Following  is a  summary  of the  material  terms of the  Series  A  Convertible
Preferred Shares (the "Convertible Shares").

                 VOTING  RIGHTS Each  Convertible  Share will be entitled to one
vote in the election of directors and any other matters  presented to the common
shareholders of the Corporation for their action or consideration. Upon issuance
of the Convertible Shares to Warburg Pincus Ventures, L.P. ("Warburg"),  Warburg
will possess  approximately  33% of the combined voting power of the Convertible
Shares and common shares (the "Common Shares") outstanding.

                 DIVIDENDS  Each  Convertible  Share will be entitled to receive
cumulative  dividends  payable  annually,  if and when  declared by the Board of
Directors,  at a rate of 5% per annum on a base amount of U.S.  $1.35 per share.
The dividends,  accrued or accumulated,  are forfeitable  upon conversion of the
Convertible  Shares. The Board of Directors presently does not intend to declare
dividends on the Convertible Shares;  such dividends will simply accumulate.  In
the event that  certain  conditions  have not been met by  January 1, 2003,  the
dividend rate will  increase.  Dividends on the  Convertible  Shares may, in the
discretion  of the Board of  Directors  and  subject  to  applicable  regulatory
approval, be paid in Common Shares. Cash dividends will not be payable on Common
Shares  unless  accrued  dividends on the  Convertible  Shares have been paid in
full.



<PAGE>



                 OPTIONAL  REDEMPTION The Convertible Shares may not be redeemed
before January 1, 2003.  Thereafter,  the Convertible  Shares may be redeemed at
the option of the Corporation.

                 CONVERSION  RIGHTS The  Convertible  Shares may be converted at
any time, in whole or in part, at the option of the holder,  into Common Shares.
The  conversion  rate  will be one  Common  Share  for  each  Convertible  Share
surrendered for conversion. The Corporation has the right to force conversion of
the  Convertible  Shares,  in whole or in part,  upon  satisfaction  of  certain
conditions.

                 LIQUIDATION  PREFERENCE  In  the  event  of  a  liquidation  or
dissolution  of the  Corporation,  holders  of the  Convertible  Shares  will be
entitled to a liquidating  distribution  equal to the greater of U.S.  $1.35 per
Convertible Share plus accrued dividends, or the amount to which they would have
been entitled if their Convertible Shares had been converted into Common Shares,
before any distribution of assets to holders of the common shares.

WARRANTS TO PURCHASE COMMON SHARES

                 The warrants (the  "Warrants")  are  exercisable  at a price of
U.S. $2.40 per share (the "Warrant Price") for three years following the date of
issuance, which period is extendable up to five years upon receipt of applicable
regulatory  approvals.  The  Corporation  may force the exercise of the Warrants
upon satisfaction of certain conditions.

                The  Warrant  Price  will be  payable  in  cash.  Alternatively,
Warburg  will be  entitled  to  effect a  "cashless  exercise"  of  Warrants  by
surrendering other Warrants covering Common Shares. The maximum number of Common
Shares  which may be received by Warburg in such a "cashless  exercise"  will be
2,500,000  and any  remaining  Warrants  must be exercised  for cash. If Warburg
utilizes the "cashless exercise" feature in connection with a voluntary exercise
of  Warrants,  it will be required  to  simultaneously  convert all  Convertible
Shares owned by it into Common Shares.


<PAGE>


ELECTION OF DIRECTORS

                Upon consummation of the purchase of the Convertible Shares, and
for so long as Warburg owns at least 10% of the combined outstanding Convertible
and Common Shares,  the Corporation  will be required to use its reasonable best
efforts to elect and retain as directors two persons, reasonably satisfactory to
the  Corporation,  designated by Warburg.  Such number will increase to three if
and for so long as the number of  positions  on the Board of  Directors  exceeds
eight.  Such  number will  decrease by one if Warburg  owns less than 10% of the
combined outstanding  Convertible and Common Shares and will further decrease to
none if Warburg owns less than 3,333,333  Convertible  and/or Common Shares.  In
order to comply with this requirement,  the Board of Directors presently intends
to increase the number of positions on the Board to eight upon  consummation  of
the transaction with Warburg.


The  Convertible  Shares,  Warrants  and  underlying  Common  Shares will not be
registered under the Securities Act of 1933 upon issuance and may not be offered
or sold in the United States absent registration or an applicable exemption from
such registration  requirements.  In addition, the Convertible Shares,  Warrants
and underlying  Common Shares may not be sold prior to six months  following the
closing of the transaction.

This news release  contains  forward looking  statements which may involve known
and unknown  risks,  uncertainties  and other  factors that may cause the actual
results,  performance or achievements  of HealthCare to be materially  different
from any future  results,  performance or  achievements  expressed or implied by
such forward-looking statements. Such factors with respect to HealthCare include
economic trends in HealthCare's market area, the ability of HealthCare to manage
its growth and  integrate  new  acquisitions  into its  network of hearing  care
clinics, changes in the application or interpretation of applicable governmental
laws  and  regulations,   the  ability  of  HealthCare  to  complete  additional
acquisitions  of hearing care  clinics on terms  favorable  to  HealthCare,  the
degree of  consolidation in the hearing care industry,  HealthCare's  success in
attracting and retaining qualified audiologists and staff to operate its hearing
clinics,  product and professional liability claims brought against HealthCare's
insurance coverage,  and the availability of and costs associated with potential
sources of financing.

ON BEHALF OF THE BOARD OF DIRECTORS

"Brandon M. Dawson"

Brandon M. Dawson
President/CEO

"The Alberta Stock Exchange has neither approved nor disapproved the information
contained herein."










                            HEALTHCARE CAPITAL CORP.

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

                          SECURITIES PURCHASE AGREEMENT

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

                13,333,333 SERIES A CONVERTIBLE PREFERRED SHARES

                  WARRANTS TO PURCHASE 10,000,000 COMMON SHARES

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



<PAGE>


                                Table of Contents
                                -----------------

    Section
    -------

    1.   Sale and Purchase.

    2.   Closing; Payment of Purchase Price.

    3.   Representations and Warranties of the Company.
         (a)  Organization; Good Standing.
         (b)  Governmental Authority.
         (c)  Authorization of Agreements.
         (d)  Capitalization.
         (e)  Authorization of Convertible Shares and Warrants.
         (f)  Consents and Approvals.
         (g)  Noncontravention.
         (h)  Change in Ownership.
         (i)  Litigation.
         (j)  Reports and Financial Statements.
         (k)  Liabilities.
         (l)  Material Contracts.
         (m)  Employees.
         (n)  Employee Benefit Plans.
         (o)  Patents, Licenses, etc.
         (p)  Taxes.
         (q)  Properties.
         (r)  Condition of Properties.
         (s)  Insurance.
         (t)  No Adverse Change.
         (u)  Transactions with Related Parties.
         (v)  Interest in Competitors.
         (w)  Registration Rights.
         (x)  Private Offering.
         (y)  Brokerage.
         (z)  Illegal or Unauthorized Payments; Political Contributions.
         (aa) Material Facts.
         (bb) No Integrated Offering.

    4.   Covenants of the Company.
         (a)  [Conditions of The Alberta Stock Exchange].
         (b)  [No actions will contravene representations and warranties]
         (c)  [Right to appoint directors]
         (d)  Use of Proceeds.


                                      -ii-
<PAGE>

         (e)  Financial and Business Information.
              (i)    Monthly and Quarterly Statements
              (ii)   Annual Statements
              (iii)  Business Plan; Projections
              (iv)   Audit Reports
              (v)    Other Reports
              (vi)   Progress Report
              (vii)  Requested Information
         (f)  Inspection.
         (g)  Takeover Statute.
         (h)  Conduct of Business and Maintenance of Existence.
         (i)  Compliance with Laws.
         (j)  Insurance.
         (k)  Keeping of Books.
         (l)  Lost, etc. Certificates Evidencing Securities (or Common Shares);
              Exchange.
         (m)  Limitations on Corporate Actions.
         (n)  Commencement and Termination of Covenants
         (o)  Form D Filing.

    5.   Representations, Warranties and Covenants of the Investor;
         Additional Covenants of the Company
         (a)  General.
         (b)  Disclosure and Non-Public Information.
         (c)  Securities Act Matters.
         (d)  Limitation on Transfer.
         (e)  No Intention of Board to Pay Dividends.
         (f)  Hart-Scott Act Compliance.
         (g)  Consents and Approvals.
         (h)  Acknowledgments Regarding the Advisors

    6.   Conditions to Closing.
         (a)  [As to the Company:]
              (i)    Representations and Warranties.
              (ii)   Compliance with Agreement.
              (iii)  No Legislation or Injunction.
              (iv)   Adverse Developments
              (v)    Consents and Approvals.
              (vi)   Officers' Certificate.
              (vii)  Opinions of Counsel.
              (viii) Secretary's Certificate.
              (ix)   Approval of Proceedings.
              (x)    Warrant Agreement.

                                      -iii-
<PAGE>

              (xi)   Shareholders' Agreement.
              (xii)  Recent Financial Statements.
              (xiii) Filing of Convertible Shares Certificate.
              (xiv)  Conditional Approval of The Alberta Stock Exchange.
              (xv)   Antitrust Approvals.
              (xvi)  Directors.
              (xvii)  Employment Agreements.
         (b)  [As to the Investor:]
              (i)    Consents and Approvals.
              (ii)   No Legislation or Injunction.
              (iii)  General Partner's Certificate.
              (iv)   Antitrust Approvals.
    7.   Expenses of Sale.
    8.   Registration Rights.
    9.   Indemnification.
    10.  Contribution.
    11.  Notices.
    12.  Parties.
    13.  Termination and Survival.
    14.  Amendment and Modification.
    15.  Further Assurances
    16.  Waiver of Breach
    17.  Entire Agreement.
    18.  Severability.
    19.  Limitation on Enforcement of Remedies.
    20.  Counterparts.
    21.  Law.

Schedule 3(d)       Derivative Securities
Schedule 3(f)       Consents and Approvals
Schedule 3(l)       Key Agreements and Instruments
Schedule 3(m)(ii)   Employment Agreements
Schedule 3(n)       Employee Benefit Plans Under ERISA
Schedule 3(u)       Related Parties
Schedule 3(y)       Brokerage
Schedule 4(m)       Redemption Obligations Incurred in Connection
                    with the Acquisition of Hearing Clinics

Exhibit A      Form of Warrant Agreement
Exhibit B      Form of Shareholders' Agreement
Exhibit C      Form of Terms of Series A Convertible Preferred Shares
Exhibit D-1    Form of Opinion of Ballem MacInnes
Exhibit D-2    Form of Opinion of Carter, Ledyard & Milburn


                                      -iv-

Note:  The Schedules and Exhibits D-1 and D-2 have been omitted.  Copies will be
provided to the Securities and Exchange Commission upon request.

<PAGE>


                            HEALTHCARE CAPITAL CORP.

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

                          SECURITIES PURCHASE AGREEMENT

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

                13,333,333 SERIES A CONVERTIBLE PREFERRED SHARES

                  WARRANTS TO PURCHASE 10,000,000 COMMON SHARES

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


        This  Securities  Purchase  Agreement is made as of November 21, 1997 by
and between  HealthCare  Capital Corp., an Alberta  corporation (the "Company"),
and  Warburg  Pincus  Ventures,   L.P.,  a  Delaware  limited  partnership  (the
"Investor").

        WHEREAS,  the Investor wishes to purchase and the Company wishes to sell
certain securities of the Company as set forth in this Agreement.

        NOW, THEREFORE, to effect such purchase and sale and in consideration of
the mutual covenants, representations, warranties and agreements hereinafter set
forth and intending to be legally bound by this  Agreement,  the Company and the
Investor agree as follows:

        1.  Sale and  Purchase.  The  Company  agrees  to issue  and sell to the
Investor and the Investor agrees to purchase from the Company  13,333,333 Series
A Convertible  Preferred  Shares (the  "Convertible  Shares") of the Company and
warrants (the  "Warrants") to purchase  10,000,000  common  shares,  without par
value, of the Company (the "Common Shares"),  for an aggregate purchase price of
U.S. $18,000,000 (the "Purchase Price") on the terms and conditions set forth in
this Agreement.  The Warrants shall be issued pursuant to the terms of a warrant
agreement  in the  form of  Exhibit  A hereto  (the  "Warrant  Agreement").  The
Convertible  Shares  and  the  Warrants  are  collectively  referred  to in this
Agreement as the  "Securities."  This  Agreement  and the Warrant  Agreement are
collectively referred to in this Agreement as the "Transaction Documents."

        2. Closing;  Payment of Purchase Price.  The closing of the purchase and
sale of the Securities hereunder (the "Closing") shall occur on January 16, 1998
at the offices of Willkie Farr & Gallagher,  153 East 53rd Street, New York, New
York,  or such other date and  location as may be agreed upon by the Company and
the Investor;  provided,  however, the Closing shall not occur until the closing
conditions  set forth in Section 6 hereto have been  satisfied.  At the Closing:
(a) the  Investor  and  the  Company  shall  execute  and  deliver  the  Warrant
Agreement; (b) the Investor and the shareholders named therein shall execute and
deliver  a  shareholders'  agreement  in the  form  of  Exhibit  B  hereto  (the
"Shareholders'  Agreement");  and (c) the Investor shall pay to the Company U.S.
$18,000,000 in immediately available funds (to such account as the Company shall


                                       -1-
<PAGE>


designate,  not less than  three  business  days prior to the  Closing)  against
delivery to the Investor of a certificate for 13,333,333  Convertible Shares and
a certificate for Warrants to purchase 10,000,000 Common Shares. The date of the
Closing may be changed by mutual agreement of the Company and the Investor,  and
the date on which  the  Closing  actually  occurs is  referred  to herein as the
"Closing Date."

        3. Representations and Warranties of the Company. The Company represents
and warrants to the Investor as follows:

               (a)  Organization;  Good  Standing.  The Company is a corporation
        duly organized,  validly existing and in good standing under the laws of
        Alberta,  Canada with full power and authority,  corporate and other, to
        own or lease and operate its  properties  and to conduct its business as
        currently conducted. Except as provided in Section 3(b), the Company has
        made all necessary  filings under all applicable  corporate,  securities
        and any other laws to which it is subject,  except where failure to file
        would not have a material adverse effect on the condition  (financial or
        otherwise), results of operations, business, assets, or prospects of the
        Company  and its  Subsidiaries  (as defined  below)  taken as a whole (a
        "Material  Adverse  Effect").  The  Company  is the  direct or  indirect
        beneficial  owner of all of the outstanding  securities of the following
        corporations    (each,   a   "Subsidiary"   and,    collectively,    the
        "Subsidiaries"):

               SONUS-Canada Ltd., a British Columbia, Canada, corporation; and

               SONUS-USA, Inc., a Washington corporation.

        Each Subsidiary is a corporation duly organized, validly existing and in
        good standing under the laws of its jurisdiction of incorporation,  with
        full  power and  authority,  corporate  and  other,  to own or lease and
        operate  its  properties  and  to  conduct  its  business  as  currently
        conducted, and is duly qualified to do business as a foreign corporation
        and is in good standing in all jurisdictions where such qualification is
        necessary  and  except  where  failure  to so  qualify  would not have a
        Material Adverse Effect.  Each Subsidiary has made all necessary filings
        required under all applicable  corporate,  securities and any other laws
        to which it is subject,  except  where  failure to file would not have a
        Material Adverse Effect.  The Company has no subsidiaries other than the
        Subsidiaries.

               (b) Governmental Authority. Each filing, authorization, approval,
        consent,  order,  registration,  license  or  permit  of  any  court  or
        governmental  or regulatory  agency or body required in connection  with
        the execution and delivery by the Company of the  Transaction  Documents
        and the consummation of the transactions  therein  contemplated has been
        made  or  obtained,  except  such  as  may be  required  under  (i)  the
        Hart-Scott-Rodino  Antitrust  Improvements  Act of 1976, as amended (the
        "Hart-Scott  Act"),  (ii) the  Securities  Act of 1933,  as amended (the
        "Securities  Act"),  the  Blue Sky laws or  regulations  of the  various
        states or the  securities  laws of the provinces of Canada and (iii)


                                       -2-
<PAGE>

        the by-laws or rules of the National  Association of Securities Dealers,
        Inc. The Company has also obtained a conditional approval of The Alberta
        Stock  Exchange for the  transactions  contemplated  in the  Transaction
        Documents.

               (c)  Authorization of Agreements.  The Company has full power and
        authority,  corporate  and other,  to  execute,  deliver and perform the
        Transaction  Documents and to consummate the  transactions  contemplated
        thereby  and to  perform  its  obligations  thereunder.  The  execution,
        delivery and performance of the Transaction Documents by the Company and
        the consummation by the Company of the transactions therein contemplated
        have been duly authorized by all necessary  corporate action on the part
        of the Company.  This Agreement has been, and as of the Closing Date the
        Warrant  Agreement  will be, duly executed and delivered by the Company.
        This  Agreement  constitutes,  and as of the  Closing  Date the  Warrant
        Agreement  will  constitute,  the valid and binding  obligations  of the
        Company  enforceable against the Company in accordance with their terms,
        except insofar as enforcement  may be limited by applicable  bankruptcy,
        insolvency,  reorganization,  moratorium  and other laws  affecting  the
        rights  of  creditors  generally  and by the  discretion  of  courts  in
        granting equitable  remedies,  and except that (i) enforceability of the
        indemnification  provisions and the contribution provisions set forth in
        this  Agreement  may be limited by  Canadian  law,  the federal or state
        securities laws of the United States or the public policy underlying any
        such laws,  and (ii) the  validity of Section 21 of this  Agreement  and
        Section 15 of the Warrant  Agreement may be limited by the public policy
        of  Canada  or the State of New York,  and with  respect  to the  United
        States  District  Court for the  Southern  District of New York,  may be
        subject to the  discretion  of the Court  pursuant to 28 U.S.C.  Section
        1404(a).  The execution,  delivery and  performance  of the  Transaction
        Documents  by  the  Company,  the  consummation  by the  Company  of the
        transactions  therein  contemplated,  and the  compliance by the Company
        with the terms of the  Transaction  Documents do not, and will not, with
        or  without  the  giving of notice  or the lapse of time,  or both,  (i)
        result in any  violation of the  constating  documents of the Company or
        any of its Subsidiaries, (ii) result in a breach of or conflict with any
        of the terms or provisions of, or constitute a default under,  or result
        in the  modification  or  termination  of, or result in the  creation or
        imposition of any lien,  security  interest,  charge or encumbrance upon
        any  of  the  properties  or  assets  of  the  Company  or  any  of  its
        Subsidiaries  pursuant  to, any  indenture,  mortgage,  note,  contract,
        commitment  or other  agreement  or  instrument  that is material to the
        Company and the  Subsidiaries  taken as a whole, to which the Company or
        any  Subsidiary is a party or by which the Company or any  Subsidiary or
        any of its or their  properties  or assets are bound or affected;  (iii)
        violate any existing applicable law, rule, regulation,  judgment,  order
        or decree of any  governmental  agency or court,  domestic  or  foreign,
        having  jurisdiction  over the Company or any Subsidiary or its or their
        properties or business; or (iv) have any Material Adverse Effect.


                                       -3-
<PAGE>

               (d)     Capitalization.

                       (i) The authorized  capital of the Company consists of an
               unlimited  number  of  Common  Shares  without  par  value and an
               unlimited  number of preferred  shares without par value issuable
               in series. At the date hereof,  there were issued and outstanding
               27,284,517 Common Shares,  all of which have been duly authorized
               and validly  issued and are fully-paid  and  non-assessable.  The
               terms of the Convertible  Shares shall be as described in Exhibit
               C.

                       (ii)  Except  as  disclosed  in or  contemplated  by  the
               Company SEC Reports  (defined below) and in Schedule 3(d) hereto,
               there  are no  outstanding  securities  convertible  into  Common
               Shares or any  options,  warrants or other rights to purchase any
               Common Shares or securities convertible into Common Shares.

               (e) Authorization of Convertible  Shares and Warrants.  As of the
        Closing Date, the Company will have duly authorized and created a series
        of  preferred  shares  designated  as  "Series A  Convertible  Preferred
        Shares" and consisting of the Convertible  Shares. The issuance and sale
        of the Securities and the Common Shares  issuable upon the conversion of
        the  Convertible  Shares and the exercise of the Warrants have been duly
        authorized by the Corporation and, when issued,  the Convertible  Shares
        and each Common Share issuable upon conversion of the Convertible Shares
        and upon exercise of the Warrants, will be validly issued and fully paid
        and  nonassessable,  and the  holder  thereof  will  not be  subject  to
        personal  liability  solely by reason of being such holder.  None of the
        Securities  or such  Common  Shares is or will be subject to  preemptive
        rights of any securityholder of the Company.

               (f) Consents and  Approvals.  Except as set forth in Section 3(b)
        or on Schedule  3(f),  the  execution and delivery by the Company of the
        Transaction  Documents,  the issuance of any of the  Securities  and the
        Common Shares issuable upon the conversion of the Convertible Shares and
        the  exercise of the  Warrants,  the  performance  by the Company of its
        obligations hereunder and thereunder and the consummation by the Company
        of the transactions  contemplated  hereby and thereby do not require the
        Company  or any of its  Subsidiaries  to obtain any  consent,  approval,
        clearance or action of, or make any filing  submission  or  registration
        with, or give any notice to, any Person or judicial  authority.  As used
        in this Agreement, "Person" shall mean an individual, partnership, joint
        stock  company,   corporation,   limited  liability  company,  trust  or
        unincorporated  organization,   and  a  government,  agency,  regulatory
        authority or political subdivision thereof.

               (g)  Noncontravention.  Neither  the  Company  nor  either of its
        Subsidiaries  is in  violation  of,  or in  default  under,  any term or
        provision of (i) its constating documents, (ii) any indenture, mortgage,
        deed of trust, credit agreement, note or other evidence of


                                       -4-
<PAGE>

        indebtedness,  contract, commitment, undertaking,  arrangement, or other
        agreement or  instrument to which it is a party or by which it or any of
        its  properties  or business is bound or subject and which  violation or
        default would have a Material  Adverse  Effect  (collectively,  the "Key
        Agreements and Instruments"),  or (iii) except as described in Item 1 of
        the  Company's  Annual  Report on Form 10-KSB dated October 29, 1997 for
        the year ended  July 31,  1997 as  amended  by  Amendment  No. 1 on Form
        10-KSB/A dated October 30, 1997 (such Form 10-KSB, as so amended,  being
        hereinafter  referred  to as  the  "1997  Form  10-KSB"),  any  existing
        applicable law, rule, regulation,  ordinance,  code, judgment,  order or
        decree of any governmental agency or court, domestic or foreign,  having
        jurisdiction  over  the  Company  or any  Subsidiary  or  any  of  their
        respective  properties  or  businesses,  which  violation  would  have a
        Material Adverse Effect. The Company and each Subsidiary owns, possesses
        or has obtained all material  governmental and other licenses,  permits,
        certifications,   registrations,   approvals   or  consents   and  other
        authorizations  necessary  to own or lease,  as the case may be,  and to
        operate  its  properties  and  to  conduct  its  business  as  currently
        conducted and described in the 1997 Form 10-KSB,  and all such licenses,
        permits,  certifications,  registrations,  approvals, consents and other
        authorizations  are in good standing.  There are no proceedings  pending
        or,  to the best of the  Company's  knowledge,  threatened,  seeking  to
        cancel, terminate or limit any such licenses,  permits,  certifications,
        registrations, approvals or consents or authorizations, nor is there any
        basis therefor.

               (h) Change in Ownership.  Neither the purchase of the  Securities
        by the Investor nor the consummation of the transactions contemplated by
        this Agreement will result in (i) a Material Adverse Effect, (ii) to the
        best  of the  Company's  knowledge,  the  loss  of the  benefits  of any
        material business relationship, including with any customer or supplier,
        (iii)  the  acceleration  of  the  vesting  of any  outstanding  option,
        warrant, call, commitment, agreement, conversion right, preemptive right
        or other right to subscribe  for,  purchase or otherwise  acquire any of
        the  shares  of  the  capital  stock  of  the  Company  or  any  of  its
        Subsidiaries,   or  debt  securities  of  the  Company  or  any  of  its
        Subsidiaries  (collectively  "Commitments",   and  each  individually  a
        "Commitment"), (iv) any obligation of the Company or its Subsidiaries to
        grant, extend or enter into any Commitment, or (v) any right in favor of
        any Person to terminate or cancel any Key Agreement or Instrument.

               (i) Litigation. There are no claims, actions, suits, proceedings,
        arbitrations,  investigations or inquiries by or before any governmental
        agency,  court or tribunal,  domestic or foreign,  or before any private
        arbitration  tribunal,   pending  or,  to  the  best  of  the  Company's
        knowledge, threatened against the Company or any Subsidiary or involving
        the  properties or business of the Company or any Subsidiary  which,  if
        determined adversely, would, individually or in the aggregate, result in
        a Material Adverse Effect, or which relate in any way to the validity of
        the capital stock of the Company or the validity of this  Agreement,  or
        of any  action  taken or to be taken by the  Company  pursuant  to or in
        connection with this  Agreement.  Neither the Company nor any Subsidiary
        is  subject  to  any  order,   writ,   judgment,   injunction,   decree,
        determination  or


                                       -5-
<PAGE>


        award of any  court or of any  governmental  agency  or  instrumentality
        (whether  federal,  state,  local or foreign) which could  reasonably be
        expected to have a Material Adverse Effect.

               (j) Reports and Financial  Statements.  Shikaze  Ralston and KPMG
        Peat  Marwick  LLP,  which have  rendered  reports  with  respect to the
        financial  statements included in the 1997 Form 10-KSB, are "independent
        public  accountants"  within the meaning of the  Securities  Act and the
        regulations  promulgated  thereunder.  The  Company  has  furnished  the
        Investor with true and complete copies of the Company's Quarterly Report
        on Form  10-QSB for the  quarter  ended April 30,  1997,  the  Company's
        Registration  Statement on Form SB-2  (Registration  No.  333-23137)  as
        amended by Amendment Nos. 1 and 2 thereto, the 1997 Form 10-KSB, and the
        Company's definitive Management Information Circular and Proxy Statement
        dated October 29, 1997 (collectively,  the "Company SEC Reports"). As of
        their  respective  dates,  the Company  SEC Reports  were duly filed and
        complied  in  all  material   respects  with  the  requirements  of  the
        Securities Act or the  Securities  Exchange Act of 1934, as amended (the
        "Exchange  Act"),  as applicable,  and the rules and  regulations of the
        Securities  and  Exchange   Commission  (the  "Commission")   thereunder
        applicable to such Company SEC Reports.  As of their  respective  dates,
        the  Company SEC  Reports  did not  contain  any untrue  statement  of a
        material  fact or omit to state a material  fact  required  to be stated
        therein or necessary  to make the  statements  therein,  in light of the
        circumstances  under which they were made, not  misleading.  The audited
        consolidated   financial  statements  and  unaudited  interim  financial
        statements of the Company  included in the Company SEC Reports comply as
        to form in all material respects with applicable accounting requirements
        of the Securities  Act or the Exchange Act, as applicable,  and with the
        published rules and regulations of the Commission with respect  thereto.
        The  financial  statements  included in the Company SEC Reports (i) have
        been  prepared in  accordance  with  United  States  generally  accepted
        accounting  principles ("GAAP") applied on a consistent basis (except as
        may be indicated therein or in the notes thereto),  (ii) present fairly,
        in all material respects,  the financial position of the Company and its
        Subsidiaries as at the dates thereof and the results of their operations
        and cash flows for the periods  then ended  subject,  in the case of the
        unaudited  interim  financial  statements,   to  normal  year-end  audit
        adjustments  and any other  adjustments  described  therein and the fact
        that  certain  information  and notes have been  condensed or omitted in
        accordance  with the  Securities  Act or the  Exchange Act and the rules
        promulgated  thereunder,  and (iii) are, in all  material  respects,  in
        accordance  with the books of account and records of the Company  except
        as indicated therein.

               (k)  Liabilities.  Except  as  and  to the  extent  reflected  or
        reserved against in the consolidated financial statements of the Company
        included in the 1997 Form 10-KSB,  the Company as at July 31, 1997,  had
        no material liabilities,  debts,  obligations or claims asserted against
        it, whether accrued, absolute,  contingent or otherwise, and whether due
        or to become due,  and  including,  but not limited to,  liabilities  on
        account of taxes,

                                       -6-
<PAGE>

        unfunded past service  liabilities under any pension,  profit sharing or
        similar plan, other governmental  charges or lawsuits brought subsequent
        to such date.

               (l)  Material  Contracts.  Schedule  3(l)  sets  forth a true and
        complete  list of each  Key  Agreement  and  Instrument  other  than Key
        Agreements and  Instruments  listed as exhibits to the 1997 Form 10-KSB.
        Each Key Agreement and Instrument and any other material contract listed
        as an exhibit to the 1997 Form 10-KSB that is  currently  in effect,  is
        valid,  binding and  enforceable  against the Company or such Subsidiary
        and, to the Company's  best  knowledge,  the other parties  thereto,  in
        accordance  with its  terms,  and in full  force and  effect on the date
        hereof.

