Document:

<PAGE>
                                                                Exhibit 4(a)(ii)

                              POTLATCH CORPORATION

                              OFFICERS CERTIFICATE

         We, GEORGE E. PFAUTSCH, Senior Vice President, Finance, and SANDRA T.
POWELL, Treasurer, of Potlatch Corporation, a Delaware corporation (the
"Company"), do hereby certify in accordance with Section 301 of the Indenture,
dated as of November 27, 1990 (the "Indenture"), between the Company and Bankers
Trust Company of California, National Association, as trustee (the "Trustee"),
that, pursuant to resolutions adopted by the Finance Committee of the Board of
Directors of the Company on December 12, 1991, the terms of a second series of
debt securities of the Company under the Indenture are as follows:

         1. The title of the series of securities
   shall be "Medium-Term Notes Due from 9 Months to
   30 Years from Date of Issue" (the "Notes");

         2. The limit on the aggregate principal amount of the Notes which may
   be authenticated And delivered under the Indenture shall be U.S. $100,000,000
   (except for Notes authenticated and delivered upon registration of, transfer
   of, or in exchange of, or in lieu of, other Notes pursuant to Sections 304,
   305, 306, 906, 1107 and 1305 of the Indenture);

         3. The price of the Notes will be set forth in the applicable Pricing
   Supplement in the form attached hereto as Exhibit A (the "Pricing
   Supplement") and the date on which the principal (and premium, if any) of
   each of the Notes is payable shall be any Business Day (as defined in the
   Indenture) from nine months to thirty years from its date of issue, as
   selected by the initial purchaser of the Notes and agreed to and established
   on behalf of the Company by any of the Chairman of the Board and Chief
   Executive Officer, the President, the Senior Vice President, Finance, or the
   Treasurer (the "Authorized Officers"), from time to time, as evidenced by the
   settlement instructions in the form attached hereto as Exhibit B which shall
   be provided to the Trustee in connection with a request to authenticate such
   securities pursuant to a Company Order, as such term is defined in the
   Indenture (the Settlement Instructions and the Company Order being herein
   referred to collectively as "Settlement Instructions");

         4. The interest on the Notes shall be payable only at a fixed coupon
   rate, such rate to be selected by the initial purchasers of the Notes and
   agreed to and established on behalf of the Corporation by an Authorized
   Officer, from time to

                                     Page 1

<PAGE>

   time, as evidenced by the Settlement Instructions; provided, however, that
   the interest rate shall not exceed a fixed coupon rate of eight and one-
   quarter percent per annum for Notes issued with maturities of up to ten years
   and shall not exceed a fixed coupon rate of nine and one-quarter percent per
   annum for Notes issued with maturities of ten years or longer. The Interest
   Payment Dates and the Regular Record Dates for the interest payable on any
   Interest Payment Date shall be set forth in the Prospectus Supplement
   relating to the Notes dated December 12, 1991 (the "Prospectus Supplement");

         5. The principal of (and premium, if any) and interest on the Notes
   shall be payable, Notes may be surrendered for registration of transfer,
   Notes may be surrendered for exchange, and notices and demands to or upon the
   Company in respect of the Notes and the Indenture may be served, at the
   office or agency of the Company which will initially be the office of the
   agent of the Trustee at Bankers Trust Company, 4 Albany Street, New York, New
   York 10015, or at such other places as the Company may designate;

         6. The obligation, if any, of the Company to redeem or purchase the
   Notes pursuant to any sinking fund or analogous provisions and the period or
   periods within which, the price or prices at which and the terms and
   conditions upon which the Notes shall be redeemed or purchased, in whole or
   in part, pursuant to such obligation will be set forth in the Settlement
   Instructions;

         7. The period or periods within which, the price or prices at which and
   the terms and conditions upon which the Notes may be repaid, in whole or in
   part, at the option of the Holders will be set forth in the Settlement
   Instructions;

         8. The right, if any, of the Company to execute and deliver to the
   Trustee, and to direct the Trustee to authenticate and deliver in accordance
   with a Company Order, a security of any series in lieu of or in exchange for
   the Notes cancelled upon redemption or repayment will be set forth in the
   Settlement Instructions;

         9. The Notes will be issuable only in denominations of U.S. $100,000
   and integral multiples of U.S. $1,000 in excess thereof unless otherwise set
   forth in the Settlement Instructions;

         10. The portion of the principal amount of the Notes, if other than the
   principal amount thereof, which shall be payable upon declaration of
   acceleration of the Maturity thereof pursuant to Section 502 of the Indenture
   will be set forth

                                     Page 2

<PAGE>

   in the Settlement Instructions;

      11. The Notes are to be issuable as Registered Securities, without coupons
   in permanent global form. Beneficial owners of interests in any such
   permanent Global Security may exchange such interests for securities of such
   series and of like tenor under the circumstances set forth in the Prospectus
   Supplement;

      12. Whether and under what circumstances the Company will pay additional
   amounts on Notes held by a person who is not a U.S. Person, as defined in the
   Indenture, in respect of taxes or similar charges withheld or deducted and,
   whether the Company will have the option to redeem such Notes rather than pay
   such additional amounts will be set forth in the Settlement Instructions;

      13. If the amount of payments of principal of (and premium, if any) or
   interest on the Notes may be determined with reference to an index, the
   manner in which such amounts shall be determined shall be set forth in the
   Settlement Instructions;

      14. The Notes shall be in substantially the form attached hereto as
   Exhibit C.

      15. The extent to which, or the manner in which, any interest payable
   on a temporary or permanent Global Security on an Interest Payment Date will
   be paid will be set forth in the Prospectus Supplement;

                                     Page 3

<PAGE>
      16. Any other terms, conditions and rights of the Notes will be set
   forth in the Settlement Instructions.

