PROLOGIS TRUST
424B5, 1998-10-08
REAL ESTATE
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<PAGE>
                                            FILED PURSUANT TO RULE NO. 424(b)(5)
                                            REGISTRATION NO. 333-52867


   
           Prospectus Supplement to Prospectus Dated October 6, 1998.
 
                                  $125,000,000
 
                                      LOGO
 
                                 PROLOGIS TRUST
 
                          7% Notes due October 1, 2003
 
                               ----------------
 
  ProLogis will pay interest on the Notes on April 1 and October 1 of each
year. The first such payment will be made on April 1, 1999. The Notes will be
issued only in denominations of $1,000 and integral multiples of $1,000.
 
  ProLogis has the option to redeem the Notes at the Redemption Price. ProLogis
must give at least 30 but not more than 60 days' notice of its intention to
redeem the Notes. ProLogis may redeem all or a portion of the Notes.
 
                               ----------------
 
  NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY OTHER REGULATORY BODY
HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR PASSED UPON THE ACCURACY OR
ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
 
                               ----------------
 
<TABLE>
<CAPTION>
                                                              Per
                                                             Note      Total
                                                             ----      -----
<S>                                                         <C>     <C>
Initial public offering price.............................. 100.00% $125,000,000
Underwriting discount......................................   0.60%     $750,000
Proceeds, before expenses, to ProLogis.....................  99.40% $124,250,000
</TABLE>
 
  The initial public offering price set forth above does not include accrued
interest, if any. Interest on the Notes will accrue from October 9, 1998 and
must be paid by the purchaser if the Notes are delivered after October 9, 1998.
 
                               ----------------
 
  The underwriter expects to deliver the Notes in book-entry form only through
the facilities of The Depository Trust Company against payment in New York, New
York on October 9, 1998.
 
                              GOLDMAN, SACHS & CO.
 
                               ----------------
 
                  Prospectus Supplement dated October 6, 1998.
<PAGE>
 
                                 PROLOGIS TRUST
 
  ProLogis Trust ("ProLogis"), formerly known as Security Capital Industrial
Trust, is the largest U.S.-based global provider of integrated distribution
services with more than 1,200 distribution facilities owned and operating
throughout North America and Europe.
 
  ProLogis engages in the acquisition, development, marketing, operation and
long-term ownership of distribution facilities. ProLogis has the resources to
provide a full array of financial, development and operating services,
including: (i) expertise in market research, (ii) building and land acquisition
and due diligence, (iii) master-planned distribution park design and building
construction, (iv) marketing, asset and leasing management and (v) capital
markets and financial operations. ProLogis deploys capital in markets with
excellent long-term growth prospects and in markets where ProLogis can achieve
a strong market position through the acquisition and development of flexible
facilities for warehousing, distribution and light manufacturing uses. ProLogis
expanded its operations into Mexico and Europe in the first half of 1997 to
meet the needs of its targeted national and international customers as they
expand and reconfigure their distribution facility requirements globally.
ProLogis believes that there are significant growth opportunities
internationally. ProLogis is building its organization in both Mexico and
Europe as part of the ProLogis Operating System(TM).
 
  ProLogis' executive offices are located at 14100 East 35th Place, Aurora,
Colorado 80011 and its telephone number is (303) 375-9292.
 
                       RATIO OF EARNINGS TO FIXED CHARGES
 
  For the purpose of computing these ratios, (a) "earnings" consist of earnings
from operations plus fixed charges other than capitalized interest and (b)
"fixed charges" consist of interest on borrowed funds (including capitalized
interest) and amortization of debt discount and expense.
 
<TABLE>
<CAPTION>
                                                                    SIX MONTHS
                                                                       ENDED
                                           YEAR ENDED DECEMBER 31,   JUNE 30,
                                           ------------------------ ------------
                                           1993 1994 1995 1996 1997 1997   1998
                                           ---- ---- ---- ---- ---- -----  -----
<S>                                        <C>  <C>  <C>  <C>  <C>  <C>    <C>
Ratio of earnings to fixed charges........ 11.3 3.3  2.0  2.2  1.2    2.4    2.4
</TABLE>
 
                                USE OF PROCEEDS
 
  The net proceeds to ProLogis from the sale of the Notes offered hereby is
expected to be approximately $124.0 million. The net proceeds will be used to
repay borrowings under ProLogis' $350.0 million unsecured revolving line of
credit. ProLogis' unsecured revolving line of credit bears interest at the
greater of the federal funds rate plus 0.5% (6.0% at October 6, 1998) and prime
(8.25% at October 6, 1998) or, at ProLogis' option, LIBOR plus 0.75% (6.1563%
at October 6, 1998, which spread over LIBOR is based upon ProLogis' current
senior debt rating) and is scheduled to mature on May 1, 2000. At October 6,
1998, $135.0 million in borrowings were outstanding under this line of credit.
ProLogis funds its current investment and working capital needs with borrowings
from its unsecured line of credit which are subsequently repaid with proceeds
from the sales of debt and equity securities. Accordingly, ProLogis expects to
make additional borrowings under the line of credit following this offering.
 
                              RECENT DEVELOPMENTS
 
  ProLogis entered into an amended and restated $350.0 million unsecured
revolving credit agreement with NationsBank, N.A., as agent for a group of
banks, on August 11, 1998. The amended and restated credit agreement, which
matures on May 1, 2000, replaced ProLogis' previous line of credit. See "Use of
Proceeds" for certain terms of the amended and restated credit agreement.
 
                                      S-2
<PAGE>
 
  For the third quarter of 1998, ProLogis expects to recognize an expense of
approximately $27.7 million associated with two interest rate protection
agreements. These agreements were entered into in October 1997 in anticipation
of 1998 debt offerings. Due to changing market conditions in the third quarter
of 1998, it is management's belief that these interest rate protection
agreements no longer qualify for hedge accounting treatment under generally
accepted accounting principles. Accordingly, ProLogis will mark these
agreements to market as of September 30, 1998 and recognize the associated
expense in computing net earnings. This treatment does not effect ProLogis'
funds from operations as the expense will be added back to net earnings for
purposes of computing funds from operations for the third quarter of 1998.
 
                             DESCRIPTION OF NOTES
 
  The following description of the terms of the Notes offered hereby (referred
to in the accompanying Prospectus as the "Debt Securities") supplements, and
to the extent inconsistent therewith replaces, the description of the general
terms and provisions of the Debt Securities set forth in the accompanying
Prospectus, to which reference is hereby made.
 
GENERAL
 
  The Notes constitute a single series of Debt Securities (which are more
fully described in the accompanying Prospectus) to be issued pursuant to an
Indenture, dated as of March 1, 1995 (the "Indenture"), between ProLogis and
State Street Bank and Trust Company (the "Trustee"). The Notes will be limited
to an aggregate principal amount of $125.0 million. The terms of the Notes
include those provisions contained in the Indenture (the terms of which are
more fully described in the accompanying Prospectus) and those made part of
the Indenture by reference to the Trust Indenture Act of 1939, as amended (the
"Trust Indenture Act"). The Notes are subject to all such terms, and holders
of Notes are referred to the Indenture and Trust Indenture Act for a statement
thereof. ProLogis has $960.0 million of indebtedness outstanding pursuant to
the Indenture immediately prior to this offering.
 
  The Notes will be direct, senior unsecured obligations of ProLogis and will
rank equally with all other unsecured and unsubordinated indebtedness of
ProLogis from time to time outstanding. However, the Notes are effectively
subordinated to mortgages and other secured indebtedness of ProLogis and its
consolidated subsidiaries, which encumbered certain assets of ProLogis and its
consolidated subsidiaries (approximately $133.1 million of secured debt was
outstanding at June 30, 1998).
 
  As of June 30, 1998 on a pro forma basis giving effect to the issuance of
the Notes offered hereby and the application of the net proceeds therefrom,
the total outstanding indebtedness
of ProLogis and its consolidated subsidiaries was approximately $1.1 billion.
ProLogis may incur additional indebtedness, subject to the provisions
described under "Description of Debt Securities--Certain Covenants--
Limitations on Incurrence of Debt" in the accompanying Prospectus.
 
  Reference is made to the section entitled "Description of Debt Securities--
Certain Covenants" in the accompanying Prospectus for a description of the
covenants applicable to the Notes. The defeasance and covenant defeasance
provisions of the Indenture described under "Description of Debt Securities--
Discharge, Defeasance and Covenant Defeasance" in the accompanying Prospectus
will apply to the Notes. Each of the covenants described in the Prospectus
under the caption "Description of Debt Securities--Certain Covenants" will be
subject to defeasance.
 
  The Notes will only be issued in fully registered form in denominations of
$1,000 and integral multiples thereof.
 
                                      S-3
<PAGE>
 
  Except as set forth under "Description of Debt Securities--Certain
Covenants--Limitations on Incurrence of Debt" in the accompanying Prospectus,
the Indenture does not contain any other provisions that would limit the
ability of ProLogis to incur indebtedness or that would afford holders of the
Notes protection in the event of a highly leveraged or similar transaction
involving ProLogis or in the event of a change of control. However, ProLogis'
Amended and Restated Declaration of Trust restricts beneficial ownership of
ProLogis' outstanding common shares by a single person or persons acting as a
group, to 9.8% of such common shares, with certain exceptions. These
restrictions are designed to preserve ProLogis' status as a real estate
investment trust and, therefore, may act to prevent or hinder a change of
control.
 
PRINCIPAL AND INTEREST
 
  The Notes will bear interest at 7% per annum and will mature on October 1,
2003. The Notes will bear interest from October 9, 1998 or from the immediately
preceding Interest Payment Date (as defined below) to which interest has been
paid, payable semi-annually in arrears on April 1 and October 1 of each year,
commencing on April 1, 1999 (each, an "Interest Payment Date"), to the persons
in whose name the Notes are registered in the Security Register on the
preceding March 15 or September 15 (whether or not a Business Day, as defined
below), as the case may be (each, a "Regular Record Date"). Interest on the
Notes will be computed on the basis of a 360-day year of twelve 30-day months.
 
  If any Interest Payment Date or the Maturity Date falls on a day that is not
a Business Day, the required payment shall be made on the next Business Day as
if it were made on the date such payment was due and no interest shall accrue
on the amount so payable for the period from and after such Interest Payment
Date or the Maturity Date, as the case may be. "Business Day" means any day,
other than a Saturday or Sunday, on which banks in the City of New York are not
required or authorized by law or executive order to close.
 
OPTIONAL REDEMPTION
 
  The Notes may be redeemed at any time at the option of ProLogis, in whole or
in part, at a redemption price equal to the sum of (i) the principal amount of
the Notes being redeemed plus accrued interest thereon to the redemption date
and (ii) the Make-Whole Amount, if any, with respect to such Notes (the
"Redemption Price").
 
  From and after the date notice has been given as provided in the Indenture,
if funds for the redemption of any Notes called for redemption shall have been
made available on such redemption date, such Notes will cease to bear interest
on the date fixed for such redemption specified in such notice and the only
right of the Holders of the Notes will be to receive payment of the Redemption
Price.
 
  Notice of any optional redemption of any Notes will be given to Holders at
their addresses, as shown in the Security Register, not more than 60 nor less
than 30 days prior to the date fixed for redemption. The notice of redemption
will specify, among other items, the Redemption Price and the principal amount
of the Notes held by such Holder to be redeemed.
 
  If less than all the Notes are to be redeemed at the option of ProLogis,
ProLogis will notify the Trustee at least 45 days prior to the redemption date
(or such shorter period as satisfactory to the Trustee) of the aggregate
principal amount of the Notes to be redeemed and the redemption date. The
Trustee shall select, in such manner as it shall deem fair and appropriate,
Notes to be redeemed in whole or in part. Notes may be redeemed in part in the
minimum authorized denomination for Notes or in any integral multiple thereof.
 
  "Make-Whole Amount" means, in connection with any optional redemption or
accelerated payment of any Note, the excess, if any of (i) the aggregate
present value as of the date of such
 
                                      S-4
<PAGE>
 
redemption or accelerated payment of each dollar of principal being redeemed or
paid and the amount of interest (exclusive of interest accrued to the date of
redemption or accelerated payment) that would have been payable in respect of
such dollar if such redemption or accelerated payment had not been made,
determined by discounting, on a semiannual basis, such principal and interest
at the Reinvestment Rate (determined on the third Business Day preceding the
date such notice of redemption is given or declaration of acceleration is made)
from the respective dates on which such principal and interest would have been
payable if such redemption or accelerated payment had not been made, over (ii)
the aggregate principal amount of the Notes being redeemed or paid.
 
  "Reinvestment Rate" means 0.25% (one-quarter of one percent) plus the
arithmetic mean of the yields under the respective headings "This Week" and
"Last Week" published in the Statistical Release under the caption "Treasury
Constant Maturities" for the maturity (rounded to the nearest month)
corresponding to the remaining life to maturity, as of the payment date of the
principal being redeemed or paid. If no maturity exactly corresponds to such
maturity, yields for the two published maturities most closely corresponding to
such maturity shall be calculated pursuant to the immediately preceding
sentence and the Reinvestment Rate shall be interpolated or extrapolated from
such yields on a straight-line basis, rounding in each of such relevant periods
to the nearest month. For the purposes of calculating the Reinvestment Rate,
the most recent Statistical Release published prior to the date of
determination of the Make-Whole Amount shall be used.
 
  "Statistical Release" means the statistical release designated "H.15(519)" or
any successor publication which is published weekly by the Federal Reserve
System and which establishes yields on actively traded United States government
securities adjusted to constant maturities, or, if such statistical release is
not published at the time of any determination under the Indenture, then such
other reasonably comparable index which shall be designated by ProLogis.
 
BOOK-ENTRY PROCEDURES
 
  The Depository Trust Company ("DTC"), New York, New York, will act as
securities depository for the Notes. The Notes will be issued as fully-
registered securities registered in the name of Cede & Co. (DTC's partnership
nominee).
 
  DTC is a limited-purpose trust company organized under the New York Banking
Law, a "banking organization" within the meaning of the New York Banking Law, a
member of the Federal Reserve System, a "clearing corporation" within the
meaning of the New York Uniform Commercial Code, and a "clearing agency"
registered pursuant to the provisions of Section 17A of the Securities Exchange
Act of 1934. DTC holds securities that its participants ("Participants")
deposit with DTC. DTC also facilitates the settlement among Participants of
securities transactions, such as transfers and pledges, in deposited securities
through electronic computerized book-entry changes in Participants' accounts,
thereby eliminating the need for physical movement of securities certificates.
Direct Participants include securities brokers and dealers, banks, trust
companies, clearing corporations, and certain other organizations ("Direct
Participants"). DTC is owned by a number of its Direct Participants and by the
New York Stock Exchange, Inc., the American Stock Exchange, Inc., and the
National Association of Securities Dealers, Inc. Access to the DTC system is
also available to others such as securities brokers and dealers, banks, and
trust companies that clear through or maintain a custodial relationship with a
Direct Participant, either directly or indirectly ("Indirect Participants").
The Rules applicable to DTC and its Participants are on file with the
Securities and Exchange Commission.
 
  Purchases of Notes under the DTC system must be made by or through Direct
Participants, which will receive a credit for the Notes on DTC's records. The
ownership interest of each actual purchaser of each Note ("Beneficial Owner")
will in turn be recorded on the Direct and Indirect Participants' records.
Beneficial Owners will not receive written confirmation from DTC of their
purchase, but Beneficial Owners are expected to receive written confirmations
providing details of the
 
                                      S-5
<PAGE>
 
transaction, as well as periodic statements of their holdings, from the Direct
or Indirect Participant through which the Beneficial Owner entered into the
transaction. Transfers of ownership interests in the Notes are to be
accomplished by entries made on the books of Participants acting on behalf of
Beneficial Owners. Beneficial Owners will not receive certificates representing
their ownership interests in Notes, except in the event that use of the book-
entry system for the Notes is discontinued.
 