               (m)     Employees.

                       (i)  The  Company  and  its   Subsidiaries  are  in  full
               compliance  with all laws  regarding  employment,  wages,  hours,
               equal  opportunity,  collective  bargaining and payment of social
               security and other taxes except to the extent that  noncompliance
               would not have a  Material  Adverse  Effect.  Except as would not
               have a Material Adverse Effect,  no complaint of any unfair labor
               practice  or  discriminatory   employment  practice  against  the
               Company or any  Subsidiary  has been filed or, to the best of the
               Company's  knowledge,  threatened  to be  filed  with  or by  the
               National Labor Relations Board, the Equal Employment  Opportunity
               Commission or any other administrative  agency, federal or state,
               that  regulates  labor  or  employment  practices,   nor  is  any
               grievance  filed  or,  to the  best of the  Company's  knowledge,
               threatened to be filed,  against the Company or any Subsidiary by
               any  employee  pursuant  to any  collective  bargaining  or other
               employment  agreement to which the Company or any Subsidiary is a
               party  or is  bound.  The  Company  and its  Subsidiaries  are in
               compliance  with all applicable  federal,  state,  provincial and
               local  laws and  regulations  regarding  occupational  safety and
               health standards except to the extent that noncompliance will not
               have a Material  Adverse Effect,  and have received no unresolved
               complaints from any federal, state, provincial or local agency or
               regulatory   body  alleging   violations  of  any  such  laws  or
               regulations.

                       (ii)  Except  as set  forth  in  Schedule  3(m)(ii),  the
               employment  of all Persons  employed by the Company or any of its
               Subsidiaries  is,  subject to the  provisions of applicable  law,
               terminable at will without any penalty or severance obligation of
               any kind on the part of the  employer.  All sums due for employee
               compensation  and  benefits  and all  vacation  time owing to any
               employees  of the  Company or any of its  Subsidiaries  have been
               duly and  adequately  accrued  on the  accounting  records of the
               Company and its Subsidiaries.

                       (iii) The Company is not aware that any of its  executive
               officers is  obligated  under any contract  (including  licenses,
               covenants or  commitments of any


                                       -7-
<PAGE>


               nature) or other agreement, or subject to any judgment, decree or
               order of any court or administrative agency, that would interfere
               with the use of such executive  officer's best efforts to promote
               the  interests  of the  Company or that would  conflict  with the
               Company's business as proposed to be conducted.

                       (iv) The  Company  is not aware  that any  officer or key
               employee,  or  that  any  group  of  key  employees,  intends  to
               terminate their employment with the Company, nor does the Company
               have a present  intention to terminate  the  employment of any of
               the foregoing.

               (n)  Employee  Benefit  Plans.  Except as referred to in Schedule
        3(n) or the Company SEC Reports,  the Company and its Subsidiaries  have
        no retirement  or pension plans in respect of Canadian  employees and no
        employee benefit plans (as defined for the purpose of employees  located
        in the United States in Section 3(3) of the Employee  Retirement  Income
        Security  Act of 1974)  covering  former and  current  employees  of the
        Company or any of its Subsidiaries, or under which the Company or any of
        its  Subsidiaries  has any obligation or liability.  Schedule 3(n) lists
        all material compensation plans,  including,  without limitation,  those
        relating  to  bonuses,  commissions,   profit-sharing,   savings,  stock
        options,  insurance and deferred compensation or other similar fringe or
        employee benefits  arrangements  covering former or current employees of
        the Company or any of its Subsidiaries or under which the Company or any
        of its  Subsidiaries  has any obligation or liability  (each, a "Benefit
        Arrangement")  that are not  referred  to in the  1997  Form  10-KSB  or
        material incorporated therein by reference.  True and complete copies of
        all Benefit  Arrangements  have been  provided or made  available to the
        Investor  for  inspection   prior  to  the  date  hereof.   The  Benefit
        Arrangements  are and have been  administered in substantial  compliance
        with their terms and with the requirements of applicable law.

               (o)     Patents, Licenses, etc.

                       (i)  Except  as  described  in the 1997 Form  10-KSB  and
               except with respect to the security  interest  granted or assumed
               in  connection  with the  Company's  acquisition  of the  Midwest
               Division  of Hearing  Health  Services,  Inc.,  and the  security
               interest  granted to Royal Bank of Canada by  Sonus-Canada  Ltd.,
               the Company or one of its  Subsidiaries  owns,  free and clear of
               all encumbrances,  restrictions,  liens,  security  interests and
               charges,  and has good and marketable title to, or holds adequate
               licenses or otherwise  possesses all such rights as are necessary
               to  use  all  patents   (and   applications   therefor),   patent
               disclosures,  trademarks,  service marks, trade names, copyrights
               (and applications  therefor),  integrated  circuit  topographies,
               inventions,   discoveries,   processes,   know-how,   scientific,
               technical,   engineering   and  marketing   data,   formulae  and
               techniques  used or proposed to be used,  in or necessary for the
               conduct of its  business  as now  conducted  or as proposed to be
               conducted (collectively, "Intellectual Property").


                                       -8-
<PAGE>

                       (ii) Neither the Company nor any of its  Subsidiaries has
               received  notice nor otherwise has reason to know of any conflict
               or alleged  conflict with the rights of others  pertaining to the
               Intellectual  Property  described  in this Section 3(o) where the
               effect of such conflict could have a Material Adverse Effect.  To
               the  Company's  best  knowledge,   the  Company's  business,   as
               presently  conducted  and as proposed to be  conducted,  does not
               infringe  upon or violate any patent  rights or trade  secrets of
               others.  To the  Company's  best  knowledge,  the Company and its
               Subsidiaries have the right to use all trade secrets,  processes,
               customer  lists and other  rights  incident  to their  respective
               businesses as now conducted or as proposed to be conducted.

                       (iii)  To  the  best  knowledge  of the  Chief  Executive
               Officer and Chief Financial  Officer of the Company,  no employee
               of  the  Company  or any of its  Subsidiaries  has  violated  any
               employment agreement or proprietary  information  agreement which
               he or she had with a previous  employer  or any patent  policy of
               such  employer,  or is a party to or threatened by any litigation
               concerning any patents, trademarks, trade secrets, service names,
               trade names, copyrights, licenses and the like.

               (p) Taxes.  The  Company  and each  Subsidiary  has filed all tax
        returns required to be filed with the appropriate  taxing authorities in
        Canada and the United States, including all provincial, state, municipal
        and other local authorities  (whether relating to income,  sales,  goods
        and services, franchise, withholding, real or personal property or other
        types of taxes) or has duly  obtained  extensions of time for the filing
        thereof,  and has paid in full all taxes which have become due  pursuant
        to such  returns or claimed to be due by any such  taxing  authority  or
        otherwise due and owing,  except for taxes which are being  contested in
        good  faith by way of  appropriate  proceedings  and in respect of which
        appropriate  reserves have been taken on the financial statements of the
        Company and except  where the failure to file such tax returns or to pay
        such taxes would not have a Material Adverse Effect.  The provisions for
        taxes on the audited and unaudited  balance sheets  described in Section
        3(j) are  sufficient  for the  payment in all  material  respects of all
        accrued and unpaid federal, state, county and local taxes of the Company
        and its  Subsidiaries  whether or not  assessed  or  disputed  as of the
        respective dates of such balance sheets.

               (q)  Properties.  The  Company and each  Subsidiary  has good and
        marketable  title to all properties owned by them, free and clear of all
        security interests, charges, mortgages, liens, encumbrances and defects,
        except such as are  described in the 1997 Form 10-KSB or were granted or
        assumed in  connection  with the  Company's  acquisition  of the Midwest
        Division of Hearing Health  Services,  Inc. or such as do not materially
        affect  the  value  or  transferability  of  such  property  and  do not
        interfere  with the use of such  property made or proposed to be made by
        the Company or such Subsidiary.  The leases, licenses or other contracts
        or instruments under which the Company and each


                                       -9-
<PAGE>

        Subsidiary  leases,  holds or is entitled to use any  property,  real or
        personal,   are  valid,   subsisting  and  enforceable  with  only  such
        exceptions as are not material and do not interfere with the use of such
        property  made,  or  proposed  to  be  made,  by  the  Company  or  such
        Subsidiary,  and all  rentals,  royalties  or  other  payments  accruing
        thereunder  which  became due prior to the date of this  Agreement  have
        been duly paid, and neither the Company nor any Subsidiary is in default
        thereunder  and, to the best of the  Company's  knowledge,  no event has
        occurred  which,  with the  passage of time or the giving of notice,  or
        both, would constitute a default thereunder. Neither the Company nor any
        Subsidiary has received  notice of any violation of any applicable  law,
        ordinance,  regulation,  order or  requirement  relating to its owned or
        leased properties, except where such violation would not have a Material
        Adverse Effect.

               (r)  Condition  of   Properties.   All   facilities,   machinery,
        equipment, fixtures, vehicles and other properties owned, leased or used
        by the Company and its  Subsidiaries  are  reasonably fit and usable for
        the purposes for which they are being used,  are adequate and sufficient
        for the  Company's  or such  Subsidiary's  business  and  conform in all
        material respects with all applicable ordinances, regulations and laws.

               (s)  Insurance.  The Company and each  Subsidiary  has adequately
        insured its properties  against loss or damage by fire or other casualty
        and  maintains  such other  insurance,  including  but not  limited  to,
        liability  insurance,  as is usually  maintained  by  prudent  companies
        engaged in the same or similar businesses.

               (t) No  Adverse  Change.  Since  the date of the  latest  audited
        financial statements in the 1997 Form 10-KSB, except as otherwise stated
        in  or  contemplated  by  the  1997  Form  10-KSB  and  except  for  the
        Transaction Documents, (i) the Company has not entered into any material
        transactions  other than in the ordinary  course of  business;  and (ii)
        there has not been, and prior to the Closing Date there will not be, any
        event that constitutes a Material Adverse Effect.

               (u) Transactions with Related Parties. Except as described in the
        1997 Form 10-KSB or material  incorporated  therein by  reference  or in
        Schedule 3(u),  neither the Company nor any Subsidiary is a party to any
        agreement with any of the Company's directors,  officers or, to the best
        of the Company's knowledge,  any stockholders or any affiliate or family
        member  of  any of  the  foregoing  including,  without  limitation  any
        agreement  under  which it:  (i) leases  any real or  personal  property
        (either to or from such Person),  (ii) licenses technology (either to or
        from such  Person),  (iii) is  obligated  to  purchase  any  tangible or
        intangible asset from or sell such asset to such Person,  (iv) purchases
        products or services  from such  Person (v) has  borrowed  money from or
        lent money to such Person,  or (vi) employs as an employee or engages as
        a  consultant  any family  member of any of the  Company's  directors or
        officers.  To  the  best  knowledge  of  the  Company,  there  exist  no
        agreements  among  stockholders  of the  Company to act in concert  with
        respect to their voting or holding of Company securities.

                                      -10-
<PAGE>

               (v) Interest in Competitors. Neither the Company nor, to the best
        of its  knowledge,  any of its officers or directors,  has any interest,
        either by way of contract or by way of investment  (other than as holder
        of not more  than 2% of the  outstanding  capital  stock  of a  publicly
        traded Person) or otherwise, directly or indirectly, in any Person other
        than the Company that (i) provides any services or designs,  produces or
        sells any product or product lines or engages in any activity similar to
        or competitive with any activity  currently  proposed to be conducted by
        the  Company  or any of its  Subsidiaries  or  (ii)  has any  direct  or
        indirect interest in any asset or property,  real or personal,  tangible
        or intangible, of the Company.

               (w)  Registration  Rights.  Except with  respect to  registration
        rights granted in connection with (i) 100,000 options to purchase Common
        Shares  granted to The Equity  Group,  Inc.;  (ii)  Section 8 hereof and
        (iii) 470,359 Common Shares owned by Gregory J. Frazer, the Company will
        not, as of the Closing Date, be under any  obligation to register any of
        its securities under the Securities Act.

               (x) Private  Offering.  Neither the Company nor anyone  acting on
        its behalf has sold or has offered any of the Securities for sale to, or
        solicited offers to buy from, or otherwise approached or negotiated with
        respect thereto with, any prospective purchaser of the Securities, other
        than the  Investor.  Neither the Company nor anyone acting on its behalf
        shall offer the Securities for issue or sale to, or solicit any offer to
        acquire  any of the same from,  anyone so as to bring the  issuance  and
        sale of such Securities,  or any part thereof,  within the provisions of
        Section 5 of the Securities Act. Based upon the  representations  of the
        Investor set forth in Section 5 hereof, the offer,  issuance and sale of
        the  Securities  are and  will  be  exempt  from  the  registration  and
        prospectus  delivery  requirements  of the Securities Act, and have been
        registered   or  qualified   (or  are  exempt  from   registration   and
        qualification)   under  the   registration,   permit  or   qualification
        requirements of all applicable provincial and state securities laws.

               (y)  Brokerage.  Except for amounts  payable to Salomon  Brothers
        Inc.  and RN Capital  (collectively,  the  "Advisors"),  as set forth on
        Schedule 3(y) hereto,  there are no claims for brokerage  commissions or
        finder's  fees  or  similar   compensation   in   connection   with  the
        transactions  contemplated  by this Agreement  based on any  arrangement
        made by or on behalf of the Company and the Company  agrees to indemnify
        and hold the Investor  harmless against any costs or damages incurred as
        a result of any such claim.  Neither of the  Advisors is an affiliate of
        the Company or either of its Subsidiaries, or of any officer or director
        of the Company or either of its Subsidiaries.

               (z) Illegal or Unauthorized  Payments;  Political  Contributions.
        Neither the Company nor any of its Subsidiaries  nor, to the best of the
        Company's  knowledge (after reasonable inquiry of its executive officers
        and directors), any of the current officers and directors of the Company
        or any  of its  Subsidiaries,  has,  directly  or  indirectly,  made  or
        authorized  any payment,  contribution  or gift of money,  property,  or
        services,  (a)  as a

                                      -11-
<PAGE>

        kickback or bribe to any Person or (b) to any political organization, or
        the holder of or any  aspirant  to any  elective  or  appointive  public
        office except for personal political contributions not involving the use
        of funds of the Company or any of its Subsidiaries.

               (aa) Material  Facts.  This  Agreement,  the schedules  furnished
        contemporaneously   herewith,  and  the  other  agreements,   documents,
        certificates or written  statements  furnished or to be furnished to the
        Investor  through  the  Closing  Date by or on behalf of the  Company in
        connection with the transactions  contemplated  hereby taken as a whole,
        do not contain any untrue  statement of a material fact or omit to state
        a material fact  necessary to make the statements  contained  therein or
        herein,  in light of the  circumstances  in which  they were  made,  not
        misleading.  Except for factors affecting the economy or the health care
        industry  generally,  there is no fact which is known to the Company and
        which has not been  disclosed  herein or otherwise by the Company to the
        Investor which is reasonably likely to have a Material Adverse Effect.

               (bb) No Integrated Offering.  Neither the Company, nor any of its
        affiliates,  nor any  person  acting on its  behalf,  has,  directly  or
        indirectly,  made any offers or sales of any security or  solicited  any
        offers  to buy any  security  under  circumstances  that  would  require
        registration of the Securities being offered hereby under the Securities
        Act or the filing of any prospectus under any Canadian securities laws.

        4. Covenants of the Company. The Company covenants and agrees that:

               (a) it shall use its  reasonable  best  efforts  to  satisfy  the
        requirements  of the  conditional  approval  letter of The Alberta Stock
        Exchange as of the Closing Date or as soon as practicable thereafter;

               (b) it will not,  without the Investor's  prior written  consent,
        take any action  prior to the Closing  Date which would result in any of
        the representations or warranties  contained in this Agreement not being
        true at and as of the time immediately  after such action,  or in any of
        the Company's  covenants  contained in this Agreement becoming incapable
        of  performance.  The Company will  promptly  advise the Investor of any
        action or event of which it becomes aware which has the effect of making
        incorrect  any of such  representations  or  warranties or which has the
        effect of rendering any of such covenants incapable of performance; and

               (c)  promptly  after  the  Closing  Date,  and for so long as the
        Investor owns  beneficially  (within the meaning of Rule 13d-3 under the
        Exchange  Act)  at  least   3,333,333   outstanding   Common  Shares  or
        Convertible  Shares (as  appropriately  adjusted  for any stock  splits,
        consolidations  or the like),  the Company shall use its reasonable best
        efforts  to  fix  and  maintain  the  number  of  Directors  that  shall
        constitute the entire Board of Directors of the Company (the "Board") to
        be not  more  than  eleven  (11).  For so  long  as  the  Investor  owns
        beneficially (within the meaning of Rule 13d-3 under the Exchange


                                      -12-
<PAGE>


        Act) a  number  of  outstanding  Common  Shares  or  Convertible  Shares
        constituting  at least 10% of the  outstanding  Common Shares (which for
        this  purpose  shall  include  the  Common  Shares   issuable  upon  the
        conversion of the Convertible  Shares but not the Common Shares issuable
        upon the exercise of the  Warrants),  the Company will  nominate and use
        its  reasonable  best  efforts  to cause to be  elected  and to cause to
        remain  as  directors  on the Board two (2)  persons  designated  by the
        Investor,  who  shall be  reasonably  satisfactory  to the  Company  and
        subject  to  applicable  law  and  the  approval  of The  Alberta  Stock
        Exchange, such number to increase to three (3) if and for as long as the
        number of Directors  that shall  constitute the entire Board shall be in
        excess of eight (8). For purposes of the immediately preceding sentence,
        the  term  "reasonable   best  efforts"  shall  include   adjusting  the
        composition of the Board to include on the Board the number of "Resident
        Canadians,"  as such term is defined in the  Business  Corporations  Act
        (Alberta),  needed to  accommodate  the designees of the Investor and to
        comply with such Act.  Such number of directors to be  designated by the
        Investor shall be (i) decreased by one if the Investor owns beneficially
        (within the meaning of Rule 13d-3  under the  Exchange  Act) a number of
        outstanding Common Shares or Convertible  Shares  constituting less than
        10% of the  outstanding  Common  Shares  (which for this  purpose  shall
        include  the  Common  Shares   issuable  upon  the   conversion  of  the
        Convertible  Shares but not the Common Shares issuable upon the exercise
        of the  Warrants),  and  (ii)  decreased  to none if the  Investor  owns
        beneficially  (within the meaning of Rule 13d-3 under the Exchange  Act)
        less than 3,333,333  outstanding Common Shares or Convertible Shares (as
        appropriately  adjusted  for any  stock  splits,  consolidations  or the
        like).  The  Investor  shall,  during  such  period,  have the  right to
        designate a person,  reasonably  satisfactory to the Company and subject
        to  applicable  law and the approval of The Alberta Stock  Exchange,  to
        fill any vacancy created by the death, disability, retirement or removal
        of any  such  individual  previously  designated  by the  Investor.  The
        Company shall pay all reasonable  out-of-pocket expenses incurred by the
        Directors  designated by the Investor in connection with attending Board
        meetings or transacting other Company business.

               In the  event  that  the  Investor  shall  transfer  to  any  one
        purchaser  beneficial  ownership (within the meaning of Rule 13d-3 under
        the Exchange Act) of at least 6,666,667  outstanding  Convertible Shares
        or Common Shares issued upon  conversion of  Convertible  Shares (all as
        appropriately  adjusted  for any  stock  splits,  consolidations  or the
        like),  then  the  Investor  in its  discretion  may  transfer  to  such
        purchaser its right to designate one (1) director as provided  above. If
        so transferred,  such right shall not be further  transferable and shall
        terminate at such time as such  purchaser  shall own  beneficially  less
        than 3,333,333 outstanding  Convertible Shares or such Common Shares (as
        so  adjusted).   Any  such  purchaser's  designee  shall  be  reasonably
        satisfactory  to the  Company  and  subject  to  applicable  law and the
        approval of The Alberta Stock Exchange.

               (d) Use of Proceeds.  The  proceeds  received by the Company from
        the issuance and sale of the Securities  shall be used by the Company to
        make acquisitions and for working capital purposes.


                                      -13-
<PAGE>

               (e) Financial and Business Information. The Company shall deliver
        to the Investor:

                       (i)  Monthly  and  Quarterly  Statements  -  as  soon  as
               practicable,  and in any event  within 30 days after the close of
               each  month of each  fiscal  year of the  Company  in the case of
               monthly  statements  and 45 days  after  the close of each of the
               first three fiscal quarters of each fiscal year of the Company in
               the case of quarterly  statements,  a consolidated balance sheet,
               statement  of income and  statement  of cash flows of the Company
               and any subsidiaries as at the close of such month or quarter and
               covering  operations  for such month or quarter,  as the case may
               be, and the  portion of the  Company's  fiscal year ending on the
               last day of such month or quarter,  all in reasonable  detail and
               prepared in accordance  with GAAP,  subject to audit and year-end
               adjustments,  setting forth in each case in comparative  form the
               figures for the  comparable  period of the previous  fiscal year.
               The Company  shall also provide  comparisons,  on a quarterly and
               year-to-date basis, of each pertinent item to the budget referred
               to in  subsection  (iii) below;  such  statement  shall  include,
               without  limitation,  the results of  operations  for all clinics
               owned by the  Company  during the same period of both the current
               and the prior fiscal year.

                       (ii) Annual Statements - as soon as practicable after the
               end of each fiscal year of the  Company,  and in any event within
               90 days thereafter, duplicate copies of:

                              (A) a  consolidated  balance  sheet of the Company
                       and any subsidiaries at the end of such year; and

                              (B)    consolidated    statements    of    income,
                       stockholders'  equity and cash flows of the  Company  and
                       any  subsidiaries  for such year,  setting  forth in each
                       case in  comparative  form the figures  for the  previous
                       fiscal year, all in reasonable  detail and accompanied by
                       an  opinion  thereon  of  independent   certified  public
                       accountants of recognized  national  standing selected by
                       the Company.

                       (iii) Business Plan;  Projections - no later than 30 days
               prior to the commencement of each fiscal year of the Company,  an
               annual  business  plan  of the  Company  and  operating  results,
               prepared on a monthly  basis,  and a three year  business plan of
               the Company and projections of operating  results.  Such business
               plans and projections shall contain such substance and detail and
               shall be in such  form as will be  reasonably  acceptable  to the
               Investor.

                       (iv) Audit Reports - promptly upon receipt  thereof,  one
               copy of each other financial  report and internal  control letter
               submitted to the Company


                                      -14-
<PAGE>

               by independent accountants in connection with any annual, interim
               or special audit made by them of the books of the Company.

                       (v)  Other  Reports  -  promptly   upon  their   becoming
               available, one copy of: each financial statement,  report, notice
               or proxy statement sent by the Company to stockholders generally;
               each  financial  statement,  report,  notice or definitive  proxy
               statement sent by the Company or any of its  subsidiaries  to the
               Commission  or any  successor  agency or any Canadian  securities
               regulatory  authority,  if  applicable;  each regular or periodic
               report  and any  registration  statement,  prospectus  or written
               communication (other than transmittal letters) in respect thereof
               filed by the Company or any subsidiary  with, or received by such
               Person in  connection  therewith  from,  any  domestic or foreign
               securities  exchange,  the Commission or any successor  agency or
               any foreign regulatory  authority performing functions similar to
               the  Commission;  any press release  issued by the Company or any
               subsidiary;   and  any  material  communications  of  any  nature
               whatsoever  prepared by the  Commission or any  successor  agency
               thereto or any Canadian  securities  regulatory  authority or any
               state blue sky or securities law  commission  which relates to or
               affects in any way the Company or any subsidiary.

                       (vi) Progress Report - prior to each regularly  scheduled
               meeting of the Board of  Directors  of the  Company,  a narrative
               report  of the  Company's  activities  since the date of the last
               such report,  including a  description  of business  development,
               operating results and marketing efforts.

                       (vii) Requested Information - with reasonable promptness,
               such  other  data  and  information  as from  time to time may be
               reasonably requested by the Investor.

               (f)  Inspection.  The  Company  shall  permit the  Investor,  its
        nominees, and representatives to visit and inspect any of the properties
        of the  Company  and its  Subsidiaries,  to  examine  all its  books  of
        account, records, reports and other papers not contractually required of
        the  Company  to be kept  confidential  or  secret,  to make  copies and
        extracts  therefrom,  and to discuss its affairs,  finances and accounts
        with the Company's  officers,  directors,  key employees and independent
        public  accountants  or any of them (and by this  provision  the Company
        authorizes said accountants to discuss with such Investor,  its nominees
        and  representatives  the  finances  and  affairs of the Company and its
        Subsidiaries),  all at such  reasonable  times  and as  often  as may be
        reasonably requested.

               (g) Takeover Statute.  If any corporate  takeover provision under
        the laws of any provincial, state or federal "fair price", "moratorium",
        "control share  acquisition"  or other similar  antitakeover  statute or
        regulation  shall become  applicable  to the  transactions  contemplated
        hereby,  the Company and the members of the Board  shall,  to the extent


                                      -15-
<PAGE>


        permitted by applicable  law, grant such approvals and take such actions
        as are  necessary so that the  transactions  contemplated  hereby may be
        consummated as promptly as practicable on the terms contemplated  hereby
        and  otherwise  act to eliminate or minimize the effects of such statute
        or regulation on the transactions contemplated hereby.

               (h) Conduct of Business and Maintenance of Existence. The Company
        will  continue  to engage in business  of the same  general  type as now
        conducted by it, and  preserve,  renew and keep in full force and effect
        its corporate  existence and take all reasonable  action to maintain all
        rights,  privileges and franchises  necessary or desirable in the normal
        conduct of its business.

               (i) Compliance with Laws. The Company and its  subsidiaries  will
        comply  in all  material  respects  with  all  applicable  laws,  rules,
        regulations and orders except where the failure to comply would not have
        a Material Adverse Effect.

               (j)   Insurance.   The  Company  will  maintain   insurance  with
        responsible  and reputable  insurance  companies or associations in such
        amounts and  covering  such risks as is usually  carried by companies of
        similar size and credit standing  engaged in similar business and owning
        similar  properties,   provided  that  such  insurance  is  and  remains
        available to the Company at commercially reasonable rates.

               (k)  Keeping of Books.  The  Company  will keep  proper  books of
        record and account,  in which full and correct  entries shall be made of
        all  financial  transactions  and the assets and business of the Company
        and its subsidiaries in accordance with GAAP.

               (l) Lost,  etc.  Certificates  Evidencing  Securities  (or Common
        Shares);  Exchange.  Upon receipt by the Company of evidence  reasonably
        satisfactory to it of the loss, theft,  destruction or mutilation of any
        certificate  evidencing  any  Securities  or Common  Shares owned by the
        Investor,  and (in  the  case  of  loss,  theft  or  destruction)  of an
        unsecured  indemnity  satisfactory to it, and upon  reimbursement to the
        Company  of  all  reasonable  expenses  incidental  thereto,   and  upon
        surrender  and  cancellation  of such  certificate,  if  mutilated,  the
        Company  will  make  and  deliver  in  lieu of  such  certificate  a new
        certificate of like tenor and for the number of securities  evidenced by
        such certificate which remain outstanding.  The Investor's  agreement of
        indemnity  shall  constitute  indemnity  satisfactory to the Company for
        purposes  of  this  Section  4(l).  Upon  surrender  of any  certificate
        representing any securities of the Company for exchange at the office of
        the  Company,  the  Company  at its  expense  will cause to be issued in
        exchange therefor new certificates in such denomination or denominations
        as  may be  requested  for  the  same  aggregate  number  of  securities
        represented by the certificate so surrendered and registered in the name
        of the Investor.

               (m)  Limitations  on Corporate  Actions.  The Company  shall not,
        without the consent of the Investor, such consent not to be unreasonably
        withheld, (A) sell, lease,


                                      -16-
<PAGE>


        exchange  or  transfer  all or  substantially  all of its  assets to any
        person  other than an  affiliate  of the  Company;  (B)  amalgamate  the
        Company with another  corporation with the effect that the then existing
        shareholders of the Company,  ordinarily having the right to vote in the
        election of directors,  hold less than 51% of the combined  voting power
        of the amalgamated  corporation;  (C) permit either Subsidiary to merge,
        amalgamate  or  consolidate  with or into another  corporation  with the
        effect that the Company will hold less than 51% of the  combined  voting
        power of the surviving corporation;  (D) materially change the nature of
        the Company's business;  (E) effect a liquidation,  amalgamation or sale
        of the  Company or sell  substantially  all of its or its  Subsidiaries'
        assets;  or (F) except as described in Schedule  4(m),  redeem or pay or
        permit  any  of its  Subsidiaries  to  redeem  or pay  any  dividend  or
        distribution on its Common Shares.

               (n) Commencement and Termination of Covenants. The obligations of
        the Company and the rights of the Investor  set forth in Sections  4(e),
        4(f), 4(h), 4(i), 4(j), 4(k) and 4(m) begin as of the Closing Date; from
        and after the Closing Date,  such  obligations  shall terminate once the
        Investor no longer owns  beneficially  (within the meaning of Rule 13d-3
        under the Exchange Act) at least 3,333,333  outstanding Common Shares or
        Convertible  Shares (as  appropriately  adjusted  for any stock  splits,
        consolidations or the like).