         IN WITNESS WHEREOF, we have hereunto signed our names this 12th day of
   December, 1991.

                                        /s/ George E. Pfautsch
                                        ----------------------
                                        George E. Pfautsch
                                        Senior Vice President,
                                        Finance

                                        /s/ Sandra T. Powell
                                        ----------------------
                                        Sandra T. Powell
                                        Treasurer

                                     Page 4

<PAGE>

                                                             Exhibit A
Pricing Supplement No.                              Filing under Rule 424(b)(3)
Dated                                             Registration File No. 33-37910

(To Prospectus dated December 11, 1990
and Prospectus Supplement dated
December 12, 1991)

                                 $100,000,000
                             POTLATCH CORPORATION
                              Medium-Term Notes
                 Due from 9 Months to 30 Years from Date of Issue
<TABLE>
<CAPTION>

<S>                                              <C>
Principal Amount:                                Floating Rate Notes:
Interest Rate (if fixed rate):                     Interest rate basis:
Stated Maturity:                                       _ Commercial Paper Rate
Specified Currency:                              _ Prime Rate
Applicable Exchange Rate (if any):                   _ LIBOR
   U.S.$1.00 =                                   _ Treasury Rate
Issue price (as a percentage
  of principal amount):                          _ CD Rate
Form:                                            _ Federal Funds Rate
         Book - Entry                                    _    Other
 Certificated _                                  Index Maturity:
Selling Agent's commission (%):                  Spread:
Purchasing Agent's discount or commission (%):   Spread Multiplier:
Net proceeds to the Company (%):                     Maximum Rate:
Settlement date (original issue date):               Minimum Rate:
Redemption Commencement Date (if any):             Initial Interest Rate:
                                                                 Interest Reset Date(s):
                                                 Interest Determination Date(s):
                                                                 Calculation Date(s):
                                                 Interest Payment Date(s):
                                                                 Regular Record Date(s):
</TABLE>

         Redemption price (if any):
The Redemption Price shall initially be   % of the pricipal amount of such Notes
to be redeemed and shall decline (but not below par) on each anniversary of the
date of original issuance by  % of the principal amount to be redeemed until the
Redemption Price is 100% of such principal amount.

     If such Notes are denominated in other than U.S. dollars, the applicable
Foreign Currency Supplement is attached hereto.

     Additional terms:

     As of the date of this Pricing Supplement, the aggregate initial public
offering price (or its equivalent in other currencies) of the Debt Securities
(as defined in the Prospectus) which have been sold (including the Notes to
which this Pricing Supplement relates) is $ .

     "N/A" as used herein means "Not Applicable." "A/S" as used herein means "As
stated in the Prospectus Supplement referred to above."

Goldman, Sachs & Co.                                        Salomon Brothers Inc

                                     Page 5

<PAGE>

                                                                       Exhibit B

                    (To be delivered to Bankers Trust Company
                    as Authenticating Agent for the Trustee)

                              POTLATCH CORPORATION

                                Medium-Term Notes
                Due from 9 Months to 30 Years from Date of Issue

                             Settlement Instructions

1. Exact name in which the Note is to be registered ("registered owner"):

2. Exact address of registered owner and, if different, the address for
   delivery, notices and payment of principal and interest:

3. TIN of registered owner:

4. Principal amount of Note in authorized denominations to be delivered to the
   registered owner:

5. Interest rate of Note:

   A. In the case of a Fixed Rate Note, the Interest
         Rate and the initial Interest Payment Date:

   B. In the case of a Floating Rate Note:

      1. Base Rate:
      2. Initial Interest Rate (if available):
      3. Interest Reset Dates:
      4. Interest Payment Dates:
      5. Regular Record Dates:
      6. Interest Determination Dates:
      7. Index Maturity:
      8. Maturity:
      9. Maximum Interest Rate (if any):
     10. Minimum Interest Rate (if any):
     11. Spread or Spread Multiplier (if any):
     12. Calculation Agent:

6. Stated Maturity:

7. Redemption provisions, if any, including, as applicable:

   A. Redemption Commencement Date:

   B. Initial Redemption Price (% of par):

   C. Amount (% of par) that the Redemption Price shall decline (but not below
      par) on each anniversary of the Redemption Commencement Date:

   D. Other:

8. If an Original Issue Discount Note, the total amount of Original Issue
   Discount, the yield to Maturity and the initial accrual period of original
   issue discount:

9. Settlement Date (Issue Date):

10. Specified Currency and, if the Specified Currency is

                                      -1-

<PAGE>

    other than U.S. dollars, the applicable Exchange Rate for such Specified
    Currency:

11. Indexed Currency, the Base Rate and the Exchange Rate Determination Date, if
    applicable:

12. Presenting Agent's Commission (to be paid in the form of a discount from the
    proceeds remitted to the Issuer upon settlement):

13. Presenting Agent:

14. Issue Price:

15. Net Proceeds to the Company:

16. Trade Date:

17. Wire transfer information:

18. Additional terms:

         Potlatch Corporation (the "Company") represents and warrants that (i)
the above-mentioned terms of the Notes have been determined in accordance with
the resolutions of the Board of Directors of the Company dated September 21,
1990, and the resolutions of the Finance Committee of the Company dated December
12, 1991 and the Officers' Certificate dated ____________,_________ ; and (ii)
the aggregate principal amount of all Notes heretofore authenticated (prior to
giving effect to any authentication of the Notes herein requested to be
authenticated) is $_______________.