  To facilitate subsequent transfers, all Notes deposited by Participants with
DTC are registered in the name of DTC's partnership nominee, Cede & Co. The
deposit of Notes with DTC and their registration in the name of Cede & Co.
effect no change in beneficial ownership. DTC has no knowledge of the actual
Beneficial Owners of the Notes; DTC's record reflects only the identity of the
Direct Participants to whose accounts such Notes are credited, which may or may
not be the Beneficial Owners. Participants are responsible for keeping account
of their holdings on behalf of their customers.
 
  Conveyance of notices and other communications by DTC to Direct Participants,
by Direct Participants to Indirect Participants, and by Direct Participants to
Beneficial Owners will be governed by arrangements among them, subject to any
statutory or regulatory requirements as may be in effect from time to time.
 
  Redemption notices will be sent to DTC. If less than all of the Notes within
a series are being redeemed, DTC's practice is to determine by lot the amount
of the interest of each Direct Participant in such series to be redeemed.
 
  Neither DTC nor Cede & Co. will consent or vote with respect to Notes. Under
its usual procedures, DTC will mail a proxy (the "Omnibus Proxy") to ProLogis
as soon as possible after the record date. The Omnibus Proxy assigns Cede &
Co.'s consenting or voting rights to those Direct Participants to whose
accounts the Notes are credited on the record date (identified in a listing
attached to the Omnibus Proxy).
 
  Principal and interest payments on the Notes will be made to Cede & Co., as
nominee of DTC. DTC's practice is to credit Direct Participants' accounts, upon
DTC's receipt of funds and corresponding detail information from ProLogis, on
payable date in accordance with their respective holdings shown on DTC's
records. Payments by Participants to Beneficial Owners will be governed by
standing instructions and customary practices, as is the case with securities
held for the accounts of customers in bearer form or registered in "street
name," and will be the responsibility of such Participant and not of DTC or
ProLogis, subject to any statutory or regulatory requirements as may be in
effect from time to time. Payment of principal and interest to Cede & Co. is
the responsibility of ProLogis, disbursement of such payments to Direct
Participants shall be the responsibility of DTC, and disbursement of such
payments to the Beneficial Owners shall be the responsibility of Direct and
Indirect Participants.
 
  DTC may discontinue providing its services as securities depository with
respect to the Notes at any time by giving reasonable notice to ProLogis. Under
such circumstances, in the event that a successor securities depository is not
obtained, certificates representing the Notes will be printed and delivered.
 
  Issuer may decide to discontinue use of the system of book-entry transfers
through DTC (or a successor securities depository). In that event, certificates
representing the Notes will be printed and delivered.
 
  The information in this section concerning DTC and DTC's book-entry system
has been obtained from sources that ProLogis believes to be reliable, but
ProLogis takes no responsibility for the accuracy thereof.
 
                                      S-6
<PAGE>
 
SAME-DAY SETTLEMENT AND PAYMENT
 
  Settlement for the Notes will be made by the Underwriter in immediately
available funds. All payments of principal and interest will be made by
ProLogis in immediately available funds or the equivalent, so long as DTC
continues to make its Same-Day Funds Settlement System available to ProLogis.
 
                                  UNDERWRITING
 
  ProLogis and the Underwriter have entered into an underwriting agreement with
respect to the Notes. Subject to certain conditions, the Underwriter has agreed
to purchase the entire principal amount of the Notes.
 
  Notes sold by the Underwriter to the public will initially be offered at the
initial public offering price set forth on the cover of this Prospectus. Any
Notes sold by the Underwriter to securities dealers may be sold at a discount
from the initial public offering price of up to 0.35% of the principal amount
of the Notes. Any such securities dealers may resell any Notes purchased from
the Underwriter to certain other brokers or dealers at a discount from the
initial public offering price of up to 0.25% of the principal amount of the
Notes. If all the Notes are not sold at the initial offering price, the
Underwriter may change the offering price and the other selling terms.
 
  The Notes are a new issue of securities with no established trading market.
ProLogis has been advised by the Underwriter that the Underwriter intends to
make a market in the Notes but it is not obligated to do so and may discontinue
market making at any time without notice. No assurance can be given as to the
liquidity of the trading market for the Notes.
 
  In connection with the offering, the Underwriter may purchase and sell the
Notes in the open market. These transactions may include short sales,
stabilizing transactions and purchases to cover positions created by short
sales. Short sales involve the sale by the Underwriter of a greater aggregate
principal amount of Notes than they are required to purchase in the offering.
Stabilizing transactions consist of certain bids or purchases made for the
purpose of preventing or retarding a decline in the market price of the Notes
while the offering is in progress.
 
  These activities by the Underwriter may stabilize, maintain or otherwise
affect the market price of the Notes. As a result, the price of the notes may
be higher than the price that otherwise might exist in the open market. If
these activities are commenced, they may be discontinued by the Underwriter at
any time. These transactions may be effected in the over-the-counter market or
otherwise.
 
  ProLogis estimates that its share of the total expenses of the offering,
excluding underwriting discounts and commissions, will be approximately
$250,000.
 
  ProLogis has agreed to indemnify the Underwriter against certain liabilities,
including liabilities under the Securities Act of 1933.
 
  In the ordinary course of their respective businesses, the Underwriter and
its affiliates have engaged, and may in the future engage, in investment
banking and/or commercial banking transactions with ProLogis and its
affiliates.
 
                               VALIDITY OF NOTES
 
  The validity of the Notes offered hereby will be passed upon for ProLogis by
Mayer, Brown & Platt, Chicago, Illinois. Certain legal matters will be passed
upon for the Underwriter by Skadden, Arps, Slate, Meagher & Flom LLP, New York,
New York. Mayer, Brown & Platt has in the past represented, and is currently
representing, ProLogis and certain of its affiliates.
 
                                      S-7
<PAGE>
 
PROSPECTUS
 
                                     LOGO
                     [LOGO OF PROLOGIS TRUST APPEARS HERE]
 
       $800,000,000 DEBT SECURITIES, PREFERRED SHARES AND COMMON SHARES*
 
                               ----------------
 
  ProLogis Trust ("ProLogis") may from time to time offer in one or more
series its (i) unsecured senior debt securities (the "Debt Securities"), (ii)
Preferred Shares of Beneficial Interest, par value $0.01 per share (the
"Preferred Shares"), and (iii) Common Shares of Beneficial Interest, par value
$0.01 per share (the "Common Shares"). The Debt Securities, Preferred Shares
and Common Shares (collectively, the "Offered Securities") may be offered,
separately or together, in separate series, in amounts, at prices and on terms
to be set forth in a supplement to this Prospectus (a "Prospectus
Supplement").
 
  The specific terms of the Offered Securities in respect of which this
Prospectus is being delivered will be set forth in the applicable Prospectus
Supplement and will include, where applicable: (i) in the case of Debt
Securities, the specific title, aggregate principal amount, currency, form
(which may be registered or bearer, or certificated or global), authorized
denominations, maturity, rate (or manner of calculation thereof) and time of
payment of interest, terms for redemption at the option of ProLogis or
repayment at the option of the Holder, terms for sinking fund payments, and
any initial public offering price; (ii) in the case of Preferred Shares, the
specific title and stated value, any dividend, liquidation, redemption,
conversion, voting and other rights, and any initial public offering price;
and (iii) in the case of Common Shares, any initial public offering price. In
addition, such specific terms may include limitations on direct or beneficial
ownership and restrictions on transfer of the Offered Securities, in each case
as may be appropriate to preserve the status of ProLogis as a real estate
investment trust ("REIT") for federal income tax purposes.
 
  The applicable Prospectus Supplement will also contain information, where
applicable, about certain United States federal income tax considerations
relating to, and any listing on a securities exchange of, the Offered
Securities covered by such Prospectus Supplement.
 
  The Offered Securities may be offered directly by ProLogis, through agents
designated from time to time by ProLogis, or to or through underwriters or
dealers. If any agents or underwriters are involved in the sale of any of the
Offered Securities, their names, and any applicable purchase price, fee,
commission or discount arrangement between or among them, will be set forth,
or will be calculable from the information set forth, in the applicable
Prospectus Supplement. See "Plan of Distribution." No Offered Securities may
be sold without delivery of the applicable Prospectus Supplement describing
the method and terms of the offering of such series of Offered Securities.
 
                               ----------------
 
*Pursuant to Rule 429 under the Securities Act of 1933, as amended (the
"Securities Act"), this Prospectus also relates to an additional $183,029,182
of the Offered Securities which were registered under a previous registration
statement.
 
                               ----------------
 
 THESE  SECURITIES HAVE NOT  BEEN APPROVED OR  DISAPPROVED BY THE  SECURITIES
   AND EXCHANGE COMMISSION OR ANY  STATE SECURITIES COMMISSION, NOR HAS THE
     SECURITIES   AND  EXCHANGE  COMMISSION   OR  ANY  STATE   SECURITIES
       COMMISSION  PASSED  UPON  THE   ACCURACY  OR  ADEQUACY  OF  THIS
         PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
           OFFENSE.
 
                               ----------------
 
     THE ATTORNEY GENERAL OF THE  STATE OF NEW YORK  HAS NOT PASSED ON  OR
          ENDORSED THE MERITS  OF THIS  OFFERING. ANY  REPRESENTATION
                         TO THE CONTRARY IS UNLAWFUL.
 
                               ----------------
 
                THE DATE OF THIS PROSPECTUS IS OCTOBER 6, 1998
<PAGE>
 
                             AVAILABLE INFORMATION
 
  ProLogis is subject to the informational requirements of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and, in accordance
therewith, files reports, proxy statements and other information with the
Securities and Exchange Commission (the "Commission"). Such reports, proxy
statements and other information can be inspected and copied at the public
reference facilities maintained by the Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549; Citicorp Center, 500 West Madison Street, Suite 1400,
Chicago, Illinois 60661; and 7 World Trade Center, 13th Floor, New York, New
York 10048. Copies of such material can be obtained at prescribed rates from
the Public Reference Section of the Commission at 450 Fifth Street, N.W.,
Washington, D.C. 20549. Such material can also be obtained from the
Commission's worldwide web site at http://www.sec.gov. ProLogis' outstanding
Common Shares, Series A Cumulative Redeemable Preferred Shares of Beneficial
Interest, par value $0.01 per share (the "Series A Preferred Shares"), Series
B Cumulative Convertible Redeemable Preferred Shares of Beneficial Interest,
par value $0.01 per share (the "Series B Preferred Shares") and Series D
Cumulative Redeemable Preferred Shares of Beneficial Interest, par value $0.01
per share (the "Series D Preferred Shares") are listed on the New York Stock
Exchange (the "NYSE") under the symbols "PLD," "PLD-A," "PLD-B" and "PLD-D,"
respectively, and all such reports, proxy statements and other information
filed by ProLogis with the NYSE may be inspected at the NYSE's offices at 20
Broad Street, New York, New York 10005.
 
  This Prospectus constitutes part of a registration statement on Form S-3
(together with all amendments and exhibits, the "Registration Statement")
filed by ProLogis with the Commission under the Securities Act. This
Prospectus does not contain all of the information set forth in the
Registration Statement, certain parts of which are omitted in accordance with
the rules and regulations of the Commission. For further information,
reference is hereby made to the Registration Statement.
 
                          INCORPORATION BY REFERENCE
 
    There are incorporated herein by reference the following documents
  heretofore filed by ProLogis with the Commission (File No. 1-12846):
 
    (a) ProLogis' Annual Report on Form 10-K for the fiscal year ended
  December 31, 1997, as amended;
 
    (b) ProLogis' Current Reports on Form 8-K filed March 17, April 13, April
  28 and April 30, 1998;
 
    (c) ProLogis' Quarterly Report on Form 10-Q for the fiscal quarter ended
  March 31, 1998;
 
    (d) The description of the Series A Preferred Shares contained under the
  caption "Description of Series A Preferred Shares" in ProLogis' prospectus
  supplement dated June 16, 1995 to the prospectus dated April 27, 1995
  forming a part of ProLogis' registration statement on Form S-3 (File No.
  33-90940) filed with the Commission pursuant to Rule 424(b) under the
  Securities Act and the related description contained under the caption
  "Description of Preferred Shares" in such prospectus;
 
    (e) The description of the Series B Preferred Shares contained under the
  caption "Description of Series B Preferred Shares" in ProLogis' prospectus
  supplement dated February 14, 1996 to the prospectus dated December 28,
  1995 forming a part of ProLogis' registration statement on Form S-3 (File
  No. 33-99548) filed with the Commission pursuant to Rule 424(b) under the
  Securities Act and the related description contained under the caption
  "Description of Preferred Shares" in such prospectus;
 
    (f) The description of the Series C Cumulative Redeemable Preferred
  Shares of Beneficial Interest, par value $0.01 per share (the "Series C
  Preferred Shares") contained under the caption "Description of Series C
  Preferred Shares" in ProLogis' prospectus supplement dated November 7, 1996
  to the prospectus dated October 31, 1996 forming a part of ProLogis'
  registration statement on Form S-3 (File No. 333-13909) filed with the
  Commission pursuant to Rule 424(b) under the Securities Act and the related
  description contained under the caption "Description of Preferred Shares"
  in such prospectus;
 
    (g) The description of the Series D Preferred Shares contained under the
  caption "Description of Series D Preferred Shares" in ProLogis' prospectus
  supplement dated April 7, 1998 to the prospectus dated
 
                                       2
<PAGE>
 
  November 21, 1997 forming a part of ProLogis' registration statement on
  Form S-3 (File No. 333-39797) filed with the Commission pursuant to Rule
  424(b) under the Securities Act and the related description contained under
  the caption "Description of Preferred Shares" in such prospectus;
 
    (h) The description of the Common Shares contained in ProLogis'
  registration statement on Form 8-A; and
 
    (i) The description of ProLogis' preferred share purchase rights
  contained in ProLogis' registration statement on Form 8-A.
 
  All documents subsequently filed by ProLogis pursuant to Sections 13(a),
13(c), 14 or 15(d) of the Exchange Act prior to the termination of the
offering of the Offered Securities, shall be deemed to be incorporated by
reference in this Prospectus and to be a part hereof from the date of filing
of such documents. All documents subsequently filed by ProLogis pursuant to
Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of the
initial Registration Statement and prior to effectiveness of the Registration
Statement shall be deemed to be incorporated by reference in this Prospectus
and to be part hereof from the date of filing of such documents. Any statement
contained herein or in a document incorporated or deemed to be incorporated by
reference herein shall be deemed to be modified or superseded for purposes of
this Prospectus to the extent that a statement contained herein, or in any
subsequently filed document which is incorporated or deemed to be incorporated
by reference herein, modifies or supersedes such statement. Any such statement
so modified or superseded shall not be deemed, except as so modified or
superseded, to constitute a part of this Prospectus.
 
  ProLogis will provide without charge to each person, including any
beneficial owner, to whom a copy of this Prospectus is delivered, upon the
written or oral request of such person, a copy of any or all of the documents
incorporated herein by reference, other than exhibits to such documents unless
such exhibits are specifically incorporated by reference into such documents.
Requests should be addressed to Secretary, ProLogis Trust, 14100 East 35th
Place, Aurora, Colorado 80011, telephone number: (303) 375-9292.
 