               (o) Form D Filing.  The  Company  will timely file a Form D under
        the  Securities  Act in  connection  with  the  offer  and  sale  of the
        Securities.

        5.     Representations,   Warranties  and  Covenants  of  the  Investor;
               Additional Covenants of the Company.

               (a)     General.  The  Investor  hereby  represents  and warrants
                       that:

                       (i) it has full power and authority, corporate and other,
               to execute,  deliver and perform the Transaction Documents and to
               consummate the transactions  contemplated  thereby and to perform
               its  obligations  thereunder.  This Agreement has been, and as of
               the Closing Date the Warrant Agreement will be, duly executed and
               delivered by the Investor. This Agreement constitutes,  and as of
               the Closing Date the Warrant Agreement will constitute, the valid
               and binding  obligation of the Investor  enforceable  against the
               Investor in accordance with their terms;

                       (ii) it is an "accredited investor" within the meaning of
               Rule 501(a) of  Regulation D under the  Securities  Act, and will
               purchase the  Securities  and the Common  Shares  issuable on the
               conversion  of the  Convertible  Shares and the  exercise  of the
               Warrants  for  its  own  account  and  not  with  a  view  to any
               distribution  thereof in a  transaction  that would  violate  the
               Securities Act or the securities  laws of any State of the United
               States  or  any  other  applicable


                                      -17-
<PAGE>

               jurisdiction,  but subject,  nevertheless,  to any requirement of
               law that the disposition of the Investor's  property shall at all
               times be within the Investor's control,  and without prejudice to
               the Investor's right at all times to sell or otherwise dispose of
               all or any part of such securities under a registration statement
               under  the  Securities  Act  or  under  an  exemption  from  said
               registration available under the Securities Act;

                       (iii) it  understands  that an  investment in the Company
               bears a high  degree  of risk  and  represents  that it has  such
               knowledge and  experience in financial and business  matters that
               it is capable of  evaluating  the merits and risks of  purchasing
               the  Securities  and the Common Shares  issuable upon exercise of
               the  Warrants,  and is able to bear  the  economic  risks  of its
               investment for an indefinite period of time; and

                       (iv) it has  received  copies of the  Company SEC Reports
               and has had access to such financial and other  information,  and
               has  been  afforded  the  opportunity  to ask such  questions  of
               representatives of the Company and receive answers thereto, as it
               deems   necessary  in   connection   with  its  purchase  of  the
               Securities.

               (b) Disclosure and Non-Public  Information.  As to so much of the
        information  and other material  furnished  under or in connection  with
        this Agreement  (whether  furnished before, on or after the date hereof,
        including without limitation  information furnished pursuant to Sections
        4(e) and (f) hereof) as  constitutes  or contains  non-public  business,
        financial  or other  information  of the  Company  or either  Subsidiary
        ("Non-Public  Information"),  the Investor  covenants for itself and its
        directors,  officers and  partners  that it will use due care to prevent
        its officers,  directors,  partners, employees, counsel, accountants and
        other representatives from (i) disclosing any Non-Public  Information to
        Persons  other  than  the  Investors's  authorized  employees,  counsel,
        accountants,   shareholders,   partners,   limited  partners  and  other
        authorized  representatives or (ii) using Non-Public  Information in any
        manner  that  would  constitute  a  violation  of  Canadian  federal  or
        provincial or U.S. federal or state securities laws; provided,  however,
        that the  Investor  may  disclose  or deliver any  information  or other
        material  disclosed to or received by it should such Investor be advised
        by its counsel  (such  writing to be delivered to the Company) that such
        disclosure  or delivery is  required by law,  regulation  or judicial or
        administrative  order. In the event of any termination of this Agreement
        prior to the Closing Date,  the Investor shall return to the Company all
        confidential  material  previously  furnished  to such  Investor  or its
        officers, directors, partners, employees, counsel, accountants and other
        representatives  in connection  with this  transaction.  For purposes of
        this Section 5(b), "due care" means at least the same level of care that
        such  Investor  would  use to  protect  the  confidentiality  of its own
        sensitive or proprietary information,  and this obligation shall survive
        termination of this Agreement.


                                      -18-
<PAGE>


               (c) Securities Act Matters.  The Investor  acknowledges  that the
        Securities  are being offered in a transaction  not involving any public
        offering  within  the  meaning  of  the  Securities  Act  and  that  the
        Securities  and the Common Shares  issuable  upon the  conversion of the
        Convertible  Shares  and the  exercise  of the  Warrants  have  not been
        registered under the Securities Act, or under the securities laws of any
        province  of  Canada,  and  agrees  that it will not  sell or  otherwise
        transfer the  Securities  except  pursuant to an effective  registration
        statement  under the Securities Act or Canadian  securities laws or in a
        transaction which, in the opinion of counsel reasonably  satisfactory to
        the Company, qualifies as an exempt transaction under the Securities Act
        and the rules  and  regulations  promulgated  thereunder.  The  Investor
        acknowledges that certificates for the Securities and such Common Shares
        will bear a legend  reflecting  the  substance  of this Section 5(c) and
        that  appropriate  stop  transfer  orders  may be  lodged  with  respect
        thereto.

               (d) Limitation on Transfer.  The Investor agrees that it shall in
        no event sell or  otherwise  transfer  (i) any of the  Securities  for a
        period ending six months from the Closing Date or (ii) any of the Common
        Shares  issuable upon the conversion or exercise of the Securities for a
        period of six months from the Closing  Date.  If such Common  Shares are
        issued on a date later than six months from the Closing Date, they shall
        be freely transferrable, subject to applicable securities laws.

               (e)  No  Intention  of  Board  to  Pay  Dividends.  The  Investor
        acknowledges  that  the  Board  of  Directors  of  the  Company  has  no
        obligation  to declare and has no present  intention  of  declaring  any
        dividends  on the  Convertible  Shares,  but that  such  dividends  will
        nevertheless accumulate pursuant to the terms of the Convertible Shares.

               (f) Hart-Scott Act Compliance.  The Company and the Investor will
        promptly  prepare  and file,  or cause to be  prepared  and  filed,  any
        notification  or  response to any  request  for  additional  information
        required  to be  filed  under  the  Hart-Scott  Act  and the  rules  and
        regulations  promulgated  thereunder  with respect to the acquisition of
        the  Securities and the  acquisition  of Common  Shares,  if any, by the
        Investor upon  conversion or exercise of any of the  Securities.  If any
        additional  filings are required  under the Hart-Scott Act in connection
        with the  exercise  of the  Warrants  or the  acquisition  of any  other
        Securities, the Company shall promptly, and in any event within ten-days
        following a written  request  from the  Investor,  prepare and file,  or
        cause to be  prepared  and filed,  any  notification  or response to any
        request  for  additional  information  required  to be filed  under  the
        Hart-Scott Act and the rules and regulations  promulgated  thereunder in
        connection  with any  acquisition,  conversion or exercise of any of the
        Securities.

               (g) Consents and Approvals. The Company and the Investor will use
        their  respective  reasonable  best  efforts  to obtain as  promptly  as
        practicable  any  consent  or  approval  of any  Person,  including  any
        regulatory  authority,  required  in  connection  with the  transactions
        contemplated hereby.

                                      -19-
<PAGE>


               (h)   Acknowledgments   Regarding  the  Advisors.   The  Investor
        acknowledges  that the Advisors are acting as financial  advisors to the
        Company in connection with the Securities  being offered hereby and will
        be compensated by the Company for acting in such capacity,  as set forth
        in Schedule  3(y) hereto.  The Investor  further  acknowledges  that the
        Advisors  have acted  solely as  financial  advisors  to the  Company in
        connection with the offering of the Securities by the Company,  that the
        information  and data provided to the Investor  relating to the Company,
        its  operations  and  financial  condition  have not been  subjected  to
        independent  verification by the Advisors, and that the Advisors make no
        representation  or warranty with respect to the accuracy or completeness
        of such information,  data or other related  disclosure  documents.  The
        Investor further  acknowledges that in making its decision to enter into
        this  Agreement  and purchase the  Securities,  it has relied on its own
        examination  of the  Company  and  the  terms  of,  and  the  risks  and
        consequences of holding, the Securities.

        6.     Conditions to Closing.

               (a) The  obligations  of the  Investor  hereunder  at the Closing
        shall  be  subject  to  the  performance  by  the  Company  of  all  its
        obligations  hereunder  to be  performed on or prior to the Closing Date
        and to the satisfaction, prior thereto or concurrently therewith, of the
        following conditions:

                       (i) Representations  and Warranties.  The representations
               and warranties of the Company  contained in this Agreement  shall
               be true on and as of the Closing  Date as though such  warranties
               and  representations  were made at and as of such date, except as
               otherwise affected by the transactions contemplated hereby.

                       (ii) Compliance  with  Agreement.  The Company shall have
               performed  and  complied  with  all  agreements,   covenants  and
               conditions  contained in this Agreement  which are required to be
               performed  or  complied  with by the  Company  prior to or on the
               Closing Date.

                       (iii) No Legislation or Injunction. There shall have been
               adopted  no law or  regulation  and there  shall be no  effective
               injunction,  writ, preliminary  restraining order or any order of
               any  nature   issued  by  a  court  of   competent   jurisdiction
               prohibiting  the  transactions  provided  for in the  Transaction
               Documents  or  any of  them  from  being  consummated  as  herein
               provided.

                       (iv)  Adverse  Developments.  There  shall  have  been no
               developments  in  the  business  of  the  Company  or  any of its
               Subsidiaries  which in the  reasonable  opinion  of the  Investor
               would have a Material Adverse Effect.

                       (v)  Consents  and  Approvals.  All  filings,   consents,
               waivers,  authorizations,  licenses,  permits,  certificates  and
               approvals of any Person required to have


                                      -20-
<PAGE>


               been  made  or  obtained  on or  prior  to the  Closing  Date  in
               connection  with the execution,  delivery and performance of this
               Agreement,  all of which are set forth on Schedule  3(f)  hereto,
               shall have been duly made or obtained  and shall be in full force
               and effect on the Closing Date.

                       (vi)  Officers'  Certificate.   The  Company  shall  have
               delivered  to  the  Investor  a  certificate   of  the  Company's
               President and Chief  Executive  Officer,  dated as of the Closing
               Date,  certifying that the conditions  specified in the foregoing
               Sections 6(a)(i) through (v) hereof have been fulfilled.

                       (vii)  Opinions  of  Counsel.  The  Investor  shall  have
               received  (a) from Ballem  MacInnes,  counsel to the  Company,  a
               legal opinion, dated as of the Closing Date, in substantially the
               form of  Exhibit  D-1  hereto,  and (b) from  Carter,  Ledyard  &
               Milburn,  special United States  counsel to the Company,  a legal
               opinion,  dated as of the Closing Date, in substantially the form
               of Exhibit D-2 hereto;

                       (viii) Secretary's  Certificate.  The Investor shall have
               received a certificate,  dated the Closing Date, of the Secretary
               of the  Company  attaching  (i) a true and  complete  copy of the
               constating documents of the Company, with all amendments thereto,
               (ii) true and complete copies of the Company's  By-Laws in effect
               as of such  date,  (iii)  certificates  of good  standing  of the
               appropriate  officials of the  jurisdictions  of incorporation of
               the Company and each Subsidiary and of each jurisdiction in which
               the Company and each  Subsidiary is qualified to do business as a
               foreign  corporation,  (iv) resolutions of the Board  authorizing
               the execution and delivery of the  Transaction  Documents and the
               transactions contemplated thereby, the issuance of the Securities
               and the reservation for issuance of a sufficient number of Common
               Shares into which the  Securities  may be converted or exercised,
               as the case may be,  and (v) proof of filing of the  Articles  of
               Amendment to designate the Series A Convertible Preferred Shares.

                       (ix) Approval of Proceedings. All proceedings to be taken
               in  connection  with  the   transactions   contemplated  by  this
               Agreement,   and  all  documents   incident  thereto,   shall  be
               reasonably satisfactory in form and substance to the Investor and
               its special counsel,  Willkie Farr & Gallagher;  and the Investor
               shall have  received  copies of all  documents or other  evidence
               which it and Willkie Farr & Gallagher may  reasonably  request in
               connection with such transactions and of all records of corporate
               proceedings  in  connection   therewith  in  form  and  substance
               reasonably  satisfactory  to  the  Investor  and  Willkie  Farr &
               Gallagher.

                       (x) Warrant  Agreement.  The Warrant Agreement shall have
               been executed and delivered.


                                      -21-
<PAGE>

                       (xi) Shareholders' Agreement. The Shareholders' Agreement
               shall have been executed and delivered.

                       (xii) Recent Financial Statements. The Company shall have
               provided the Investor  with its most recent  Quarterly  Report on
               Form 10-QSB filed with the  Commission  subsequent to the date of
               this Agreement.

                       (xiii)  Filing of  Convertible  Shares  Certificate.  The
               Company shall have filed or caused to be filed with the Registrar
               of  Corporations  of the  Province of Alberta  (the  "Registrar")
               Articles  of  Amendment  to  amend  the  Company's   Articles  of
               Incorporation  to designate  the Series A  Convertible  Preferred
               Shares, such series to have the terms set forth in Exhibit C, and
               such Articles of Amendment shall have been accepted for filing by
               the Registrar.

                       (xiv) Conditional Approval of The Alberta Stock Exchange.
               The conditional  approval of The Alberta Stock Exchange  received
               by the  Company  with  respect to the  transactions  contemplated
               hereby on November 20, 1997, shall remain in effect and unamended
               other than with respect to confirmation  as to the  acceptability
               of  the  anti-dilution   provisions  set  forth  in  the  Warrant
               Agreement and the terms of the Convertible Shares attached hereto
               as  Exhibit  C.  Such  conditional  approval  shall  specify  the
               following as to the  transactions  contemplated  hereby:  (A) the
               limitations  on transfer  applicable  to the  Securities  and the
               Common  Shares  issuable  upon  conversion  or  exercise  of  the
               Securities as contemplated in Section 5(d) hereof;  (B) an expiry
               date for the  Warrants  of not less than three (3) years from the
               date of their issuance;  (C) confirmation of the acceptability of
               the  anti-dilution  provisions set forth in the Warrant Agreement
               and the terms of the  Convertible  Shares  set forth in Exhibit C
               (which  may be  included  in a side  letter);  and (D) such other
               terms as are customary in similar transactions.

                       (xv)  Antitrust  Approvals.  The waiting period under the
               Hart-Scott Act and other applicable antitrust  regulations of any
               applicable jurisdictions shall have expired or been terminated.

                       (xvi)  Directors.  As of the Closing Date,  the person or
               persons  designated  by the Investor in  accordance  with Section
               4(c) hereof shall have been appointed to the Board.

                       (xvii) Employment  Agreements.  Employment  agreements by
               and between the Company and each of Brandon M.  Dawson,  Edwin J.
               Kawasaki  and  Randall  E.  Drullinger,  in forms to be  mutually
               agreed upon in good faith by the  Investor,  the Company and such
               persons, shall have been executed and delivered.


                                      -22-
<PAGE>

               (b) The  obligations  of the  Company  at the  Closing  shall  be
        subject to the  performance  by the  Investor of all of its  obligations
        hereunder  to be  performed  on or prior to the Closing  Date and to the
        satisfaction,  prior thereto or concurrently therewith, of the following
        conditions:

                       (i)  Consents  and  Approvals.  All  filings,   consents,
               waivers,  authorizations,  licenses,  permits,  certificates  and
               approvals of any Person required to have been made or obtained on
               or prior to the Closing Date in  connection  with the  execution,
               delivery and performance of this Agreement,  all of which are set
               forth on  Schedule  3(f)  hereto,  shall  have  been duly made or
               obtained  and shall be in full  force and  effect on the  Closing
               Date.

                       (ii) No Legislation or Injunction.  There shall have been
               adopted  no law or  regulation  and there  shall be no  effective
               injunction,  writ, preliminary  restraining order or any order of
               any  nature   issued  by  a  court  of   competent   jurisdiction
               prohibiting  the  transactions  provided  for in the  Transaction
               Documents  or  any of  them  from  being  consummated  as  herein
               provided.

                       (iii) General Partner's  Certificate.  The Investor shall
               have  delivered  to the  Company  a  certificate  of the  General
               Partner of the Investor,  dated as of the Closing Date, affirming
               the   continuing   accuracy  as  of  the  Closing  Date,  of  the
               representations   and  warranties  and  the  performance  of  all
               agreements made by the Investor in this Agreement.

                       (iv)  Antitrust  Approvals.  The waiting period under the
               Hart-Scott Act and other applicable antitrust  regulations of any
               applicable jurisdictions shall have expired or been terminated.

        7.  Expenses of Sale. In the absence of a default by the Investor in the
performance of its  obligations  hereunder,  the Company shall pay, or reimburse
the Investor for all reasonable  out-of-pocket expenses incurred by the Investor
in  connection  with  this  transaction,   including  without  limitation,   the
reasonable fees and  disbursements  of its counsel in connection  herewith.  The
Company shall pay all finders' or brokers' fees or similar payments  incurred by
it in connection with the transactions  contemplated hereby,  including any fees
and payments payable to the Advisors.  The Investor represents and warrants that
it has not  incurred  any  liability  for,  and is unaware of any claim for, any
finders'  or  brokers'  fees  or  similar   payments  in  connection   with  the
transactions contemplated hereby.


                                      -23-
<PAGE>

        8.     Registration Rights.

               (a) For the  purpose of this  Section  8, the term  "Registerable
        Shares"  shall  mean  (i)  the  Common  Shares  issuable  upon  (a)  the
        conversion  of the  Convertible  Shares,  and  (b) the  exercise  of the
        Warrants; and (ii) any share capital of the Company issued as a dividend
        or  other  distribution  with  respect  to,  or in  exchange  for  or in
        replacement of, the Common Shares referred to in clause (i).

               (b) At any  time  subsequent  to 180  days  from  the date of the
        Closing, the Investor may request, in writing, that the Company register
        all or  part  of the  Registerable  Shares  issued,  or  issuable,  upon
        conversion  of the  Convertible  Shares for resale under the  Securities
        Act. The Company  will,  as soon as  practicable  after  receipt of such
        request,  prepare and file with the  Commission,  at the  Company's  own
        expense, a registration statement under the Securities Act sufficient to
        permit the public  offering of all or such portion of such Common Shares
        as are  specified in such request.  The Company will use its  reasonable
        best efforts to cause such  registration  statement to become  effective
        under the Securities Act (including,  without limitation,  the execution
        of  an  undertaking  to  file  post-effective  amendments,   appropriate
        qualification  under  applicable blue sky or other state securities laws
        and appropriate  compliance with applicable regulations issued under the
        Securities  Act) as promptly as  practicable.  The Company shall only be
        obligated  to file one such  registration  statement  under this Section
        8(b) provided that such registration  statement pursuant to this Section
        8(b) shall have been declared or ordered effective and the sales of such
        Common  Shares  shall have been  closed.  However,  if the sales of such
        Common Shares have not closed,  the Investor may preserve its one demand
        registration  right under this Section 8(b) by paying all the  Company's
        Registration   Expenses   (as  defined   below)   associated   with  the
        registration of such Common Shares;  provided that such right may not be
        exercised  until 90 days after the effective  date of such  registration
        statement.

               (c) At any  time  subsequent  to 180  days  from  the date of the
        Closing, the Investor may request, in writing, that the Company register
        all or a part of the Common Shares issued, or issuable, upon exercise of
        the Warrants for resale under the  Securities  Act. The Company will, as
        soon as practicable after receipt of such request, prepare and file with
        the Commission,  at the Company's own expense, a registration  statement
        under the Securities Act sufficient to permit the public offering of all
        or such portion of such Common  Shares as are specified in such request.
        The  Company  will  use  its  reasonable  best  efforts  to  cause  such
        registration  statement to become  effective  under the  Securities  Act
        (including,  without limitation, the execution of an undertaking to file
        post-effective  amendments,  appropriate  qualification under applicable
        blue sky or other state securities laws and appropriate  compliance with
        applicable  regulations  issued under the Securities Act) as promptly as
        practicable.  The  Company  shall  only be  obligated  to file  one such
        registration  statement  under  this  Section  8(c)  provided  that such
        registration  statement


                                      -24-
<PAGE>


        pursuant  to this  Section  8(c)  shall  have been  declared  or ordered
        effective  and the  sales  of such  Common  Shares  shall  have  closed.
        However,  if the  sales  of such  Common  Shares  have not  closed,  the
        Investor  may  preserve  its one demand  registration  right  under this
        Section  8(c) by paying  all the  Company's  Registration  Expenses  (as
        defined below)  associated with the  registration of such Common Shares;
        provided  that such right may not be  exercised  until 90 days after the
        effective date of such registration statement.

               (d) If the Investor intends to distribute the Registerable Shares
        covered by its request  pursuant to Section  8(b) or 8(c) by means of an
        underwriting,  it shall so advise the  Company as a part of its  request
        made pursuant to Section 8(b) or 8(c).

               If holders of securities  of the Company other than  Registerable
        Shares who are entitled,  by contract with the Company or otherwise,  to
        have   securities   included   in  such  a   registration   (the  "Other
        Stockholders")  request  such  inclusion,  the  Investor  shall offer to
        include the securities of such Other  Stockholders  in the  underwriting
        and  may  condition  such  offer  on  their  acceptance  of the  further
        applicable  provisions  of this  Section 8. The Investor and the Company
        shall  (together  with all Other  Stockholders  proposing to  distribute
        their securities through such  underwriting)  enter into an underwriting
        agreement in customary form with the  representative  of the underwriter
        or  underwriters  selected  for such  underwriting  by the  Investor and
        reasonably   acceptable  to  the  Company.   Notwithstanding  any  other
        provision of this Section 8, if the representative  advises the Investor
        in writing that marketing  factors require a limitation on the number of
        shares to be  underwritten,  the securities of the Company held by Other
        Stockholders  shall be excluded from such  registration to the extent so
        required by such  limitation.  If,  after the  exclusion of such shares,
        further reductions are still required,  the number of shares included in
        the registration by the Investor shall be reduced by such minimum number
        of shares as is necessary to comply with such request.  No  Registerable
        Shares or any other securities  excluded from the underwriting by reason
        of the  underwriter's  marketing  limitation  shall be  included in such
        registration. If the Investor or any Other Stockholder who has requested
        inclusion in such  registration  statement as provided above disapproves
        of the terms of the  underwriting,  such  person  may elect to  withdraw
        therefrom by written  notice to the  Company,  the  underwriter  and the
        Investor,  and the securities so withdrawn  shall also be withdrawn from
        registration.  If the person  electing such  withdrawal is the Investor,
        then the demand  right  exercised  under  Section  8(b) or 8(c) shall be
        preserved  and may be  exercised a second  time if (A) the  registration
        statement   covering  such  underwriting  is  not  declared  or  ordered
        effective,  or (B) the registration statement covering such underwriting
        is declared effective and (i) the sale of at least 500,000 Common Shares
        by Other Stockholders pursuant to such underwriting shall close, or (ii)
        the Investor  pays all the Company's  Registration  Expenses (as defined
        below)  associated  with the  registration  of such Common Shares and 90
        days  shall  elapse  after  the  effective  date  of  such  registration
        statement. If the underwriter has not limited the number of Registerable
        Shares to be  underwritten,  the Company may include its  securities for
        its own account in such registration if the representative so agrees and
        if the number of

                                      -25-
<PAGE>

        Registerable  Shares which would  otherwise  have been  included in such
        registration and underwriting will not thereby be limited.

               (e) If at any time  subsequent  to 180 days  from the date of the
        Closing,  the Company proposes to register any of its equity  securities
        under the  Securities  Act either for its own account or for the account
        of a  security  holder or holders  exercising  their  respective  demand
        registration  rights,  (on a form  other  than  Form S-4 or S-8 or their
        equivalents),  the  Company  will (i)  promptly  notify the  Investor in
        writing (which written notice shall include, to the extent known, a list
        of the  jurisdictions in which the Company intends to attempt to qualify
        such securities  under the applicable blue sky or other state securities
        laws)  that  such  registration  statement  will be  filed  and that the
        Registerable Shares which are then held by the Investor will be included
        in such  registration  statement  at its request and (ii) subject to the
        last sentence of this subsection (e), cause such registration  statement
        to cover  all  Registerable  Shares  which it has been so  requested  to
        include by the  Investor,  provided  such  request is  delivered  to the
        Company  not  later  than 20 days  after  such  notice  is  given to the
        Investor and specifies the number of Registerable  Shares to be included
        in the proposed  registration  statement.  Notwithstanding the foregoing
        provisions,  if such  registration  statement relates to an underwritten
        offering of Common Shares and the managing  underwriter shall inform the
        Company  and the  Investor  in  writing  that the  managing  underwriter
        believes  that the number of Common  Shares  requested to be included in
        such  registration  statement  would  materially  adversely  affect  its
        ability to effect such  offering,  then the Company will include in such
        registration  statement the number of Common Shares which the Company is
        so  advised  can be sold in (or  during  the time of) such  offering  as
        follows:  first,  all shares  proposed by the Company to be sold for its
        own account,  and,  second,  such  Registerable  Shares  requested to be
        included in such  registration  statement,  pro rata by the Investor and
        other security holders  exercising  registration  rights on the basis of
        the number of Registerable Shares and other Common Shares so proposed to
        be sold  by the  Investor  and by such  other  security  holders  and so
        requested to be included.

               (f) In connection with any registration  statement filed pursuant
        to this Section 8 (a "Registration  Statement"),  the Company shall take
        such action as may be necessary to register or qualify the  Registerable
        Shares  registered  thereunder  under the securities or Blue Sky laws of
        such states of the United States as shall reasonably be requested by the
        Investor,  and shall do any and all other acts which may be necessary or
        advisable  to permit  the  proposed  sale or other  disposition  of such
        Registerable  Shares in any such state;  provided that in no event shall
        the Company be obligated in connection therewith to qualify as a foreign
        corporation in any jurisdiction where it is not already so qualified, or
        to execute a general  consent for service of process in suits other than
        those arising out of the offer and sale of the Registerable  Shares,  or
        to  take  any  action  which  would   subject  it  to  taxation  in  any
        jurisdiction where it is not then so subject.

                                      -26-
<PAGE>

               (g) The  Company's  obligations  under this Section 8 to register
        and qualify  Registerable  Shares shall be  conditioned in each instance
        upon the  timely  receipt by the  Company in writing of (i)  information
        from  the  Investor  as to the  proposed  plan  of  distribution  of the
        Registerable  Shares to be included in the Registration  Statement,  and
        (ii) such other  information as the Company may reasonably  require from
        the Investor for inclusion in the Registration Statement.

               (h) All  Registration  Expenses (as defined  below) in connection
        with each Registration Statement (or seeking or obtaining the opinion of
        counsel to the Company under Section 8(i) and, if in the sole discretion
        of  the  Company  deemed  desirable,   any  no-action  position  of  the
        Commission  with  respect  to  sales  pursuant  to Rule  144  under  the
        Securities Act), in complying with applicable state securities laws, and
        with any other  qualification or compliance  pursuant to this Section 8,
        shall be borne by the Company.  All Selling  Expenses (as defined below)
        shall be borne by the holders of the  securities so registered  pro rata
        on the basis of the number of their shares so registered. The Company at
        its expense will furnish the Investor  with copies of such  Registration
        Statement and the prospectus  included therein and in such quantities as
        may be  reasonably  requested by the Investor.  In connection  with each
        Registration Statement, the Company shall furnish the Investor with such
        opinions of counsel,  comfort letters of accountants,  certificates  and
        such other documents that are customary in connection with  underwritten
        public  offerings  and that are  reasonably  requested by the  Investor.
        "Registration  Expenses" shall mean all expenses incurred by the Company
        in compliance with Sections 8(b) through (f) hereof, including,  without
        limitation,  all registration and filing fees,  printing expenses,  fees
        and  disbursements of counsel for the Company,  fees and expenses of one
        counsel for all the holders of  Registerable  Shares in an amount not to
        exceed  $15,000,  blue sky  fees and  expenses  and the  expense  of any
        special  audits  incident to or required by any such  registration  (but
        excluding the  compensation of regular  employees of the Company,  which
        shall be paid in any event by the  Company).  "Selling  Expenses"  shall
        mean all brokerage fees,  underwriting discounts and selling commissions
        applicable to the sale of Registerable Shares.

               (i) The Company  shall not be required by this  Section 8 to file
        any Registration  Statement  relating to the Registerable  Shares of the
        Investor  if the  Company  shall  furnish  the  Investor  with a written
        opinion of counsel reasonably satisfactory to the Investor to the effect
        that the  proposed  public  offering or other  transfer of  Registerable
        Shares  as to  which  registration  is  requested  is  exempt  from  the
        registration or qualification requirements of all applicable federal and
        state  securities laws and would result in all purchasers or transferees
        thereof  obtaining  securities which are not "restricted  securities" as
        defined in Rule 144 under the Securities Act.

               (j) If, after the date hereof,  the Company  grants to any person
        registration  rights which are more  favorable to such person than those
        afforded  to the  Investor  under


                                      -27-
<PAGE>


        this Section 8, the Investor shall without further action be entitled to
        the benefits of such more favorable rights.