                                    POTLATCH CORPORATION

                                    By____________________
                                      Its_________________

CC: Bankers Trust Company of California,
    National Association

                                      -2-

<PAGE>

                                                                       Exhibit C

                           (Form of Fixed-Rate Note)
                                 (Form of Face)

"UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY ("DEPOSITARY") (55 WATER STREET, NEW YORk, NEW YORK) TO
THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND
ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER
NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITARY AND ANY
PAYMENT IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

THIS CERTIFICATE MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY OR
BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE
DEPOSITARY OR A SUCCESSOR OF THE DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR."

REGISTERED                                                        REGISTERED

                            POTLATCH CORPORATION
      MEDIUM-TERM NOTES DUE FROM 9 MONTHS TO 30 YEARS FROM DATE OF ISSUE
<TABLE>
<CAPTION>

                                                        CUSIP:

<S>                                                           <C>
Registered No:                         Principal Amount: U.S. $

Interest

Payment Dates:                         Regular Record Dates:

Issue Date:                            Interest Rate:

Stated Maturity:

Repayment Terms:                       Redemption Terms:
         Repayment Dates:                   Redemption Commencement Date:
         Repayment Prices:                  Initial Redemption Price:
                                            Reduction Percentages:   %
</TABLE>

Other Terms:

         POTLATCH CORPORATION, a Delaware corporation (the "Company"), which
term includes any successor corporation under the Indenture hereinafter referred
to, for value received, hereby promises to pay to
, or its registered assigns, the Principal Amount specified above on the Stated
Maturity date specified above (unless earlier redeemed or repaid), and to pay
interest on such Principal Amount at the per annum Interest Rate specified above
on each succeeding Interest Payment Date (as defined below) until payment of
said principal sum has been made or made available for payment; provided,
however, if the Issue Date is after the Regular Record Date (as defined below)
and before the next succeeding Interest Payment Date, then interest hereon shall
be paid on the Interest Payment Date following the next succeeding Regular
Record Date. Interest hereon shall accrue from the Issue Date or from the most
recent Interest Payment Date to which interest has been paid or duly provided
for. The term "Interest Payment Date" for any regular payment of interest shall
mean June 1, December 1 and any date fixed for redemption or repayment pursuant
to the Indenture (as defined below) and this Security (the "Redemption Date")
and the Stated Maturity. The term "Regular Record Date" for any regular payment
of interest, other than any Redemption Date or the Stated Maturity, shall mean
the May 15 or November 15 next preceding such June 1 or December 1 (whether or
not a Business Day), as the case may be. The interest so payable, and punctually
paid or duly provided for, on any Interest Payment Date will, as provided in the
Indenture, be paid to the Person in whose name this Security (or a predecessor
security in exchange for or transfer of which this Security was issued between
the Regular Record Date for such interest and the Interest Payment Date) is
registered at the close of business on the Regular Record Date for such
interest. Interest payable at the Stated Maturity or Redemption Date shall be
paid to the Person to whom the Principal Amount is paid. Interest shall be
calculated on the basis of a 360-day year of twelve 30-day months. Any such
interest not so punctually paid or duly provided for shall be payable as
provided in the Indenture.

         Payment of the principal of, and premium, if any, and interest payable

                                      -1-

<PAGE>

upon Maturity or redemption of, this Security shall be made in immediately
available funds at the offices of Bankers Trust Company, in the Borough of
Manhattan, The City of New York (the "Paying Agent"), upon presentation of this
Security. Alternatively, such payments shall be made at such other offices or
agencies of the Company maintained for that purpose in the Borough of Manhattan,
The City of New York, in such coin or currency of the United States as at the
time of payment is legal tender for payment of public and private debts. Payment
of interest, other than interest payable upon Maturity or redemption, will be
made by United States dollar check mailed on the applicable interest payment
date to the address of the Person entitled thereto as such address shall appear
in the Security Register. The Company may also appoint additional paying agents.
Notwithstanding the foregoing, (a) a Holder of U.S. $5,000,000 or more in
aggregate principal amount of Notes of like tenor and terms may elect at any
time to have payment of interest made by wire transfer in immediately available
funds, but only if appropriate instructions have been received in writing by
Bankers Trust Company (or other paying agent) on or prior to the applicable
Regular Record Date for such payment of interest, and (b) payment of interest on
a Note registered in the name of The Depository Trust Company or its nominee
shall be made by wire transfer in immediately available funds.

         This Security is one of a duly authorized issuance of Medium-Term Notes
Due from 9 Months to 30 Years from Date of Issue of the Company (the
"Securities"), which have been issued under and are governed by the terms of an
Indenture dated as of November 27, 1990 (the "Indenture") between the Company
and Bankers Trust Company of California, National Association, as

                                      -2-

<PAGE>
Trustee (the "Trustee," which term includes any successor trustee under the
Indenture), to which Indenture and all indentures supplemental thereto reference
is hereby made for a description of the respective rights thereunder of the
Company, the Trustee and the Holders of the Securities, and the terms upon which
the Securities are, and are to be, authenticated and delivered.

         Reference is made to the further provisions of this Security set forth
on the reverse hereof, which shall have the same effect as though duly set forth
at this place.

         This Security shall not be valid or obligatory for any purpose until
the certificate of authentication hereon shall have been manually signed by the
Trustee.

         IN WITNESS WHEREOF, POTLATCH CORPORATION has caused this instrument to
be signed in its name by the manual or facsimile signature of its Chairman of
the Board and Chief Executive Officer, the President, the Senior Vice President,
Finance or its Treasurer and impressed or imprinted with its corporate seal or
facsimile thereof, attested by the manual or facsimile signature of its
Secretary or one of its Assistant Secretaries.

           Dated:______________     ,_______.