                                PROLOGIS TRUST
 
  ProLogis Trust ("ProLogis") is the largest publicly held, U.S.-based global
owner and operator of distribution properties based on equity market
capitalization. ProLogis is an international operating company focused
exclusively on meeting the distribution space needs of international,
national, regional and local industrial real estate users through the ProLogis
International Operating System(TM). ProLogis distinguishes itself from its
competition by being the only entity that combines all of the following:
 
  1. An international operating strategy dedicated to providing services to
     the 1,000 largest users of distribution facilities worldwide;
 
  2. An organizational structure and service delivery system built around the
     customer--ProLogis believes its service approach is unique to the real
     estate industry as it combines international scope and expertise with
     strong local presence;
 
  3. A disciplined investment strategy based on proprietary research that
     identifies high growth markets with sustainable demand for ProLogis'
     distribution facilities;
 
  4. Over 275 professionals in 37 offices in North America and Europe which
     ProLogis believes comprise the deepest and most experienced management
     team in industrial real estate; and
 
  5. Over 2,500 customers globally.
 
  The cornerstone of ProLogis' operating strategy is the ProLogis
International Operating System(TM) comprised of the Market Services Group, the
Global Services Group and the Global Development Group that utilizes ProLogis'
international network of corporate distribution facilities to meet customer
expansion and reconfiguration needs globally.
 
  ProLogis engages in the acquisition, development, marketing, operation and
long-term ownership of distribution facilities. ProLogis has the resources to
provide a full array of financial, development and operating
 
                                       3
<PAGE>
 
services, including: (i) expertise in market research, (ii) building and land
acquisition and due diligence, (iii) master-planned distribution park design
and building construction, (iv) marketing, asset and leasing management and
(v) capital markets and financial operations.
 
  ProLogis deploys capital in markets with excellent long-term growth
prospects and in markets where ProLogis can achieve a strong market position
through the acquisition and development of flexible facilities for
warehousing, distribution and light manufacturing uses. ProLogis expanded its
operations into Mexico and Europe in the first half of 1997 to meet the needs
of its targeted national and international customers as they expand and
reconfigure their distribution facility requirements globally. ProLogis
believes that there are significant growth opportunities internationally.
ProLogis is building its organization in both Mexico and Europe as part of the
ProLogis International Operating System(TM).
 
  ProLogis' executive offices are located at 14100 East 35th Place, Aurora,
Colorado 80011 and its telephone number is (303) 375-9292. ProLogis'
predecessor was formed in June 1991 as a Delaware corporation, and ProLogis
was re-formed as a Maryland real estate investment trust in January 1993.
 
                                USE OF PROCEEDS
 
  Unless otherwise described in the applicable Prospectus Supplement, the net
proceeds from the sale of the Offered Securities will be used for the
acquisition and development of additional distribution properties as suitable
opportunities arise, for the repayment of certain outstanding indebtedness at
such time, for capital improvements to properties and for general corporate
purposes.
 
   RATIO OF EARNINGS TO COMBINED FIXED CHARGES AND PREFERRED SHARE DIVIDENDS
 
  For the purpose of computing these ratios, (a) "earnings" consist of
earnings from operations plus fixed charges other than capitalized interest
and (b) "fixed charges" consist of interest on borrowed funds (including
capitalized interest) and amortization of debt discount and expense.
 
<TABLE>
<CAPTION>
                                                                 THREE MONTHS
                                                                     ENDED
                                        YEAR ENDED DECEMBER 31,    MARCH 31,
                                        ------------------------ --------------
                                        1993 1994 1995 1996 1997  1997    1998
                                        ---- ---- ---- ---- ---- ------  ------
<S>                                     <C>  <C>  <C>  <C>  <C>  <C>     <C>
Ratio of earnings to combined fixed
 charges
 and Preferred Share dividends(a)...... 11.3 3.3  1.7  1.5  (b)     1.5     1.7
</TABLE>
- --------
(a) ProLogis had no preferred shares in any of the historical periods
    presented prior to 1995.
(b) Earnings were insufficient to cover combined fixed charges and preferred
    share dividends for the period ended December 31, 1997 by $21.3 million
    due to a one-time, non-recurring charge of $75.4 million relating to the
    costs incurred in acquiring the REIT management and property management
    companies from Security Capital Group Incorporated ("Security Capital").
 
                        DESCRIPTION OF DEBT SECURITIES
 
  The Debt Securities are to be issued under an Indenture, dated as of March
1, 1995 (the "Indenture"), between ProLogis and State Street Bank and Trust
Company (the "Trustee"). The Indenture has been incorporated by reference as
an exhibit to the Registration Statement of which this Prospectus is a part
and is available for inspection at the corporate trust office of the Trustee
at 225 Franklin Street, Boston, Massachusetts 02110 or as described above
under "Available Information". The Indenture is subject to, and governed by,
the Trust Indenture Act of 1939, as amended (the "TIA"). The statements made
hereunder relating to the Indenture and the Debt Securities to be issued
thereunder are summaries of certain provisions thereof, do not purport to be
 
                                       4
<PAGE>
 
complete and are subject to, and are qualified in their entirety by reference
to, all the provisions of the Indenture and such Debt Securities. All section
references appearing herein are to sections of the Indenture, and capitalized
terms used but not defined herein shall have the respective meanings set forth
in the Indenture.
 
GENERAL
 
  The Debt Securities will be direct, unsecured and unsubordinated obligations
of ProLogis and will rank equally with all other unsecured and unsubordinated
indebtedness of ProLogis from time to time outstanding. The Indenture provides
that the Debt Securities may be issued without limit as to aggregate principal
amount, in one or more series, in each case as established from time to time
in or pursuant to authority granted by a resolution of the Board of Trustees
(the "Board") of ProLogis or as established in one or more indentures
supplemental to the Indenture. All Debt Securities of one series need not be
issued at the same time and, unless otherwise provided, a series may be
reopened, without the consent of the Holders of the Debt Securities of such
series, for issuances of additional Debt Securities of such series (Section
301).
 
  Reference is made to the Prospectus Supplement relating to the series of
Debt Securities being offered for the specific terms thereof, including:
 
    (1) the title of such series of Debt Securities;
 
    (2) the aggregate principal amount of such series of Debt Securities and
  any limit on such principal amount;
 
    (3) the percentage of the principal amount at which the Debt Securities
  of such series will be issued and, if other than the full principal amount
  thereof, the portion of the principal amount thereof payable upon
  declaration of acceleration of the maturity thereof, or the method by which
  any such portion shall be determined;
 
    (4) the date or dates, or the method by which such date or dates will be
  determined, on which the principal of the Debt Securities of such series
  will be payable and the amount of principal payable thereon;
 
    (5) the rate or rates (which may be fixed or variable), or the method by
  which such rate or rates shall be determined, at which the Debt Securities
  of such series will bear interest, if any;
 
    (6) the date or dates, or the method by which such date or dates will be
  determined, from which any such interest will accrue, the Interest Payment
  Dates on which any such interest will be payable, the Regular Record Dates
  for such Interest Payment Dates, or the method by which such dates shall be
  determined, the Person to whom, and the manner in which, such interest
  shall be payable, and the basis upon which interest shall be calculated if
  other than that of a 360-day year comprised of twelve 30-day months;
 
    (7) the place or places where the principal of (and premium or Make-Whole
  Amount (as defined), if any) and interest and Additional Amounts, if any,
  on the Debt Securities of such series will be payable, where such Debt
  Securities may be surrendered for registration of transfer or exchange and
  where notices or demands to or upon ProLogis in respect of such Debt
  Securities and the Indenture may be served;
 
    (8) the period or periods within which, the price or prices (including
  the premium or Make-Whole Amount, if any) at which, the currency or
  currencies in which, and the other terms and conditions upon which the Debt
  Securities of such series may be redeemed, as a whole or in part, at the
  option of ProLogis, if ProLogis is to have such an option;
 
    (9) the obligation, if any, of ProLogis to redeem, repay or purchase the
  Debt Securities of such series pursuant to any sinking fund or analogous
  provision or at the option of a Holder thereof, and the period or periods
  within which, the date or dates upon which, the price or prices at which,
  the currency or currencies, currency unit or units or composite currency or
  currencies in which, and the other terms and conditions upon which such
  Debt Securities shall be redeemed, repaid or purchased, as a whole or in
  part, pursuant to such obligation;
 
    (10) if other than United States dollars, the currency or currencies in
  which the Debt Securities of such series are denominated and payable, which
  may be a foreign currency or units of two or more foreign currencies or a
  composite currency or currencies, and the terms and conditions relating
  thereto;
 
                                       5
<PAGE>
 
    (11) whether the amount of payments of principal of (and premium or Make-
  Whole Amount, if any) or interest, if any, on the Debt Securities of such
  series may be determined with reference to an index, formula or other
  method (which index, formula or method may be, but need not be, based on a
  currency, currencies, currency unit or units or composite currency or
  currencies) and the manner in which such amounts shall be determined;
 
    (12) whether the principal of (and premium or Make-Whole Amount, if any)
  or interest or Additional Amounts, if any, on the Debt Securities of such
  series are to be payable, at the election of ProLogis or a Holder, in a
  currency or currencies, currency unit or units or composite currency or
  currencies, other than that in which such Debt Securities are denominated
  or stated to be payable, the period or periods within which, and the terms
  and conditions upon which, such election may be made, and the time and
  manner of, and identity of the exchange rate agent with responsibility for,
  determining the exchange rate between the currency or currencies in which
  such Debt Securities are denominated or stated to be payable and the
  currency or currencies in which such Debt Securities are to be so payable;
 
    (13) any deletions from, modifications of or additions to the terms of
  such series of Debt Securities with respect to the Events of Default or
  covenants set forth in the Indenture;
 
    (14) whether the Debt Securities of such series will be issued in
  certificated or book-entry form;
 
    (15) whether the Debt Securities of such series will be in registered or
  bearer form and, if in registered form, the denominations thereof if other
  than $1,000 and any integral multiple thereof and, if in bearer form, the
  denominations thereof if other than $5,000 and the terms and conditions
  relating thereto;
 
    (16) the applicability, if any, of the defeasance and covenant defeasance
  provisions of Article Fourteen of the Indenture to such series of Debt
  Securities and any provisions in modification thereof, in addition thereto
  or in lieu thereof;
 
    (17) if the Debt Securities of such series are to be issued upon the
  exercise of debt warrants, the time, manner and place for such Debt
  Securities to be authenticated and delivered;
 
    (18) whether and under what circumstances ProLogis will pay Additional
  Amounts as contemplated in the Indenture on the Debt Securities of such
  series in respect of any tax, assessment or governmental charge and, if so,
  whether ProLogis will have the option to redeem such Debt Securities rather
  than pay such Additional Amounts; and
 
    (19) any other terms of such series of Debt Securities not inconsistent
  with the provisions of the Indenture (Section 301).
 
  The Debt Securities may provide for less than the entire principal amount
thereof to be payable upon declaration of acceleration of the maturity thereof
or bear no interest or bear interest at a rate which at the time of issuance
is below market rates ("Original Issue Discount Securities"). Special United
States federal income tax, accounting and other considerations applicable to
Original Issue Discount Securities will be described in the applicable
Prospectus Supplement.
 
  Except as set forth below under "--Certain Covenants--Limitations on
Incurrence of Debt," the Indenture does not contain any other provisions that
would limit the ability of ProLogis to incur indebtedness or that would afford
Holders of Debt Securities protection in the event of a highly leveraged or
similar transaction involving ProLogis or in the event of a change of control.
However, ProLogis' Amended and Restated Declaration of Trust, as amended and
supplemented (the "Declaration of Trust"), restricts beneficial ownership of
ProLogis' outstanding shares of beneficial interest by a single person, or
persons acting as a group, to 9.8% of such shares, with certain exceptions
(including an exception in the case of Security Capital). See "Description of
Common Shares--Restriction on Size of Holdings". Additionally, the Articles
Supplementary relating to the Series A Preferred Shares, Series B Preferred
Shares, Series C Preferred Shares and Series D Preferred Shares restrict
beneficial ownership of the Series A Preferred Shares, the Series B Preferred
Shares, the Series C Preferred Shares or the Series D Preferred Shares by a
person, or persons acting as a group, to 25% of the Series A Preferred Shares,
the Series B Preferred Shares, the Series C Preferred Shares or the Series D
Preferred Shares,
 
                                       6
<PAGE>
 
with limited exceptions. Similarly, the Articles Supplementary for each other
series of Preferred Shares will contain certain provisions restricting the
ownership and transfer of the Preferred Shares. See "Description of Preferred
Shares--Restrictions on Ownership". These restrictions are designed to
preserve ProLogis' status as a REIT and, therefore, may act to prevent or
hinder a change of control. Reference is made to the applicable Prospectus
Supplement for information with respect to any deletions from, modifications
of or additions to the Events of Default or covenants of ProLogis that are
described below, including any addition of a covenant or other provision
providing event risk or similar protection.
 
DENOMINATIONS
 
  Unless otherwise described in the applicable Prospectus Supplement, the Debt
Securities of any series issued in registered form will be issuable in
denominations of $1,000 and integral multiples thereof. Unless otherwise
described in the applicable Prospectus Supplement, the Debt Securities of any
series issued in bearer form will be issuable in denominations of $5,000
(Section 302).
 
PRINCIPAL AND INTEREST
 
  Unless otherwise specified in the applicable Prospectus Supplement, the
principal of (and premium or Make-Whole Amount, if any) and interest on any
series of Debt Securities will be payable at the corporate trust office of the
Trustee, initially located at 225 Franklin Street, Boston, Massachusetts
02110; provided that, at the option of ProLogis, payment of interest may be
made by check mailed to the address of the Person entitled thereto as it
appears in the Security Register or by wire transfer of funds to such Person
to an account maintained within the United States (Sections 301, 305, 306, 307
and 1002).
 
  If any Interest Payment Date, Principal Payment Date or the Maturity Date
falls on a day that is not a Business Day, the required payment shall be made
on the next Business Day as if it were made on the date such payment was due
and no interest shall accrue on the amount so payable for the period from and
after such Interest Payment Date, Principal Payment Date or the Maturity Date,
as the case may be. "Business Day" means any day, other than a Saturday or
Sunday, on which banks in Boston, Massachusetts are not required or authorized
by law or executive order to close. Any interest not punctually paid or duly
provided for on any Interest Payment Date with respect to any Debt Security
("Defaulted Interest") will forthwith cease to be payable to the Holder on the
applicable Regular Record Date and may either be paid to the person in whose
name such Debt Security is registered at the close of business on a special
record date (the "Special Record Date") for the payment of such Defaulted
Interest to be fixed by the Trustee, notice of which shall be given to the
Holder of such Debt Security not less than 10 days prior to such Special
Record Date, or may be paid at any time in any other lawful manner, all as
more completely described in the Indenture (Section 307).
 
MERGER, CONSOLIDATION OR SALE
 
  ProLogis may consolidate with, or sell, lease or convey all or substantially
all of its assets to, or merge with or into, any other entity, provided that
(a) either ProLogis shall be the continuing entity, or the successor entity
(if other than ProLogis) formed by or resulting from any such consolidation or
merger or which shall have received the transfer of such assets is a Person
organized and existing under the laws of the United States or any State
thereof and shall expressly assume payment of the principal of (and premium or
Make-Whole Amount, if any) and any interest (including Additional Amounts, if
any) on all of the Debt Securities outstanding and the due and punctual
performance and observance of all of the covenants and conditions contained in
the Indenture; (b) immediately after giving effect to such transaction and
treating any indebtedness which becomes an obligation of ProLogis or any
Subsidiary as a result thereof as having been incurred by ProLogis or such
Subsidiary at the time of such transaction, no Event of Default under the
Indenture, and no event which, after notice or the lapse of time, or both,
would become such an Event of Default, shall have occurred and be continuing;
and (c) an officer's certificate and legal opinion covering such conditions
shall be delivered to the Trustee (Sections 801 and 803).
 