               (k)  Registration  Procedures.  In the case of each  registration
        effected by the Company  pursuant  to this  Section 8, the Company  will
        keep  the  Investor,  as  applicable,  advised  in  writing  as  to  the
        initiation of each registration and as to the completion thereof. At its
        expense, the Company will:

                       (i) keep such registration  effective for a period of one
               hundred eighty (180) days or until the Investor has completed the
               distribution  described in the  registration  statement  relating
               thereto,  whichever first occurs; provided,  however, that in the
               case of any registration of Registerable Shares on Form S-3 which
               are intended to be offered on a continuous or delayed basis, such
               180-day  period  shall be  extended  until all such  Registerable
               Shares are sold,  provided that Rule 415, or any  successor  rule
               under the Securities Act,  permits an offering on a continuous or
               delayed basis,  and provided  further that applicable rules under
               the   Securities   Act  governing   the   obligation  to  file  a
               post-effective   amendment   permit,   in   lieu  of   filing   a
               post-effective   amendment  which  (y)  includes  any  prospectus
               required by Section 10(a) of the  Securities  Act or (z) reflects
               facts or events  representing a material or fundamental change in
               the  information  set forth in the  registration  statement,  the
               incorporation by reference of information required to be included
               in (y) and (z) above to be  contained in periodic  reports  filed
               pursuant  to  Section  13 or  15(d)  of the  Exchange  Act in the
               registration statement;

                       (ii)  furnish  such  number  of  prospectuses  and  other
               documents  incident thereto as the Investor from time to time may
               reasonably request;

                       (iii)  notify the  Investor at any time when a prospectus
               relating thereto is required to be delivered under the Securities
               Act of the  happening  of any  event  as a result  of  which  the
               prospectus  included in such registration  statement,  as then in
               effect,  includes an untrue statement of a material fact or omits
               to  state a  material  fact  required  to be  stated  therein  or
               necessary to make the  statements  therein not  misleading in the
               light of the circumstances then existing; and

                       (iv) furnish,  on the date that such Registerable  Shares
               are delivered to the  underwriters  for sale, if such  securities
               are being sold through  underwriters  or, if such  securities are
               not  being  sold  through  underwriters,  on the  date  that  the
               registration  statement with respect to such  securities  becomes
               effective,  (1) an opinion, dated as of such date, of the counsel
               representing  the Company for the purposes of such  registration,
               in form and substance as is customarily  given to underwriters in
               an underwritten  public  offering and reasonably  satisfactory to
               the Investor addressed to the Investor and (2) a letter, dated as
               of such date, from the independent  certified public  accountants
               of the Company,  in form and substance


                                      -28-
<PAGE>

               as  is  customarily   given  by  independent   certified   public
               accountants to underwriters  in an  underwritten  public offering
               and  reasonably  satisfactory  to the  Investor  addressed to the
               underwriters,  if any, and if permitted by applicable  accounting
               standards, to the Investor.

               (l) Rule  144  Reporting.  With a view to  making  available  the
        benefits of certain rules and  regulations of the  Commission  which may
        permit  the  sale  of  restricted   securities  to  the  public  without
        registration, the Company agrees to:

                       (i) make and keep public  information  available as those
               terms are  understood  and defined in Rule 144, at all times from
               and after ninety (90) days  following the  effective  date of the
               first  registration under the Securities Act filed by the Company
               for an offering by it of its securities to the general public;

                       (ii) use its  reasonable  best  efforts  to file with the
               Commission  in a timely  manner all reports  and other  documents
               required of the Company under the Securities Act and the Exchange
               Act at any time  after it has become  subject  to such  reporting
               requirements; and

                       (iii)  so  long as the  Investor  owns  any  Registerable
               Shares, furnish to the Investor upon request, a written statement
               by the  Company  as to its  compliance  with the  current  public
               information  requirements of Rule  144(c)(1),  a copy of the most
               recent annual or quarterly report of the Company,  and such other
               reports and  documents so filed as the  Investor  may  reasonably
               request  in  availing  itself  of any rule or  regulation  of the
               Commission  allowing  the  Investor  to sell any such  Securities
               without registration.

               (m) The Company  shall not be  required to effect a  registration
        pursuant  to  Section  8(b)  or 8(c) if at the  time of any  request  to
        register  Registerable Shares, the Company has filed or will file within
        60 days of the time of the request a  registration  statement  under the
        Securities  Act with  respect  to a  public  offering  as to  which  the
        Investor may include  Registerable  Shares pursuant to Section 8(e). The
        Company  may, at its option,  direct that such  request be delayed for a
        period not in excess of three  months  from the  effective  date of such
        offering,  such right to delay a request to be  exercised by the Company
        not more than once in any one-year period.

               (n) Transfer of  Registration  Rights.  The rights granted to the
        Investor to cause the Company to register  securities under Section 8(b)
        or 8(c) may be assigned to a transferee or assignee in  connection  with
        the sale or other transfer of at least 500,000  Registerable  Shares (as
        appropriately  adjusted  for any stock  splits,  consolidations,  or the
        like),  provided  that (i) such  transfer  may  otherwise be effected in
        accordance  with applicable  securities  laws, (ii) the Company is given
        reasonably  prompt  written  notice  of such  assignment,  and (iii) the
        rights  provided  in  each of  Section  8(b)  and  Section  8(c)


                                      -29-
<PAGE>

        may be exercised only once, except as otherwise provided in this Section
        8, by either the Investor or a transferee.

        9.     Indemnification.

               (a) In the  event of the  filing  of any  Registration  Statement
        pursuant to Section 8 hereof,  the Company  agrees to indemnify and hold
        harmless the Investor and each person, if any, who controls the Investor
        within the meaning of the  Securities  Act,  against any and all losses,
        claims, damages or liabilities, joint or several (including the costs of
        any reasonable  investigation  and legal and other expenses  incurred in
        connection with, and any amount paid in settlement of, any action,  suit
        or proceeding or any claim  asserted) to which they, or any of them, may
        become  subject  under the  Securities  Act,  the  Exchange Act or other
        federal or state law or regulation, at common law or otherwise,  insofar
        as such losses,  claims,  damages or liabilities  (or actions in respect
        thereof) arise out of or are based upon any untrue  statement or alleged
        untrue  statement  of a material  fact  contained  in such  Registration
        Statement, or any related preliminary prospectus,  final prospectus,  or
        amendment  thereof or supplement  thereto,  or arise out of or are based
        upon any omission or alleged  omission to state  therein a material fact
        required  to be  stated  therein  or  necessary  to make the  statements
        therein,  in light of the circumstances  under which they were made, not
        misleading;  provided,  however,  that the  Company  shall not be liable
        under this  Section  9(a) in any such case to the  extent  that any such
        losses,  claims, damages or liabilities arise solely out of or are based
        upon an untrue statement of a material fact contained in or any omission
        of  a  material  fact  from  such  Registration  Statement,  preliminary
        prospectus,  final prospectus or amendment thereof or supplement thereto
        in reliance  upon,  and in  conformity  with,  information  furnished in
        writing to the Company by the  Investor  specifically  for use  therein.
        This  indemnity  will be in addition to any liability  which the Company
        may otherwise have.

               (b) The  Investor  agrees  to  indemnify  and hold  harmless  the
        Company,  each other person  referred to in subparts (1), (2) and (3) of
        Section  11(a) of the  Securities  Act in respect  of such  Registration
        Statement, and each person, if any, who controls the Company or any such
        person within the meaning of Section 15 of the Securities  Act,  against
        any and all losses,  claims, damages or liabilities (including the costs
        of any reasonable investigation and legal and other expenses incurred in
        connection with, and any amount paid in settlement of, any action,  suit
        or proceeding or any claim  asserted) to which they, or any of them, may
        become  subject  under the  Securities  Act,  the  Exchange Act or other
        federal,  provincial  or state  law or  regulation,  at common  law,  or
        otherwise,  insofar as such losses,  claims,  damages or liabilities (or
        actions  in respect  thereof)  arise out of or are based upon any untrue
        statement or alleged  untrue  statement of a material fact  contained in
        such  Registration  Statement,  or any related  preliminary  prospectus,
        final prospectus or amendment  thereof or supplement  thereto,  or arise
        out of or are based  upon any  omission  or  alleged  omission  to state
        therein a material  fact  required to be stated  therein or necessary to
        make the statements  therein,  in light of the circumstances under


                                      -30-
<PAGE>

        which they were made, not  misleading,  in each case to the extent,  but
        only to the extent,  that such untrue  statement or omission was made in
        such Registration Statement, preliminary prospectus, final prospectus or
        amendment  thereof  or  supplement  thereto  in  reliance  upon,  and in
        conformity with,  information furnished in writing to the Company by the
        Investor  specifically  for use  therein;  provided,  however,  that the
        obligations  of the  Investor  hereunder  shall be  limited to an amount
        equal  to the  net  proceeds  to it from  sales  of  securities  sold as
        contemplated  herein; and provided further,  that this indemnity,  as to
        any  preliminary  prospectus,  shall  not  inure to the  benefit  of the
        Investor  (or any person  controlling  the  Investor)  on account of any
        loss, claim,  damage,  liability or litigation  arising from the sale of
        Registerable  Shares to any person by the  Investor if it failed to send
        or give a copy of any subsequent  prospectus or prospectus supplement to
        such person  within the time  required by the  Securities  Act,  and the
        untrue  statement  or alleged  untrue  statement  or omission or alleged
        omission of a material fact in such preliminary prospectus was corrected
        in the subsequent  prospectus or prospectus  supplement.  This indemnity
        agreement  will be in addition to any  liability  which the Investor may
        otherwise have.

               (c) Any party that proposes to assert the right to be indemnified
        under  this  Section 9 shall,  promptly  after  receipt of notice of the
        commencement  of any action,  suit or  proceeding  against such party in
        respect of which a claim is to be made against an indemnifying  party or
        parties under this Section 9, notify each such indemnifying party of the
        commencement  thereof,  enclosing  a  copy  of  all  papers  served.  No
        indemnification  provided for in Section 9(a) or 9(b) shall be available
        to any party who shall fail to give notice as  provided in this  Section
        9(c),  provided that the failure of any indemnified party to give notice
        as  provided  herein  shall not relieve  the  indemnifying  party of its
        obligations  under  this  Section 9 unless  the  indemnifying  party was
        unaware of the  proceeding  to which such notice  would have related and
        was  materially  prejudiced  by the  failure  to give  such  notice  and
        provided that the omission so to notify such  indemnifying  party of any
        such action,  suit or proceeding shall not relieve it from any liability
        that it may have to any indemnified  party other than under this Section
        9 or Section 10 below.  In case any such action,  suit or  proceeding is
        brought against any indemnified  party and it notifies the  indemnifying
        party of the  commencement  thereof,  such  indemnifying  party  will be
        entitled to participate in, and, to the extent that it may wish, jointly
        with any other  indemnifying  party  similarly  notified,  to assume the
        defense thereof with counsel reasonably satisfactory to such indemnified
        party, and, after notice from the indemnifying party to such indemnified
        party of its election so to assume the defense  thereof and the approval
        by  the   indemnified   party  of  such  counsel  (which  shall  not  be
        unreasonably  withheld),  the indemnifying  party shall not be liable to
        such  indemnified  party  for any  legal or other  expenses,  except  as
        provided  below and except  for the  reasonable  costs of  investigation
        subsequently  incurred by such indemnified  party in connection with the
        defense  thereof.  The indemnified  party shall have the right to employ
        its  counsel in any such  action,  suit or  proceeding  but the fees and
        expenses of such  counsel  shall be at the  expense of such  indemnified
        party unless (i) the employment of counsel by such indemnified party has


                                      -31-
<PAGE>


        been  authorized  in  writing  by the  indemnifying  parties,  (ii)  the
        indemnified  party  shall have  reasonably  concluded  that there may be
        differing or additional  defenses available to it and not to one or more
        of the indemnifying  parties in such action,  suit or proceeding so that
        it would be inappropriate  for counsel to represent both the indemnified
        party  and  the  indemnifying  party  in  view of  actual  or  potential
        conflicts of interest (in which case if such indemnified  party notifies
        the  indemnifying  party in  writing  that it elects to employ  separate
        counsel at the expense of the indemnifying party, the indemnifying party
        shall not have the right to assume the defense of such  action,  suit or
        proceeding  on  behalf  of  such  indemnified   party);   or  (iii)  the
        indemnifying  parties  shall not have  employed  counsel  to assume  the
        defense of such  action  within a  reasonable  time after  notice of the
        commencement  thereof,  in each of which cases the fees and  expenses of
        the  indemnified  party's  counsel  shall  be  at  the  expense  of  the
        indemnifying   parties,   it  being   understood,   however,   that  the
        indemnifying  party shall not, in  connection  with any one such action,
        suit or  proceeding  or separate  but  substantially  similar or related
        actions,  suits or proceedings in the same  jurisdiction  arising out of
        the  same  general  allegations  or  circumstances,  be  liable  for the
        reasonable fees and expenses of more than one separate firm of attorneys
        for the Investor and its  controlling  persons.  An  indemnifying  party
        shall not be liable for any settlement of any action,  suit,  proceeding
        or claim effected without its written consent.

        10.   Contribution.   In  order  to  provide  for  just  and   equitable
contribution  in  circumstances  in which the  indemnification  provided  for in
Section 9 is due in  accordance  with its terms but for any reason is held to be
unavailable or insufficient to hold harmless an indemnified  party,  the Company
on the  one  hand  and  the  Investor  on the  other  hand  shall,  in  lieu  of
indemnifying such indemnified party, contribute to the aggregate losses, claims,
damages  or  liabilities  referred  to in  Section  9  (including  costs  of any
investigation  and legal and other  expenses  reasonably  incurred in connection
therewith,  and any amount paid in settlement of, any action, suit or proceeding
or any claims  asserted),  in such  proportions as is appropriate to reflect the
relative fault of the Company and the Investor in connection with the statements
or omissions  which  resulted in such losses,  claims,  damages,  liabilities or
expenses, as well as any other relevant equitable  considerations.  The relative
fault of the Company and the Investor shall be determined by reference to, among
other things,  whether the untrue or alleged untrue statement of a material fact
or omission related to information  supplied by the Company  (including for this
purpose information supplied by any officer, director,  employee or agent of the
Company) or to written  information  furnished to the Company by or on behalf of
the  Investor  specifically  for  use in  the  preparation  of the  Registration
Statement  or any  amendment  thereof or  supplement  thereto,  and the parties'
relative intent, knowledge,  access to information and opportunity to correct or
prevent such  statement  or omission.  Notwithstanding  the  provisions  of this
Section 10 in no case shall the Investor be liable or responsible for any amount
in  excess  of the  proceeds  received  by the  Investor  from  the  sale of the
Registerable Shares included in the Registration Statement,  provided,  however,
that no person  guilty of  fraudulent  misrepresentation  (within the meaning of
Section 11(f) of the Securities Act) shall be entitled to contribution  from any
person who was not guilty of such fraudulent misrepresentation.  For purposes of
this  Section 10, each person,  if any,


                                      -32-
<PAGE>


who controls the Investor within the meaning of Section 15 of the Securities Act
or Section 20(a) of the Exchange Act shall have the same rights to  contribution
as the Investor,  and each person,  if any, who controls the Company  within the
meaning of the Section 15 of the Securities Act or Section 20(a) of the Exchange
Act, each director of the Company and each officer of the Company who shall have
signed the Registration  Statement shall have the same rights to contribution as
the Company,  subject to the immediately  preceding sentence of this Section 10.
Any party  entitled to  contribution  will,  promptly after receipt of notice of
commencement of any action,  suit or proceeding against such party in respect of
which a claim for  contribution  may be made  against  another  party or parties
under this Section 10, notify such party or parties from whom  contribution  may
be  sought,  and the  omission  so to notify  such  party or  parties  from whom
contribution  may be  sought  shall  relieve  the  party or  parties  from  whom
contribution  may be sought (if such party was unaware of such action,  suit, or
proceeding  and was  materially  prejudiced by such omission) from any liability
under this  Section  10, but not from any other  obligation  it or they may have
hereunder  or other  than under this  Section  10. No party  shall be liable for
contribution with respect to the settlement of any action,  suit,  proceeding or
claim effected without its written  consent.  The obligations of the Investor to
contribute  pursuant  to  this  Section  10 are  several  in  proportion  to its
respective number of Registerable Shares included in the Registration  Statement
and not joint.  Notwithstanding the foregoing, to the extent that the provisions
on  indemnification  and contribution  contained in the  underwriting  agreement
entered into in connection with any underwritten public offering contemplated by
this Agreement are in conflict with the foregoing provisions,  the provisions in
such underwriting agreement shall be controlling.

        11.  Notices.  Any notice  hereunder  shall be in  writing  and shall be
effective  when  delivered  in person  or by  facsimile  transmission,  or seven
business  days after being  mailed by  certified  or  registered  mail,  postage
prepaid,  return receipt  requested,  to the appropriate  party at the following
addresses:

If to the Investor:

               Warburg Pincus Ventures, L.P.
               466 Lexington Avenue
               New York, New York 10017-3147
               Facsimile: 212-878-9351
               Attention:  Mr. Joel Ackerman

with a copy to:

               Willkie Farr & Gallagher
               153 E. 53rd Street
               New York, New York 10022
               Facsimile: 212-821-8111
               Attention:  Steven J. Gartner, Esq.


                                      -33-
<PAGE>

If to the Company:

               HealthCare Capital Corp.
               111 SW Fifth Avenue, Suite 2390
               Portland, Oregon 97204
               Facsimile: 503-225-9309
               Attention:  Mr. Brandon M. Dawson

with a copy to:

               Carter, Ledyard & Milburn
               2 Wall Street
               New York, New York  10005
               Facsimile:  212-732-3232
               Attention:  John K. Whelan, Esq.

        12. Parties.  This Agreement will inure to the benefit of and be binding
upon the Investor, the Company and their respective successors and assigns. This
Agreement  is intended to be, and is for the sole and  exclusive  benefit of the
parties hereto and the other indemnified  parties described in Sections 9 and 10
hereof and their  respective  successors and assigns,  and for the benefit of no
other person, and no other person will have any legal or equitable right, remedy
or claim under, or in respect of this  Agreement.  Except as provided in Section
4(c) and Section 8(n) hereof,  no  purchaser  of any of the  Securities  will be
construed as a successor  or assign of the Investor  entitled to any benefits of
this Agreement, merely by reason of such purchase.

        13.  Termination  and  Survival.  Unless the Closing has occurred  prior
thereto  or  simultaneously  herewith,  this  Agreement  and,  except  as herein
provided,  all the rights of the parties hereto,  shall terminate on January 16,
1998  (unless  such date is  extended  by  mutual  written  consent);  provided,
however,  that this date may be  extended  unilaterally  by the  Company  or the
Investor to March 31, 1998 if all required  regulatory  approvals  have not been
obtained by January 16, 1998.  Notwithstanding  the foregoing,  Section 7 hereof
shall   survive   the   termination   of   this   Agreement.   All   warranties,
representations, and covenants made by the Investor and the Company herein or in
any  certificate  or other  instrument  delivered by the Investor or the Company
under this Agreement shall be considered to have been relied upon by the Company
or the  Investor,  as the case may be, and shall  survive all  deliveries to the
Investor  of the  Securities,  or payment to the  Company  for such  Securities,
regardless of any investigation made by the Company or the Investor, as the case
may be, or on the Company's or the Investor's behalf. All statements in any such
certificate or other instrument shall constitute  warranties and representations
by the Company or the Investor, as the case may be, hereunder.

        14. Amendment and Modification.  Neither this Agreement, nor any term or
provision  hereof,  may be changed,  waived,  discharged,  amended,  modified or
terminated in any manner other than by an  instrument in writing  signed by each
of the parties hereto.

                                      -34-
<PAGE>

        15.  Further  Assurances.  Each party to this Agreement will perform any
and all acts and execute any and all  documents as may be  necessary  and proper
under the  circumstances  in order to accomplish the intent and purposes of this
Agreement  and to carry  out its  provisions.  Each  such  party  shall  use its
reasonable  efforts  to  fulfill or obtain  the  fulfillment  of the  respective
conditions to the Closing as promptly as practicable.

        16.  Waiver of Breach.  The  failure of any party  hereto to insist upon
strict  performance of any of the covenants and agreements herein contained,  or
to exercise any option or right herein  conferred in any one or more  instances,
will not be  construed  to be a waiver or  relinquishment  of any such option or
right, or of any other covenants or agreements,  and the same will be and remain
in full force and effect.

        17. Entire Agreement.  This Agreement  contains the entire agreement and
understanding  of the parties with respect to the entire  subject matter hereof,
and there are no representations,  inducements,  promises or agreements, oral or
otherwise,  not embodied herein.  Any and all prior  discussions,  negotiations,
commitments and understandings  relating thereto,  including without limitation,
that  certain Term Sheet dated  October 22, 1997 and accepted  October 31, 1997,
between  the Company  and the  Investor,  are  superseded  hereby.  There are no
conditions precedent to the effectiveness of this Agreement other than as stated
herein,  and there are no related  collateral  agreements  existing  between the
parties that are not referred to herein.

        18. Severability.  In the event that any part or parts of this Agreement
shall be held illegal or  unenforceable by any court or  administrative  body of
competent  jurisdiction,  such  determination  shall not  affect  the  remaining
provisions of this Agreement which shall remain in full force and effect.

        19.  Limitation on Enforcement of Remedies.  Without in any way limiting
its rights  against  the  Investor or its general  partner,  the Company  hereby
agrees that it will not assert against the limited  partners of the Investor any
claim it may have  under  this  Agreement  by reason of any  failure  or alleged
failure by the Investor to meet its obligations hereunder.

        20.  Counterparts.  This Agreement may be executed in  counterparts  and
each of such counterparts will for all purposes be deemed to be an original, and
such counterparts will together constitute one and the same instrument.

        21. Law. This  Agreement  will be deemed to have been made and delivered
in  New  York  City  and  will  be  governed  as  to  validity,  interpretation,
construction, effect and in all other respects by the internal laws of the State
of New York.  The Company (a) agrees that any legal suit,  action or  proceeding
arising out of or relating to this  Agreement  may be  instituted in the Supreme
Court of the State of New York,  County of New  York,  or in the  United  States
District  Court for the Southern  District of New York, (b) waives any objection
which the  Company  may have now or  hereafter  to the  venue of any such  suit,
action or proceeding,  and (c) irrevocably  consents to the  jurisdiction of the
Supreme  Court of the State of New York,  County  of New


                                      -35-
<PAGE>


York, and the United States District Court for the Southern District of New York
in any such suit, action or proceeding. The Company further agrees to accept and
acknowledge service of any and all process which may be served in any such suit,
action or  proceeding in such courts and agrees that service of process upon the
Company  mailed by  certified  mail to the  Company's  address will be deemed in
every respect effective  service of process upon the Company,  in any such suit,
action or proceeding.


                     [This space intentionally left blank.]


                                      -36-
<PAGE>


        IN WITNESS  WHEREOF,  the Company and the Investor have each caused this
Agreement  to be executed by its duly  authorized  officer,  each as of the date
first above written.


                         HEALTHCARE CAPITAL CORP.



                         By:  /s/ Brandon M. Dawson
                              Name:  Brandon M. Dawson
                              Title: President and Chief Executive Officer



                               WARBURG PINCUS VENTURES, L.P.
                               By:  Warburg, Pincus & Co.,
                                    General Partner



                               By:  /s/ Patrick T. Hackett
                                    Print Name:  Patrick T. Hackett
                                    Title:  Managing Director



                                      -37-
<PAGE>


                                                                       EXHIBIT A


                            HEALTHCARE CAPITAL CORP.

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

                                WARRANT AGREEMENT

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

                  WARRANTS TO PURCHASE 10,000,000 COMMON SHARES

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


        THIS WARRANT AGREEMENT (this  "Agreement")  dated as of January --, 1998
is made and entered into by and between  HealthCare Capital Corp., a corporation
organized under the laws of Alberta, Canada (the "Company"),  and Warburg Pincus
Ventures, L.P., a Delaware limited partnership (the "Warrantholder").

        Subject to the terms and conditions  hereof, the Company agrees to issue
to the  Warrantholder,  pursuant to a Securities  Purchase Agreement dated as of
November  21,  1997,  by and  between the  Company  and the  Warrantholder  (the
"Securities Purchase  Agreement"),  warrants,  as hereinafter  described and the
form of which is attached hereto as Exhibit 1 (the  "Warrants"),  to purchase up
to an aggregate of  10,000,000  common  shares  without par value of the Company
(the  "Common  Shares"),  at a Warrant  Price of U.S.  $2.40 per  Common  Share,
subject to adjustment  pursuant to Section 6 hereof. As used herein (i) the term
"Shares" shall mean,  unless the context  otherwise  requires,  collectively the
Common Shares  issuable  upon  exercise of the Warrants  together with any other
securities or other property  issuable upon such exercise as provided in Section
6 of this Agreement; (ii) the term "Warrants" shall include any and all warrants
outstanding  pursuant  to  this  Agreement,   including  those  evidenced  by  a
certificate  or  certificates  issued upon  division,  exchange or  substitution
pursuant to this  Agreement;  and (iii) the term "Warrant  Price" shall mean the
price per Share at which Shares shall at any time be  purchasable  upon exercise
of the Warrants.  Terms which are  capitalized but not defined herein shall have
the same meanings as in the Securities  Purchase  Agreement.  Any amounts herein
referencing  share prices or numbers of shares  shall be subject to  appropriate
adjustments in the event of any stock splits, consolidations or the like.

        For the purpose of defining the terms and provisions of the Warrants and
the  respective  rights  and  obligations   thereunder,   the  Company  and  the
Warrantholder, for value received, hereby agree as follows:


                                      A-1
<PAGE>

        Section 1.     Restrictions on Transfer and Form of Warrants.

        1.1.  Registration.   Certificates  evidencing  the  Warrants  shall  be
numbered and shall be  registered  on the books of the Company  when issued,  in
accordance with Alberta corporate practice.

        1.2. Restriction on Transfer of the Warrants.  The Warrants shall not be
transferable  and  may  not  be  sold,   assigned,   hypothecated  or  otherwise
transferred  by the  Warrantholder  without the express  written  consent of the
Company, such consent not to be unreasonably  withheld. Any transferee permitted
under this Section 1.2 shall acquire title to such  transferred  Warrants and to
all rights represented thereby.

        1.3. Form of Warrants.  The form of certificate  evidencing the Warrants
shall be substantially as set forth in Exhibit 1 hereto. Certificates evidencing
the Warrants  shall be executed on behalf of the Company by its  President or by
any Vice  President,  shall be attested  to by its  Secretary  or any  Assistant
Secretary, and shall be dated as of the date of execution thereof.

        1.4. Legends on Warrants and Common Shares. The Warrants, and the Shares
issuable  upon  the  exercise  thereof,  have  not  been  registered  under  the
Securities Act of 1933, as amended (the "Securities  Act"). Each certificate for
the Warrants shall bear the following legend:

               "THE WARRANTS  REPRESENTED  BY THIS  CERTIFICATE,  AND THE COMMON
               SHARES  ISSUABLE  UPON EXERCISE OF SUCH  WARRANTS,  HAVE NOT BEEN
               REGISTERED UNDER THE UNITED STATES  SECURITIES ACT OF 1933 OR THE
               SECURITIES LAWS OF ANY STATE OF THE UNITED STATES OR ANY PROVINCE
               OF  CANADA.  SUCH  WARRANTS  MAY NOT BE SOLD,  OFFERED  FOR SALE,
               ASSIGNED,   EXCHANGED,   PLEDGED  OR  HYPOTHECATED  OR  OTHERWISE
               TRANSFERRED,  IN ANY MANNER,  AND SUCH  COMMON  SHARES MAY NOT BE
               OFFERED FOR SALE, SOLD, PLEDGED OR HYPOTHECATED OR TRANSFERRED IN
               THE  ABSENCE  OF SUCH  REGISTRATION  OR AN  OPINION  OF  COUNSEL,
               REASONABLY  SATISFACTORY  TO THE COMPANY,  THAT AN EXEMPTION FROM
               SUCH REGISTRATION IS AVAILABLE.  THE WARRANTS REPRESENTED BY THIS
               CERTIFICATE  MAY NOT BE TRADED IN CANADA  EXCEPT AS  PERMITTED BY
               RELEVANT CANADIAN SECURITIES LAWS."

                                      A-2
<PAGE>

Each certificate for the Shares shall bear the following legend:

               "THE COMMON SHARES  REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
               REGISTERED UNDER THE UNITED STATES  SECURITIES ACT OF 1933 OR THE
               SECURITIES LAWS OF ANY STATE OF THE UNITED STATES OR ANY PROVINCE
               OF CANADA AND MAY NOT BE SOLD,  ASSIGNED,  EXCHANGED OR OTHERWISE
               TRANSFERRED, IN THE ABSENCE OF SUCH REGISTRATION OR AN OPINION OF
               COUNSEL,   REASONABLY   SATISFACTORY  TO  THE  COMPANY,  THAT  AN
               EXEMPTION FROM SUCH  REGISTRATION  IS AVAILABLE THIS  CERTIFICATE
               MAY NOT CONSTITUTE  `GOOD  DELIVERY' IN  SATISFACTION  OF A TRADE
               MADE ON A STOCK  EXCHANGE  IN  CANADA.  THIS  CERTIFICATE  IS NOT
               TRANSFERABLE  IN  CANADA  UNTIL  [THE  DATE SIX  MONTHS  FROM THE
               CLOSING DATE] EXCEPT PURSUANT TO AN EXEMPTION FROM THE PROSPECTUS
               REQUIREMENTS CONTAINED IN THE APPLICABLE SECURITIES LEGISLATION."