                              POTLATCH CORPORATION

                              By_____________________
                                  Sandra T. Powell
                                     Treasurer

(Corporate Seal)

Attest:

(Assistant) Secretary

         This is one of the Securities of the series designated herein, referred
to in the within-mentioned Indenture.

                                 BANKERS TRUST COMPANY OF CALIFORNIA,
                                 NATIONAL ASSOCIATION, as Trustee

                                 By: Bankers Trust Company
                                     as Authenticating Agent

                                 By__________________________
                                       Authorized Signature

                                      -3-

<PAGE>
(REVERSE SIDE OF FIXED-RATE NOTE)

                           POTLATCH CORPORATION
       MEDIUM-TERM NOTES DUE FROM 9 MONTHS TO 30 YEARS FROM DATE OF ISSUE

         This Security is one of a duly authorized issuance of Securities of the
Company designated as its Medium-Term Notes Due from 9 Months to 30 Years from
Date of Issue (the "Securities"), limited in aggregate principal amount to
$100,000,000, subject to reduction or increase upon the determination of the
Company, all issued or to be issued under and pursuant to an Indenture dated as
of November 27, 1990 between the Company and Bankers Trust Company of
California, National Association, as Trustee (the "Trustee"), to which Indenture
and all indentures supplemental thereto (the "Indenture") reference is hereby
made for a description of the rights, limitations of rights, obligations, duties
and immunities thereunder of the Trustee, the Company and the Holders of the
Securities. The Securities will be issued only in fully registered form in
denominations of $100,000 principal amount and integral multiples of $1,000 in
excess thereof.

         This Security may not be redeemed before the Redemption Commencement
Date, if any, stated on the face hereof. If no Redemption Commencement Date is
indicated hereon, this Security is not redeemable prior to the Stated Maturity
hereof. On or after the Redemption Commencement Date, this Security may be
redeemed in accordance with its terms and the Indenture. In the event of
redemption of this Security in part only, a new Security or Securities of this
series for the unredeemed portion hereof will be issued in the name of the
Holder hereof upon the cancellation hereof.

         In case an Event of Default, as defined in the Indenture, with respect
to the Securities shall have occurred and be continuing, the principal hereof
(unless otherwise indicated on the face hereof) may be declared, and upon such
declaration shall become, due and payable, in the manner, with the effect and
subject to the conditions provided in the Indenture. In addition to the Events
of Default in the Indenture that are applicable to the Securities, the Company
covenants that an Event of Default with respect to the Securities will include
the following: a default under any bond, debenture, note or other evidence of
indebtedness for money borrowed in excess of $10,000,000 by the Company
(including a default with respect to any series of debt securities issued under
the Indenture other than the Securities of this series) or under any mortgage,
indenture or other instrument under which there may be issued or by which there
may be secured or evidenced any indebtedness for money borrowed in excess of
$10,000,000 by the Company (including the Indenture), whether such indebtedness
now exists or shall hereafter be created, which default (i) shall consist of a
failure to pay such indebtedness at final maturity and after the expiration of
the applicable grace period or (ii) shall have resulted in such indebtedness
becoming or being declared due and payable prior to the date on which it would
otherwise have become due and payable, without such acceleration having been
rescinded or annulled or such indebtedness having been discharged, in all cases
within a period of 10 days after there shall

                                      -4-

<PAGE>
have been given, by registered or certified mail, to the Company by the Trustee,
or to the Company and the Trustee by the Holders of at least 25% in aggregate
principal amount of the Securities, a written notice specifying such default and
requiring the Company to cause such indebtedness to be discharged or cause such
acceleration to be rescinded or annulled and stating that such notice is a
"Notice of Default" under the Indenture. The Trustee shall not be deemed to have
knowledge of such default unless either (a) a Responsible Officer of the Trustee
shall have actual knowledge of such default or (b) the Trustee shall receive
written notice thereof from the Company, from any Holder, from the holder of any
such indebtedness or from the trustee under any such mortgage, indenture or
other instrument.

         The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the rights of the Holders of the Securities of each series to be
affected under the Indenture at any time by the Company and the Trustee with the
consent of the Holders of a majority in aggregate principal amount of the
Securities at the time Outstanding of each series to be affected. The Indenture
also contains provisions permitting the Holders of a majority in principal
amount of the Securities of each series at the time Outstanding, on behalf of
the Holders of all Securities of such series, to waive compliance by the Company
with certain provisions of the Indenture and certain past defaults under the
Indenture and their consequences. Any such consent or waiver by the Holder of
this Security shall be conclusive and binding upon such Holder and upon all
future Holders of this Security and of any Security issued upon the registration
of transfer hereof or in exchange hereof or in lieu hereof, whether or not a
notation of such waiver is made upon this Security. Any Holder may revoke the
consent or waiver as to this Security if the Trustee receives notice of
revocation within the time specified in Section 907 of the Indenture.

         The Indenture contains provisions for defeasance at any time of (a) the
entire indebtedness on this Security and (b) certain restrictive covenants upon
compliance by the Company with certain conditions set forth therein, which
provisions apply to this Security.

         Unless otherwise indicated on the face hereof, the transfer of this
Security is registrable by the registered owner hereof in person or by his
attorney duly authorized in writing at the office of the Security Registrar or
at the office of any transfer agent designated by the Company for such purpose.
Subject to the terms of the Indenture, upon payment of a sum sufficient to
reimburse the Company for any tax or other governmental charge incident to
transfer to the extent required by the Indenture, and upon surrender and
cancellation of this Security upon any such registration of transfer, a new
Security or Securities of authorized denomination or denominations, for the same
aggregate principal amount, will be issued to the transferee in exchange
herefor.