                                       7
<PAGE>
 
CERTAIN COVENANTS
 
  Limitations on Incurrence of Debt. ProLogis will not, and will not permit
any Subsidiary to, incur any Debt (as defined below) if, immediately after
giving effect to the incurrence of such additional Debt and the application of
the proceeds thereof, the aggregate principal amount of all outstanding Debt
of ProLogis and its Subsidiaries on a consolidated basis determined in
accordance with generally accepted accounting principles is greater than 60%
of the sum of (without duplication) (i) ProLogis' Total Assets (as defined
below) as of the end of the calendar quarter covered in ProLogis' Annual
Report on Form 10-K or Quarterly Report on Form 10-Q, as the case may be, most
recently filed with the Commission (or, if such filing is not permitted under
the Exchange Act, with the Trustee) prior to the incurrence of such additional
Debt and (ii) the purchase price of any real estate assets or mortgages
receivable acquired, and the amount of any securities offering proceeds
received (to the extent that such proceeds were not used to acquire real
estate assets or mortgages receivable or used to reduce Debt), by ProLogis or
any Subsidiary since the end of such calendar quarter, including those
proceeds obtained in connection with the incurrence of such additional Debt
(Section 1004).
 
  In addition to the foregoing limitation on the incurrence of Debt, ProLogis
will not, and will not permit any Subsidiary to, incur any Debt secured by any
mortgage, lien, charge, pledge, encumbrance or security interest of any kind
upon any of the property of ProLogis or any Subsidiary if, immediately after
giving effect to the incurrence of such additional Debt and the application of
the proceeds thereof, the aggregate principal amount of all outstanding Debt
of ProLogis and its Subsidiaries on a consolidated basis which is secured by
any mortgage, lien, charge, pledge, encumbrance or security interest on
property of ProLogis or any Subsidiary is greater than 40% of the sum of (i)
ProLogis' Total Assets as of the end of the calendar quarter covered in
ProLogis' Annual Report on Form 10-K or Quarterly Report on Form 10-Q, as the
case may be, most recently filed with the Commission (or if such filing is not
permitted under the Exchange Act, with the Trustee) prior to the incurrence of
such additional Debt and (ii) the purchase price of any real estate assets or
mortgages receivable acquired, and the amount of any securities offering
proceeds received (to the extent that such proceeds were not used to acquire
real estate assets or mortgages receivable or used to reduce Debt), by
ProLogis or any Subsidiary since the end of such calendar quarter, including
those proceeds obtained in connection with the incurrence of such additional
Debt (Section 1004).
 
  In addition to the foregoing limitations on the incurrence of Debt, no
Subsidiary may incur any unsecured Debt other than intercompany Debt
subordinate to the Debt Securities; provided, however, that ProLogis or a
Subsidiary may acquire an entity that becomes a Subsidiary that has unsecured
Debt if the incurrence of such Debt (including any guarantees of such Debt
assumed by ProLogis or any Subsidiary) was not intended to evade the foregoing
restrictions and the incurrence of such Debt (including any guarantees of such
Debt assumed by ProLogis or any Subsidiary) would otherwise be permitted under
the Indenture (Section 1004).
 
  ProLogis and its Subsidiaries may not at any time own Total Unencumbered
Assets equal to less than 150% of the aggregate outstanding principal amount
of the Unsecured Debt of ProLogis and its Subsidiaries on a consolidated basis
(Section 1004).
 
  In addition to the foregoing limitations on the incurrence of Debt, ProLogis
will not, and will not permit any Subsidiary to, incur any Debt if the ratio
of Consolidated Income Available for Debt Service (as defined below) to the
Annual Service Charge (as defined below) for the four consecutive fiscal
quarters most recently ended prior to the date on which such additional Debt
is to be incurred shall have been less than 1.5, on a pro forma basis after
giving effect thereto and to the application of the proceeds therefrom, and
calculated on the assumption that (i) such Debt and any other Debt incurred by
ProLogis and its Subsidiaries since the first day of such four-quarter period
and the application of the proceeds therefrom, including to refinance other
Debt, had occurred at the beginning of such period; (ii) the repayment or
retirement of any other Debt by ProLogis and its Subsidiaries since the first
day of such four-quarter period had been incurred, repaid or retired at the
beginning of such period (except that, in making such computation, the amount
of Debt under any revolving credit facility shall be computed based upon the
average daily balance of such Debt during such period); (iii) in the case of
Acquired Debt (as defined below) or Debt incurred in connection with any
acquisition since the first day of such
 
                                       8
<PAGE>
 
four-quarter period, the related acquisition had occurred as of the first day
of such period with the appropriate adjustments with respect to such
acquisition being included in such pro forma calculation; and (iv) in the case
of any acquisition or disposition by ProLogis or its Subsidiaries of any asset
or group of assets since the first day of such four-quarter period, whether by
merger, stock purchase or sale, or asset purchase or sale, such acquisition or
disposition or any related repayment of Debt had occurred as of the first day
of such period with the appropriate adjustments with respect to such
acquisition or disposition being included in such pro forma calculation
(Section 1004).
 
  Existence. Except as permitted under "--Merger, Consolidation or Sale,"
ProLogis will do or cause to be done all things necessary to preserve and keep
in full force and effect its existence, rights (charter and statutory) and
franchises; provided, however, that ProLogis shall not be required to preserve
any right or franchise if it determines that the preservation thereof is no
longer desirable in the conduct of its business and that the loss thereof is
not disadvantageous in any material respect to the Holders of the Debt
Securities (Section 1005).
 
  Maintenance of Properties. ProLogis will cause all of its properties used or
useful in the conduct of its business or the business of any Subsidiary to be
maintained and kept in good condition, repair and working order and supplied
with all necessary equipment and will cause to be made all necessary repairs,
renewals, replacements, betterments and improvements thereof, all as in the
judgment of ProLogis may be necessary so that the business carried on in
connection therewith may be properly and advantageously conducted at all
times; provided, however, that ProLogis and its Subsidiaries shall not be
prevented from selling or otherwise disposing for value its properties in the
ordinary course of business (Section 1006).
 
  Insurance. ProLogis will, and will cause each of its Subsidiaries to, keep
all of its insurable properties insured against loss or damage at least equal
to their then full insurable value with financially sound and reputable
insurance companies (Section 1007).
 
  Payment of Taxes and Other Claims. ProLogis will pay or discharge or cause
to be paid or discharged, before the same shall become delinquent, (i) all
taxes, assessments and governmental charges levied or imposed upon it or any
Subsidiary or upon the income, profits or property of ProLogis or any
Subsidiary and (ii) all lawful claims for labor, materials and supplies which,
if unpaid, might by law become a lien upon the property of ProLogis or any
Subsidiary; provided, however, that ProLogis shall not be required to pay or
discharge or cause to be paid or discharged any such tax, assessment, charge
or claim whose amount, applicability or validity is being contested in good
faith by appropriate proceedings (Section 1008).
 
  Provision of Financial Information. Whether or not ProLogis is subject to
Section 13 or 15(d) of the Exchange Act, ProLogis will, to the extent
permitted under the Exchange Act, file with the Commission the annual reports,
quarterly reports and other documents which ProLogis would have been required
to file with the Commission pursuant to such Section 13 or 15(d) (the
"Financial Statements") if ProLogis were so subject, such documents to be
filed with the Commission on or prior to the respective dates (the "Required
Filing Dates") by which ProLogis would have been required so to file such
documents if ProLogis were so subject. ProLogis will also in any event (x)
within 15 days of each Required Filing Date (i) transmit by mail to all
Holders of Debt Securities, as their names and addresses appear in the
Security Register, without cost to such Holders, copies of the annual reports
and quarterly reports which ProLogis would have been required to file with the
Commission pursuant to Section 13 or 15(d) of the Exchange Act if ProLogis
were subject to such Sections and (ii) file with the Trustee copies of the
annual reports, quarterly reports and other documents which ProLogis would
have been required to file with the Commission pursuant to Section 13 or 15(d)
of the Exchange Act if ProLogis were subject to such Sections and (y) if
filing such documents by ProLogis with the Commission is not permitted under
the Exchange Act, promptly upon written request and payment of the reasonable
cost of duplication and delivery, supply copies of such documents to any
prospective Holder (Section 1009).
 
EVENTS OF DEFAULT, NOTICE AND WAIVER
 
  The Indenture provides that the following events are "Events of Default"
with respect to any series of Debt Securities issued thereunder: (a) default
in the payment of any installment of interest or Additional Amounts
 
                                       9
<PAGE>
 
payable on any Debt Security of such series which continues for 30 days; (b)
default in the payment of the principal of (or premium or Make-Whole Amount,
if any, on) any Debt Security of such series at its Maturity; (c) default in
making any sinking fund payment as required for any Debt Security of such
series; (d) default in the performance of any other covenant of ProLogis
contained in the Indenture (other than a covenant added to the Indenture
solely for the benefit of a series of Debt Securities issued thereunder other
than such series), continued for 60 days after written notice as provided in
the Indenture; (e) default in the payment of an aggregate principal amount
exceeding $10,000,000 of any evidence of indebtedness of ProLogis or any
mortgage, indenture or other instrument under which such indebtedness is
issued or by which such indebtedness is secured, such default having occurred
after the expiration of any applicable grace period and having resulted in the
acceleration of the maturity of such indebtedness, but only if such
indebtedness is not discharged or such acceleration is not rescinded or
annulled; (f) the entry by a court of competent jurisdiction of one or more
judgments, orders or decrees against ProLogis or any of its Subsidiaries in an
aggregate amount (excluding amounts fully covered by insurance) in excess of
$10,000,000 and such judgments, orders or decrees remain undischarged,
unstayed and unsatisfied in an aggregate amount (excluding amounts fully
covered by insurance) in excess of $10,000,000 for a period of 30 consecutive
days; (g) certain events of bankruptcy, insolvency or reorganization, or court
appointment of a receiver, liquidator or trustee of ProLogis or any
Significant Subsidiary or for all or substantially all of either of its
property; and (h) any other Event of Default provided with respect to a
particular series of Debt Securities (Section 501). The term "Significant
Subsidiary" means each significant subsidiary (as defined in Regulation S-X
promulgated under the Securities Act) of ProLogis.
 
  If an Event of Default under the Indenture with respect to Debt Securities
of any series at the time Outstanding occurs and is continuing, then in every
such case, unless the principal of all of the Outstanding Debt Securities of
such series shall already have become due and payable, the Trustee or the
Holders of not less than 25% in principal amount of the Outstanding Debt
Securities of such series may declare the principal (or, if the Debt
Securities of such series are Original Issue Discount Securities or Indexed
Securities, such portion of the principal as may be specified in the terms
thereof) of, and the Make-Whole Amount, if any, on, all of the Debt Securities
of such series to be due and payable immediately by written notice thereof to
ProLogis (and to the Trustee if given by the Holders). However, at any time
after such a declaration of acceleration with respect to Debt Securities of
any series has been made, but before a judgment or decree for payment of the
money due has been obtained by the Trustee, the Holders of not less than a
majority in principal amount of the Outstanding Debt Securities of such series
may rescind and annul such declaration and its consequences if (a) ProLogis
shall have deposited with the Trustee all required payments of the principal
of (and premium or Make-Whole Amount, if any) and interest, and any Additional
Amounts, on the Debt Securities of such series, plus certain fees, expenses,
disbursements and advances of the Trustee and (b) all Events of Default, other
than the nonpayment of accelerated principal (or specified portion thereof and
the Make-Whole Amount, if any) or interest, with respect to Debt Securities of
such series have been cured or waived as provided in the Indenture (Section
502). The Indenture also provides that the Holders of not less than a majority
in principal amount of the Outstanding Debt Securities of any series may waive
any past default with respect to such series and its consequences, except a
default (x) in the payment of the principal of (or premium or Make-Whole
Amount, if any) or interest or Additional Amounts payable on any Debt Security
of such series or (y) in respect of a covenant or provision contained in the
Indenture that cannot be modified or amended without the consent of the Holder
of each Outstanding Debt Security affected thereby (Section 513).
 
  The Trustee is required to give notice to the Holders of Debt Securities
within 90 days of a default under the Indenture; provided, however, that the
Trustee may withhold notice to the Holders of any series of Debt Securities of
any default with respect to such series (except a default in the payment of
the principal of (or premium or Make-Whole Amount, if any) or interest or
Additional Amounts payable on any Debt Security of such series or in the
payment of any sinking fund installment in respect of any Debt Security of
such series) if the Responsible Officers of the Trustee consider such
withholding to be in the interest of such Holders (Section 601).
 
  The Indenture provides that no Holders of Debt Securities of any series may
institute any proceedings, judicial or otherwise, with respect to the
Indenture or for any remedy thereunder, except in the case of failure of
 
                                      10
<PAGE>
 
the Trustee, for 60 days, to act after it has received a written request to
institute proceedings in respect of an Event of Default from the Holders of
not less than 25% in principal amount of the Outstanding Debt Securities of
such series, as well as an offer of reasonable indemnity (Section 507). This
provision will not prevent, however, any Holder of Debt Securities from
instituting suit for the enforcement of payment of the principal of (and
premium or Make-Whole Amount, if any), interest on, and Additional Amounts
payable with respect to, such Debt Securities at the respective due dates
thereof (Section 508).
 
  Subject to provisions in the Indenture relating to its duties in case of
default, the Trustee is under no obligation to exercise any of its rights or
powers under the Indenture at the request or direction of any Holders of any
series of Debt Securities then Outstanding under the Indenture, unless such
Holders shall have offered to the Trustee reasonable security or indemnity
(Section 602). The Holders of not less than a majority in principal amount of
the Outstanding Debt Securities of any series shall have the right to direct
the time, method and place of conducting any proceeding for any remedy
available to the Trustee, or of exercising any trust or power conferred upon
the Trustee. However, the Trustee may refuse to follow any direction which is
in conflict with any law or the Indenture, which may involve the Trustee in
personal liability or which may be unduly prejudicial to the Holders of Debt
Securities of such series not joining therein (Section 512).
 
  Within 120 days after the close of each fiscal year, ProLogis must deliver
to the Trustee a certificate, signed by one of several specified officers,
stating whether or not such officer has knowledge of any default under the
Indenture and, if so, specifying each such default and the nature and status
thereof (Section 1010).
 
MODIFICATION OF THE INDENTURE
 
  Modifications and amendments of the Indenture may be made with the consent
of the Holders of not less than a majority in principal amount of all
Outstanding Debt Securities which are affected by such modification or
amendment; provided, however, that no such modification or amendment may,
without the consent of the Holder of each such Debt Security affected thereby,
(a) change the Stated Maturity of the principal of (or premium or Make-Whole
Amount, if any), or any installment of principal of or interest or Additional
Amounts payable on, any such Debt Security; (b) reduce the principal amount
of, or the rate or amount of interest on, or any premium or Make-Whole Amount
payable on redemption of, or any Additional Amounts payable with respect to,
any such Debt Security, or reduce the amount of principal of an Original Issue
Discount Security or Make-Whole Amount, if any, that would be due and payable
upon declaration of acceleration of the maturity thereof or would be provable
in bankruptcy, or adversely affect any right of repayment of the Holder of any
such Debt Security; (c) change the Place of Payment, or the coin or currency,
for payment of principal of (and premium or Make-Whole Amount, if any), or
interest on, or any Additional Amounts payable with respect to, any such Debt
Security; (d) impair the right to institute suit for the enforcement of any
payment on or with respect to any such Debt Security; (e) reduce the above-
stated percentage of Outstanding Debt Securities of any series necessary to
modify or amend the Indenture, to waive compliance with certain provisions
thereof or certain defaults and consequences thereunder or to reduce the
quorum or voting requirements set forth in the Indenture; or (f) modify any of
the foregoing provisions or any of the provisions relating to the waiver of
certain past defaults or certain covenants, except to increase the required
percentage to effect such action or to provide that certain other provisions
may not be modified or waived without the consent of the Holder of such Debt
Security (Section 902).
 
  The Holders of not less than a majority in principal amount of Outstanding
Debt Securities have the right to waive compliance by ProLogis with certain
covenants in the Indenture (Section 1012).
 