        Any certificate  issued at any time in exchange or substitution  for any
certificate bearing such legend (except a new certificate issued upon completion
of  a  public  distribution  pursuant  to a  registration  statement  under  the
Securities Act of the Common Shares represented  thereby) shall also bear a like
legend unless, in the opinion of counsel reasonably satisfactory to the Company,
the  securities   represented   thereby  need  no  longer  be  subject  to  such
restrictions.

Section 2.     Term of Warrants; Exercise of Warrants.

        (a) Subject to the terms of this Agreement, the Warrantholder shall have
the right,  at any time and from time to time  during the period  commencing  at
9:00 a.m.,  Pacific Time,  on January --, 1998,  (the  "Commencement  Date") and
ending at 5:00 p.m.,  Pacific Time, on the third anniversary of the Commencement
Date (the  "Termination  Date") to purchase from the Company up to the number of
fully paid and  nonassessable  Shares which the Warrantholder may at the time be
entitled to purchase  pursuant to this Agreement,  upon surrender to the Company
at its  principal  office of the  certificates  evidencing  the  Warrants  to be
exercised,  with the purchase  form, in the form  attached  hereto as Exhibit 2,
duly  completed  and signed,  and upon  payment to the Company of an amount (the
"Exercise  Payment")  equal to the  Warrant  Price  multiplied  by the number of
Shares being purchased pursuant to such exercise,  payable in cash, by certified
or  official  bank  check,  or by  wire  transfer.  The  Company  shall  use its
reasonable best efforts prior to the  Termination  Date to obtain any applicable
regulatory  approvals of those regulatory  agencies having jurisdiction over the
Company  in order to extend  the  Termination  Date


                                      A-3
<PAGE>

for a further  period  of two  years,  in which  event  the  Company's  right of
purchase  under this Section 2(a) shall end at 5:00 p.m.,  Pacific  Time, on the
fifth anniversary of the Commencement Date.

        (b) At any time subsequent to the first  anniversary of the Commencement
Date, in lieu of exercising the Warrants as provided in Section 2(a) above,  and
subject  to  all  applicable  law  and  all  applicable   regulatory  approvals,
limitations and restrictions,  the  Warrantholder may elect to receive,  without
any cash payment, a number of Shares equal to the value (as determined below) of
any or all of the Warrants held of record by the  Warrantholder,  upon surrender
to the  Company at its  principal  office of the  certificates  evidencing  such
Warrants,  with the attached cashless exercise form attached hereto as Exhibit 3
duly  completed  and  signed,  in which  event the  Company  shall  issue to the
Warrantholder a number of Shares computed using the following formula:

               X    =         Y(A-B)
                              ------
                                A

where

               X    =    the number of Common  Shares to be issued  pursuant  to
                         this Section 2(b).

               Y    =    the number of Common  Shares  issuable upon exercise of
                         the surrendered Warrants.

               A    =    the average of the Market  Prices of the Common  Shares
                         for the sixty (60) calendar days immediately  preceding
                         the date upon  which the  certificates  evidencing  the
                         surrendered Warrants are received by the Company at its
                         principal office.

               B    =    the Warrant Price on such date.

        For all purposes of this  Agreement,  the term "Market  Price" as of any
specified  date shall mean:  (i) if the Common Shares are listed or admitted for
trading on one or more United States national  securities  exchanges,  the daily
closing  price for the Common  Shares on the  principal  exchange  in the United
States on which the Common Shares are listed;  (ii) if the Common Shares are not
listed  or  admitted  for  trading  on any  United  States  national  securities
exchange,  the daily closing price for the Common Shares on the Nasdaq  National
or Nasdaq Small-Cap Market ("Nasdaq"); (iii) if the Common Shares are not listed
or admitted for trading on a United States  national  securities  exchange or on
Nasdaq,  the daily closing  price of the Common  Shares on the  principal  stock
exchange in Canada on which the Common  Shares are listed  (expressed  in United
States  dollars  based  upon the noon  buying  rate in New York  City for  cable
transfers in Canadian  dollars as certified for customs  purposes by the Federal
Reserve Bank of New York);  (iv) if the


                                      A-4
<PAGE>


Common  Shares are not  listed or  admitted  to  trading  on any  United  States
national or Canadian national  securities  exchange or on Nasdaq, the average of
the reported bid and asked prices on the trading day preceding  such date in the
over-the-counter market as furnished by the National Quotation Bureau, Inc., or,
if such firm is not then engaged in the business of  reporting  such prices,  as
furnished by any member of the National Association of Securities Dealers,  Inc.
selected by the Company;  or (v) if the Common  Shares are not publicly  traded,
the Market Price for such day shall be the fair market value thereof  determined
jointly by the Company and the Warrantholder;  provided,  however,  that if such
parties are unable to reach  agreement  within a reasonable  period of time, the
Market  Price shall be  determined  in good faith by an  independent  investment
banking firm selected jointly by the Company and the  Warrantholder  or, if that
selection  cannot  be made  within  an  additional  15 days,  by an  independent
investment  banking firm  selected by the American  Arbitration  Association  in
accordance with its rules.

        If the  Warrantholder  elects to exercise the Warrants  pursuant to this
Section  2(b),  the  Warrantholder  shall  simultaneously  convert  all Series A
Convertible  Preferred  Shares of the Company (the  "Convertible  Shares")  then
owned by the Warrantholder into Common Shares.

        In the event that the  Warrantholder  elects to  exercise  the  Warrants
pursuant  to this  Section  2(b),  and the  average  Market  Price of the Common
Shares,  as defined above,  for the 60 calendar days  immediately  preceding the
date on which the certificates  evidencing the surrendered Warrants are received
by the Company at its principal  office,  is greater than U.S.  $3.20,  then the
right to a cashless  exercise  of  Warrants  shall be limited to such  number of
Warrants as would result in the issuance of 2,500,000  Shares and any  remaining
Warrants to be exercised by the Warrantholder  shall be exercised,  at such time
or times  elected by the  Warrantholder,  in accordance  with the  provisions of
Section  2(a).  Such per  share  amount  of U.S.  $3.20  shall be  appropriately
adjusted for any stock splits, consolidations or the like.

               (c) The Company may, at any time,  elect to force the exercise of
the  Warrants  by the  Warrantholder  subject  to the  terms  of this  Agreement
provided that the Company shall have  satisfied all of the following  conditions
prior to the date of such election by the Company:

                       (i) the  Common  Shares  are listed on the New York Stock
        Exchange, the American Stock Exchange or the Nasdaq National Market;

                       (ii) the  Common  Shares are traded on the New York Stock
        Exchange, the American Stock Exchange or the Nasdaq National Market at a
        Market Price  greater than U.S.  $2.40 per share for the 10  consecutive
        trading days immediately preceding the date of such election; and

                       (iii) The Company's net income  (excluding profit or loss
        on disposal of a significant  part of the  Company's  assets or separate
        segment thereof, gains on restructuring payables, gains or losses on the
        extinguishment of debt, expropriations of property, gains or losses that
        are the direct result of a major casualty,  or one-time losses


                                      A-5
<PAGE>

        resulting from prohibitions under a newly-enacted law or regulation) for
        the three  consecutive  fiscal quarters ended  immediately  prior to the
        date of such  election,  as reported in or derived from its quarterly or
        annual reports filed with the Securities and Exchange Commission, before
        income taxes,  dividends on the Convertible  Shares and  amortization of
        goodwill and covenants not to compete for such quarterly periods,  shall
        have  averaged at least U.S.  $0.07 per fully  diluted  Common Share per
        fiscal quarter, provided, however, that in making such calculation,  the
        Common Shares  issuable upon exercise of the Warrants  shall be excluded
        but Common Shares issuable upon the conversion of the Convertible Shares
        shall not.

The foregoing  conditions (i), (ii) and (iii) shall  hereinafter be collectively
referred to as the "Triggering  Conditions." All references to per share amounts
or prices  with  respect to the  Triggering  Conditions  shall be  appropriately
adjusted for any stock splits, consolidations or the like.

        The  Company  shall  give  the  Warrantholder  written  notice  that the
Triggering  Conditions have been satisfied and that the Company intends to force
the exercise of the Warrants.  In this event,  the Termination Date shall be the
date ten (10) business days after such notice shall be effectively  delivered to
the Warrantholder as provided in Section 10 of this Agreement.

        In the event of a forced  exercise of Warrants  pursuant to this Section
2(c), in lieu of exercising the Warrants as provided in Section 2(a) above,  and
subject  to  all  applicable  law  and  all  applicable   regulatory  approvals,
limitations and restrictions,  the  Warrantholder may elect to receive,  without
any cash payment, a number of Shares equal to the value (as determined below) of
any or all of the Warrants held of record by the  Warrantholder,  upon surrender
to the  Company at its  principal  office of the  certificates  evidencing  such
Warrants,  with the attached  cashless  exercise form thereof duly completed and
signed,  in which event the Company shall issue to the holder a number of Shares
computed using the formula set forth in Section 2(b) except the term "A" in such
formula, the Market Price of the Common Shares, shall be calculated based on the
ten (10) trading days  immediately  preceding the date on which the certificates
evidencing the surrendered Warrants are received by the Company at its principal
offices.

        In the event that the  Warrantholder  elects to  exercise  the  Warrants
without any cash payment  following a forced  exercise  pursuant to this Section
2(c), and the average Market Price of the Common Shares,  as defined above,  for
the 60 calendar days  immediately  preceding the date on which the  certificates
evidencing the surrendered Warrants are received by the Company at its principal
office,  is greater than U.S.  $3.20,  then the right to a cashless  exercise of
Warrants  shall be limited to such  number of  Warrants  as would  result in the
issuance of 2,500,000  Shares and any remaining  Warrants to be exercised by the
Warrantholder  shall  be  exercised,  at  such  time  or  times  elected  by the
Warrantholder, in accordance with the provisions of Section 2(a). Such per share
amount of U.S.  $3.20  shall be  appropriately  adjusted  for any stock  splits,
consolidations or the like.


                                      A-6
<PAGE>

        (d) Upon the  surrender  of  Warrant  certificates  and  payment  of the
Exercise  Payment  (in cash,  except in the event of a cashless  exercise),  the
Company,  at its  expense,  shall  issue  and  cause  to be  delivered  with all
reasonable  dispatch,  and in any event within ten (10) days thereafter,  to the
Warrantholder  a certificate  or  certificates  for the number of full Shares so
acquired upon the exercise of the Warrant,  together with cash in respect of any
fractional  Shares  otherwise  issuable  upon  such  surrender,   determined  in
accordance  with Section 7 hereof.  Such  certificate or  certificates  shall be
deemed to have been issued, and the Warrantholder shall be deemed to have become
a holder of record of such  Shares,  as of the date of surrender of the Warrants
being  exercised and (in the case of exercise  pursuant to Section 2(a)) payment
of the Exercise  Payment  notwithstanding  that the  certificate or certificates
representing  such securities shall not actually have been delivered or that the
stock transfer books of the Company shall then be closed.  The Warrants shall be
exercisable at the election of the Warrantholder  either in full or from time to
time in part  and,  in the  event  that a  certificate  evidencing  Warrants  is
exercised  in respect of fewer than all of the Shares  specified  therein at any
time prior to the Termination  Date, a new certificate  evidencing the remaining
portion of the Warrants shall be issued by the Company.

        Section 3. Payment of Taxes. The Company will pay all transfer and stamp
taxes and fees, if any,  attributable to the initial issuance of the Warrants or
the issuance of Shares upon exercise of the Warrants.

        Section 4.  Mutilated or Missing  Warrants.  In case the  certificate or
certificates  evidencing  any  Warrants  shall be  mutilated,  lost,  stolen  or
destroyed,  the Company  shall,  at the request of the  affected  Warrantholder,
issue and deliver in exchange and substitution for and upon  cancellation of the
mutilated  certificate or  certificates,  or in lieu of and substitution for the
certificate or certificates lost, stolen or destroyed, a new Warrant certificate
or certificates of like tenor and  representing an equivalent right or interest,
but only upon receipt of evidence reasonably  satisfactory to the Company of the
loss, theft, destruction or mutilation of such Warrant and, if requested, at the
cost  and  expense  of  the  Warrantholder  (in  the  case  of  loss,  theft  or
destruction),  an  unsecured  bond of  indemnity  in form and amount  reasonably
satisfactory to the Company.  Such  substitute  Warrant  certificate  shall also
comply with such other reasonable regulations as the Company may prescribe.

        Section 5.  Reservation of Common Shares.  There has been reserved,  and
the  Company  shall at all times  keep  reserved  and  available  so long as any
Warrants remain outstanding, out of its authorized share capital, such number of
Shares as shall be subject to purchase  under all  outstanding  Warrants.  Every
transfer  agent for the  Common  Shares  and  other  securities  of the  Company
issuable  upon the  exercise  of Warrants  will be  irrevocably  authorized  and
directed at all times to reserve  such number of  authorized  Common  Shares and
other securities as shall be requisite for such purposes.  The Company will keep
a copy of this  Agreement  on file with  every  transfer  agent  for the  Common
Shares.  The Company will supply every such  transfer  agent with duly  executed
stock and other certificates,  as appropriate, for such


                                      A-7
<PAGE>


purpose  and will  provide or  otherwise  make  available  any cash which may be
payable as provided in Section 7 hereof.

        Section 6.  Adjustment of Number and Kind of Securities.  The number and
kind of securities purchasable upon the exercise of the Warrants and the Warrant
Price shall be subject to  adjustment  from time to time upon the  happening  of
certain events, as follows:

        Section 6.1. Anti-Dilution Provisions And Other Adjustments. In order to
prevent  dilution of the rights  granted  hereunder,  the Warrant Price shall be
subject to adjustment  from time to time in accordance with this Section 6. Upon
each   adjustment  of  the  Warrant  Price  pursuant  to  this  Section  6,  the
Warrantholder  shall  thereafter  be entitled to acquire upon  exercise,  at the
Warrant Price resulting from such adjustment, the number of Shares obtainable by
multiplying the Warrant Price in effect  immediately prior to such adjustment by
the  number  of  Shares  acquirable  immediately  prior to such  adjustment  and
dividing  the  product   thereof  by  the  Warrant  Price  resulting  from  such
adjustment.

               (a)  Adjustment  for Issue or Sale of Common  Shares at Less than
Specified  Prices.  Except as  provided  in  Sections  6.3 or 6.5 below,  if and
whenever  on or after the date of  issuance  hereof the  Company  shall issue or
sell, or shall in accordance with subparagraphs  6.1(a)(1) to (8), inclusive, be
deemed to have issued or sold (such issuance or sale,  whether actual or deemed,
a "Triggering Transaction") any Common Shares for a consideration per share less
than

               (I) (if the  Common  Shares  are not traded on the New York Stock
        Exchange,  the American  Stock Exchange or the Nasdaq  National  Market)
        U.S.  $1.35 then  forthwith  upon such issue or sale the  Warrant  Price
        shall,  subject to subparagraphs  (1) to (8) of this Section 6.1(a),  be
        reduced to the Warrant Price (calculated to the nearest tenth of a cent)
        determined  by  dividing:  (i) an  amount  equal  to the  sum of (x) the
        product  derived  by  multiplying  the  Number of Common  Shares  Deemed
        Outstanding  immediately  prior to such  Triggering  Transaction  by the
        Warrant  Price  then in  effect,  plus  (y) the  consideration,  if any,
        received  by  the  Company   upon   consummation   of  such   Triggering
        Transaction,  by (ii) an  amount  equal to the sum of (x) the  Number of
        Common Shares Deemed  Outstanding  immediately  prior to such Triggering
        Transaction  plus (y) the  number of shares of Common  Stock  issued (or
        deemed to be issued in accordance with  subparagraphs  6.1(a)(1) to (8))
        in connection with the Triggering Transaction; or

               (II) (if the  Common  Shares  are  traded  on the New York  Stock
        Exchange, the American Stock Exchange or the Nasdaq National Market) the
        average Market Price for the ten trading days immediately preceding such
        issuance or sale, then forthwith upon such Triggering  Transaction,  the
        Warrant Price shall, subject to subparagraphs (1) to (8) of this Section
        6.1(a), be reduced to the Warrant Price (calculated to the nearest tenth
        of a cent)  determined  by  multiplying  the  Warrant  Price  in  effect
        immediately  prior  to the  time of  such  Triggering  Transaction  by a
        fraction,  the  numerator of which shall be the


                                      A-8
<PAGE>


        sum of (x) the Number of Common  Shares Deemed  Outstanding  immediately
        prior to such Triggering Transaction and (y) the number of Common Shares
        which the  aggregate  consideration  received by the  Company  upon such
        Triggering  Transaction  would  purchase at the average Market Price for
        the ten trading days immediately preceding such Triggering  Transaction,
        and the denominator of which shall be the Number of Common Shares Deemed
        Outstanding immediately after such Triggering Transaction.

               For purposes of this Section 6, the term "Number of Common Shares
Deemed  Outstanding"  at any given  time shall mean the sum of (i) the number of
Common  Shares  outstanding  at such time,  and (ii) the number of Common Shares
deemed to be outstanding under  subparagraphs  6.1(a)(1) to (8),  inclusive,  at
such time.

               For purposes of determining the adjusted Warrant Price under this
Section  6.1(a),  the  following  subsections  (1) to (8),  inclusive,  shall be
applicable:

                       (1) In case the  Company  at any time shall in any manner
               grant (whether  directly or by assumption in an  amalgamation  or
               otherwise)  any rights to subscribe  for or to  purchase,  or any
               options for the purchase of,  Common Shares or any stock or other
               securities  convertible  into or  exchangeable  for Common Shares
               (such rights or options  being herein  called  "Options" and such
               convertible  or  exchangeable  stock or  securities  being herein
               called "Convertible Securities"),  whether or not such Options or
               the right to convert or exchange any such Convertible  Securities
               are  immediately  exercisable,  and the price per share for which
               the Common  Shares are  issuable  upon  exercise,  conversion  or
               exchange  (determined  by dividing (x) the total amount,  if any,
               received or  receivable by the Company as  consideration  for the
               granting of such Options,  plus the minimum  aggregate  amount of
               additional consideration payable to the Company upon the exercise
               of all such  Options,  plus,  in the case of such  Options  which
               relate to Convertible Securities, the minimum aggregate amount of
               additional consideration,  if any, payable upon the issue or sale
               of  such  Convertible  Securities  and  upon  the  conversion  or
               exchange  thereof,  by (y) the  total  maximum  number  of Common
               Shares  issuable  upon  the  exercise  of  such  Options  or  the
               conversion or exchange of such Convertible  Securities)  shall be
               less than the average  Market Price in effect for the ten trading
               days immediately prior to the time of the granting of such Option
               (if the Common Shares are traded on The New York Stock  Exchange,
               The American  Stock  Exchange or The National  Nasdaq  Market) or
               U.S.  $1.35 (if the Common  Shares are not traded on The New York
               Stock  Exchange,  The  American  Stock  Exchange,  or the  Nasdaq
               National  Market) then the total maximum  amount of Common Shares
               issuable  upon the exercise of such  Options,  or, in the case of
               Options  for  Convertible  Securities,  upon  the  conversion  or
               exchange of such Convertible Securities, shall (as of the date of
               granting of such Options) be deemed to be outstanding and to have
               been issued and sold by the Company for such price per share.  No
               adjustment  of the  Warrant  Price  shall be


                                      A-9
<PAGE>

               made  upon  the  actual  issue  of  such  Common  Shares  or such
               Convertible Securities upon the exercise of such Options,  except
               as otherwise provided in subparagraph (3) below.

                       (2) In case the  Company  at any time shall in any manner
               issue (whether  directly or by assumption in an  amalgamation  or
               otherwise) or sell any Convertible Securities, whether or not the
               rights  to  exchange  or  convert   thereunder  are   immediately
               exercisable,  and the price per share for which Common Shares are
               issuable upon such conversion or exchange (determined by dividing
               (x) the total  amount  received or  receivable  by the Company as
               consideration   for  the  issue  or  sale  of  such   Convertible
               Securities,  plus the  minimum  aggregate  amount  of  additional
               consideration, if any, payable to the Company upon the conversion
               or exchange  thereof,  by (y) the total maximum  number of Common
               Shares  issuable  upon the  conversion  or  exchange  of all such
               Convertible  Securities)  shall be less than the  average  Market
               Price in effect for the ten trading days immediately prior to the
               time of such  issue or sale (if the  Common  Shares are traded on
               The New York Stock Exchange,  The American Stock Exchange, or The
               Nasdaq  National  Market) or U.S. $1.35 (if the Common Shares are
               not traded on The New York Stock  Exchange,  The  American  Stock
               Exchange,  or The Nasdaq National Market), then the total maximum
               number of Common Shares  issuable upon  conversion or exchange of
               all  such  Convertible  Securities  shall  (as of the date of the
               issue or sale of such  Convertible  Securities)  be  deemed to be
               outstanding  and to have been  issued and sold by the Company for
               such price per share. No adjustment of the Warrant Price shall be
               made upon the actual issue of such Common Shares upon exercise of
               the  rights  to  exchange  or  convert  under  such   Convertible
               Securities,  except as  otherwise  provided in  subparagraph  (3)
               below.

                       (3) If the  purchase  price  provided  for in any Options
               referred to in subparagraph (1), the additional consideration, if
               any,  payable upon the conversion or exchange of any  Convertible
               Securities  referred to in subparagraphs  (1) or (2), or the rate
               at which any Convertible  Securities  referred to in subparagraph
               (1) or (2) are convertible into or exchangeable for Common Shares
               shall  change  at any time  (other  than  under or by  reason  of
               provisions  designed to protect against  dilution of the type set
               forth in Section  6.1(a) or (b)),  the Warrant Price in effect at
               the time of such change  shall  forthwith  be  readjusted  to the
               Warrant  Price  which  would have been in effect at such time had
               such Options or Convertible Securities still outstanding provided
               for such changed  purchase  price,  additional  consideration  or
               conversion  rate,  as the  case  may be,  at the  time  initially
               granted,  issued or sold. If the purchase  price  provided for in
               any Option referred to in  subparagraph  (1) or the rate at which
               any Convertible  Securities  referred to in subparagraphs  (1) or
               (2) are convertible into or exchangeable for Common Shares, shall
               be  reduced  at any time  under or by reason of  provisions  with
               respect  thereto  designed to protect against  dilution,  then in
               case of the  delivery of Common


                                      A-10
<PAGE>


               Shares upon the exercise of any such Option or upon conversion or
               exchange of any such Convertible Security, the Warrant Price then
               in  effect   hereunder   shall  forthwith  be  adjusted  to  such
               respective  amount as would have been obtained had such Option or
               Convertible  Security  never been issued as to such Common Shares
               and had  adjustments  been made upon the  issuance  of the Common
               Shares  delivered as  aforesaid,  but only if as a result of such
               adjustment  the Warrant Price then in effect  hereunder is hereby
               reduced.

                       (4) On the expiration of any Option or the termination of
               any right to convert or exchange any Convertible Securities,  the
               Warrant  Price  then  in  effect  hereunder  shall  forthwith  be
               increased to the Warrant Price which would have been in effect at
               the time of such  expiration  or  termination  had such Option or
               Convertible  Securities,  to the extent  outstanding  immediately
               prior to such expiration or termination, never been issued.

                       (5) In case any  Options  shall be issued  in  connection
               with  the  issue  or sale of  other  securities  of the  Company,
               together comprising one integral transaction in which no specific
               consideration  is  allocated  to  such  Options  by  the  parties
               thereto, such Options shall be deemed to have been issued without
               consideration.

                       (6) In case any Common  Shares,  Options  or  Convertible
               Securities  shall be issued or sold or deemed to have been issued
               or sold for cash, the  consideration  received  therefor shall be
               deemed to be the amount received by the Company therefor. In case
               any Common  Shares,  Options or Convertible  Securities  shall be
               issued or sold for a consideration other than cash, the amount of
               the  consideration  other than cash received by the Company shall
               be the fair value of such  consideration  as  determined  in good
               faith  by the  Board of  Directors  of the  Company.  In case any
               Common Shares,  Options or Convertible Securities shall be issued
               in connection  with any  amalgamation  in which the Company is an
               amalgamating  corporation,  the amount of consideration  therefor
               shall be deemed to be the fair  value of such  portion of the net
               assets and business of the other  corporation which is a party to
               the amalgamation as shall be attributed by the Board of Directors
               of the  Company in good faith to such Common  Shares,  Options or
               Convertible Securities, as the case may be.

                       (7) In case the Company  shall declare a dividend or make
               any other  distribution  upon the stock of the Company payable in
               Options or Convertible Securities,  then in such case any Options
               or  Convertible  Securities,  as the  case  may be,  issuable  in
               payment of such dividend or distribution  shall be deemed to have
               been issued or sold without consideration.


                                      A-11
<PAGE>

                       (8) For  purposes  of this  Section  6.1(a),  in case the
               Company  shall take a record of the holders of its Common  Shares
               for the  purpose of  entitling  them (x) to receive a dividend or
               other  distribution  payable  in  Common  Shares,  Options  or in
               Convertible  Securities,  or (y)  to  subscribe  for or  purchase
               Common  Shares,  Options  or  Convertible  Securities,  then such
               record  date  shall be deemed to be the date of the issue or sale
               of the Common  Shares deemed to have been issued or sold upon the
               declaration  of  such  dividend  or  the  making  of  such  other
               distribution  or the  date  of the  granting  of  such  right  or
               subscription or purchase, as the case may be.

               (b) In case the Company shall (i) pay a dividend in Common Shares
        or  make  a  distribution   in  Common  Shares  or  (ii)  subdivide  its
        outstanding Common Shares, the Warrant Price in effect immediately prior
        to such subdivision or dividend shall be proportionately  reduced by the
        same ratio as the dividend or subdivision.  In case the Company shall at
        any time combine its  outstanding  Common  Shares,  the Warrant Price in
        effect  immediately prior to such combination  shall be  proportionately
        increased  by the same ratio as the  combination.  Any  adjustment  made
        pursuant to this subsection 6.1(b) shall become effective immediately on
        the effective date of such event retroactive to the record date, if any,
        for such event.

               (c) Whenever  the number of Common  Shares  purchasable  upon the
        exercise of Warrants is adjusted as herein  provided,  the Company shall
        cause to be  promptly  delivered  to the  Warrantholder  notice  of such
        adjustment  and a  certificate  of the chief  financial  officer  of the
        Company setting forth the number of Common Shares  purchasable  upon the
        exercise of the Warrants after such  adjustment,  the Warrant Price that
        will be effective after such adjustment,  a brief statement of the facts
        requiring such  adjustment and the  computation by which such adjustment
        was made.  If such notice  relates to an  adjustment  resulting  from an
        event referred to in Section 8, such notice shall be included as part of
        the notice  required to be delivered and published  under the provisions
        of Section 8 hereof.

        6.2. No Adjustment for Dividends.  Except as provided in this Section 6,
no adjustment  to the Warrants or any provision or condition  thereof in respect
of any dividends or distributions  out of earnings shall be made during the term
of the Warrants or upon the exercise of Warrants.

        6.3. Dividends Not Paid Out of Earnings or Earned Surplus.  In the event
the  Company  shall  declare a dividend  upon the Common  Shares  (other  than a
dividend  payable in Common  Shares)  payable  otherwise than out of earnings or
earned  surplus,  determined in accordance  with generally  accepted  accounting
principles,   including  the  making  of  appropriate  deductions  for  minority
interests,   if  any,  in  subsidiaries  (herein  referred  to  as  "Liquidating
Dividends"),  then, as soon as possible after the exercise of this Warrant,  the
Company shall pay to the person  exercising  such Warrant an amount equal to the
aggregate  value  at the  time of such  exercise  of all  Liquidating  Dividends
(including  but not limited to the Common Shares which would have


                                      A-12
<PAGE>


been issued at the time of such earlier  exercise and all other securities which
would have been  issued with  respect to such  Common  Shares by reason of stock
splits,  stock  dividends,  amalgamations or  reorganizations,  or for any other
reason).  For the purposes of this subsection 6.3, a dividend other than in cash
shall be considered payable out of earnings or earned surplus only to the extent
that such  earnings or earned  surplus  are charged an amount  equal to the fair
value of such  dividend as determined in good faith by the Board of Directors of
the Company.