         Prior to due presentation of this Security for registration of
transfer, the Company, the Trustee, the Authenticating Agent, if any, any agent
of the Company or the Trustee, the paying agent and the Security Registrar may
deem and treat the Person in whose name this Security shall

                                      -5-

<PAGE>

be registered upon the Security Register as the absolute owner of this Security
for all purposes.

         No recourse shall be had for the payment of the principal of and
premium, if any, or the interest on this Security, or for any claim based
hereon, or otherwise in respect hereof, or based on or in respect of the
Indenture or any indenture supplemental thereto, against any incorporator,
stockholder, officer, director or Affiliate, as such, past, present or future,
of the Company or of any respective successor corporation, whether by virtue of
any constitution, statute or rule of law, or by the enforcement of any
assessment or penalty or otherwise, all such liability being, by the acceptance
hereof and as part of the consideration for the issuance hereof, expressly
waived and released.

         All terms used in this Security which are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

         The laws of the State of New York shall govern the Indenture and this
Security.

         Except as provided in the Indenture, this Security will rank on a
parity with all other unsecured and unsubordinated indebtedness of the Company.

                                      -6-

<PAGE>

         FOR VALUE RECEIVED the undersigned hereby sell(s), assign(s) and
transfer(s) unto

---------------------------------------------------------------------
Please insert Social Security or other identifying number of assignee

---------------------------------------------------------------------
            Please print or typewrite name and address
              including postal zip code of assignee

the within Security and all rights thereunder, hereby irrevocably constituting
and appointing _________________________________________ attorney to transfer
said Security on the books of the Company, with full power of substitution in
the premises.

           Dated:________________,______

                               Signature:____________________________
                                         NOTICE: The signature to this
                                         assignment must correspond
                                         with the name as written upon
                                         the face of the within instru-
                                         ment in every particular,
                                         without alteration or
                                         enlargement or any change
                                         whatever and must be
                                         guaranteed by a commercial
                                         bank or trust company having
                                         its principal office or a
                                         correspondent in The City of
                                         New York or by a member firm
                                         of the New York Stock
                                         Exchange.

                                      -7-<PAGE>

                                                               Exhibit 10(c)(i)

                             STOCK OPTION AGREEMENT
                             ----------------------

                 POTLATCH CORPORATION 2000 STOCK INCENTIVE PLAN
                 ----------------------------------------------

         THIS AGREEMENT made and entered into the day specified in the attached
addendum to this Agreement by and between POTLATCH CORPORATION, a Delaware
                                          --------------------
corporation (the "Corporation") and the employee of the Corporation named in the
attached addendum ("Employee"),

                              W I T N E S S E T H:

         That to encourage stock ownership by employees of the Corporation and
for other valuable consideration, the parties agree as follows:

         1.       Definitions.
                  -----------

         (a)      "Agreement" means this stock option agreement.
                   ---------

         (b)      "Board" means the Board of Directors of the Corporation.
                   -----

         (c)      "Change in Control" means an event or transaction described
                   -----------------
in Subparagraph (a), (b), (c) or (d) of Paragraph 3.

         (d)      "Code" means the Internal Revenue Code of 1986, as amended.
                   ----

         (e)      "Common Stock" means the $1 par value Common Stock of the
                   ------------
Corporation.

         (f)      "Committee" means the committee appointed by the Board to
                   ---------
administer the Plan.

         (g)      "Corporation" means Potlatch Corporation, a Delaware
                   -----------
corporation.

         (h)      "Date of Grant" means the date on which the Committee
                   -------------
determined to grant this Option, as specified in Section 1 of the addendum to
this Agreement.

         (i)      "Disability" means the Employee is unable to engage in any
                   ----------
substantial gainful activity by reason of any medically determinable physical
or mental impairment which can be expected to result in death or which has
lasted or can be expected to last for a continuous period of at least 12 months.

         (j)      "Exercise Price" means the price per Share designated in
                   --------------
Section 2 of the addendum to this Agreement at which this Option may be
exercised.

                                     1

<PAGE>

         (k)      "Fair Market Value" of a Share as of a specified date means
                   -----------------
the closing price at which Shares are traded at the close of business on such
date as reported in the New York Stock Exchange composite transactions
published in the Western Edition of The Wall Street Journal, or if no trading
of Shares is reported for that day, on the next preceding day on which trading
was reported.

         (1)      "Incentive Stock Option" means an Option described in Code
                   ----------------------
section 422(b).

         (m)      "Nonqualified Stock Option" means an Option other than an
                   -------------------------
Incentive Stock Option.

         (n)      "Option" means a stock option granted pursuant to the Plan.
                   ------

         (o)      "Option Period" means the term of this Option as provided in
                   -------------
Paragraph 3 of this Agreement.

         (p)      "Partial Exercise" means an exercise with respect to less
                   ----------------
than all of the vested but unexercised Shares subject to Option held by the
person, exercising the Option.

         (q)      "Plan" means the Potlatch Corporation 2000 Stock Incentive
                   ----
Plan, pursuant to which the parties have entered into this Agreement.

         (r)      "Purchase Price" means the Exercise Price times the number
                   --------------
of whole shares with respect to which this Option is exercised.

         (s)      "Securities Act" means the Securities Act of 1933, as amended.
                   --------------

         (t)      "Share" means one share of Common Stock, adjusted in
                   -----
accordance with Section 13 of the Plan.

         (u)      "Subsidiary" means any corporation in an unbroken chain of
                   ----------
corporations beginning with the Corporation if each of the corporations other
than the last corporation in the unbroken chain owns stock possessing 50% or
more of the total combined voting power of all classes of stock in one of the
other corporations in such chain.