  Modifications and amendments of the Indenture may be made by ProLogis and
the Trustee without the consent of any Holder of Debt Securities for any of
the following purposes: (i) to evidence the succession of another Person to
ProLogis as obligor under the Indenture; (ii) to add to the covenants of
ProLogis for the benefit of the Holders of all or any series of Debt
Securities or to surrender any right or power conferred upon ProLogis in the
Indenture; (iii) to add Events of Default for the benefit of the Holders of
all or any series of Debt
 
                                      11
<PAGE>
 
Securities; (iv) to add or change any provisions of the Indenture to
facilitate the issuance of, or to liberalize certain terms of, Debt Securities
in bearer form, or to permit or facilitate the issuance of Debt Securities in
uncertificated form, provided that such action shall not adversely affect the
interests of the Holders of the Debt Securities of any series in any material
respect; (v) to change or eliminate any provisions of the Indenture, provided
that any such change or elimination shall become effective only when there are
no Debt Securities Outstanding of any series created prior thereto which are
entitled to the benefit of such provision; (vi) to secure the Debt Securities;
(vii) to establish the form or terms of Debt Securities of any series and any
related coupons; (viii) to provide for the acceptance of appointment by a
successor Trustee or facilitate the administration of the trusts under the
Indenture by more than one Trustee; (ix) to cure any ambiguity, defect or
inconsistency in the Indenture or to make any other changes, provided that in
each case, such action shall not adversely affect the interests of Holders of
Debt Securities of any series in any material respect; (x) to close the
Indenture with respect to the authentication and delivery of additional series
of Debt Securities or to qualify, or maintain qualification of, the Indenture
under the TIA; or (xi) to supplement any of the provisions of the Indenture to
the extent necessary to permit or facilitate defeasance and discharge of any
series of such Debt Securities, provided that such action shall not adversely
affect the interests of the Holders of the Debt Securities of any series in
any material respect (Section 901).
 
  The Indenture provides that in determining whether the Holders of the
requisite principal amount of Outstanding Debt Securities of a series have
given any request, demand, authorization, direction, notice, consent or waiver
thereunder or whether a quorum is present at a meeting of Holders of Debt
Securities, (i) the principal amount of an Original Issue Discount Security
that shall be deemed to be outstanding shall be the amount of the principal
thereof that would be due and payable as of the date of such determination
upon declaration of acceleration of the maturity thereof; (ii) the principal
amount of a Debt Security denominated in a Foreign Currency that shall be
deemed outstanding shall be the United States dollar equivalent, determined on
the issue date for such Debt Security, of the principal amount (or, in the
case of an Original Issue Discount Security, the United States dollar
equivalent on the issue date of such Debt Security of the amount determined as
provided in (i) above); (iii) the principal amount of an Indexed Security that
shall be deemed outstanding shall be the principal face amount of such Indexed
Security at original issuance, unless otherwise provided with respect to such
Indexed Security pursuant to Section 301 of the Indenture; and (iv) Debt
Securities owned by ProLogis or any other obligor upon the Debt Securities or
any Affiliate of ProLogis or of such other obligor shall be disregarded
(Section 101).
 
  The Indenture contains provisions for convening meetings of the Holders of
Debt Securities of a series (Section 1501). A meeting may be called at any
time by the Trustee, and also, upon request, by ProLogis or the Holders of at
least 10% in principal amount of the Outstanding Debt Securities of such
series, in any such case upon notice given as provided in the Indenture
(Section 1502). Except for any consent that must be given by the Holder of
each Debt Security affected by certain modifications and amendments of the
Indenture, any resolution presented at a meeting or adjourned meeting duly
reconvened at which a quorum is present may be adopted by the affirmative vote
of the Holders of a majority in principal amount of the Outstanding Debt
Securities of such series; provided, however, that, except as referred to
above, any resolution with respect to any request, demand, authorization,
direction, notice, consent, waiver or other action that may be made, given or
taken by the Holders of a specified percentage, which is less than a majority,
in principal amount of the Outstanding Debt Securities of a series may be
adopted at a meeting or adjourned meeting duly reconvened at which a quorum is
present by the affirmative vote of the Holders of such specified percentage in
principal amount of the Outstanding Debt Securities of such series. Any
resolution passed or decision taken at any meeting of Holders of Debt
Securities of any series duly held in accordance with the Indenture will be
binding on all Holders of Debt Securities of such series. The quorum at any
meeting called to adopt a resolution, and at any reconvened meeting, will be
Persons holding or representing a majority in principal amount of the
Outstanding Debt Securities of a series; provided, however, that if any action
is to be taken at such meeting with respect to a consent or waiver which may
be given by the Holders of not less than a specified percentage in principal
amount of the Outstanding Debt Securities of a series, the Persons holding or
representing such specified percentage in principal amount of the Outstanding
Debt Securities of such series will constitute a quorum (Section 1504).
 
                                      12
<PAGE>
 
  Notwithstanding the foregoing provisions, if any action is to be taken at a
meeting of Holders of Debt Securities of any series with respect to any
request, demand, authorization, direction, notice, consent, waiver or other
action that the Indenture expressly provides may be made, given or taken by
the Holders of a specified percentage in principal amount of all Outstanding
Debt Securities affected thereby, or of the Holders of such series and one or
more additional series: (i) there shall be no minimum quorum requirement for
such meeting and (ii) the principal amount of the Outstanding Debt Securities
of such series that vote in favor of such request, demand, authorization,
direction, notice, consent, waiver or other action shall be taken into account
in determining whether such request, demand, authorization, direction, notice,
consent, waiver or other action has been made, given or taken under the
Indenture (Section 1504).
 
  Any request, demand, authorization, direction, notice, consent, waiver or
other action provided by the Indenture to be given or taken by a specified
percentage in principal amount of the Holders of any or all series of Debt
Securities may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such specified percentage of Holders in
person or by agent duly appointed in writing; and, except as otherwise
expressly provided in the Indenture, such action shall become effective when
such instrument or instruments are delivered to the Trustee. Proof of
execution of any instrument or of a writing appointing any such agent shall be
sufficient for any purpose of the Indenture and (subject to Article Six of the
Indenture) conclusive in favor of the Trustee and ProLogis, if made in the
manner specified above (Section 1507).
 
DISCHARGE, DEFEASANCE AND COVENANT DEFEASANCE
 
  ProLogis may discharge certain obligations to Holders of any series of Debt
Securities that have not already been delivered to the Trustee for
cancellation and that either have become due and payable or will become due
and payable within one year (or scheduled for redemption within one year) by
irrevocably depositing with the Trustee, in trust, funds in such currency or
currencies, currency unit or units or composite currency or currencies in
which such Debt Securities are payable in an amount sufficient to pay the
entire indebtedness on such Debt Securities in respect of principal (and
premium or Make-Whole Amount, if any) and interest and Additional Amounts
payable to the date of such deposit (if such Debt Securities have become due
and payable) or to the Stated Maturity or Redemption Date, as the case may be
(Section 1401).
 
  The Indenture provides that, if the provisions of Article Fourteen are made
applicable to the Debt Securities of or within any series pursuant to Section
301 of the Indenture, ProLogis may elect either (a) to defease and be
discharged from any and all obligations with respect to such Debt Securities
(except for the obligation to pay Additional Amounts, if any, upon the
occurrence of certain events of tax, assessment or governmental charge with
respect to payments on such Debt Securities and the obligations to register
the transfer or exchange of such Debt Securities, to replace temporary or
mutilated, destroyed, lost or stolen Debt Securities, to maintain an office or
agency in respect of such Debt Securities and to hold moneys for payment in
trust) ("defeasance") (Section 1402) or (b) to be released from its
obligations with respect to such Debt Securities under Sections 1004 to 1009,
inclusive, of the Indenture (being the restrictions described under "--Certain
Covenants") and, if provided pursuant to Section 301 of the Indenture, its
obligations with respect to any other covenant, and any omission to comply
with such obligations shall not constitute a default or an Event of Default
with respect to such Debt Securities ("covenant defeasance") (Section 1403),
in either case upon the irrevocable deposit by ProLogis with the Trustee, in
trust, of an amount, in such currency or currencies, currency unit or units or
composite currency or currencies in which such Debt Securities are payable at
Stated Maturity, or Government Obligations (as defined below), or both,
applicable to such Debt Securities which through the scheduled payment of
principal and interest in accordance with their terms will provide money in an
amount sufficient to pay the principal of (and premium or Make-Whole Amount,
if any) and interest on such Debt Securities, and any mandatory sinking fund
or analogous payments thereon, on the scheduled due dates therefor (Section
1404).
 
  Such a trust may only be established if, among other things, ProLogis has
delivered to the Trustee an Opinion of Counsel (as specified in the Indenture)
to the effect that the Holders of such Debt Securities will not recognize
income, gain or loss for United States federal income tax purposes as a result
of such defeasance or covenant defeasance and will be subject to United States
federal income tax on the same amounts, in the same
 
                                      13
<PAGE>
 
manner and at the same times as would have been the case if such defeasance or
covenant defeasance had not occurred, and such Opinion of Counsel, in the case
of defeasance, must refer to and be based upon a ruling of the Internal
Revenue Service or a change in applicable United States federal income tax law
occurring after the date of the Indenture (Section 1404).
 
  "Government Obligations" means securities which are (i) direct obligations
of the United States of America or the government which issued the Foreign
Currency in which the Debt Securities of a particular series are payable, for
the payment of which its full faith and credit is pledged or (ii) obligations
of a Person controlled or supervised by and acting as an agency or
instrumentality of the United States of America or such government which
issued the Foreign Currency in which the Debt Securities of such series are
payable, the payment of which is unconditionally guaranteed as a full faith
and credit obligation by the United States of America or such other
government, which, in either case, are not callable or redeemable at the
option of the issuer thereof, and shall also include a depository receipt
issued by a bank or trust company as custodian with respect to any such
Government Obligation or a specific payment of interest on or principal of any
such Government Obligation held by such custodian for the account of the
holder of a depository receipt, provided that (except as required by law) such
custodian is not authorized to make any deduction from the amount payable to
the holder of such depository receipt from any amount received by the
custodian in respect of the Government Obligation or the specific payment of
interest on or principal of the Government Obligation evidenced by such
depository receipt (Section 101).
 
  Unless otherwise provided in the applicable Prospectus Supplement, if after
ProLogis has deposited funds and/or Government Obligations to effect
defeasance or covenant defeasance with respect to Debt Securities of any
series, (a) the Holder of a Debt Security of such series is entitled to, and
does, elect pursuant to Section 301 of the Indenture or the terms of such Debt
Security to receive payment in a currency, currency unit or composite currency
other than that in which such deposit has been made in respect of such Debt
Security or (b) a Conversion Event (as defined below) occurs in respect of the
currency, currency unit or composite currency in which such deposit has been
made, the indebtedness represented by such Debt Security shall be deemed to
have been, and will be, fully discharged and satisfied through the payment of
the principal of (and premium or Make-Whole Amount, if any) and interest on
such Debt Security as they become due out of the proceeds yielded by
converting the amount so deposited in respect of such Debt Security into the
currency, currency unit or composite currency in which such Debt Security
becomes payable as a result of such election or such cessation of usage based
on the applicable market exchange rate (Section 1405). "Conversion Event"
means the cessation of use of (i) a currency, currency unit or composite
currency (other than the ECU or other currency unit) both by the government of
the country which issued such currency and for the settlement of transactions
by a central bank or other public institutions of or within the international
banking community, (ii) the ECU both within the European Monetary System and
for the settlement of transactions by public institutions of or within the
European Communities or (iii) any currency unit or composite currency other
than the ECU for the purposes for which it was established. Unless otherwise
provided in the applicable Prospectus Supplement, all payments of principal of
(and premium or Make-Whole Amount, if any) and interest on any Debt Security
that is payable in a Foreign Currency that ceases to be used by its government
of issuance shall be made in United States dollars (Section 101).
 
  In the event ProLogis effects covenant defeasance with respect to any Debt
Securities and such Debt Securities are declared due and payable because of
the occurrence of any Event of Default other than the Event of Default
described in clause (d) under "--Events of Default, Notice and Waiver" with
respect to Sections 1004 to 1009, inclusive, of the Indenture (which Sections
would no longer be applicable to such Debt Securities) or described in clause
(g) under "--Events of Default, Notice and Waiver" with respect to any other
covenant as to which there has been covenant defeasance, the amount in such
currency, currency unit or composite currency in which such Debt Securities
are payable plus Government Obligations on deposit with the Trustee, will be
sufficient to pay amounts due on such Debt Securities at the time of their
Stated Maturity but may not be sufficient to pay amounts due on such Debt
Securities at the time of the acceleration resulting from such Event of
Default. However, ProLogis would remain liable to make payment of such amounts
due at the time of acceleration.
 
                                      14
<PAGE>
 
  The applicable Prospectus Supplement may further describe the provisions, if
any, permitting such defeasance or covenant defeasance, including any
modifications to the provisions described above, with respect to the Debt
Securities of or within a particular series.
 
REGISTRATION AND TRANSFER
 
  Subject to certain limitations imposed upon Debt Securities issued in book-
entry form, the Debt Securities of any series will be exchangeable for other
Debt Securities of the same series and of a like aggregate principal amount
and tenor of different authorized denominations upon surrender of such Debt
Securities at the corporate trust office of the Trustee referred to above. In
addition, subject to certain limitations imposed upon Debt Securities issued
in book-entry form, the Debt Securities of any series may be surrendered for
conversion or registration of transfer thereof at the corporate trust office
of the Trustee referred to above. Every Debt Security surrendered for
registration of transfer or exchange shall be duly endorsed or accompanied by
a written instrument of transfer. No service charge will be made for any
registration of transfer or exchange of any Debt Securities, but ProLogis may
require payment of a sum sufficient to cover any tax or other governmental
charge payable in connection therewith (Section 305). ProLogis may at any time
designate a transfer agent (in addition to the Trustee) with respect to any
series of Debt Securities. If ProLogis has designated such a transfer agent or
transfer agents, ProLogis may at any time rescind the designation of any such
transfer agent or approve a change in the location at which any such transfer
agent acts, except that ProLogis will be required to maintain a transfer agent
in each Place of Payment for such series (Section 1002).
 
  Neither ProLogis nor the Trustee shall be required to (i) issue, register
the transfer of or exchange Debt Securities of any series during a period
beginning at the opening of business 15 days before any selection of Debt
Securities of that series to be redeemed and ending at the close of business
on the day of mailing of the relevant notice of redemption; (ii) register the
transfer of or exchange any Debt Security, or portion thereof, called for
redemption, except the unredeemed portion of any Debt Security being redeemed
in part; or (iii) issue, register the transfer of or exchange any Debt
Security which has been surrendered for repayment at the option of the Holder,
except the portion, if any, of such Debt Security not to be so repaid (Section
305).
 
BOOK-ENTRY PROCEDURES
 
  The Debt Securities of a series may be issued in whole or in part in the
form of one or more global securities ("Global Securities") that will be
deposited with, or on behalf of, a depository (the "Depository") identified in
the applicable Prospectus Supplement relating to such series. Global
Securities, if any, are expected to be deposited with The Depository Trust
Company, as Depository. Global Securities may be issued in fully registered
form and may be issued in either temporary or permanent form. Unless and until
it is exchanged in whole or in part for the individual Debt Securities
represented thereby, a Global Security may not be transferred except as a
whole by the Depository for such Global Security to a nominee of such
Depository or by a nominee of such Depository to such Depository or another
nominee of such Depository or by the Depository or any nominee of such
Depository to a successor Depository or any nominee of such successor.
 
  The specific terms of the depository arrangement with respect to a series of
Debt Securities will be described in the applicable Prospectus Supplement
relating to such series. Unless otherwise indicated in the applicable
Prospectus Supplement, ProLogis anticipates that the following provisions will
apply to depository arrangements.
 