        6.4. Reclassification,  Amalgamation, etc. If any capital reorganization
or  reclassification of the share capital of the Company, or amalgamation of the
Company with another corporation, or the sale of all or substantially all of its
assets to another  corporation  shall be effected in such a way that  holders of
Common  Shares  shall be entitled to receive  stock,  securities,  cash or other
property with respect to or in exchange for Common Shares,  then, as a condition
of such  reorganization,  reclassification,  amalgamation  or sale,  lawful  and
adequate provision shall be made whereby the Warrantholder  shall have the right
to acquire  and receive  upon  exercise  of this  Warrant  such shares of stock,
securities,  cash  or  other  property  issuable  or  payable  (as  part  of the
reorganization,  reclassification,  amalgamation  or sale) with respect to or in
exchange for such number of outstanding  Shares as would have been received upon
exercise of this Warrant at the Warrant  Price then in effect.  The Company will
not effect  any such  amalgamation  or sale,  unless  prior to the  consummation
thereof the amalgamated  corporation or the  corporation  purchasing such assets
shall assume by written  instrument mailed or delivered to the Warrantholder the
obligation to deliver to such holder such shares of stock,  securities or assets
as, in accordance with the foregoing provisions,  such holder may be entitled to
purchase. If a purchase, tender or exchange offer is made to and accepted by the
holders of more than 50% of the  outstanding  Common Shares of the Company,  the
Company  shall not effect any  amalgamation  or sale with the person having made
such  offer  or  with  any  Affiliate  of  such  person,  unless  prior  to  the
consummation  of such  amalgamation  or sale the  Warrantholder  shall have been
given a  reasonable  opportunity  to then elect to receive  upon the exercise of
this Warrant  either the stock,  securities or assets then issuable with respect
to the Common Shares of the Company or the stock,  securities or assets,  or the
equivalent,  issued to previous  holders of the Common Shares in accordance with
such offer.  For purposes hereof the term  "Affiliate" with respect to any given
person shall mean any person controlling,  controlled by or under common control
with  the  given  person.  In  the  event  of  a  merger  described  in  Section
368(a)(2)(E) of the Internal Revenue Code of 1986 (or any successor  provision),
in which the Company is the surviving corporation,  the right to purchase Shares
upon  exercise of the  Warrants  shall  terminate on the date of such merger and
thereupon the Warrants shall become null and void,  but only if the  controlling
corporation  (after such event) shall agree to  substitute  for the Warrants its
warrants  entitling the  Warrantholder to purchase the kind and amount of shares
and other  securities  and property which it would have been entitled to receive
had the Warrants  been  exercised  immediately  prior to such  merger.  Any such
agreements  referred to in this  subsection  6.3 shall provide for  adjustments,
which shall be as nearly  equivalent as may be  practicable  to the  adjustments
provided for in this Section 6, and shall contain  substantially the same terms,
conditions  and  provisions as are contained  herein  immediately  prior to such
event. The provisions of this subsection 6.4 shall similarly apply to successive
amalgamations, sales or conveyances.


                                      A-13
<PAGE>


        6.5. No Adjustment for Exercise of Certain Options,  Warrants,  Etc. The
provisions  of this  Section  6 shall  not apply to any  Common  Shares  issued,
issuable or deemed outstanding under  subparagraphs  6.1(a)(1) to (8) inclusive:
(i) to any person  pursuant to any stock option,  stock purchase or similar plan
or  arrangement  for the benefit of employees,  consultants  or directors of the
Company or its subsidiaries in effect on the date hereof or hereafter adopted by
the Board of Directors of the Company, or (ii) pursuant to options, warrants and
conversion  rights in existence on the date hereof,  including  the  Convertible
Shares.

        6.6. Grant, Issue or Sale of Options, Convertible Securities, or Rights.
If at any time or from time to time on or after the date of this Agreement,  the
Company shall grant, issue or sell any Options, Convertible Securities or rights
to purchase  property (the "Purchase  Rights") pro rata to the record holders of
any class of share capital of the Company and such grants, issuances or sales do
not result in an adjustment of the Warrant  Price under Section  6.1(a)  hereof,
then the  Warrantholder  shall be entitled to acquire  (within  thirty (30) days
after the later to occur of the initial exercise date of such Purchase Rights or
receipt by the Warrantholder of the notice  concerning  Purchase Rights to which
the  Warrantholder  shall be  entitled  under  Section  8) and  upon  the  terms
applicable to such Purchase Rights either:

               (a) the aggregate  Purchase Rights which the Warrantholder  could
        have  acquired  if it had held the  number  of  Shares  acquirable  upon
        exercise of this Warrant immediately before the grant,  issuance or sale
        of such  Purchase  Rights;  provided  that if any  Purchase  Rights were
        distributed to the Warrantholder of Common Shares without the payment of
        additional consideration by such holders,  corresponding Purchase Rights
        shall be  distributed  to the  Warrantholder  as soon as possible  after
        exercise  of  this  Warrant  and it  shall  not  be  necessary  for  the
        Warrantholder specifically to request delivery of such rights; or

               (b) in the event that any such Purchase Rights shall have expired
        or shall  expire  prior to the end of said thirty  (30) day period,  the
        number of Shares or the amount of property which the Warrantholder could
        have  acquired  upon  such  exercise  at the time or times at which  the
        Company granted, issued or sold such expired Purchase Rights.

        6.7.  Nominal  Value of Common  Shares.  Before  taking any action which
would cause an adjustment  effectively reducing the portion of the Warrant Price
allocable to each Share below the then  nominal  value per Share  issuable  upon
exercise of the Warrants,  the Company will take any corporate action which may,
in the  opinion of its  counsel,  be  necessary  in order that the  Company  may
validly and legally issue fully paid and  nonassessable  Shares upon exercise of
the Warrants.

        6.8.  Independent Public  Accountants.  The Company may retain a firm of
independent  public  accountants of recognized  national  standing in the United
States  (which may be any such firm  regularly  employed by the Company) to make
any computation required under this Section.

                                      A-14
<PAGE>

        6.9. Statement on Warrant Certificates.  Irrespective of any adjustments
in the  number  of  securities  issuable  upon  exercise  of  Warrants,  Warrant
certificates  theretofore or thereafter  issued may continue to express the same
number of securities as are stated in the similar Warrant certificates initially
issuable  pursuant to this Agreement.  However,  the Company may, at any time in
its reasonable  discretion,  make any change in the form of Warrant  certificate
that it may deem appropriate and that does not affect the substance thereof; and
any Warrant certificate hereafter issued,  whether upon registration of transfer
of, or in exchange or substitution for, an outstanding Warrant certificate,  may
be in the form so changed.

        6.10. Adjustment by Board of Directors. If any event occurs as to which,
in the opinion of the Board of Directors of the Company,  the provisions of this
Section 6 are not strictly applicable or if strictly applicable would not fairly
protect the rights of the  Warrantholder in accordance with the essential intent
and  principles of such  provisions,  then the Board of Directors  shall make an
adjustment  in the  application  of such  provisions,  in  accordance  with such
essential intent and principles,  so as to protect such rights as aforesaid, but
in no event shall any adjustment have the effect of increasing the Warrant Price
as  otherwise  determined  pursuant to any of the  provisions  of this Section 6
except in the case of a combination of shares of a type  contemplated in Section
6.1(a)  and then in no event  to an  amount  larger  than the  Warrant  Price as
adjusted pursuant to Section 6.1(a).

        Section 7. Fractional Interests.  The Company shall not issue fractional
Common  Shares upon any  exercise of any  Warrants.  If any fraction of a Common
Share  would,  except for the  provisions  of this Section 7, be issuable on the
exercise of any  Warrants,  the Company shall pay an amount in cash equal to the
Market Price (as defined in Section 2(b) hereof, except if the Common Shares are
not publicly  traded,  as  determined in good faith by the Board of Directors of
the Company)  multiplied by such  fraction,  provided,  however,  that no amount
shall be paid by the Company of less than U.S. $5.00.

        Section 8. No Rights as Shareholder;  Notices to Warrantholder.  Nothing
contained in this  Agreement or in the Warrants shall be construed as conferring
upon the  Warrantholder  any rights as a shareholder  of the Company,  including
(without  limitation) the right to vote, receive  dividends,  consent or receive
notices  as a  shareholder  in respect of any  meeting of  shareholders  for the
election of  directors  of the Company or any other  matter,  except as provided
herein.  If,  however,  at any time prior to the  expiration of the Warrants and
prior to their exercise in full,  any one or more of the following  events shall
occur:

               (a) any action  which  would  require an  adjustment  pursuant to
        Section 6.1 or 6.3; or

               (b) the Company  shall  declare any cash dividend upon its Common
        Shares; or

                                      A-15
<PAGE>

               (c) the Company shall declare any dividend upon its Common Shares
        payable in stock or make any special  dividend or other  distribution to
        the holders of its Common Shares; or

               (d) the Company shall offer Purchase Rights to the holders of its
        Common Shares; or

               (e) there shall be any capital reorganization or reclassification
        of the share  capital  of the  Company,  including  any  subdivision  or
        combination of its  outstanding  Common Shares,  or  amalgamation of the
        Company  with,  or sale of all or  substantially  all of its  assets to,
        another corporation; or

               (f) there shall be a  dissolution,  liquidation  or winding up of
        the Company (other than in connection  with an  amalgamation  or sale of
        its property,  assets and business as an entirety or substantially as an
        entirety);

then  the   Company   shall  give  notice  in  writing  of  such  event  to  the
Warrantholder,  as provided in Section 10 hereof,  at least 20 days prior to (i)
the date fixed as a record  date or the date of closing the  transfer  books for
the  determination  of  the  shareholders  entitled  to any  relevant  dividend,
distribution,  Purchase  Rights  or other  rights  or for the  determination  of
shareholders entitled to vote on such proposed reorganization, reclassification,
amalgamation,  sale,  dissolution,  liquidation  or winding up and (ii) the date
when any such reorganization, reclassification, amalgamation, sale, dissolution,
liquidation or winding up shall take place.  Such notice in accordance  with the
foregoing  clause  (i) shall  also  specify,  in the case of any such  dividend,
distribution or Purchase Rights,  the date on which the holders of Common Shares
shall be entitled  thereto,  and such notice in  accordance  with the  foregoing
clause (ii) shall also  specify  the date on which the holders of Common  Shares
shall be  entitled to  exchange  their  Common  Shares for  securities  or other
property deliverable upon such reorganization,  reclassification,  amalgamation,
sale, dissolution, liquidation or winding up, as the case may be.

        Section 9. No Dilution or Impairment. The Company will not, by amendment
of its charter or through  reorganization,  amalgamation,  dissolution,  sale of
assets or any other voluntary  action,  avoid or seek to avoid the observance or
performance  of any of the terms of this Warrant,  but will at all times in good
faith assist in the carrying out of all such terms and in the taking of all such
action as may be necessary or  appropriate in order to protect the rights of the
Warrantholder  against  dilution  or  other  impairment.  Without  limiting  the
generality of the foregoing,  the Company will not increase the par value of any
shares  receivable  upon the exercise of this Warrant  above the amount  payable
therefor upon such  exercise,  and at all times will take all such action as may
be  necessary or  appropriate  in order that the Company may validly and legally
issue fully paid and non-assessable shares upon the exercise of this Warrant.

        Section 10. Notices.  Any notice hereunder shall be in writing and shall
be effective  when  delivered in person or by facsimile  transmission,  or seven
business  days after being  mailed


                                      A-16
<PAGE>


by certified or registered mail, postage prepaid,  return receipt requested,  to
the appropriate party at the following addresses:

If to the Warrantholder:

               Warburg Pincus Ventures, L.P.
               466 Lexington Avenue
               New York, New York 10017-3147
               Facsimile: 212-878-9351
               Attention:  Mr. Joel Ackerman

with a copy to:

               Willkie Farr & Gallagher
               153 East 53rd Street
               New York, New York 10022
               Facsimile: 212-821-8111
               Attention: Steven J. Gartner, Esq.

If to the Company:

               HealthCare Capital Corp.
               111 SW Fifth Avenue, Suite 2390
               Portland, Oregon 97204
               Facsimile: 503-225-9309
               Attention:  Mr. Brandon M. Dawson

with copy to:

               Carter, Ledyard & Milburn
               2 Wall Street
               New York, New York  10005
               Facsimile:  212-732-3232
               Attention:  John K. Whelan, Esq.

 or,  in each  case,  to such  other  address  as the  parties  may  hereinafter
designate by like notice.

        Section  11.  Successors.  All  the  covenants  and  provisions  of this
Agreement  for the benefit of the  Warrantholder  or the Company  shall bind and
inure to the benefit of their successors and, in the case of the  Warrantholder,
permitted assigns. This Agreement shall not be assignable by the Company.

        Section  12.  Amalgamation  of  the  Company.   The  Company  shall  not
amalgamate with any other  corporation or sell all or  substantially  all of its
property  to another  corporation,  unless  the  provisions  of Section  6.4 are
complied with.

                                      A-17
<PAGE>


        Section 13. Remedies. The Company stipulates that the remedies at law of
the  Warrantholder in the event of any default by the Company in the performance
of or  compliance  with any of the terms of this Warrant are not and will not be
adequate, and that the same may be specifically enforced.

        Section 14.  Subdivision  of Rights.  The  Warrants  (as well as any new
warrants  issued  pursuant to the provisions of this Section) are  exchangeable,
upon the surrender  hereof by the  Warrantholder  at the principal office of the
Company for any number of new  warrants of like tenor and date  representing  in
the aggregate the right to subscribe for and purchase the number of Shares which
may be subscribed for and purchased hereunder.

        Section 15. Applicable Law;  Submission to Jurisdiction.  This Agreement
shall be deemed to be a  contract  made  under the laws of the State of New York
and for all purposes shall be construed in accordance  with the internal laws of
said State (without reference to its rules as to conflicts of laws). The Company
hereby agrees to the  non-exclusive  jurisdiction  of the courts of the State of
New York or the  federal  courts  sitting in the City of New York in  connection
with any action arising out of this Agreement.

        Section 16.  Benefits of this  Agreement.  Except as provided in Section
1.2 and Section 11, nothing in this Agreement  shall be construed to give to any
person or corporation  other than the Company and the Warrantholder any legal or
equitable  right,  remedy or claim under this  Agreement.  Except as provided in
Section 1.2 and Section 11, this  Agreement  shall be for the sole and exclusive
benefit of the Company and the Warrantholder.

        IN WITNESS  WHEREOF,  the parties have caused this  Agreement to be duly
executed, all as of the date and year first above written.

                                      HEALTHCARE CAPITAL CORP.


                                      By: --------------------------------------
                                              Name:
                                              Title:


                                      WARBURG PINCUS VENTURES, L.P.


                                      By: Warburg, Pincus & Co.,
                                          General Partner




                                              By:
                                                  -----------------------------
                                              Print Name:
                                              Title:


                                      A-18
<PAGE>

                                                                       EXHIBIT 1

                          [FORM OF WARRANT CERTIFICATE]

               "THE WARRANTS  REPRESENTED  BY THIS  CERTIFICATE,  AND THE COMMON
               SHARES  ISSUABLE  UPON EXERCISE OF SUCH  WARRANTS,  HAVE NOT BEEN
               REGISTERED UNDER THE UNITED STATES  SECURITIES ACT OF 1933 OR THE
               SECURITIES LAWS OF ANY STATE OF THE UNITED STATES OR ANY PROVINCE
               OF  CANADA.  SUCH  WARRANTS  MAY NOT BE SOLD,  OFFERED  FOR SALE,
               ASSIGNED,   EXCHANGED,   PLEDGED  OR  HYPOTHECATED  OR  OTHERWISE
               TRANSFERRED,  IN ANY MANNER,  AND SUCH  COMMON  SHARES MAY NOT BE
               OFFERED FOR SALE, SOLD, PLEDGED OR HYPOTHECATED OR TRANSFERRED IN
               THE  ABSENCE  OF SUCH  REGISTRATION  OR AN  OPINION  OF  COUNSEL,
               REASONABLY  SATISFACTORY  TO THE COMPANY,  THAT AN EXEMPTION FROM
               SUCH REGISTRATION IS AVAILABLE." THE WARRANTS REPRESENTED BY THIS
               CERTIFICATE  MAY NOT BE TRADED IN CANADA  EXCEPT AS  PERMITTED BY
               RELEVANT CANADIAN SECURITIES LAWS.


                                                   WARRANT CERTIFICATE NO. -----


                            HEALTHCARE CAPITAL CORP.

                            (ORGANIZED UNDER THE LAWS
                                   OF ALBERTA)
                                                                JANUARY --, 1998

                       WARRANTS TO PURCHASE COMMON SHARES

        This certifies that, for value received,  Warburg Pincus Ventures,  L.P.
(the  "Warrantholder")  is the registered owner of --- warrants (the "Warrants")
each to purchase from  HealthCare  Capital Corp.  (the  "Company"),  at any time
prior to 5:00 p.m.,  Pacific Time, on January --, 2001,  one common share of the
Company,  without  par value (a "Common  Share") at a purchase  price per Common
Share of U.S. $2.40 (the "Warrant Price").  The Warrants are subject to, and the
Warrantholder, by acceptance of this certificate, consents to, all the terms and
provisions of, the Warrant  Agreement dated as of January 16, 1998,  between the
Warrantholder  and the Company,  pursuant to which the Warrants were issued (the
"Warrant  Agreement").  Any capitalized terms used herein and not defined herein
shall have the  meanings  assigned to such terms in the Warrant  Agreement.  The
Termination  Date may be extended for a further period of two years, as provided
in Section 2(a) of the Warrant Agreement.

                                      A-19
<PAGE>

        The  Warrants  evidenced  hereby may be exercised in whole or in part by
presentation  of this Warrant  Certificate  with the  Purchase  Form herein duly
executed  (with a signature  guarantee as provided  therein),  and  simultaneous
payment of the Warrant Price for each Warrant exercised, at the principal office
of the  Company.  Payment  of such  price  shall  be made at the  option  of the
Warrantholder  in cash by certified or official bank check or by wire  transfer.
Subject  to the  terms and  conditions  set  forth in  Section 2 of the  Warrant
Agreement,  the  Warrantholder  may also receive  Common Shares without any cash
payment by presentation of this Warrant  Certificate with the Cashless  Exercise
Form herein duly executed  (with a signature  guarantee as provided  therein) at
the principal office of the Company.

        Upon any partial exercise of the Warrants evidenced hereby,  there shall
be signed and issued to the  Warrantholder a new Warrant  Certificate in respect
of the Common  Shares as to which the Warrants  evidenced  hereby shall not have
been exercised.  These Warrants may be exchanged at the office of the Company by
surrender  of this  Warrant  Certificate  properly  endorsed for one or more new
Warrants of the same aggregate  number of Common Shares as here evidenced by the
Warrant or Warrants  exchanged.  No fractional Common Shares will be issued upon
the exercise of rights to purchase hereunder, but the Company shall pay the cash
value  of any  fraction  otherwise  issuable  upon the  exercise  of one or more
Warrants, as provided in the Warrant Agreement.

        The Warrants  evidenced hereby are transferable  only in accordance with
the terms and conditions set forth in Section 1.2 of the Warrant Agreement.

        This Warrant  Certificate  does not entitle the  Warrantholder to any of
the rights of a shareholder of the Company.

                                             HEALTHCARE CAPITAL CORP.

                                             By: -----------------------------

                                             Title: -------------------------
ATTEST:

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

Title:------------------------

Dated: -----------------, 1998


                                      A-20
<PAGE>



                                                                       EXHIBIT 2
                                  PURCHASE FORM

HealthCare Capital Corp.
111 SW Fifth Avenue, Suite 2390
Portland, Oregon 97204

        Pursuant  to Section  2(a) of the  Warrant  Agreement,  the  undersigned
hereby irrevocably elects to exercise the right of purchase  represented by this
Warrant Certificate for, and to purchase thereunder, ---------- common shares of
the Company  (the "Common  Shares"),  and requests  that  certificates  for such
Common Shares be issued in the name of:

Warburg Pincus Ventures, L.P.
466 Lexington Avenue
New York, New York 10017-3147
Taxpayer Identification Number: ----------------

If this Warrant Certificate is hereby being exercised with respect to fewer than
all the Common Shares specified herein,  please issue a new Warrant  Certificate
for the  unexercised  balance  of the  Warrants,  registered  in the name of the
undersigned Warrantholder as below indicated and delivered to the address stated
below.

Dated: -----------------------

Name of Warrantholder:

Warburg Pincus Ventures, L.P.
466 Lexington Avenue
New York, New York 10017-3147

        By:  Warburg, Pincus & Co.
               General Partner

             By:--------------------------------
                Print Name:
                Title:



                                      A-21
<PAGE>



                                                                       EXHIBIT 3
                             CASHLESS EXERCISE FORM

HealthCare Capital Corp.
111 SW Fifth Avenue, Suite 2390
Portland, Oregon 97204

        Pursuant  to Section  2(b) of the  Warrant  Agreement,  the  undersigned
hereby  irrevocably  elects to exercise  the right  represented  by this Warrant
Certificate for, and to receive thereunder without any cash payment,  ----------
common shares of the Company (the "Common Shares") as provided for therein,  and
requests that certificates for such Common Shares be issued in the name of:

Warburg Pincus Ventures, L.P.
466 Lexington Avenue
New York, New York 10017-3147
Taxpayer Identification Number:

If this Warrant Certificate is hereby being exercised with respect to fewer than
all the Common Shares specified herein,  please issue a new Warrant  Certificate
for the  unexercised  balance  of the  Warrants,  registered  in the name of the
undersigned Warrantholder as below indicated and delivered to the address stated
below.

Dated: -----------------------

Name of Warrantholder :

Warburg Pincus Ventures, L.P.
466 Lexington Avenue
New York, New York 10017-3147

        By:  Warburg, Pincus & Co.
               General Partner

             By:--------------------------------
                Print Name:
                Title:


                                      A-22
<PAGE>


                                                                       EXHIBIT B


                             SHAREHOLDERS' AGREEMENT

        This Shareholders' Agreement is made as of January --, 1998 by and among
Warburg Pincus Ventures, L.P. (the "Investor") and the undersigned  shareholders
(collectively,  the "Shareholders"  and each  individually,  a "Shareholder") of
HealthCare Capital Corp. (the "Company").

        WHEREAS,  the authorized share capital of the Company consists of common
shares  without par value (the  "Common  Shares"),  of which  27,284,517  Common
Shares are presently issued and outstanding.

        WHEREAS,  the Company and the  Investor  have  entered into a Securities
Purchase  Agreement  dated as of  November  21, 1997 (the  "Securities  Purchase
Agreement")  pursuant to which the Company shall issue certain securities to the
Investor (the "Securities").

        WHEREAS,  it is desirable that each Shareholder  provide to the Investor
at least three (3) business days notice of Transfers (as defined  below) of more
than 500,000 Common Shares in a single transaction.

        NOW,  THEREFORE,  in  order to  induce  the  Investor  to  purchase  the
Securities  and in  consideration  of the mutual  benefits  to be  derived,  the
conditions and promises herein, and other good and valuable  consideration,  the
receipt and  sufficiency of which are hereby  acknowledged,  and intending to be
legally bound hereby, the parties agree as follows:

        1.  Requirement  of Notice for  Transfers  in Excess of  500,000  Common
Shares.  Each  Shareholder  hereby agrees that as long as such  Shareholder owns
beneficially (within the meaning of Rule 13d-3 under the Securities Exchange Act
of 1934,  as amended  (the  "Exchange  Act")),  five percent (5%) or more of the
outstanding Common Shares,  such Shareholder will, from the date hereof, and for
so long as the Investor owns beneficially at least 3,333,333  outstanding Common
Shares or Series A Convertible Preferred Shares of the Company (the "Convertible
Shares") as appropriately  adjusted for any stock splits,  consolidations or the
like,  but only until  termination  of the  registration  rights  granted to the
Investor pursuant to Section 8 of the Securities  Purchase  Agreement,  give the
Investor not less than three (3) business  days notice in writing in  accordance
with Section 2 hereof prior to any Transfer of more than 500,000  Common  Shares
in a single transaction.

               For purposes  hereof,  "Transfer" shall mean, with respect to the
Common Shares, the making of any sale, exchange,  conveyance,  assignment, gift,
security interest, pledge or other encumbrance,  option or right of purchase, or
any contract  therefor,  or any voting trust or other  agreement or  arrangement
with respect to the transfer of voting rights or any other  beneficial  interest
in any of the Common  Shares,  the  execution of any other claim  thereto or any
other transfer or disposition  (including,  without limitation,  any disposition
which would constitute a sale within the meaning of the United States Securities
Act of 1933, as amended) whatsoever, whether


                                      B-1
<PAGE>


voluntary or involuntary,  affecting the right, title, interest or possession in
or to such Common Shares.

        2.  Notices.  Any  notice  hereunder  shall be in  writing  and shall be
effective  when  delivered  in person  or by  facsimile  transmission,  or seven
business  days after being  mailed by  certified  or  registered  mail,  postage
prepaid,  return receipt requested,  to the appropriate party or parties, at the
following respective addresses:

If to the Investor:

               Warburg Pincus Ventures, L.P.
               466 Lexington Avenue
               New York, New York 10017-3147
               Facsimile: 212-878-9351
               Attention: Joel Ackerman

with a copy to:

               Willkie Farr & Gallagher
               153 E. 53rd Street
               New York, New York 10022
               Facsimile: 212-821-8111
               Attention: Steven J. Gartner

If to the Shareholders:

               Brandon M. Dawson
               111 SW Fifth Avenue, Suite 2390
               Portland, Oregon 97204
               Facsimile: 503-225-9309

               Douglas F. Good
               799 Box Canyon Trail
               Palm Desert, California 92211
               Facsimile: 760-360-8191

               Marilyn Marshall
               799 Box Canyon Trail
               Palm Desert, California 92211
               Facsimile: 760-360-8191

               Gregory J. Frazer, Ph.D.
               1477 Dwight Drive
               Glendale, California 91207
               Facsimile: 818-244-8889


                                       B-2
<PAGE>

               Carissa Bennett
               1477 Dwight Drive
               Glendale, California 91207
               Facsimile: 818-244-8889

               Jami Tanihana
               16748 Tribune Street
               Granada Hills, California 91344
               Facsimile: 818-360-9177

               Baron and Darlene Cass "Family Foundation"
               5005 LBJ Freeway, Suite 1130
               Lockbox 119
               Dallas, Texas 75244
               Facsimile: 214-233-0112
               Attention: A. Baron Cass III

               A. Baron Cass III "Children's Trust"
               5005 LBJ Freeway, Suite 1130
               Lockbox 119
               Dallas, Texas 75244
               Facsimile: 214-233-0112
               Attention: A. Baron Cass III

               A. Baron Cass III
               5005 LBJ Freeway, Suite 1130
               Lockbox 119
               Dallas, Texas 75244
               Facsimile: 214-233-0112

               Aspen Limited Partnership
               3131 Maple Avenue, Suite 4D
               Dallas, Texas 97201
               Facsimile: 214-720-7570
               Attention: Marc R. Still

               Marc R. Still IRA
               3131 Maple Avenue, Suite 4D
               Dallas, Texas 97201
               Facsimile: 214-720-7570

or, in each case, to such other address as the parties may hereinafter designate
by like notice.

        3.  Applicable Law. This Agreement shall be deemed to be a contract made
under the laws of the State of New York and for all purposes  shall be construed
in  accordance  with the internal laws of said State  (without  reference to its
rules as to conflicts of laws).


                                      B-3
<PAGE>

        4. Further Assurances.  Each of the parties hereby covenants  separately
with each of the others that,  insofar as it is within his or its power, he will
take and do all  necessary  steps and actions or otherwise act or omit to act to
ensure that the  provisions  of this  Agreement are given,  and remain,  in full
force and effect.

        5.  Entire  Agreement;   Amendment  and  Modification.   This  Agreement
represents  the entire  agreement  among the parties  hereto with respect to the
subject matter hereof,  and may be amended,  modified or supplemented  only by a
written instrument executed by all of the parties hereto.

        6.  Waivers  of  Compliance.   Except  as  otherwise  provided  in  this
Agreement,  any  failure of any of the  parties to comply  with any  obligation,
covenant,  agreement or condition herein may be waived by the Investor only by a
written instrument signed by the Investor, but any such waiver or the failure to
insist  upon strict  compliance  with any  obligation,  covenant,  agreement  or
condition  herein shall not operate as a waiver of, or estoppel with respect to,
any subsequent or other failure or breach.

        7. Binding  Effect.  This Agreement shall inure to the benefit of and be
binding  upon the parties to this  Agreement  and their  respective  successors,
heirs, executors and legal representatives.

        8.  Counterparts.  This  Agreement  may be  executed  in any  number  of
counterparts,  and each  such  counterpart  shall be  deemed  to be an  original
instrument, and all such counterparts together shall constitute one and the same
instrument.


        IN WITNESS  WHEREOF,  the  parties  have  executed  and  delivered  this
Agreement as of the date first above written.

                           WARBURG PINCUS VENTURES, L.P.
                           By:  Warburg, Pincus & Co.,
                                General Partner

                            By: Warburg, Pincus & Co.
                                  General Partner

                                By:--------------------------------
                                   Print Name:
                                   Title:


                                   -------------------------------
                                   Brandon M. Dawson


                                      B-4
<PAGE>

                                   -------------------------------
                                   Douglas F. Good


                                   -------------------------------
                                   Marilyn Marshall


                                   -------------------------------
                                   Gregory J. Frazer, Ph.D.