         2.       The Corporation grants to Employee the option to purchase
that number of shares of Common Stock specified in Section 3 of the addendum
to this Agreement for the Exercise Price specified in Section 2 of the
addendum to this Agreement, on the terms and conditions stated in this
Agreement.

         This Option has been granted pursuant to the Plan, a copy of the text
of which Employee may obtain upon request to the Corporation.

                                     2

<PAGE>

         3.       Subject to the conditions stated in this Agreement, unless a
different period is specified in Section 5 of the addendum to this Agreement,
the period during which the option may be exercised (the "Vesting Schedule")
shall be as follows:

         Number of Shares                      Vesting Schedule*
         ----------------                      -------------------

50% of the number of shares                From one year from the Date
specified in Section 3 of                  of Grant to end of term for
the addendum                               Option

50% of the number of shares                From two years from the
specified in Section 3 of                  Date of Grant to end of
the addendum                               term for Option

         Beginning six months after the Date of Grant, Employee shall have the
right to exercise the Option (or to call the related stock appreciation right
as described in Paragraph 4), in whole or in part:

                  (a)  Upon consummation of a reorganization, merger or
         consolidation involving the Corporation (a "Business Combination"), in
         each case, unless, following such Business Combination, (A) all or
         substantially all of the individuals and entities who were the
         beneficial owners, respectively, of the then outstanding shares of
         Common Stock (the "Outstanding Common Stock") and the then outstanding
         voting securities of the Corporation entitled to vote generally in the
         election of directors (the "Outstanding Voting Securities")
         immediately prior to such Business Combination beneficially own,
         directly or indirectly, more than 50% of, respectively, the then
         outstanding shares of common stock and the combined voting power
         of the then outstanding voting securities entitled to vote generally
         in the election of directors of the corporation resulting from such
         Business Combination (including, without limitation, a corporation
         which as a result of such transaction owns the Corporation either
         directly or through one or more subsidiaries), (B) no Person (as
         defined in subparagraph (c) below) (excluding any corporation
         resulting from such Business Combination or any employee benefit plan
         (or related trust) sponsored or maintained by the Corporation or such
         other corporation resulting from such Business Combination)
         beneficially owns, directly or indirectly, 20% or more of,
         respectively, the then outstanding shares of common stock of the
         corporation resulting from such Business Combination or the combined
         voting power of the then outstanding voting securities of such
         corporation except to the extent that such ownership is based on the
         beneficial ownership, directly or indirectly, of Outstanding Common
         Stock or Outstanding Voting Securities immediately prior to the
         Business Combination and (C) at least a majority of the members of the
         board of directors of the corporation resulting from such Business
         Combination were members of the Board at the time of the execution of
         the initial agreement,

--------------------------------
* See Paragraph 5 for further explanation of end of term for Option.

                                     3

<PAGE>

         or of the action of the Board, providing for such Business
         Combination; provided, however, if the Corporation and the other
         party to the Business Combination agree that the transaction
         is to be treated as a pooling of interests for financial reporting
         purposes, and if the transaction in fact is so treated, then the right
         to exercise the Option (or to call the related stock appreciation
         right) shall not be accelerated upon consummation of the Business
         Combination to the extent that the Corporation's independent
         accountants and the other party's independent accountants separately
         determine in good faith that the acceleration would preclude the use
         of pooling of interests accounting; or

                  (b)  On the date that individuals who, as of December 2, 1999
         constitute the Board (the "Incumbent Board") cease for any reason to
         constitute at least a majority of the Board; provided, however, that
         any individual becoming a director subsequent to December 2, 1999
         whose election, or nomination for election by the Corporation's
         stockholders, was approved by a vote of at least a majority of the
         directors then comprising the Incumbent Board shall be considered as
         though such individual were a member of the Incumbent Board, but
         excluding, for this purpose, any such individual whose initial
         assumption of office occurs as a result of an actual or threatened
         election contest with respect to the election or removal of directors,
         an actual or threatened solicitation of proxies or consents or any
         other actual or threatened action by, or on behalf of any Person other
         than the Board; or

                  c)  Upon the acquisition after December 2, 1999 by any
         individual, entity or group (within the meaning of Section 13(d)(3) or
         14(d)(2) of the Securities Exchange Act of 1934, as amended (the
         "Exchange Act")) (a "Person") of beneficial ownership (within the
         meaning of Rule 13d-3 promulgated under the Exchange Act) of 20% or
         more of either (A) the then Outstanding Common Stock or (B) the
         combined voting power of the Outstanding Voting Securities; provided,
         however, that the following acquisitions shall not be deemed to be
         covered by this subsection (c): (x) any acquisition of Outstanding
         Common Stock or Outstanding Voting Securities by the Corporation, (y)
         any acquisition of Outstanding Common Stock or Outstanding Voting
         Securities by any employee benefit plan (or related trust) sponsored
         or maintained by the Corporation or (z) any acquisition of Outstanding
         Common Stock or Outstanding Voting Securities by any corporation
         pursuant to a transaction which complies with clauses (A), (B) and (C)
         of subsection (a) of this Paragraph 3; or

                  (d)  Upon the consummation of the sale of all or
         substantially all of the assets of the Corporation or approval by the
         stockholders of the Corporation of a complete liquidation or
         dissolution of the Corporation.