  Upon the issuance of a Global Security, the Depository for such Global
Security or its nominee will credit on its book-entry registration and
transfer system the respective principal amounts of the individual Debt
Securities represented by such Global Security to the accounts of persons that
have accounts with such Depository ("Participants"). Such accounts shall be
designated by the underwriters, dealers or agents with respect to such Debt
Securities or by ProLogis if such Debt Securities are offered and sold
directly by ProLogis. Ownership of beneficial interests in a Global Security
will be limited to Participants or persons that may hold interests through
Participants. Ownership of beneficial interests in such Global Security will
be shown on, and the transfer of that ownership will be effected only through,
records maintained by the applicable Depository or
 
                                      15
<PAGE>
 
its nominee (with respect to beneficial interests of Participants) and records
of Participants (with respect to beneficial interests of persons who hold
through Participants). The laws of some states require that certain purchasers
of securities take physical delivery of such securities in definitive form.
Such limits and laws may impair the ability to own, pledge or transfer
beneficial interests in a Global Security.
 
  So long as the Depository for a Global Security or its nominee is the
registered owner of such Global Security, such Depository or such nominee, as
the case may be, will be considered the sole owner or holder of the Debt
Securities represented by such Global Security for all purposes under the
Indenture. Except as provided below or in the applicable Prospectus
Supplement, owners of beneficial interests in a Global Security will not be
entitled to have any of the individual Debt Securities of the series
represented by such Global Security registered in their names, will not
receive or be entitled to receive physical delivery of any such Debt
Securities of such series in definitive form and will not be considered the
owners or holders thereof under the Indenture.
 
  Payments of principal of, any premium or Make-Whole Amount and any interest
on, or any Additional Amounts payable with respect to, individual Debt
Securities represented by a Global Security registered in the name of a
Depository or its nominee will be made to the Depository or its nominee, as
the case may be, as the registered owner of the Global Security representing
such Debt Securities. None of ProLogis, the Trustee, any Paying Agent or the
Security Registrar for such Debt Securities will have any responsibility or
liability for any aspect of the records relating to or payments made on
account of beneficial ownership interests in the Global Security for such Debt
Securities or for maintaining, supervising or reviewing any records relating
to such beneficial ownership interests.
 
  ProLogis expects that the Depository for a series of Debt Securities or its
nominee, upon receipt of any payment of principal, premium, Make-Whole Amount
or interest in respect of a permanent Global Security representing any of such
Debt Securities, immediately will credit Participants' accounts with payments
in amounts proportionate to their respective beneficial interests in the
principal amount of such Global Security for such Debt Securities as shown on
the records of such Depository or its nominee. ProLogis also expects that
payments by Participants to owners of beneficial interests in such Global
Security held through such Participants will be governed by standing
instructions and customary practices, as is the case with securities held for
the account of customers in bearer form or registered in "street name". Such
payments will be the responsibility of such Participants.
 
  If a Depository for a series of Debt Securities is at any time unwilling,
unable or ineligible to continue as depository and a successor depository is
not appointed by ProLogis within 90 days, ProLogis will issue individual Debt
Securities of such series in exchange for the Global Security representing
such series of Debt Securities. In addition, ProLogis may, at any time and in
its sole discretion, subject to any limitations described in the applicable
Prospectus Supplement relating to such Debt Securities, determine not to have
any Debt Securities of such series represented by one or more Global
Securities and, in such event, will issue individual Debt Securities of such
series in exchange for the Global Security or Securities representing such
series of Debt Securities. Individual Debt Securities of such series so issued
will be issued in denominations, unless otherwise specified by ProLogis, of
$1,000 and integral multiples thereof.
 
CERTAIN DEFINITIONS
 
  "Acquired Debt" means Debt of a Person (i) existing at the time such Person
becomes a Subsidiary or (ii) assumed in connection with the acquisition of
assets from such Person, in each case, other than Debt incurred in connection
with, or in contemplation of, such Person becoming a Subsidiary or such
acquisition. Acquired Debt shall be deemed to be incurred on the date of the
related acquisition of assets from any Person or the date the acquired Person
becomes a Subsidiary.
 
  "Annual Service Charge" as of any date means the maximum amount which is
payable in any period for interest on, and original issue discount of, Debt of
ProLogis and its Subsidiaries and the amount of dividends which are payable in
respect of any Disqualified Stock.
 
                                      16
<PAGE>
 
  "Capital Stock" means, with respect to any Person, any capital stock
(including preferred stock), shares, interests, participations or other
ownership interests (however designated) of such Person and any rights (other
than debt securities convertible into or exchangeable for corporate stock),
warrants or options to purchase any thereof.
 
  "Consolidated Income Available for Debt Service" for any period means
Earnings from Operations (as defined below) of ProLogis and its Subsidiaries
plus amounts which have been deducted, and minus amounts which have been
added, for the following (without duplication): (a) interest on Debt of
ProLogis and its Subsidiaries, (b) provision for taxes of ProLogis and its
Subsidiaries based on income, (c) amortization of debt discount, (d)
provisions for gains and losses on properties and property depreciation and
amortization, (e) the effect of any noncash charge resulting from a change in
accounting principles in determining Earnings from Operations for such period
and (f) amortization of deferred charges.
 
  "Debt" of ProLogis or any Subsidiary means any indebtedness of ProLogis or
any Subsidiary, whether or not contingent, in respect of (i) borrowed money or
evidenced by bonds, notes, debentures or similar instruments, (ii)
indebtedness secured by any mortgage, pledge, lien, charge, encumbrance or any
security interest existing on property owned by ProLogis or any Subsidiary,
(iii) the reimbursement obligations, contingent or otherwise, in connection
with any letters of credit actually issued or amounts representing the balance
deferred and unpaid of the purchase price of any property or services, except
any such balance that constitutes an accrued expense or trade payable, or all
conditional sale obligations or obligations under any title retention
agreement, (iv) the principal amount of all obligations of ProLogis or any
Subsidiary with respect to redemption, repayment or other repurchase of any
Disqualified Stock or (v) any lease of property by ProLogis or any Subsidiary
as lessee which is reflected on ProLogis' Consolidated Balance Sheet as a
capitalized lease in accordance with generally accepted accounting principles,
to the extent, in the case of items of indebtedness under (i) through (iii)
above, that any such items (other than letters of credit) would appear as a
liability on ProLogis' Consolidated Balance Sheet in accordance with generally
accepted accounting principles, and also includes, to the extent not otherwise
included, any obligation by ProLogis or any Subsidiary to be liable for, or to
pay, as obligor, guarantor or otherwise (other than for purposes of collection
in the ordinary course of business), Debt of another Person (other than
ProLogis or any Subsidiary) (it being understood that Debt shall be deemed to
be incurred by ProLogis or any Subsidiary whenever ProLogis or such Subsidiary
shall create, assume, guarantee or otherwise become liable in respect
thereof).
 
  "Disqualified Stock" means, with respect to any Person, any Capital Stock of
such Person which by the terms of such Capital Stock (or by the terms of any
security into which it is convertible or for which it is exchangeable or
exercisable), upon the happening of any event or otherwise (i) matures or is
mandatorily redeemable, pursuant to a sinking fund obligation or otherwise,
(ii) is convertible into or exchangeable or exercisable for Debt or
Disqualified Stock or (iii) is redeemable at the option of the holder thereof,
in whole or in part, in each case on or prior to the Stated Maturity of the
series of Debt Securities.
 
  "Earnings from Operations" for any period means net earnings excluding gains
and losses on sales of investments, net, as reflected in the financial
statements of ProLogis and its Subsidiaries for such period determined on a
consolidated basis in accordance with generally accepted accounting
principles.
 
  "Encumbrance" means any mortgage, pledge, lien, charge, encumbrance or any
security interest existing on property owned by ProLogis or any Subsidiary
securing indebtedness for borrowed money, other than a Permitted Encumbrance.
 
  "Permitted Encumbrances" means leases, Encumbrances securing taxes,
assessments and similar charges, mechanics liens and other similar
Encumbrances.
 
  "Subsidiary" means, with respect to any Person, any corporation or other
entity of which a majority of (a) the voting power of the voting equity
securities or (b) in the case of a partnership or any other entity other than
a corporation, the outstanding equity interest of which are owned, directly or
indirectly, by such Person. For the
 
                                      17
<PAGE>
 
purposes of this definition, "voting equity securities" means equity
securities having voting power for the election of directors, whether at all
times or only so long as no senior class of security has such voting power by
reason of any contingency.
 
  "Total Assets" as of any date means the sum of (i) Undepreciated Real Estate
Assets and (ii) all other assets of ProLogis and its Subsidiaries determined
in accordance with generally accepted accounting principles (but excluding
accounts receivable and intangibles).
 
  "Total Unencumbered Assets" means the sum of (i) those Undepreciated Real
Estate Assets not subject to an Encumbrance and (ii) the value (determined in
accordance with generally accepted accounting principles) of all other assets
(other than accounts receivable and intangibles) of ProLogis and its
Subsidiaries not subject to an Encumbrance.
 
  "Undepreciated Real Estate Assets" as of any date means the cost (original
cost plus capital improvements) of real estate assets of ProLogis and its
Subsidiaries on such date, before depreciation and amortization determined on
a consolidated basis in accordance with generally accepted accounting
principles.
 
  "Unsecured Debt" means Debt of the types described in clauses (i), (iii) and
(iv) of the definition thereof which is not secured by any mortgage, lien,
charge, pledge or security interest of any kind upon any of the properties of
ProLogis or any Subsidiary.
 
NO PERSONAL LIABILITY
 
  No past, present or future trustee, officer, employee or shareholder, as
such, of ProLogis or any successor thereof shall have any liability for any
obligations of ProLogis under the Debt Securities or the Indenture or for any
claim based on, in respect of, or by reason of, such obligations or their
creation. Each Holder of Debt Securities by accepting such Debt Securities
waives and releases all such liability. The waiver and release are part of the
consideration for the issue of Debt Securities (Section 111).
 
TRUSTEE
 
  The Indenture provides that there may be more than one Trustee thereunder,
each with respect to one or more series of Debt Securities. Any Trustee under
the Indenture may resign or be removed with respect to one or more series of
Debt Securities, and a successor Trustee may be appointed to act with respect
to such series (Section 608). In the event that two or more persons are acting
as Trustee with respect to different series of Debt Securities, each such
Trustee shall be a Trustee of a trust under the Indenture separate and apart
from the trust administered by any other Trustee (Sections 101 and 609), and,
except as otherwise indicated herein, any action described herein to be taken
by the Trustee may be taken by each such Trustee with respect to, and only
with respect to, the one or more series of Debt Securities for which it is
Trustee under the Indenture.
 
                        DESCRIPTION OF PREFERRED SHARES
 
GENERAL
 
  Subject to limitations prescribed by Maryland law and the Declaration of
Trust, the Board is authorized to issue, from the authorized but unissued
shares of beneficial interest of ProLogis, Preferred Shares in series and to
establish from time to time the number of Preferred Shares to be included in
such series and to fix the designation and any preferences, conversion and
other rights, voting powers, restrictions, limitations as to dividends,
qualifications and terms and conditions of redemption of the shares of each
series, and such other subjects or matters as may be fixed by resolution of
the Board or duly authorized committee thereof. At April 30, 1998, 5,400,000
Series A Preferred Shares were issued and outstanding and held of record by
approximately 315 shareholders, 7,947,100 Series B Preferred Shares were
issued and outstanding and held of record by approximately 29 shareholders,
2,000,000 Series C Preferred Shares were issued and outstanding and held of
 
                                      18
<PAGE>
 
record by six shareholders and 10,000,000 Series D Preferred Shares were
issued and outstanding and held of record by one shareholder.
 
  Reference is made to the Prospectus Supplement relating to the series of
Preferred Shares offered thereby for the specific terms thereof, including:
 
    (1) The title and stated value of such series of Preferred Shares;
 
    (2) The number of shares of such series of Preferred Shares offered, the
  liquidation preference per share and the offering price of such Preferred
  Shares;
 
    (3) The dividend rate(s), period(s) and/or payment date(s) or method(s)
  of calculation thereof applicable to Preferred Shares of such series;
 
    (4) The date from which dividends on Preferred Shares of such series
  shall cumulate, if applicable;
 
    (5) The procedures for any auction and remarketing, if any, for Preferred
  Shares of such series;
 
    (6) The provision for a sinking fund, if any, for Preferred Shares of
  such series;
 
    (7) The provision for redemption, if applicable, of Preferred Shares of
  such series;
 
    (8) Any listing of such series of Preferred Shares on any securities
  exchange;
 
    (9) The terms and conditions, if applicable, upon which Preferred Shares
  of such series will be convertible into Common Shares, including the
  conversion price (or manner of calculation thereof);
 
    (10) Whether interests in Preferred Shares of such series will be
  represented by Global Securities;
 
    (11) Any other specific terms, preferences, rights, limitations or
  restrictions of such series of Preferred Shares;
 
    (12) A discussion of federal income tax considerations applicable to
  Preferred Shares of such series;
 
    (13) The relative ranking and preferences of Preferred Shares of such
  series as to dividend rights and rights upon liquidation, dissolution or
  winding up of the affairs of ProLogis;
 
    (14) Any limitations on issuance of any series of Preferred Shares
  ranking senior to or on a parity with such series of Preferred Shares as to
  dividend rights and rights upon liquidation, dissolution or winding up of
  the affairs of ProLogis; and
 
    (15) Any limitations on direct or beneficial ownership and restrictions
  on transfer of Preferred Shares of such series, in each case as may be
  appropriate to preserve the status of ProLogis as a REIT.
 
RANK
 
  Unless otherwise specified in the applicable Prospectus Supplement, the
Preferred Shares of each series will, with respect to dividend rights and
rights upon liquidation, dissolution or winding up of the affairs of ProLogis,
rank (i) senior to all classes or series of Common Shares, and to all equity
securities ranking junior to such series of Preferred Shares; (ii) on a parity
with all equity securities issued by ProLogis the terms of which specifically
provide that such equity securities rank on a parity with Preferred Shares of
such series; and (iii) junior to all equity securities issued by ProLogis the
terms of which specifically provide that such equity securities rank senior to
Preferred Shares of such series.
 
DIVIDENDS
 
  Holders of Preferred Shares of each series shall be entitled to receive,
when, as and if declared by the Board, out of assets of ProLogis legally
available for payment, cash dividends at such rates and on such dates as will
be set forth in the applicable Prospectus Supplement. Each such dividend shall
be payable to holders of record as they appear on the share transfer books of
ProLogis on such record dates as shall be fixed by the Board.
 
  Dividends on any series of the Preferred Shares may be cumulative or
noncumulative, as provided in the applicable Prospectus Supplement. Dividends,
if cumulative, will be cumulative from and after the date set forth
 
                                      19
<PAGE>
 
in the applicable Prospectus Supplement. If the Board fails to declare a
dividend payable on a dividend payment date on any series of the Preferred
Shares for which dividends are noncumulative, then the holders of such series
of the Preferred Shares will have no right to receive a dividend in respect of
the dividend period ending on such dividend payment date, and ProLogis will
have no obligation to pay the dividend accrued for such period, whether or not
dividends on such series are declared payable on any future dividend payment
date.
 
  If Preferred Shares of any series are outstanding, no full dividends shall
be declared or paid or set apart for payment on the Preferred Shares of
ProLogis of any other series ranking, as to dividends, on a parity with or
junior to the Preferred Shares of such series for any period unless (i) if
such series of Preferred Shares has a cumulative dividend, full cumulative
dividends have been or contemporaneously are declared and paid or declared and
a sum sufficient for the payment thereof set apart for such payment on the
Preferred Shares of such series for all past dividend periods and the then
current dividend period or (ii) if such series of Preferred Shares does not
have a cumulative dividend, full dividends for the then current dividend
period have been or contemporaneously are declared and paid or declared and a
sum sufficient for the payment thereof set apart for such payment on the
Preferred Shares of such series. When dividends are not paid in full (or a sum
sufficient for such full payment is not so set apart) upon the Preferred
Shares of any series and the shares of any other series of Preferred Shares
ranking on a parity as to dividends with the Preferred Shares of such series,
all dividends declared upon Preferred Shares of such series and any other
series of Preferred Shares ranking on a parity as to dividends with such
Preferred Shares shall be declared pro rata so that the amount of dividends
declared per share on the Preferred Shares of such series and such other
series of Preferred Shares shall in all cases bear to each other the same
ratio that accrued dividends per share on the Preferred Shares of such series
(which shall not include any cumulation in respect of unpaid dividends for
prior dividend periods if such series of Preferred Shares does not have a
cumulative dividend) and such other series of Preferred Shares bear to each
other. No interest, or sum of money in lieu of interest, shall be payable in
respect of any dividend payment or payments on Preferred Shares of such series
which may be in arrears.
 