                                   -------------------------------
                                   Carissa Bennett


                                   -------------------------------
                                   Jami Tanihana


                                   -------------------------------
                                   A. Baron Cass III


                                   BARON AND DARLENE CASS
                                   "FAMILY FOUNDATIONS"


                                   By: -------------------------------
                                       A. Baron Cass III
                                       Title:

                                   A. BARON CASS III
                                   "CHILDRENS TRUST"


                                   By: -------------------------------
                                       A. Baron Cass III
                                       Title:

                                      B-5
<PAGE>

                                   ASPEN LIMITED PARTNERSHIP


                                   By: -------------------------------
                                       Marc R. Still
                                       Title:

                                   By: ---------------------------
                                       Marc R. Still




                                      B-6
<PAGE>


                                                                       EXHIBIT C




                            HEALTHCARE CAPITAL CORP.

                 TERMS OF SERIES A CONVERTIBLE PREFERRED SHARES
                               (Without Par Value)




        We, the  undersigned,  Brandon  M.  Dawson and  William  DeJong,  being,
respectively,  the President and the Secretary of HealthCare  Capital  Corp.,  a
corporation organized and existing under the laws of Alberta (hereinafter called
the "Corporation"), DO HEREBY CERTIFY:

        FIRST:         That  the  Board  of  Directors  of the  Corporation,  by
unanimous  written  consent  dated  November  20,  1997,  has duly  adopted  the
following resolutions providing for the issuance of a series of preferred shares
of the Corporation:

               "RESOLVED  that the Board of  Directors of the  Corporation  (the
        "Board") hereby  authorizes the issuance of a series of preferred shares
        of  the  Corporation  and  hereby  fixes  the  designation,  powers  and
        preferences, and the relative, participating, optional and other special
        rights and  qualifications,  limitations and  restrictions  thereof,  in
        addition to those set forth in the Corporation's  Articles,  as amended,
        as follows:

               "1.  Number and  Designation.  The number of shares to constitute
        this series shall be 13,333,333 and the designation of such shares shall
        be the "Series A Convertible Preferred Shares" (hereinafter called "this
        Series"). The number of shares constituting this Series may be decreased
        from time to time by action of the  Board,  but not below the  number of
        shares of this Series then outstanding.  All shares of this Series shall
        be identical with each other in all respects.  The shares of this Series
        shall rank  senior to the common  shares  (the  "Common  Shares") of the
        Corporation  as to cash  dividends  and upon  liquidation,  as described
        below. Any amounts herein  referencing share prices or numbers of shares
        shall be subject to  appropriate  adjustments  in the event of any stock
        splits, consolidations or the like.

               "2.     Dividend Rights.

               (a) Subject to the  provisions  of this Section 2, the holders of
        shares of this  Series  shall be  entitled  to receive  when,  as and if
        declared  by  the  Board,  out of  assets  legally  available  therefor,
        cumulative  dividends  ("Dividends")  at the  applicable  rate per


                                      C-1
<PAGE>

        annum  specified  in Section  2(b) hereof from the date of issuance  and
        payable in  accordance  with  Section 2(c)  hereof.  Dividends  shall be
        cumulative  from the date of  initial  issuance  of the  shares  of this
        Series  (the  "Initial  Issuance  Date"),  whether or not there shall be
        assets legally available for the payment of such Dividends. In the event
        that  the  Board  shall  declare  a  Dividend,   subject  to  applicable
        regulatory approvals, such Dividend may, at the discretion of the Board,
        be payable in Common Shares. The number of Common Shares to be issued to
        the  holders of shares of this  Series upon the payment of a Dividend in
        Common  Shares  shall be the  amount of the  Dividends  payable  to such
        holder  pursuant to this  Section 2 divided by either (i) (if the Common
        Shares are not traded on the New York Stock Exchange, the American Stock
        Exchange  or the  Nasdaq  National  Market)  U.S.  $1.35 or (ii) (if the
        Common  Shares are traded on the New York Stock  Exchange,  the American
        Stock Exchange or the Nasdaq  National  Market) the average Market Price
        of the  Common  Shares  as such term is  defined  below for the ten (10)
        trading  days  immediately  preceding  the  Record  Date as such term is
        defined in Section 2(c) hereof.

                       For all purposes  hereof,  the term "Market  Price of the
        Common  Shares" as of any specified  date shall mean:  (i) if the Common
        Shares are listed or admitted  for trading on one or more United  States
        national  securities  exchanges,  the daily closing price for the Common
        Shares  on the  principal  exchange  in the  United  States on which the
        Common  Shares are listed;  (ii) if the Common  Shares are not listed or
        admitted for trading on any United States national securities  exchange,
        the daily closing price for the Common Shares on the Nasdaq  National or
        Nasdaq Small-Cap Market  ("Nasdaq");  (iii) if the Common Shares are not
        listed or admitted for trading on a United  States  national  securities
        exchange or on Nasdaq,  the daily  closing price of the Common Shares on
        the  principal  stock  exchange in Canada on which the Common Shares are
        listed  (expressed in United  States  dollars based upon the noon buying
        rate in New  York  City for  cable  transfers  in  Canadian  dollars  as
        certified for customs purposes by the Federal Reserve Bank of New York);
        (iv) if the Common  Shares are not listed or  admitted to trading on any
        United States national or Canadian  national  securities  exchange or on
        Nasdaq,  the average of the reported bid and asked prices on the trading
        day preceding such date in the  over-the-counter  market as furnished by
        the  National  Quotation  Bureau,  Inc.,  or,  if such  firm is not then
        engaged in the  business of reporting  such prices,  as furnished by any
        member of the National Association of Securities Dealers,  Inc. selected
        by the Company; or (v) if the Common Shares are not publicly traded, the
        Market  Price  for such  day  shall be the  fair  market  value  thereof
        determined  jointly by the  Company  and the holder of a majority of the
        shares of this Series then outstanding;  provided, however, that if such
        parties  are unable to reach  agreement  within a  reasonable  period of
        time,  the  Market  Price  shall  be  determined  in good  faith  by the
        independent  investment banking firm selected jointly by the Company and
        the holder of a majority of the shares of this  Series then  outstanding
        or, if that selection cannot be made within an additional 15 days, by an
        independent investment banking firm selected by the American Arbitration
        Association in accordance with its rules.


                                      C-2
<PAGE>

               "(b) The  Dividend  per share of this  Series  shall be  computed
        based  upon a rate per annum of 5% on a base  amount  of U.S.  $1.35 per
        share of this Series (the "Base  Amount").  The Dividend  rate per annum
        shall be subject  to  increase  in the event  that all of the  following
        conditions (the "Triggering  Conditions") have not been satisfied by the
        dates specified  below: (i) the Common Shares are listed on the New York
        Stock  Exchange,  the  American  Stock  Exchange or the Nasdaq  National
        Market;  (ii)  the  Common  Shares  are  traded  on the New  York  Stock
        Exchange, the American Stock Exchange or the Nasdaq National Market at a
        Market Price greater than U.S.  $2.40 per Common Share on each of the 10
        consecutive   trading   days   preceding   such  date;   and  (iii)  the
        Corporation's  net income  (excluding  profit or loss on  disposal  of a
        significant  part of the Company's  assets or separate  segment thereof,
        gains on restructuring  payables,  gains or losses on the extinguishment
        of debt, expropriations of property, gains or losses that are the direct
        result  of  a  major  casualty,   or  one-time  losses   resulting  from
        prohibition  under a  newly-enacted  law or  regulation)  before  income
        taxes,  Dividends  on the  shares of this  Series  and  amortization  of
        goodwill and covenants not to compete for the three  consecutive  fiscal
        quarters  preceding  such  date,  as  reported  in or  derived  from the
        Corporation's  quarterly or annual reports filed with the Securities and
        Exchange  Commission,  shall have averaged at least U.S. $0.07 per fully
        diluted Common Share per fiscal quarter,  provided,  however,  in making
        such  calculation,  the Common  Shares  issuable  upon  exercise  of the
        warrants issued to Warburg Pincus Ventures,  L.P. ("Warburg"),  pursuant
        to that certain  Warrant  Agreement  between the Corporation and Warburg
        relating to warrants to purchase  10,000,000 Common Shares (the "Warrant
        Agreement"),  shall be  excluded  but Common  Shares  issuable  upon the
        conversion of the shares of this Series shall not. All references to per
        share amounts or prices with respect to the Triggering  Conditions shall
        be  appropriately  adjusted  for  any  subdivision,   consolidation,  or
        reclassification of the Common Shares.  Until the Triggering  Conditions
        have been satisfied,  the Dividend rate per annum shall be (A)15% of the
        Base Amount per share of this Series from and after  January 1, 2003 and
        payable in  accordance  with Section 2(c) hereof  commencing  January 1,
        2004; (B) 18% of the Base Amount per share of this Series from and after
        January 1, 2004 and  payable in  accordance  with  Section  2(c)  hereof
        commencing  January 1, 2005; and (C) thereafter,  21% of the Base Amount
        per share of this Series  from and after  January 1, 2005 and payable in
        accordance with Section 2(c) hereof commencing January 1, 2006. Upon the
        satisfaction of all the Triggering Conditions, the Dividend per share of
        this Series  shall be computed  based upon a rate per annum of 5% of the
        Base  Amount.  Accruals  of  Dividends  shall  not  bear  interest.  All
        Dividends  declared upon the shares of this Series shall be declared pro
        rata per share.

               "(c) The  record  date for the  determination  of the  holders of
        shares of this Series who shall be entitled  to receive  Dividends  (the
        "Record  Date") shall be the first  business day of each calendar  year,
        and only the  holders  of shares of this  Series of record on the Record
        Date shall be entitled to receive such Dividends.  All Dividends payable
        to such


                                      C-3
<PAGE>


        holders of record shall be paid on the tenth  business day following the
        Record Date on each issued and outstanding share of this Series.

               "(d)  Dividends  payable on shares of this  Series for any period
        other than a full  dividend  period  shall be computed on the basis of a
        360-day year  consisting of twelve 30-day months.  Any Dividend  payment
        made on  shares of this  Series  shall  first be  credited  against  the
        earliest accumulated but unpaid Dividends due with respect to the shares
        of this Series.

               "(e) No  dividends  shall be  declared  or paid or set  aside for
        payment  on  any  share  capital  of  the  Corporation  ranking,  as  to
        dividends,  on a parity with or subordinate to the shares of this Series
        for  any  period  unless  full   accumulated   Dividends  have  been  or
        contemporaneously are declared and paid or declared and a sum sufficient
        for the payment thereof set aside for such payment on the shares of this
        Series for all Dividend  periods  terminating on or prior to the date of
        payment of such  dividends.  When  Dividends are not paid in full on the
        shares of this Series and any other preferred  shares of the Corporation
        ranking with respect to payment of dividends on a parity with the shares
        of this  Series,  all  dividends  declared  or paid upon  shares of this
        Series and such other  preferred  shares  shall be declared and paid pro
        rata so that the amount of dividends  declared and paid on the shares of
        this Series and such other  preferred  shares shall in all cases bear to
        each other the same ratio that accumulated dividends per share (which in
        the  case of  noncumulative  preferred  shares  shall  not  include  any
        accumulation in respect of unpaid dividends for prior dividend  periods)
        on shares of this  Series and such other  preferred  shares bear to each
        other.  Except  as  provided  in the  preceding  sentence,  unless  full
        accumulated  Dividends  have been paid or declared and a sum  sufficient
        for the payment thereof set aside for payment,  no dividends (other than
        dividends or distributions  paid in Common Shares, or options,  warrants
        or rights to subscribe for or purchase Common Shares,  or, in each case,
        any other series of shares of the Corporation ranking subordinate to the
        shares of this Series as to  dividends  and upon  liquidation)  shall be
        declared and paid or a sum sufficient for the payment  thereof set aside
        for payment or any other  distribution  declared or made upon the Common
        Shares  or  any  other  class  of  shares  of  the  Corporation  ranking
        subordinate  to or on a parity  with the  shares  of this  Series  as to
        dividends or upon  liquidation.  No Common Shares or shares of any other
        class of shares of the Corporation ranking subordinate to or on a parity
        with the shares of this Series as to dividends or upon liquidation shall
        be redeemed,  purchased or otherwise acquired for any consideration (and
        no funds shall be paid to or made  available  for a sinking fund for the
        redemption  of any such share  capital)  by the  Corporation  (except by
        conversion  into or  exchange  for  shares  of the  Corporation  ranking
        subordinate  to the  shares  of this  Series  as to  dividends  and upon
        liquidation or except with respect to Common Shares that the Corporation
        has become  obligated  to redeem  prior to the issuance of any shares of
        this Series upon the occurrence of specified  circumstances)  unless, in
        each  case,  the full  accumulated  Dividends  shall  have  been paid or
        declared  and a sum  sufficient  for the  payment  thereof set aside for
        payment.  Holders of shares of this


                                      C-4
<PAGE>

        Series shall not be entitled to any dividend,  whether  payable in cash,
        property or stock, in excess of the full Dividends on such shares.

               "(f) Upon  conversion  of any shares of this Series by any holder
        thereof pursuant to Section 7 hereof,  any Dividends accrued and payable
        to such holder  shall be  forfeited  and the  Corporation  shall have no
        further  obligation  to such  holder of shares of this  Series  for such
        accumulated Dividends.

               "3.  Liquidation  Rights.  (a) In the event of any  voluntary  or
        involuntary  dissolution,  liquidation,  or winding up of the affairs of
        the Corporation, after payment or provision for payment of the debts and
        other  liabilities  of the  Corporation  and  any  preferential  amounts
        payable with respect to securities of the  Corporation  ranking prior to
        the shares of this Series ("Senior  Preferred  Shares"),  the holders of
        shares of this Series  shall be entitled to receive out of the assets of
        the Corporation  available for distribution to shareholders,  before any
        distribution  of assets is made to holders  of the Common  Shares or any
        other share capital of the Corporation ranking subordinate to the shares
        of this Series,  a  liquidating  distribution  in an amount equal to the
        greater of (i) U.S.  $1.35 per share of this Series plus an amount equal
        to any accrued and unpaid Dividends  (including  accumulated  Dividends,
        whether or not declared) to and including  the date of  distribution  or
        (ii) the amount distributable to the holders of shares of this Series as
        if such  holders had  converted  their shares of this Series into Common
        Shares  pursuant  to  Section  7  hereof   immediately   prior  to  such
        dissolution, liquidation or winding up of the affairs of the Corporation
        (plus accumulated Dividends,  whether or not declared).  Amounts payable
        pursuant to clause (i) or (ii) of this Section 3(a) shall be distributed
        ratably  among the holders of shares of this Series in proportion to the
        number of shares of this Series  held.  After  payment to the holders of
        shares of this  Series  of the full  amount to which  such  holders  are
        entitled as set forth above,  the holders of shares of this Series shall
        have  no  right  or  claim  to  any  of  the  remaining  assets  of  the
        Corporation.

               "(b) If upon any such  dissolution,  liquidation or winding up of
        the  affairs  of  the   Corporation,   the  assets  of  the  Corporation
        distributable among the holders of shares of this Series and the holders
        of all other classes or series of shares of the Corporation ranking on a
        parity with the shares of this Series  shall be  insufficient  to permit
        the payment to them of the full  preferential  amounts to which they are
        entitled, then the entire assets of the Corporation so to be distributed
        shall be distributed  ratably among the holders of shares of this Series
        and such  other  classes  or  series of  shares  of the  Corporation  in
        proportion to the sum of the  accumulated  dividends and the liquidation
        preferences per share.

               "(c) The sale,  conveyance,  mortgage,  pledge or lease of all or
        substantially  all the assets of the Corporation shall be deemed to be a
        liquidation,  dissolution or winding up of the  Corporation for purposes
        of this Section 3.

                                      C-5
<PAGE>

               "4. Optional Redemption. (a) The shares of this Series may not be
        redeemed  before the fifth  anniversary  of the Initial  Issuance  Date.
        Thereafter,  the shares of this Series shall be  redeemable  (subject to
        subsection 4(d) below) at the option of the Corporation,  in whole or in
        part,  at the  redemption  price,  which shall be an amount equal to the
        greater of (i) U.S.  $1.35 per share of this  Series  plus the amount of
        any accrued  and unpaid  Dividends  per share of this Series  (including
        accumulated Dividends,  whether or not declared) or (ii) the Fair Market
        Value of a share of this Series (as defined below). For purposes hereof,
        the Fair Market Value shall be  determined  by a  nationally  recognized
        independent   investment   banking  firm  mutually   agreed  to  by  the
        Corporation  and the holder of a majority  of the shares of this  Series
        then outstanding, whose determination shall be conclusive.

               "(b) (i) In case the  Corporation  shall  desire to exercise  its
        right to redeem any shares of this Series,  it shall give notice of such
        redemption  to holders of the shares of this  Series to be  redeemed  as
        hereinafter provided in this Section 4(b).

                       "(ii) Notice of redemption  shall be given to the holders
               of shares of this Series to be redeemed by mailing such notice by
               first-class  mail to their last  addresses  as they shall  appear
               upon the register for the shares of this Series not less than 120
               calendar days prior to the date fixed for redemption.

                       "(iii) Each such notice of  redemption  (A) shall specify
               the date fixed for redemption  and the redemption  price at which
               shares of this  Series are to be  redeemed,  (B) shall state that
               payment of the redemption  price for the shares of this Series to
               be redeemed  will be made at the principal  executive  offices of
               the Corporation,  upon presentation and surrender of certificates
               representing such shares of this Series, and (C) if less than all
               the shares of this Series are to be redeemed,  shall  specify the
               number  of  shares  of this  Series  held by  each  holder  to be
               redeemed.  In case any  certificate  representing  shares of this
               Series is to be redeemed in part only,  the notice of  redemption
               which  relates  to such  certificate  shall  state the  number of
               shares  of this  Series  represented  by such  certificate  to be
               redeemed and shall state that on and after the  redemption  date,
               upon  surrender  of  such  certificate,   a  new  certificate  or
               certificates  for a number of shares of this Series  equal to the
               unredeemed portion thereof will be issued.

                       "(iv) If less than all the  shares of this  Series are to
               be redeemed,  the  Corporation  shall effect such  redemption pro
               rata among the holders  thereof (based on the number of shares of
               this Series held on the date of notice of redemption).

               "(c) (i) If the  giving of notice of  redemption  shall have been
        completed as provided above, the shares of this Series specified in such
        notice shall become redeemable, and shall be redeemed by the Corporation
        upon  presentation  and surrender of the certificate  representing  such
        shares,  on the date  and at the  place  stated  in such


                                      C-6
<PAGE>

        notice at the  redemption  price,  and on and after  such date fixed for
        redemption,  notwithstanding  that any  certificate  for  shares of this
        Series so called  for  redemption  shall not have been  surrendered  for
        cancellation,  unless  there shall have been a default in payment of the
        redemption  price, all shares of this Series called for redemption shall
        no longer be deemed to be  outstanding,  and all rights with  respect to
        such shares of this Series shall  forthwith  cease and terminate  except
        only the right of the holders  thereof to receive  from the  Corporation
        the redemption price,  without  interest,  of the shares to be redeemed,
        and such shares shall not  thereafter be transferred on the books of the
        Corporation or be deemed to be outstanding for any purpose whatsoever.

                       "(ii) Upon  presentation of any certificate  representing
               shares of this Series only a portion of which are to be redeemed,
               the Corporation  shall immediately  issue, at its expense,  a new
               certificate  or  certificates  representing  the  shares  of this
               Series not redeemed.

               "(d) Except as provided in paragraph (a) above,  the  Corporation
        shall have no right to redeem the shares of this  Series.  Any shares of
        this Series so redeemed shall be permanently retired, shall no longer be
        deemed  outstanding and shall not under any  circumstances  be reissued,
        and  the  Corporation  may  from  time  to time  take  such  appropriate
        corporate action as may be necessary to reduce the authorized  shares of
        this Series  accordingly.  Nothing  herein  contained  shall  prevent or
        restrict  the purchase by the  Corporation,  from time to time either at
        public or private  sale,  of the whole or any part of the shares of this
        Series at such price or prices as the Corporation may determine, subject
        to the provisions of applicable law.

               "5. No Mandatory Redemption.  The shares of this Series shall not
        be subject to mandatory redemption by the Corporation.

               "6. Voting Rights.  (a) Each issued and outstanding share of this
        Series  shall be  entitled to the number of votes equal to the number of
        Common  Shares of the  Corporation  into  which  each such share of this
        Series is convertible (as adjusted from time to time pursuant to Section
        7(a) hereof),  at each meeting of shareholders  of the Corporation  with
        respect to any and all  matters  presented  to the  shareholders  of the
        Corporation  for their  action or  consideration.  Except as provided by
        law,  by the  provisions  of  paragraph  (b) below or by the  provisions
        establishing  any other  series of preferred  stock of the  Corporation,
        holders  of the  shares  of this  Series  and of any  other  outstanding
        preferred stock shall vote together with the holders of Common Shares as
        a single class.

               (b)  In  addition  to any  other  rights  provided  by  law,  the
        Corporation  shall not amend,  alter or repeal the preferences,  special
        rights  or other  powers  of the  shares  of this  Series  or any  other
        provision of the Corporation's constating documents that would adversely
        affect  the  rights  of  the  holders  of the  shares  of  this  Series,
        including,  without


                                      C-7
<PAGE>


        limitation, any increase in the number of shares of this Series, without
        the  written  consent  or  affirmative  vote of the  holders of at least
        66-2/3%  of the then  outstanding  aggregate  number  of such  adversely
        affected  shares  of  this  Series,  given  in  writing  or by vote at a
        meeting,  consenting  or  voting  (as the case may be)  separately  as a
        class. For this purpose,  the authorization or issuance of any series of
        preferred stock of the Corporation  with preference or priority over, or
        being on a parity  with the  shares  of this  Series  as to the right to
        receive  either  dividends or amounts  distributable  upon  liquidation,
        dissolution  or  winding  up of  the  Corporation  shall  be  deemed  to
        adversely affect the shares of this Series.

               "7. Conversion. (a) Each share of this Series may be converted at
        any time, at the option of the holder thereof, in the manner hereinafter
        provided,  into fully-paid and  nonassessable  Common Shares,  provided,
        however,  that on any  redemption  of any  shares of this  Series or any
        liquidation of the Corporation,  the right of conversion shall terminate
        at the close of business on the full  business  day next  preceding  the
        date  fixed  for  such  redemption  or for the  payment  of any  amounts
        distributable  on  liquidation  to the  holders  of the  shares  of this
        Series.  The initial  conversion rate for shares of this Series shall be
        one  Common  Share for each one  share of this  Series  surrendered  for
        conversion,  representing an initial  conversion  price (for purposes of
        Section 7(g)) of U.S. $1.35 per share of the Corporation's Common Shares
        (hereinafter,  the "Conversion Price").  The applicable  conversion rate
        and  Conversion  Price  from  time to  time in  effect  are  subject  to
        adjustment as hereinafter provided.

               "(b) Whenever the Conversion  Price shall be adjusted as provided
        in Section 7(g) hereof,  the  Corporation  shall  forthwith file at each
        office  designated  for the  conversion of the shares of this Series,  a
        statement,  signed by any of the Chairman of the Board,  the  President,
        any Vice  President  or the  Treasurer  of the  Corporation,  showing in
        reasonable  detail the facts requiring such adjustment.  The Corporation
        shall also cause a notice setting forth any such  adjustments to be sent
        by mail, first class,  postage prepaid,  to each record holder of shares
        of this Series at his or its address appearing on the stock register. If
        such notice relates to an adjustment resulting from an event referred to
        in  paragraph  7(g)(vii),  such notice  shall be included as part of the
        notice  required  to be mailed and  published  under the  provisions  of
        paragraph 7(g)(vii) hereof.

               "(c) The right of conversion  shall be exercised by the holder by
        the surrender of the certificates  representing shares of this Series to
        be converted to the Corporation at any time during normal business hours
        at the office or agency  then  maintained  by it for the  conversion  of
        shares of this Series (the "Conversion Office"),  accompanied by written
        notice to the  Corporation of such holder's  election to convert and, if
        so required by the Corporation or any conversion agent, by an instrument
        of  transfer,  in  form  satisfactory  to  the  Corporation  and  to any
        conversion  agent,  duly  executed by the  registered  holder or by such
        holder's  duly  authorized  attorney,  and  transfer tax stamps or funds
        therefor, if required pursuant to Section 7(k).


                                      C-8
<PAGE>


               "(d)  As  promptly  as   practicable   after  the  surrender  for
        conversion of one or more  certificates  representing any shares of this
        Series in the manner provided in Section 7(c) and the payment in cash of
        any amount  required by the provisions of Section 7(k), the  Corporation
        will  deliver or cause to be delivered  at the  Conversion  Office to or
        upon the written order of the holder of such shares,  a  certificate  or
        certificates representing the number of full Common Shares issuable upon
        such conversion, issued in such name or names as such holder may direct,
        subject to any applicable contractual  restrictions and any restrictions
        imposed by applicable  securities  laws. Such conversion shall be deemed
        to have been made immediately prior to the close of business on the date
        of such surrender of certificates  representing shares of this Series in
        proper order for conversion, and all rights of the holder of such shares
        as a holder of such shares  shall cease at such time,  and the person or
        persons in whose name or names the  certificates  for such Common Shares
        are to be issued shall be treated for all purposes as having  become the
        record holder or holders thereof at such time; provided,  however,  that
        any such  surrender  on any date  when the stock  transfer  books of the
        Corporation  shall be closed shall  constitute  the person or persons in
        whose name or names the  certificates  for such Common  Shares are to be
        issued  as the  record  holder  or  holders  thereof  for  all  purposes
        immediately prior to the close of business on the next succeeding day on
        which such stock transfer books are opened.

               "(e) "Upon conversion in the manner provided in this Section 7 of
        only a portion of the number of shares of this Series  represented  by a
        certificate so surrendered for conversion,  the Corporation  shall issue
        and deliver or cause to be delivered at the Conversion Office to or upon
        the written order of the holder of the  certificate so  surrendered  for
        conversion,  at the expense of the  Corporation,  a new  certificate  or
        certificates   representing   the  number  of  shares  of  this   Series
        representing the unconverted  portion of the certificate so surrendered,
        issued in such name or names as such holder may  direct,  subject to any
        applicable  contractual  restrictions  and any  restrictions  imposed by
        applicable securities laws.

               "(f) All shares of this Series which shall have been  surrendered
        for  conversion  as  herein  provided  shall no  longer  be deemed to be
        outstanding  and all rights with respect to such shares,  including  the
        rights,  if any, to receive  notices and to vote,  shall forthwith cease
        and  terminate  except  only the right of the holder  thereof to receive
        Common  Shares  in  exchange  therefor.  Any  shares  of this  Series so
        converted  shall be retired and canceled and shall not be reissued,  and
        the  Corporation may from time to time take such  appropriate  action as
        may be  necessary  to  reduce  the  authorized  shares  of  this  Series
        accordingly.

               (g)     Anti-Dilution Provisions.

               (i) In order to prevent dilution of the right granted  hereunder,
the  Conversion  Price  shall be  subject  to  adjustment  from  time to time in
accordance with this paragraph  7(g)(i).  At any given time the Conversion Price
shall be that dollar (or part of a dollar)  amount the


                                      C-9
<PAGE>


payment of which  shall be  sufficient  at the given time to acquire  one Common
Share of the  Corporation  upon  conversion of shares of this Series.  Upon each
adjustment of the Conversion Price pursuant to this Section 7(g), the registered
holder of shares of this Series  shall  thereafter  be entitled to acquire  upon
exercise, at the Conversion Price resulting from such adjustment,  the number of
Common Shares of the Corporation  obtainable by multiplying the Conversion Price
in effect immediately prior to such adjustment by the number of shares of Common
Shares of the Corporation  acquirable  immediately  prior to such adjustment and
dividing  the  product  thereof  by the  Conversion  Price  resulting  from such
adjustment. For purposes of this Section 7(g), the term "Number of Common Shares
Deemed  Outstanding"  at any given  time shall mean the sum of (x) the number of
shares of the  Corporation's  Common Shares  outstanding  at such time,  (y) the
number of Common Shares of the Corporation  issuable assuming conversion at such
time of all outstanding shares of the Corporation's  other series of convertible
preferred  stock, if any, and (z) the number of Common Shares of the Corporation
deemed to be  outstanding at such time under  subparagraphs  7(g)(ii)(1) to (8),
inclusive.