         4.  In the event of a Change in Control, this Option shall
automatically include a stock appreciation right that may be called by the
Employee. After a Change in Control event, the Employee may surrender all or
part of this Option and exercise the stock appreciation right in lieu of
exercising all or any part of this Option, provided that at least

                                     4

<PAGE>

six months have elapsed from the Date of Grant and that the Fair Market Value
of the Common Stock on the date of such exercise is higher than the Exercise
Price specified in Section 2 of the addendum to this Agreement. The exercise
of a stock appreciation right is referred to in this Paragraph 4 as the
"call".  Upon the call of a stock appreciation right, Employee shall be
entitled to receive payment of an amount equal to the difference obtained by
subtracting the aggregate option price of the shares subject to the Option (or
the portion of such Option) from the Fair Market Value of such Shares on the
date of such call. In the case of a stock appreciation right that is called
after an event described in Paragraph 3(a) or 3(d), for purposes of measuring
the value of the stock appreciation right, "Fair Market Value" shall be the
greater of (a) the value of the consideration per share that the Employee
would have received in connection with the transaction described in Paragraph
3(a) or 3(d) as a stockholder of the Corporation if he or she had exercised
the Option immediately prior to the event described in Paragraph 3(a) or 3(d)
or (b) the value determined as of the date of the call in good faith by the
Committee (as composed on the day preceding the date of consummation of the
transaction described in Paragraph 3(a) or 3(d)), taking into consideration
all relevant facts and circumstances.

         For all purposes under this Agreement (unless the context requires
otherwise), the terms "exercise" or "exercisable" shall be deemed to include
the terms "call" or "callable" as such terms may apply to a stock appreciation
right, and in the event of the call of a stock appreciation right the
underlying Option will be deemed to have been exercised for all purposes under
the Plan.

         Payment of a stock appreciation right shall be made as soon as
reasonably practicable following receipt by the Corporation of the notice
described in Paragraph 8. Unless otherwise required by the Plan, payment of
the stock appreciation right shall be made in such form as may be permitted
pursuant to the rules and regulations adopted from time to time by the
Committee, as in effect on the date the stock appreciation right is called.

         5.     The term of this Option shall end and this Option shall not be
exercisable after seven years from the Date of Grant if this Option is
designated as an Incentive Stock Option in Section 4 of the addendum to this
Agreement or 10 years from the Date of Grant if this Option is designated as a
Nonqualified Stock Option in Section 4 of such addendum or, if earlier, upon
the termination of Employee's employment with the Corporation or its
Subsidiaries, subject to the following provisions:

                  (a)     If the termination of employment is caused by
         Employee's death, this Option, to the extent that it was exercisable
         under Paragraph 3 of this Agreement at the date of death and had not
         previously been exercised, may be exercised at any time before the end
         of the Option Period as specified in the Option Agreement by
         Employee's executors or administrators or by any person or persons who
         shall have acquired this Option directly from Employee by bequest or
         inheritance.

                                     5

<PAGE>

                  (b)     If the termination of employment is caused by
         Disability or Early, Normal or Late Retirement under the Potlatch
         Corporation Salaried Employees' Retirement Plan, this Option, to the
         extent it was exercisable under Paragraph 3 of this Agreement at the
         date of such termination and had not previously been exercised, may be
         exercised at any time before the end of the Option Period as specified
         in the Option Agreement.

                  (c)     If the termination of employment is for any reason
         other than death, Disability, or Early, Normal or Late Retirement
         under the Potlatch Corporation Salaried Employees' Retirement Plan,
         this Option, to the extent that it was exercisable under Paragraph 3
         of this Agreement at the date of such termination and had not
         previously been exercised, may be exercised within three months after
         the date of such termination; provided that in such case the right to
         call a stock appreciation right as described in Paragraph 4 shall
         terminate on the date Employee's employment terminates unless Employee
         requests and the Committee permits the call of the stock appreciation
         right within three months after the date of such termination.
         Notwithstanding the foregoing, if the termination of employment is by
         reason of Employee's misconduct, the option shall cease to be
         exercisable or callable at the time of such termination. As used in
         this Paragraph, "misconduct" means that Employee has engaged in unfair
         competition with the Corporation or a Subsidiary, induced any customer
         of the Corporation or a Subsidiary to breach any contract
         with the Corporation or a Subsidiary, made any unauthorized disclosure
         of any of the secrets or confidential information of the Corporation
         or a Subsidiary, committed an act of embezzlement, fraud or theft with
         respect to the property of the Corporation or a Subsidiary, or engaged
         in conduct which is not in good faith and which directly results in
         material loss, damage or injury to the business, reputation or
         employees of the Corporation or a Subsidiary. The Committee shall
         determine whether Employee's employment is terminated by reason of
         misconduct. In making such determination the Committee shall act
         fairly and shall give Employee an opportunity to be heard and present
         evidence on Employee's behalf.

         6.     The Corporation agrees that it will at all times during the
Option Period reserve and keep available sufficient authorized but unissued or
reacquired Common Stock to satisfy the requirements of this Agreement. The
number of Shares reserved and the Exercise Price shall be proportionately
adjusted for any increase or decrease in the number of issued and outstanding
Shares by reason of stock dividends, stock splits, consolidations,
recapitalizations, reorganizations or like events, as determined by the
Committee pursuant to the Plan.

         7.     Subject to any required action by the stockholders, if the
Corporation shall be a party to any merger, consolidation or other
reorganization, this Option shall apply to the securities to which a holder of
the number of Shares subject to this Option would have been entitled.