  Except as provided in the immediately preceding paragraph, unless (i) if
such series of Preferred Shares has a cumulative dividend, full cumulative
dividends on the Preferred Shares of such series have been or
contemporaneously are declared and paid or declared and a sum sufficient of
the payment thereof set apart for payment for all past dividend periods and
the then current dividend period or (ii) if such series of Preferred Shares
does not have a cumulative dividend, full dividends on the Preferred Shares of
such series have been or contemporaneously are declared and paid or declared
and a sum sufficient for the payment thereof set apart for payment for the
then current dividend period, no dividends (other than in Common Shares or
other capital shares ranking junior to the Preferred Shares of such series as
to dividends and upon liquidation) shall be declared or paid or set aside for
payment or other distribution shall be declared or made upon the Common Shares
or any other capital shares of ProLogis ranking junior to or on a parity with
the Preferred Shares of such series as to dividends or upon liquidation be
redeemed, purchased or otherwise acquired for any consideration (or any moneys
be paid to or made available for a sinking fund for the redemption of any
shares of any such series) by ProLogis (except by conversion into or exchange
for other capital shares of ProLogis ranking junior to the Preferred Shares of
such series as to dividends and upon liquidation).
 
  Any dividend payment made on a series of Preferred Shares shall first be
credited against the earliest accrued but unpaid dividend due with respect to
shares of such series which remains payable.
 
REDEMPTION
 
  If so provided in the applicable Prospectus Supplement, the Preferred Shares
of a series will be subject to mandatory redemption or redemption at the
option of ProLogis, as a whole or in part, in each case upon the terms, at the
times and at the redemption prices set forth in such Prospectus Supplement.
 
  The Prospectus Supplement relating to a series of Preferred Shares that is
subject to mandatory redemption will specify the number of Preferred Shares of
such series that shall be redeemed by ProLogis in each year commencing after a
date to be specified, at a redemption price per share to be specified,
together with an amount
 
                                      20
<PAGE>
 
equal to all accrued and unpaid dividends thereon (which shall not, if such
series of Preferred Shares does not have a cumulative dividend, include any
cumulation in respect of unpaid dividends for prior dividend periods) to the
date of redemption. The redemption price may be payable in cash or other
property, as specified in the applicable Prospectus Supplement. If the
redemption price for Preferred Shares of any series is payable only from the
net proceeds of the issuance of capital shares of ProLogis, the terms of such
series of Preferred Shares may provide that, if no such capital shares shall
have been issued or to the extent the net proceeds from any issuance are
insufficient to pay in full the aggregate redemption price then due, Preferred
Shares of such series shall automatically and mandatorily be converted into
shares of the applicable capital shares of ProLogis pursuant to conversion
provisions specified in the applicable Prospectus Supplement.
 
  Notwithstanding the foregoing, unless (i) if such series of Preferred Shares
has a cumulative dividend, full cumulative dividends on all Preferred Shares
of any series shall have been or contemporaneously are declared and paid or
declared and a sum sufficient for the payment thereof set apart for payment
for all past dividend periods and the then current dividend period or (ii) if
such series of Preferred Shares does not have a cumulative dividend, full
dividends on all Preferred Shares of any series shall have been or
contemporaneously are declared and paid or declared and a sum sufficient for
the payment thereof set apart for payment for the then current dividend
period, no Preferred Shares of any series shall be redeemed unless all
outstanding Preferred Shares of such series are simultaneously redeemed;
provided, however, that the foregoing shall not prevent the purchase or
acquisition of Preferred Shares of such series pursuant to a purchase or
exchange offer made on the same terms to holders of all outstanding Preferred
Shares of such series, and, unless (i) if such series of Preferred Shares has
a cumulative dividend, full cumulative dividends on all Preferred Shares of
any series shall have been or contemporaneously are declared and paid or
declared and a sum sufficient for the payment thereof set apart for payment
for all past dividend periods and the then current dividend period or (ii) if
such series of Preferred Shares does not have a cumulative dividend, full
dividends on all Preferred Shares of any series shall have been or
contemporaneously are declared and paid or declared and a sum sufficient for
the payment thereof set apart for payment for the then current dividend
period, ProLogis shall not purchase or otherwise acquire directly or
indirectly any Preferred Shares of such series (except by conversion into or
exchange for capital shares of ProLogis ranking junior to the Preferred Shares
of such series as to dividends and upon liquidation).
 
  If fewer than all of the outstanding Preferred Shares of any series are to
be redeemed, the number of shares to be redeemed will be determined by
ProLogis and such shares may be redeemed pro rata from the holders of record
of Preferred Shares of such series in proportion to the number of Preferred
Shares of such series held by such holders (with adjustments to avoid
redemption of fractional shares) or by lot in a manner determined by ProLogis.
 
  Notice of redemption will be mailed at least 30 days but not more than 90
days before the redemption date to each holder of record of Preferred Shares
of any series to be redeemed at the address shown on the share transfer books
of ProLogis. Each notice shall state: (i) the redemption date; (ii) the number
of shares and series of the Preferred Shares to be redeemed; (iii) the
redemption price; (iv) the place or places where certificates for such
Preferred Shares are to be surrendered for payment of the redemption price;
(v) that dividends on the Preferred Shares to be redeemed will cease to accrue
on such redemption date; and (vi) the date upon which the holder's conversion
rights, if any, as to such Preferred Shares shall terminate. If fewer than all
the Preferred Shares of any series are to be redeemed, the notice mailed to
each such holder thereof shall also specify the number of Preferred Shares to
be redeemed from each such holder. If notice of redemption of any Preferred
Shares has been given and if the funds necessary for such redemption have been
set aside by ProLogis in trust for the benefit of the holders of any Preferred
Shares so called for redemption, then from and after the redemption date
dividends will cease to accrue on such Preferred Shares, and all rights of the
holders of such Preferred Shares will terminate, except the right to receive
the redemption price.
 
LIQUIDATION PREFERENCE
 
  Upon any voluntary or involuntary liquidation, dissolution or winding up of
the affairs of ProLogis, then, before any distribution or payment shall be
made to the holders of any Common Shares or any other class or
 
                                      21
<PAGE>
 
series of shares of beneficial interest of ProLogis ranking junior to such
series of Preferred Shares in the distribution of assets upon any liquidation,
dissolution or winding up of ProLogis, the holders of each series of Preferred
Shares shall be entitled to receive out of assets of ProLogis legally
available for distribution to shareholders liquidating distributions in the
amount of the liquidation preference per share (set forth in the applicable
Prospectus Supplement), plus an amount equal to all dividends accrued and
unpaid thereon (which shall not include any cumulation in respect of unpaid
dividends for prior dividend periods if such series of Preferred Shares does
not have a cumulative dividend). After payment of the full amount of the
liquidating distributions to which they are entitled, the holders of Preferred
Shares of such series will have no right or claim to any of the remaining
assets of ProLogis. In the event that, upon any such voluntary or involuntary
liquidation, dissolution or winding up, the available assets of ProLogis are
insufficient to pay the amount of the liquidating distributions on all
outstanding Preferred Shares of such series and the corresponding amounts
payable on all shares of other classes or series of capital shares of ProLogis
ranking on a parity with Preferred Shares of such series in the distribution
of assets, then the holders of Preferred Shares of such series and all other
such classes or series of capital shares shall share ratably in any such
distribution of assets in proportion to the full liquidating distributions to
which they would otherwise be respectively entitled.
 
  If liquidating distributions shall have been made in full to all holders of
Preferred Shares of such series, the remaining assets of ProLogis shall be
distributed among the holders of any other classes or series of capital shares
ranking junior to the Preferred Shares of such series upon liquidation,
dissolution or winding up, according to their respective rights and
preferences and in each case according to their respective number of shares.
For such purposes, the consolidation or merger of ProLogis with or into any
other entity, or the sale, lease or conveyance of all or substantially all of
the property or business of ProLogis, shall not be deemed to constitute a
liquidation, dissolution or winding up of ProLogis.
 
VOTING RIGHTS
 
  Holders of the Preferred Shares of each series will not have any voting
rights, except as set forth below or in the applicable Prospectus Supplement
or as otherwise required by applicable law. The following is a summary of the
voting rights that, unless provided otherwise in the applicable Prospectus
Supplement, will apply to each series of Preferred Shares.
 
  If six quarterly dividends (whether or not consecutive) payable on the
Preferred Shares of such series or any other series of Preferred Shares
ranking on a parity with such series of Preferred Shares with respect in each
case to the payment of dividends, amounts upon liquidation, dissolution and
winding up ("Parity Shares") are in arrears, whether or not earned or
declared, the number of Trustees then constituting the Board will be increased
by two, and the holders of Preferred Shares of such series, voting together as
a class with the holders of any other series of Parity Shares (any such other
series, the "Voting Preferred Shares"), will have the right to elect two
additional trustees to serve on the Board at any annual meeting of
shareholders or a properly called special meeting of the holders of Preferred
Shares of such series and such Voting Preferred Shares and at each subsequent
annual meeting of shareholders until all such dividends and dividends for the
current quarterly period on the Preferred Shares of such series and such other
Voting Preferred Shares have been paid or declared and set aside for payment.
Such voting rights will terminate when all such accrued and unpaid dividends
have been declared and paid or set aside for payment. The term of office of
all trustees so elected will terminate with the termination of such voting
rights. For so long as Security Capital and certain of its affiliates
beneficially own in excess of 10% of the outstanding Common Shares, in any
such vote by holders of Preferred Shares of such series, Security Capital and
certain of its affiliates shall vote their Preferred Shares of such series, if
any, in the same respective percentages as the Preferred Shares of such series
and Voting Preferred Shares that are not held by such persons.
 
  The approval of two-thirds of the outstanding Preferred Shares of such
series and all other series of Voting Preferred Shares similarly affected,
voting as a single class, is required in order to (i) amend the Declaration of
Trust to affect materially and adversely the rights, preferences or voting
power of the holders of the Preferred Shares of such series or the Voting
Preferred Shares; (ii) enter into a share exchange that affects the Preferred
 
                                      22
<PAGE>
 
Shares of such series, consolidate with or merge into another entity, or
permit another entity to consolidate with or merge into ProLogis, unless in
each such case each Preferred Share of such series remains outstanding without
a material and adverse change to its terms and rights or is converted into or
exchanged for preferred shares of the surviving entity having preferences,
conversion or other rights, voting powers, restrictions, limitations as to
dividends, qualifications and terms or conditions of redemption thereof
identical to that of a Preferred Share of such series (except for changes that
do not materially and adversely affect the holders of the Preferred Shares of
such series); or (iii) authorize, reclassify, create, or increase the
authorized amount of any class of shares having rights senior to the Preferred
Shares of such series with respect to the payment of dividends or amounts upon
liquidation, dissolution or winding up. However, ProLogis may create
additional classes of Parity Shares and other series of Preferred Shares
ranking junior to such series of Preferred Shares with respect in each case to
the payment of dividends, amounts upon liquidation, dissolution and winding up
("Junior Shares"), increase the authorized number of Parity Shares and Junior
Shares and issue additional series of Parity Shares and Junior Shares without
the consent of any holder of Preferred Shares of such series.
 
  Except as provided above and as required by law, the holders of Preferred
Shares of each series will not be entitled to vote on any merger or
consolidation involving ProLogis or a sale of all or substantially all of the
assets of ProLogis.
 
CONVERSION RIGHTS
 
  The terms and conditions, if any, upon which Preferred Shares of any series
are convertible into Common Shares will be set forth in the applicable
Prospectus Supplement relating thereto. Such terms will include the number of
Common Shares into which the Preferred Shares of such series are convertible,
the conversion price (or manner of calculation thereof), the conversion
period, provisions as to whether conversion will be at the option of the
holders of the Preferred Shares of such series or ProLogis, the events
requiring an adjustment of the conversion price and provisions affecting
conversion in the event of the redemption of the Preferred Shares of such
series.
 
RESTRICTIONS ON OWNERSHIP
 
  As discussed below under "Description of Common Shares--Restriction on Size
of Holdings," for ProLogis to qualify as a REIT under the Internal Revenue
Code of 1986, as amended (the "Code"), not more than 50% in value of its
outstanding shares of beneficial interest may be owned by five or fewer
individuals at any time during the last half of any taxable year. Therefore,
the Articles Supplementary for each series of Preferred Shares will contain
certain provisions restricting the ownership and transfer of the Preferred
Shares (the "Preferred Shares Ownership Limit Provision"). Except as otherwise
described in the applicable Prospectus Supplement relating thereto, the
provisions of each Articles Supplementary relating to the Preferred Shares
Ownership Limit will provide (as in the case of the Series A Preferred Shares,
the Series B Preferred Shares, the Series C Preferred Shares and the Series D
Preferred Shares) as summarized below.
 
  The Preferred Shares Ownership Limit Provision will provide that, subject to
certain exceptions contained in such Articles Supplementary, no person, or
persons acting as a group, may beneficially own more than 25% of any series of
Preferred Shares outstanding at any time, except as a result of ProLogis'
redemption of Preferred Shares. Shares acquired in excess of the Preferred
Shares Ownership Limit Provision must be redeemed by ProLogis at a price equal
to the average daily per share closing sale price during the 30-day period
ending on the business day prior to the redemption date. Such redemption is
not applicable if a person's ownership exceeds the limitations due solely to
ProLogis' redemption of Preferred Shares; provided that thereafter any
additional Preferred Shares acquired by such person shall be Excess Shares (as
hereinafter defined). See "Description of Common Shares--Restriction on Size
of Holdings". From and after the date of notice of such redemption, the holder
of the Preferred Shares thus redeemed shall cease to be entitled to any
distribution (other than distributions declared prior to the date of notice of
redemption), voting rights and other benefits with respect to such shares
except the right to receive payment of the redemption price determined as
described above. The Preferred Shares Ownership Limit Provision may not be
waived with respect to certain affiliates of ProLogis.
 
                                      23
<PAGE>
 
  All certificates representing shares of Preferred Shares will bear a legend
referring to the restrictions described above.
 
                         DESCRIPTION OF COMMON SHARES
 
GENERAL
 
  The Declaration of Trust authorizes ProLogis to issue up to 180,000,000
Shares of Beneficial Interest, par value $0.01 per share, consisting of Common
Shares, Preferred Shares and such other types or classes of shares of
beneficial interest as the Board may create and authorize from time to time.
At April 30, 1998, approximately 122,907,744 Common Shares were issued and
outstanding and held of record by approximately 1,195 shareholders.
 
  The following description sets forth certain general terms and provisions of
the Common Shares to which any Prospectus Supplement may relate, including a
Prospectus Supplement which provides for Common Shares issuable pursuant to
subscription offerings or rights offerings or upon conversion of Preferred
Shares which are offered pursuant to such Prospectus Supplement and
convertible into Common Shares for no additional consideration. The statements
below describing the Common Shares are in all respects subject to and
qualified in their entirety by reference to the applicable provisions of the
Declaration of Trust and ProLogis' Bylaws.
 