               (ii) Except as provided in paragraph 7(g)(iii) or 7(g)(vi) below,
if and whenever on or after the Initial  Issuance  Date, the  Corporation  shall
issue or sell, or shall in accordance  with  subparagraphs  7(g)(ii)(1)  to (8),
inclusive,  be deemed to have  issued or sold (such  issuance  or sale,  whether
actual  or  deemed,  the  "Triggering  Transaction")  any  Common  Shares  for a
consideration per share less than

               (I) (if the  Common  Shares  are not traded on the New York Stock
        Exchange, the American Stock Exchange or the Nasdaq National Market) the
        Conversion  Price  in  effect  immediately  prior  to the  time  of such
        issuance  or  sale,  then  forthwith  upon  such  issuance  or sale  the
        Conversion  Price  shall,  subject to  subparagraphs  (1) to (8) of this
        Section 7(g)(ii),  be reduced to the Conversion Price (calculated to the
        nearest tenth of a cent) determined by dividing:  (i) an amount equal to
        the sum of (x) the product  derived by multiplying  the Number of Common
        Shares  Deemed   Outstanding   immediately   prior  to  such  Triggering
        Transaction  by the  Conversion  Price  then  in  effect,  plus  (y) the
        consideration, if any, received by the Company upon consummation of such
        Triggering  Transaction,  by (ii) an amount  equal to the sum of (x) the
        Number of Common Shares  Deemed  Outstanding  immediately  prior to such
        Triggering  Transaction  plus (y) the number of Common Shares issued (or
        deemed to be issued in accordance with subparagraphs 7(g)(ii)(1) to (8))
        in connection with the Triggering Transaction; or

               (II) (if the  Common  Shares  are  traded  on the New York  Stock
        Exchange, the American Stock Exchange or the Nasdaq National Market) the
        average Market Price for the ten trading days immediately preceding such
        issuance or sale, then forthwith upon such Triggering  Transaction,  the
        Conversion  Price  shall,  subject to  subparagraphs  (1) to (8) of this
        Section 7(g)(ii),  be reduced to the Conversion Price (calculated to the
        nearest tenth of a cent)  determined by multiplying the Conversion Price
        in effect  immediately prior to the time of such Triggering  Transaction
        by a fraction, the numerator of which shall be the sum of (x) the Number
        of Common Shares Deemed Outstanding immediately


                                      C-10
<PAGE>


        prior to such Triggering Transaction and (y) the number of Common Shares
        which the  aggregate  consideration  received by the  Company  upon such
        Triggering  Transaction  would  purchase at the average Market Price for
        the ten trading days immediately preceding such Triggering  Transaction,
        and the denominator of which shall be the Number of Common Shares Deemed
        Outstanding immediately after such Triggering Transaction.

               For purposes of determining the adjusted  Conversion  Price under
this paragraph 7(g)(ii), the following subsections (1) to (8), inclusive,  shall
be applicable:

                       (1) In case  the  Corporation  at any  time  shall in any
               manner  grant   (whether   directly  or  by   assumption   in  an
               amalgamation  or  otherwise)  any rights to  subscribe  for or to
               purchase,  or any options for the purchase of,  Common  Shares or
               any stock or other  securities  convertible  into or exchangeable
               for Common  Shares  (such rights or options  being herein  called
               "Options"  and  such   convertible  or   exchangeable   stock  or
               securities being herein called "Convertible Securities"), whether
               or not such  Options or the right to convert or exchange any such
               Convertible Securities are immediately exercisable, and the price
               per share for which the Common Shares are issuable upon exercise,
               conversion  or exchange  (determined  by  dividing  (x) the total
               amount,  if any,  received or  receivable by the  Corporation  as
               consideration  for  the  granting  of  such  Options,   plus  the
               aggregate  amount  of  additional  consideration  payable  to the
               Corporation  upon the exercise of all such Options,  plus, in the
               case of such Options which relate to Convertible Securities,  the
               aggregate  amount of additional  consideration,  if any,  payable
               upon the issue or sale of such  Convertible  Securities  and upon
               the  conversion  or exchange  thereof,  by (y) the total  maximum
               number  of  Common  Shares  issuable  upon the  exercise  of such
               Options  or  the  conversion  or  exchange  of  such  Convertible
               Securities) shall be less than the average Market Price in effect
               for the ten  trading  days  immediately  prior to the time of the
               granting of such  Option (if the Common  Shares are traded on the
               New York Stock  Exchange,  the  American  Stock  Exchange  or the
               Nasdaq  National  Market)  or  the  Conversion  Price  in  effect
               immediately  prior to the time of such  issuance  or sale (if the
               Common Shares are not traded on the New York Stock Exchange,  the
               American Stock Exchange or the Nasdaq National Market),  then the
               total maximum amount of Common Shares  issuable upon the exercise
               of such  Options  or,  in the  case of  Options  for  Convertible
               Securities,  upon the conversion or exchange of such  Convertible
               Securities, shall (as of the date of granting of such Options) be
               deemed to be outstanding  and to have been issued and sold by the
               Corporation  for such  price  per  share.  No  adjustment  of the
               Conversion  Price shall be made upon the actual  issuance of such
               Common Shares or such Convertible Securities upon the exercise of
               such Options,  except as otherwise  provided in subparagraph  (3)
               below.

                       (2) In case  the  Corporation  at any  time  shall in any
               manner  issue   (whether   directly  or  by   assumption   in  an
               amalgamation  or otherwise) or sell any


                                      C-11
<PAGE>


               Convertible Securities,  whether or not the rights to exchange or
               convert thereunder are immediately exercisable, and the price per
               share for which Common Shares are issuable  upon such  conversion
               or exchange (determined by dividing (x) the total amount received
               or receivable by the Corporation as  consideration  for the issue
               or sale of such Convertible Securities, plus the aggregate amount
               of additional  consideration,  if any, payable to the Corporation
               upon the conversion or exchange thereof, by (y) the total maximum
               number of Common Shares  issuable upon the conversion or exchange
               of all  such  Convertible  Securities)  shall  be less  than  the
               average  Market  Price in effect for the ten-day  trading  period
               immediately  prior  to the  time of such  issue  or sale  (if the
               Common  Shares  are traded on the New York  Stock  Exchange,  the
               American  Stock  Exchange or the Nasdaq  National  Market) or the
               Conversion Price in effect  immediately prior to the time of such
               issuance or sale (if the Common  Shares are not traded on the New
               York Stock  Exchange,  the American  Stock Exchange or the Nasdaq
               National Market),  then the total maximum number of Common Shares
               issuable  upon  conversion  or exchange  of all such  Convertible
               Securities  shall  (as of the  date of the  issue or sale of such
               Convertible  Securities) be deemed to be outstanding  and to have
               been issued and sold by the Corporation for such price per share.
               No  adjustment  of the  Conversion  Price  shall be made upon the
               actual issuance of such Common Shares upon exercise of the rights
               to exchange or convert under such Convertible Securities,  except
               as otherwise provided in subparagraph (3) below.

                       (3) If the  purchase  price  provided  for in any Options
               referred to in subparagraph (1), the additional consideration, if
               any,  payable upon the conversion or exchange of any  Convertible
               Securities  referred to in subparagraphs  (1) or (2), or the rate
               at which any Convertible  Securities  referred to in subparagraph
               (1) or (2) are convertible into or exchangeable for Common Shares
               shall  change  at any time  (other  than  under or by  reason  of
               provisions  designed to protect against  dilution of the type set
               forth in paragraphs  7(g)(ii) or 7(g)(iv)),  the Conversion Price
               in  effect  at  the  time  of  such  change  shall  forthwith  be
               readjusted  to the  Conversion  Price  which  would  have been in
               effect at such time had such  Options or  Convertible  Securities
               still  outstanding  provided  for such  changed  purchase  price,
               additional consideration or rate, as the case may be, at the time
               initially granted, issued or sold. If the purchase price provided
               for in any Option referred to in subparagraph  (1) or the rate at
               which any Convertible Securities referred to in subparagraphs (1)
               or (2) are convertible  into or  exchangeable  for Common Shares,
               shall be  reduced  at any time  under or by reason of  provisions
               with respect thereto designed to protect against  dilution,  then
               in case of the delivery of Common Shares upon the exercise of any
               such  Option  or  upon   conversion   or  exchange  of  any  such
               Convertible  Security,   the  Conversion  Price  then  in  effect
               hereunder shall  forthwith be adjusted to such respective  amount
               as would  have  been  obtained  had such  Option  or  Convertible
               Security  never  been  issued as to such  Common  Shares  and had
               adjustments  been made upon the  issuance  of the



                                      C-12
<PAGE>

               Common Shares delivered as aforesaid,  but only if as a result of
               such adjustment the Conversion  Price then in effect hereunder is
               hereby reduced.

                       (4) On the expiration of any Option or the termination of
               any right to convert or exchange any Convertible Securities,  the
               Conversion  Price then in effect  hereunder  shall  forthwith  be
               increased to the Conversion Price which would have been in effect
               at the time of such  expiration or termination had such Option or
               Convertible  Securities,  to the extent  outstanding  immediately
               prior to such expiration or termination, never been issued.

                       (5) In case any  Options  shall be issued  in  connection
               with the issue or sale of other  securities  of the  Corporation,
               together comprising one integral transaction in which no specific
               consideration  is  allocated  to  such  Options  by  the  parties
               thereto, such Options shall be deemed to have been issued without
               consideration.

                       (6) In case any Common  Shares,  Options  or  Convertible
               Securities  shall be issued or sold or deemed to have been issued
               or sold for cash, the  consideration  received  therefor shall be
               deemed to be the  amount  received  by the  Corporation  therefor
               (before  deduction  for  expenses or  underwriters'  discounts or
               commissions  related to such  issue or sale).  In case any Common
               Shares, Options or Convertible Securities shall be issued or sold
               for  a   consideration   other  than  cash,  the  amount  of  the
               consideration  other than cash received by the Corporation  shall
               be the fair value of such  consideration  as  determined  in good
               faith by the Board of Directors of the Corporation.

                       (7) In case the  Corporation  shall declare a dividend or
               make  any  other  distribution  upon  the  share  capital  of the
               Corporation  payable in Common  Shares,  Options,  or Convertible
               Securities,  then in such  case any  Common  Shares,  Options  or
               Convertible  Securities,  as the case may be, issuable in payment
               of such  dividend  or  distribution  shall be deemed to have been
               issued or sold without consideration.

                       (8) For purposes of this paragraph 7(g)(ii),  in case the
               Corporation  shall  take a record of the  holders  of its  Common
               Shares  for the  purpose  of  entitling  them  (x) to  receive  a
               dividend or other distribution payable in Common Shares,  Options
               or in Convertible Securities, or (y) to subscribe for or purchase
               Common  Shares,  Options  or  Convertible  Securities,  then such
               record  date  shall be deemed to be the date of the issue or sale
               of the Common  Shares deemed to have been issued or sold upon the
               declaration  of  such  dividend  or  the  making  of  such  other
               distribution  or the  date  of the  granting  of  such  right  or
               subscription or purchase, as the case may be.


                                      C-13
<PAGE>

               (iii) In the event the Corporation  shall declare a dividend upon
the Common  Shares (other than a dividend  payable in Common  Shares  covered by
subparagraph  7(g)(ii)(7))  payable  otherwise  than out of  earnings  or earned
surplus, determined in accordance with generally accepted accounting principles,
including the making of appropriate  deductions for minority interests,  if any,
in subsidiaries (herein referred to as "Liquidating  Dividends"),  then, as soon
as possible after the conversion of any shares of this Series,  the  Corporation
shall,  subject to applicable  law, pay to the person  converting such shares of
this Series an amount equal to the aggregate  value at the time of such exercise
of all  Liquidating  Dividends  (including  but not limited to the Common Shares
which would have been issued at the time of such earlier  exercise and all other
securities  which would have been issued with  respect to such Common  Shares by
reason of stock splits,  stock dividends,  amalgamations or reorganizations,  or
for any other reason). For the purposes of this paragraph 7(g)(iii),  a dividend
other than in cash shall be considered payable out of earnings or earned surplus
only to the extent that such  earnings  or earned  surplus are charged an amount
equal to the fair  value of such  dividend  as  determined  in good faith by the
Board.

               (iv) In case the Corporation  shall at any time subdivide  (other
than by means of a  dividend  payable  in Common  Shares  covered  by  paragraph
7(g)(ii)(7)) its outstanding  Common Shares into a greater number of shares, the
Conversion  Price  in  effect  immediately  prior to such  subdivision  shall be
proportionately reduced, and, conversely,  in case the outstanding Common Shares
of the  Corporation  shall be  combined  into a smaller  number of  shares,  the
Conversion  Price  in  effect  immediately  prior to such  combination  shall be
proportionately increased.

               (v) If any  capital  reorganization  or  reclassification  of the
share  capital of the  Corporation,  or  amalgamation  of the  Corporation  with
another  corporation,  or the sale of all or substantially  all of its assets to
another  corporation  shall be  effected  in such a way that  holders  of Common
Shares shall be entitled to receive  stock,  securities,  cash or other property
with respect to or in exchange for Common  Shares,  then, as a condition of such
reorganization,  reclassification,  amalgamation  or sale,  lawful and  adequate
provision  shall be made whereby the holders of shares of this Series shall have
the right to acquire and receive upon  conversion  of the shares of this Series,
which  right  shall be prior to the rights of the  holders  of stock  ranking on
liquidation  junior to this  Series  (but  after and  subject  to the  rights of
holders of Senior Preferred Shares,  if any), such shares of stock,  securities,
cash or other  property  issuable  or  payable  (as part of the  reorganization,
reclassification,  amalgamation or sale) with respect to or in exchange for such
number of  outstanding  Common  Shares  of the  Corporation  as would  have been
received upon  conversion of the shares of this Series at the  Conversion  Price
then in effect.  The Corporation will not effect any such  amalgamation or sale,
unless prior to the  consummation  thereof the  amalgamated  corporation  or the
corporation  purchasing such assets shall assume by written instrument mailed or
delivered  to the  holders of the shares of this  Series at the last  address of
each such holder  appearing on the books of the  Corporation,  the obligation to
deliver to each such holder such  shares of stock,  securities  or assets as, in
accordance  with the  foregoing  provisions,  such  holder  may be  entitled  to
receive. If a purchase,  tender or exchange offer is



                                      C-14
<PAGE>

made to and accepted by the holders of more than 50% of the  outstanding  Common
Shares of the Corporation,  the Corporation shall not effect any amalgamation or
sale with the person  having made such offer or with any  Affiliate  (as defined
below) of such person,  unless prior to the consummation of such amalgamation or
sale the holders of the shares of this Series shall have been given a reasonable
opportunity  to then elect to receive upon the  conversion of the shares of this
Series either the stock,  securities or assets then issuable with respect to the
Common Shares of the  Corporation  or the stock,  securities  or assets,  or the
equivalent,  issued to previous  holders of the Common Shares in accordance with
such offer. For purposes hereof,  the term "Affiliate" with respect to any given
person shall mean any person controlling,  controlled by or under common control
with the given person.

               (vi) The  provisions  of this Section 7(g) shall not apply to any
Common  Shares  issued,  issuable  or  deemed  outstanding  under  subparagraphs
7(g)(ii)(1)  to (8) inclusive:  (i) to any person  pursuant to any stock option,
stock  purchase or similar plan or  arrangement  for the benefit of employees of
the Corporation or its  subsidiaries  in effect on the Initial  Issuance Date or
thereafter  adopted by the Board of Directors of the Corporation,  (ii) pursuant
to options,  warrants and conversion rights in existence on the Initial Issuance
Date,  (iii) upon exercise of the warrants of the Corporation  issued to Warburg
pursuant to the Warrant  Agreement or (iv) on  conversion  of the shares of this
Series or the sale of any additional shares of this Series.

               (vii) In the event that:

               (1) the  Corporation  shall  declare any cash  dividend  upon its
        Common Shares, or

               (2) the  Corporation  shall  declare any dividend upon its Common
        Shares  payable  in  stock  or  make  any  special   dividend  or  other
        distribution to the holders of its Common Shares, or

               (3) the Corporation  shall offer for subscription pro rata to the
        holders of its Common Shares any additional shares of stock of any class
        or other rights, or

               (4) there shall be any capital reorganization or reclassification
        of the share capital of the  Corporation,  including any  subdivision or
        combination of its  outstanding  Common Shares,  or  amalgamation of the
        Corporation  with, or sale of all or substantially all of its assets to,
        another corporation, or

               (5)  there  shall  be a  voluntary  or  involuntary  dissolution,
        liquidation or winding up of the Corporation;

then, in connection with such event,  the Corporation  shall give to the holders
of the shares of this Series:

                                      C-15
<PAGE>

               (A)     at least  twenty (20) days' prior  written  notice of the
                       date on which the books of the Corporation shall close or
                       a record shall be taken for such  dividend,  distribution
                       or subscription  rights or for determining rights to vote
                       in respect of any such reorganization,  reclassification,
                       amalgamation,  sale, dissolution,  liquidation or winding
                       up; and

               (B)     in the case of any such reorganization, reclassification,
                       amalgamation,  sale, dissolution,  liquidation or winding
                       up, at least  twenty (20) days' prior  written  notice of
                       the date when the same shall take place.

Such notice in accordance with the foregoing  clause (A) shall also specify,  in
the case of any such dividend,  distribution or subscription rights, the date on
which the holders of Common Shares shall be entitled thereto, and such notice in
accordance  with the  foregoing  clause (B) shall also specify the date on which
the holders of Common  Shares shall be entitled to exchange  their Common Shares
for  securities  or  other  property   deliverable  upon  such   reorganization,
reclassification, amalgamation, sale, dissolution, liquidation or winding up, as
the case may be. Each such  written  notice  shall be given by first class mail,
postage  prepaid,  addressed  to the holders of the shares of this Series at the
address of each such holder as shown on the books of the Corporation.

               (viii)  If at any  time or from  time  to  time on or  after  the
Initial Issuance Date, the Corporation  shall grant,  issue or sell any Options,
Convertible  Securities or rights to purchase  property (the "Purchase  Rights")
pro rata to the record holders of the Common Shares of the  Corporation and such
grants,  issuances  or sales do not result in an  adjustment  of the  Conversion
Price under paragraph 7(g)(ii) hereof, then each holder of shares of this Series
shall be entitled to acquire  (within  thirty (30) days after the later to occur
of the initial  exercise date of such Purchase  Rights or receipt by such holder
of the notice concerning  Purchase Rights to which such holder shall be entitled
under paragraph 7(g)(vii)) and upon the terms applicable to such Purchase Rights
either:

               (A)     the  aggregate  Purchase  Rights  which such holder could
                       have  acquired if it had held the number of Common Shares
                       acquirable  upon  conversion  of  shares  of this  Series
                       immediately  before the grant,  issuance  or sale of such
                       Purchase  Rights;  provided  that if any Purchase  Rights
                       were  distributed to holders of Common Shares without the
                       payment  of  additional  consideration  by such  holders,
                       corresponding Purchase Rights shall be distributed to the
                       exercising  holders of the shares of this  Series as soon
                       as  possible  after  such  exercise  and it shall  not be
                       necessary for the exercising holder of the shares of this
                       Series  specifically to request  delivery of such rights;
                       or

               (B)     in the event  that any such  Purchase  Rights  shall have
                       expired or shall  expire  prior to the end of said thirty
                       (30) day  period,  the  number  of  Common  Shares or the
                       amount of property  which such holder could have


                                      C-16
<PAGE>


                       acquired upon such exercise at the time or times at which
                       the  Corporation  granted,  issued or sold  such  expired
                       Purchase Rights.

               (ix) If any  event  occurs  as to which,  in the  opinion  of the
Board,  the  provisions  of this Section 7(g) are not strictly  applicable or if
strictly  applicable  would not fairly  protect the rights of the holders of the
shares of this Series in accordance with the essential  intent and principles of
such  provisions,  then the Board shall make an adjustment in the application of
such provisions,  in accordance with such essential intent and principles, so as
to protect such rights as aforesaid,  but in no event shall any adjustment  have
the effect of increasing the Conversion Price as otherwise  determined  pursuant
to  any of the  provisions  of  this  Section  7(g)  except  in  the  case  of a
combination of shares of a type  contemplated in paragraph  7(g)(iv) and then in
no event to an amount larger than the Conversion  Price as adjusted  pursuant to
paragraph 7(g)(iv).

               "(h) No  fractional  Common  Shares  shall  be  issued  upon  the
        conversion  of any  share or shares of this  Series.  If any  fractional
        interest in a Common  Share  would,  except for the  provisions  of this
        Section 7(h), be deliverable  upon the conversion of any share or shares
        of  this  Series,  the  Corporation  shall  in lieu  of  delivering  the
        fractional  Common Share therefor  satisfy such  fractional  interest by
        payment to the holder of such surrendered share or shares of this Series
        of an amount in cash equal (computed to the nearest cent) to the current
        market value of such fractional  interest,  computed on the basis of the
        Market  Price  of the  Common  Shares  on the  date of such  conversion,
        provided,  however,  that no amount shall be paid by the  Corporation to
        such holder of less than U.S. $5.00.

               "(i) The  Corporation  shall be entitled to effect the  mandatory
        conversion,  in  whole or in  part,  of the  shares  of this  Series  in
        accordance with this Section 7 if all of the Triggering  Conditions (set
        forth in Section 2(b) hereof)  shall have been  satisfied as of the date
        of the notice  described  below.  Upon such mandatory  conversion,  each
        share of this Series subject to such conversion  shall be converted into
        Common Shares at the then effective Conversion Price for such shares. In
        case the  Corporation  shall desire to exercise the right to convert all
        or, as the case may be, any shares of this Series in accordance with the
        right to do so, it shall provide  notice to the holders of the shares of
        this Series to be  converted  as  hereinafter  provided in this  Section
        7(i).

                       "(i) A notice of conversion shall be given to the holders
        of shares of this Series to be converted by mailing by first-class  mail
        to their last  addresses  as they shall  appear  upon the  register  for
        shares of this Series not less than 120 calendar  days prior to the date
        fixed for conversion.

                       "(ii) Each such notice of  conversion  (A) shall  specify
        the date fixed for conversion  and the number of Common Shares  issuable
        to the holder of a share of this Series upon such conversion,  (B) shall
        state the offices or agencies to be  maintained by the  Corporation  for
        the purpose of such conversion,  upon presentation and surrender of such
        shares of this Series and (C) if less than all the shares of this Series
        are to be


                                      C-17
<PAGE>


        converted,  shall  specify  the number of shares of this  Series held by
        each holder, and the serial numbers of the certificates  thereof,  to be
        converted. In case any certificate representing shares of this Series is
        to be converted in part only, the notice of conversion  which relates to
        such  certificate  shall  state the  number  of  shares  of this  Series
        represented by such  certificate to be converted and shall state that on
        and after the conversion date, upon surrender of such certificate, a new
        certificate or certificates  for a number of shares of this Series equal
        to the unconverted portion thereof will be issued.

               "(j)  The  Corporation   will  at  all  times  reserve  and  keep
        available, solely for the purposes of the issuance of Common Shares upon
        conversion  of the  shares  of this  Series,  the full  number of Common
        Shares as shall be issuable upon the conversion of all such  outstanding
        shares of this Series.

               "The Corporation will endeavor to comply with all securities laws
        regulating  the offer and delivery of Common  Shares upon  conversion of
        the shares of this Series and, that if any Common Shares  required to be
        reserved  for purposes of  conversion  of the shares  hereunder  require
        registration  with or approval of any  governmental  authority under any
        U.S. (federal or state) or Canadian law before such Common Shares may be
        validly issued or delivered upon  conversion,  the Corporation  will, in
        good faith and as  expeditiously  as  possible,  endeavor to secure such
        registration or approval, as the case may be.

               "All Common  Shares which shall be issued upon  conversion of the
        shares of this Series will upon issuance be fully paid and nonassessable
        and not subject to preemptive rights.

               "(k)  The  issuance  of  certificates   for  Common  Shares  upon
        conversion of shares of this Series shall be made without charge for any
        stamp or other similar tax in respect of such issuance.  However, if any
        such certificate is to be issued in a name other than that of the holder
        of record of the share or shares of this Series so converted, the holder
        thereof shall pay to the  Corporation the amount of any tax which may be
        payable in respect of any  transfer  involved in such  issuance or shall
        establish to the  satisfaction of the Corporation that such tax has been
        paid or is not payable.

               "(l) In case (A) the  Corporation  shall  take any  action  which
        would require an  adjustment in the number of Common Shares  issuable to
        holders of shares of this Series  upon  conversion  thereof  pursuant to
        Section  7(g) above;  or (B) there shall be a voluntary  or  involuntary
        dissolution,   liquidation   or  winding  up  of  the   affairs  of  the
        Corporation;

        then the  Corporation  shall  cause to be  given to the  holders  of the
        shares of this Series at least ten days prior to the  applicable  record
        date hereinafter  specified,  a notice of (X) the date on which a record
        is to be taken for the purpose of any dividend, distribution or grant to
        holders of Common Shares which would require such an adjustment,  or, if
        a

                                      C-18
<PAGE>

        record is not to be taken,  the date as of which the  holders  of Common
        Shares of record to be entitled to such dividend, distribution, or grant
        are to be  determined  or (Y) the  date on  which  such  reorganization,
        reclassification, amalgamation, sale, transfer, dissolution, liquidation
        or winding up is expected to become effective,  and the date as of which
        it is expected that holders of Common Shares of record shall be entitled
        to exchange  their Common  Shares for  securities  or other  property or
        other assets  deliverable  upon such  reorganization,  reclassification,
        amalgamation,  sale, transfer, dissolution,  liquidation, or winding up.
        Failure to give such notice or any defect  therein  shall not affect the
        legality or validity of any proceedings  described in subparagraphs  (A)
        or (B) of this Section 7(l).

               "8. Hold  Period.  A holder of shares of this Series  shall in no
event sell or otherwise transfer any of the shares of this Series, or any Common
Shares issued upon the due conversion of any shares of this Series, for a period
of six months from the Initial  Issuance  Date. The  Corporation  shall issue or
cause to be  issued  certificates  representing  shares of this  Series,  and of
Common  Shares issued upon due  conversion  of any shares of this Series,  which
contain such legends as the  Corporation  in its  discretion  deems  adequate to
reflect the hold period described in this Section 8.

               "9.     Miscellaneous.

               "(a)    For the purposes hereof:

                       "(i) the term  "outstanding",  when used in  reference to
               shares of this Series,  shall mean issued  shares of this Series,
               excluding shares of this Series called for redemption; and

                       "(ii)  the term  "subsidiary"  shall  mean any  company a
               majority of whose  outstanding  voting  capital stock (other than
               directors'  qualifying  shares),  at the  time  as of  which  any
               determination is being made, shall be owned by the parent of such
               company either directly or through other subsidiaries; and

                       "(iii)  any  shares of a series or class of shares of the
               Corporation shall be deemed to rank:

                              "(A)  prior to shares of this  Series,  whether or
                       not  the  dividend  rates,   dividend  payment  dates  or
                       redemption  or  liquidation  prices per share  thereof be
                       different  from  those of shares of this  Series,  if the
                       holders  of such  shares  of a series  or class of shares
                       shall be  entitled  to receipt  from the  Corporation  of
                       dividends or of amounts  distributable  upon liquidation,
                       dissolution  or winding up, in  preference or priority to
                       the holders of shares of this Series, as the case may be;


                                      C-19
<PAGE>

                              "(B) on a parity  with or equal to  shares of this
                       Series,  whether  or not  the  dividend  rates,  dividend
                       payment  dates or redemption  or  liquidation  prices per
                       share  thereof be different  from those of shares of this
                       Series,  if the  holders  of such  shares  of a series or
                       class of shares shall be entitled to the receipt from the
                       Corporation of dividends or of amounts distributable upon
                       liquidation  to  their   respective   dividend  rates  or
                       liquidation  prices,  without  preference or priority one
                       over the other as between the holders of such shares of a
                       series or class of shares  and the  holders  of shares of
                       this Series; and

                              "(C) subordinate to shares of this Series, whether
                       or not the  dividend  rates,  dividend  payment  dates or
                       redemption  or  liquidation  prices per share  thereof be
                       different  from  those of shares of this  Series,  if the
                       rights of the holders of such shares of a series or class
                       of  shares  shall be  subordinate  to the  rights  of the
                       holders  of  shares  of this  Series  in  respect  of the
                       receipt from the  Corporation of dividends and of amounts
                       distributable  upon  liquidation,  dissolution or winding
                       up, including,  without limitation,  the Common Shares of
                       the Corporation.

               "(b) So long as any shares of this Series are outstanding, in the
        event of any conflict  between the  provisions  hereof and any corporate
        document of the  Corporation  (both as  presently  existing or hereafter
        amended and  supplemented)  the  provisions  hereof,  as the same may be
        amended or supplemented, shall be and remain controlling.

               "(c) The  holders  of the  shares of this  Series  shall  have no
        preemptive rights.


        SECOND: That such determination of the designation,  powers, preferences
and  the  relative   participating,   optional  and  other  special  rights  and
qualifications,  limitations and restrictions  thereof relating to such Series A
Convertible  Preferred  Shares  was duly made by the Board of  Directors  of the
Corporation  in  accordance  with the  provisions  of Section 27 of the Business
Corporations Act (Alberta).


                                      C-20
<PAGE>


        IN WITNESS  WHEREOF,  this  Certificate has been signed by the President
and the Secretary of HealthCare Capital Corp, and the Corporation has caused its
corporate seal to be hereunto affixed, all as of the ---- day of January, 1998.


                                        HEALTHCARE CAPITAL CORP.



                                        By:
                                             Brandon M. Dawson
                                             Title:  President


[Corporate Seal]



Attest:



- ----------------------------------
William DeJong
Secretary




                                      C-21


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