                                     6

<PAGE>

         8.     Employee, or Employee's representative, may exercise 20% or
more of the portion of this Option that has become vested under Paragraph 3 of
this Agreement by giving written notice to the Corporation at Spokane,
Washington, attention of the Vice President, Employee Relations, specifying
the election to exercise the Option, the number of Shares for which it is
being exercised and the method of payment for the amount of the Purchase Price
of the Shares for which this Option is exercised. Such payment shall be made:

                (a)      In United States dollars delivered at the time of
         exercise;

                (b)      Subject to the conditions stated in rules and
         regulations adopted by the Committee, by the surrender of Shares in
         good form for transfer, owned by the person exercising this Option
         and having an aggregate Fair Market Value on the date of exercise
         equal to the Purchase Price; or

                (c)     In any combination of Subparagraphs (a) and (b) above,
         if the total of the cash paid and the Fair Market Value of the Shares
         surrendered equals the Purchase Price of the Shares for which this
         Option is being exercised.

         The notice shall be signed by the person or persons exercising this
Option, and in the event this Option is being exercised by the representative
of Employee, shall be accompanied by proof satisfactory to the Corporation of
the right of the representative to exercise the Option. No Share shall be
issued until full payment has been made. After receipt of full payment, the
Corporation shall cause to be issued a certificate or certificates for the
Shares for which this Option has been exercised, registered in the name of the
person or persons exercising the Option (or in the name of such person or
persons and another person as community property or as joint tenants), and
cause such certificate or certificates to be delivered to or upon the order of
such person or persons.

         9.     If any payments or transfers to or for the benefit of the
Employee are deemed an "excess parachute payment" as defined in Section 280G
of the Internal Revenue Code of 1986 (the "Code") subject to the excise tax
imposed by Section 4999 of the Code, the Corporation shall pay to the Employee
an additional amount such that the total amount of all such payments and
benefits (including payments made pursuant to this Section) to the Employee
shall equal the total amount of all such payments and benefits to which the
Employee would have been entitled (but for this Section) net of all applicable
federal, state and local taxes except the excise tax. For purposes of this
Section, the Employee shall be deemed to pay federal, state and local taxes at
the highest marginal rate of taxation for the applicable calendar year. The
amount of the payment to the Employee shall be estimated by the firm of
independent certified public accountants serving as the outside auditor of the
Corporation, as of the date of the applicable event as described in Paragraph
3(a) through 3(d).

         10.    In the event the Corporation determines that it is required
to withhold state or federal income tax as a result of the exercise of this
Option, as a condition to the

                                     7

<PAGE>

exercise of the Option, Employee will make arrangements satisfactory to the
Corporation to enable it to satisfy such withholding requirements.

         11.    Neither Employee nor Employee's representative shall have any
rights as a stockholder with respect to any Shares subject to this Option
until such Shares shall have been issued to Employee or Employee's
representative.

         12.    Unless at the time Employee gives notice of the exercise of
this Option, the Shares to be issued are registered under the Securities Act,
the notice shall include a statement to the effect that all Shares for which
this Option is being exercised are being purchased for investment, and without
present intention of resale, and will not be sold without registration under
the Securities Act or exemption from registration, and such other
representations as the Committee may require. The Corporation may permit the
sale or other disposition of any Shares acquired pursuant to any such
representation if it is satisfied that such sale or other disposition would
not contravene applicable state or federal securities laws. Unless the
Corporation shall determine that, in compliance with the Securities Act or
other applicable statute or regulation, it is necessary to register any of the
Shares for which this Option has been exercised, and unless such registration,
if required, has been completed, certificates to be issued upon the exercise
of this Option shall contain the following legend:

                "The Shares represented by this certificate have not been
         registered under the Securities Act of 1933 and may be offered, sold
         or transferred only if registered pursuant to the provisions of that
         Act or if an exemption from registration is available."

         13.    Except as otherwise provided in this Agreement, this Option
and the rights and privileges conferred by this Agreement shall not be
transferred, assigned, pledged or hypothecated in any way (whether by
operation of law or otherwise) and shall not be subject to sale under
execution, attachment or similar process. Upon any attempt to transfer,
assign, pledge, hypothecate or otherwise dispose of this Option, or of any
right or privilege conferred by this Agreement, contrary to the provisions of
this Paragraph, or upon any attempted sale under any execution, attachment or
similar process upon the rights and privileges conferred by this Agreement,
this Option and the rights and privileges conferred by this Agreement shall
immediately become null and void.

         14.    Nothing in this Agreement shall be construed as giving
Employee the right to be retained as an employee or as impairing the rights of
the Corporation to terminate his or her employment at any time, with or
without cause.

         15.    This Agreement shall be interpreted and construed in
accordance with the laws of the State of Delaware without regard to choice of
law principles.

                                     8

<PAGE>

                       ADDENDUM TO STOCK OPTION AGREEMENT
                 POTLATCH CORPORATION 2000 STOCK INCENTIVE PLAN

Name of Employee: ___________________________

1.     Date of Grant:    ________________

2.     Exercise Price: $_____ per share, which is agreed to be one hundred
       percent (100%) of the Fair Market Value of the common stock subject to
       the Option on the Date of Grant.

3.     The number of Shares subject to this Stock Option Agreement is _______,
       subject to adjustment as provided in Section 13 of the Plan and
       Paragraph 6 of this Stock Option Agreement.

4.     This Option is:  A Nonqualified Stock Option

5.     The Vesting Schedule for this Option is:  The schedule specified in
       Paragraph 3 of the Stock Option Agreement, except that no exercise or
       call will be permitted for a fractional Share.

The document entitled Stock Option Agreement -- Potlatch Corporation 2000 Stock
Incentive Plan is incorporated by this reference into this addendum.

IN WITNESS WHEREOF, the Corporation has caused this addendum to the Stock
------------------
Option Agreement to be executed on its behalf by its duly authorized
representative, and the Employee has executed the same on the date indicated
below.

                                             POTLATCH CORPORATION

Date: ________________  By   ____________________________________
                                Vice President Employee Relations

Date: ________________  By   ____________________________________
                                          Employee

                                     9

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