  The outstanding Common Shares are fully paid and, except as set forth below
under "--Shareholder Liability," non-assessable. Each Common Share entitles
the holder to one vote on all matters requiring a vote of shareholders,
including the election of Trustees. Holders of Common Shares do not have the
right to cumulate their votes in the election of Trustees, which means that
the holders of a majority of the outstanding Common Shares can elect all of
the Trustees then standing for election. Holders of Common Shares are entitled
to such distributions as may be declared from time to time by the Board out of
funds legally available therefor. Holders of Common Shares have no conversion,
redemption, preemptive or exchange rights to subscribe to any securities of
ProLogis. In the event of a liquidation, dissolution or winding up of the
affairs of ProLogis, the holders of the Common Shares are entitled to share
ratably in the assets of ProLogis remaining after provision for payment of all
liabilities to creditors and payment of liquidation preferences and accrued
dividends, if any, on the Series A Preferred Shares, Series B Preferred
Shares, Series C Preferred Shares and Series D Preferred Shares, and subject
to the rights of holders of other series of Preferred Shares, if any. The
right of holders of the Common Shares are subject to the rights and
preferences established by the Board for the Series A Preferred Shares, Series
B Preferred Shares, Series C Preferred Shares and Series D Preferred Shares
and any other series of Preferred Shares which may subsequently be issued by
ProLogis. See "Description of Preferred Shares".
 
PURCHASE RIGHTS
 
  On December 7, 1993, the Board declared a dividend of one preferred share
purchase right (a "Purchase Right") for each Common Share outstanding, payable
to holders of Common Shares of record at the close of business on December 31,
1993. The holders of any additional Common Shares issued after such date and
before the redemption or expiration of the Purchase Rights are also entitled
to receive one Purchase Right for each such additional Common Share. Each
Purchase Right entitles the holder under certain circumstances to purchase
from ProLogis one one-hundredth of a share of Series A Junior Participating
Preferred Shares, par value $0.01 per share (the "Participating Preferred
Shares") at a price of $40.00 per one one-hundredth of a Participating
Preferred Share, subject to adjustment. Purchase Rights are exercisable when a
person or group of persons (other than Security Capital) acquires 20% or more
of the outstanding Common Shares or announces a tender offer or exchange offer
for 25% or more of the outstanding Common Shares. Under certain circumstances,
each Purchase Right entitles the holder to purchase, at the Purchase Right's
then current exercise price, a number of Common Shares having a market value
of twice the Purchase Right's exercise price. The acquisition of ProLogis
pursuant to certain mergers or other business transactions would entitle each
holder to purchase, at the Purchase Right's then current exercise price, a
number of the acquiring company's common shares having a market value at that
 
                                      24
<PAGE>
 
time equal to twice the Purchase Right's exercise price. The Purchase Rights
held by certain 20% shareholders (other than Security Capital) would not be
exercisable. The Purchase Rights will expire on December 7, 2003 and are
subject to redemption in whole, but not in part, at a price of $0.01 per
Purchase Right payable in cash, shares of ProLogis or any other form of
consideration determined by the Board.
 
TRANSFER AGENT
 
  The transfer agent and registrar for the Common Shares is BankBoston, N.A.,
150 Royall Street, Canton, Massachusetts 02021. The Common Shares are listed
on the NYSE under the symbol "PLD".
 
RESTRICTION ON SIZE OF HOLDINGS
 
  The Declaration of Trust restricts beneficial ownership of ProLogis'
outstanding shares of beneficial interest by a single person, or persons
acting as a group, to 9.8% of such shares. The purposes of the restriction are
to assist in protecting and preserving ProLogis' REIT status and to protect
the interest of shareholders in takeover transactions by preventing the
acquisition of a substantial block of shares unless the acquiror makes a cash
tender offer for all outstanding shares. For ProLogis to qualify as a REIT
under the Code, not more than 50% in value of its outstanding shares of
beneficial interest may be owned by five or fewer individuals at any time
during the last half of any taxable year. The restriction permits five persons
to acquire up to a maximum of 9.8% each, or an aggregate of 49% of the
outstanding shares, and, thus, assists the Board in protecting and preserving
ProLogis' REIT status for tax purposes. This restriction does not apply to
Security Capital, which counts as numerous holders for purposes of the tax
rule, because its shares are attributed to its shareholders for purposes of
this rule.
 
  Shares of beneficial interest owned by a person or group of persons in
excess of 9.8% (other than Security Capital and 30% in the case of certain
shareholders who acquired shares prior to ProLogis' initial public offering)
of the outstanding shares of beneficial interest ("Excess Shares") are subject
to redemption by ProLogis, at its option, upon 30 days' notice, at a price
equal to the average daily per share closing sale price during the 30-day
period ending on the business day prior to the redemption date. ProLogis may
make payment of the redemption price at any time or times up to the earlier of
five years after the redemption date or liquidation of ProLogis. ProLogis may
refuse to effect the transfer of any shares of beneficial interest which would
make the transferee a holder of Excess Shares. Shareholders of ProLogis are
required to disclose, upon demand of the Board, such information with respect
to their direct and indirect ownership of shares of ProLogis as the Board
deems necessary to comply with the provisions of the Code pertaining to
qualification, for tax purposes, of REITs, or to comply with the requirements
of any other appropriate taxing authority.
 
  The 9.8% restriction does not apply to acquisitions by an underwriter in a
public offering and sale of shares of beneficial interest of ProLogis or to
any transaction involving the issuance of shares of beneficial interest in
which a majority of the Board determines that the eligibility of ProLogis to
qualify as a REIT for federal income tax purposes will not be jeopardized or
the disqualification of ProLogis as a REIT is advantageous to the
shareholders. Security Capital's ownership of shares is attributed for tax
purposes to its shareholders. The Board has exempted Security Capital from
this restriction and has permitted certain other shareholders who acquired
shares prior to ProLogis' initial public offering to acquire up to 30% of the
outstanding shares of beneficial interest.
 
TRUSTEE LIABILITY
 
  The Declaration of Trust provides that Trustees shall not be individually
liable for any obligation or liability incurred by or on behalf of ProLogis or
by Trustees for the benefit and on behalf of ProLogis. Under the Declaration
of Trust and Maryland law governing REITs, Trustees are not liable to ProLogis
or the shareholders for any act or omission except for acts or omissions which
constitute bad faith, willful misfeasance or gross negligence in the conduct
of his duties.
 
                                      25
<PAGE>
 
SHAREHOLDER LIABILITY
 
  Both Maryland statutory law governing REITs organized under the laws of that
state and the Declaration of Trust provide that shareholders shall not be
personally or individually liable for any debt, act, omission or obligation of
ProLogis or the Board. The Declaration of Trust further provides that ProLogis
shall indemnify and hold each shareholder harmless from all claims and
liabilities to which the shareholder may become subject by reason of his being
or having been a shareholder and that ProLogis shall reimburse each
shareholder for all legal and other expenses reasonably incurred by the
shareholder in connection with any such claim or liability, except to the
extent that such claim or liability arises out of the shareholder's bad faith,
willful misconduct or gross negligence and provided that such shareholder
gives ProLogis prompt notice of any such claim or liability and permits
ProLogis to conduct the defense thereof. In addition, ProLogis is required to,
and as a matter of practice does, insert a clause in its management and other
contracts providing that shareholders assume no personal liability for
obligations entered into on behalf of ProLogis. Nevertheless, with respect to
tort claims, contractual claims where shareholder liability is not so negated,
claims for taxes and certain statutory liability, the shareholders may, in
some jurisdictions, be personally liable to the extent that such claims are
not satisfied by ProLogis. Inasmuch as ProLogis carries public liability
insurance which it considers adequate, any risk of personal liability to
shareholders is limited to situations in which ProLogis' assets plus its
insurance coverage would be insufficient to satisfy the claims against
ProLogis and its shareholders.
 
                       FEDERAL INCOME TAX CONSIDERATIONS
 
  ProLogis intends to operate in a manner that permits it to satisfy the
requirements for taxation as a REIT under the applicable provisions of the
Code. No assurance can be given, however, that such requirements will be met.
The following is a description of the federal income tax consequences to
ProLogis and its shareholders of the treatment of ProLogis as a REIT. Since
these provisions are highly technical and complex, each prospective purchaser
of the Offered Securities is urged to consult his or her own tax advisor with
respect to the federal, state, local, foreign and other tax consequences of
the purchase, ownership and disposition of the Offered Securities.
 
  Based upon certain representations of ProLogis with respect to the facts as
set forth and explained in the discussion below, in the opinion of Mayer,
Brown & Platt, counsel to ProLogis, ProLogis has been organized in conformity
with the requirements for qualification as a REIT beginning with its taxable
year ending December 31, 1993, and its proposed method of operation described
in this Prospectus and as represented by management will enable it to satisfy
the requirements for such qualification.
 
  This opinion is based on certain assumptions relating to the organization
and operation of ProLogis Limited Partnership--I, ProLogis Limited
Partnership--II, ProLogis Limited Partnership--III and ProLogis Limited
Partnership--IV (the "Partnerships") and of any other partnerships in which
ProLogis will hold an interest, and is conditioned upon certain
representations made by ProLogis as to certain factual matters relating to
ProLogis' organization and intended or expected manner of operation. In
addition, this opinion is based on the law existing and in effect on the date
hereof. ProLogis' qualification and taxation as a REIT will depend upon
ProLogis' ability to meet on a continuing basis, through actual operating
results, asset composition, distribution levels and diversity of stock
ownership, the various qualification tests imposed under the Code discussed
below. Mayer, Brown & Platt will not review compliance with these tests on a
continuing basis. No assurance can be given that ProLogis will satisfy such
tests on a continuing basis.
 
  In brief, if certain detailed conditions imposed by the REIT provisions of
the Code are met, entities, such as ProLogis, that invest primarily in real
estate and that otherwise would be treated for federal income tax purposes as
corporations, are generally not taxed at the corporate level on their "REIT
taxable income" that is currently distributed to shareholders. This treatment
substantially eliminates the "double taxation" (at both the corporate and
shareholder levels) that generally results from the use of corporations.
 
                                      26
<PAGE>
 
  If ProLogis fails to qualify as a REIT in any year, however, it will be
subject to federal income taxation as if it were a domestic corporation, and
its shareholders will be taxed in the same manner as shareholders of ordinary
corporations. In this event, ProLogis could be subject to potentially
significant tax liabilities, and therefore the amount of cash available for
distribution to its shareholders would be reduced or eliminated.
 
  ProLogis elected REIT status effective beginning with its taxable year ended
December 31, 1993 and the Board believes that ProLogis has operated and
currently intends that ProLogis will operate in a manner that permits it to
qualify as a REIT in each taxable year thereafter. There can be no assurance,
however, that this expectation will be fulfilled, since qualification as a
REIT depends on ProLogis continuing to satisfy numerous asset, income and
distribution tests described below, which in turn will be dependent in part on
ProLogis' operating results.
 
  The following summary is based on the Code, its legislative history,
administrative pronouncements, judicial decisions and Treasury regulations,
subsequent changes to any of which may affect the tax consequences described
herein, possibly on a retroactive basis. The following summary is not
exhaustive of all possible tax considerations and does not give a detailed
discussion of any state, local, or foreign tax considerations, nor does it
discuss all of the aspects of federal income taxation that may be relevant to
a prospective shareholder in light of his or her particular circumstances or
to certain types of shareholders (including insurance companies, tax-exempt
entities, financial institutions or broker-dealers, foreign corporations and
persons who are not citizens or residents of the United States) subject to
special treatment under the federal income tax laws.
 
TAXATION OF PROLOGIS
 
 General
 
  In any year in which ProLogis qualifies as a REIT, in general it will not be
subject to federal income tax on that portion of its REIT taxable income or
capital gain which is distributed to shareholders. ProLogis may, however, be
subject to tax at normal corporate rates upon any taxable income or capital
gain not distributed.
 
  Notwithstanding its qualification as a REIT, ProLogis may also be subject to
taxation in certain other circumstances. If ProLogis should fail to satisfy
either the 75% or the 95% gross income test (as discussed below), and
nonetheless maintains its qualification as a REIT because certain other
requirements are met, it will be subject to a 100% tax on the greater of the
amount by which ProLogis fails to satisfy either the 75% test or the 95% test,
multiplied by a fraction intended to reflect ProLogis' profitability. ProLogis
will also be subject to a tax of 100% on net income from any "prohibited
transaction," as described below, and if ProLogis has (i) net income from the
sale or other disposition of "foreclosure property" which is held primarily
for sale to customers in the ordinary course of business or (ii) other non-
qualifying income from foreclosure property, it will be subject to tax on such
income from foreclosure property at the highest corporate rate. In addition,
if ProLogis should fail to distribute during each calendar year at least the
sum of (i) 85% of its REIT ordinary income for such year, (ii) 95% of its REIT
capital gain net income for such year (other than capital gains the Company
elects to retain and pay tax on as described below) and (iii) any
undistributed taxable income from prior years, ProLogis would be subject to a
4% excise tax on the excess of such required distribution over the amounts
actually distributed. For taxable years beginning after August 5, 1997, the
Taxpayer Relief Act of 1997 (the "1997 Act") permits a REIT, with respect to
undistributed net long-term capital gains it received during the taxable year,
to designate in a notice mailed to shareholders within 60 days of the end of
the taxable year (or in a notice mailed with its annual report for the taxable
year) such amount of such gains which its shareholders are to include in their
taxable income as long-term capital gains. Thus, if ProLogis made this
designation, the shareholders of ProLogis would include in their income as
long-term capital gains their proportionate share of the undistributed net
capital gains as designated by ProLogis and ProLogis would have to pay the tax
on such gains within 30 days of the close of its taxable year. Each
shareholder of ProLogis would be deemed to have paid such shareholder's share
of the tax paid by ProLogis on such gains, which tax would be credited or
refunded to the shareholder. A shareholder would increase his tax basis in his
ProLogis stock by the difference between the amount of income to the holder
resulting from the designation less the holder's credit or refund for the tax
paid by ProLogis. ProLogis may also be subject to the corporate "alternative
minimum tax," as well as tax in certain situations and on certain transactions
not presently contemplated. ProLogis will use the calendar year both for
federal income tax purposes and for financial reporting purposes.
 
                                      27
<PAGE>
 
  In order to qualify as a REIT, ProLogis must meet, among others, the
following requirements:
 
 Share Ownership Test
 
  ProLogis' shares of stock must be held by a minimum of 100 persons for at
least 335 days in each taxable year (or a proportional number of days in any
short taxable year). In addition, at all times during the second half of each
taxable year, no more than 50% in value of the stock of ProLogis may be owned,
directly or indirectly and by applying certain constructive ownership rules,
by five or fewer individuals, which for this purpose includes certain tax-
exempt entities. Any stock held by a qualified domestic pension or other
retirement trust will be treated as held directly by its beneficiaries in
proportion to their actuarial interest in such trust rather than by such
trust. Pursuant to the constructive ownership rules, Security Capital's
ownership of shares is attributed to its shareholders for purposes of the 50%
test. Under the 1997 Act, for taxable years beginning after August 5, 1997, if
ProLogis complies with the Treasury regulations for ascertaining its actual
ownership and did not know, or exercising reasonable diligence would not have
reason to know, that more than 50% in value of its outstanding shares of stock
were held, actually or constructively, by five or fewer individuals, then
ProLogis will be treated as meeting such requirement.
 
  In order to ensure compliance with the 50% test ProLogis has placed certain
restrictions on the transfer of the shares of its stock to prevent additional
concentration of ownership. Moreover, to evidence compliance with these
requirements under United States Treasury Department ("Treasury") regulations,
ProLogis must maintain records which disclose the actual ownership of its
outstanding shares of stock. In fulfilling its obligations to maintain
records, ProLogis must and will demand written statements each year from the
record holders of designated percentages of shares of its stock disclosing the
actual owners of such shares (as prescribed by Treasury regulations). A list
of those persons failing or refusing to comply with such demand must be
maintained as a part of ProLogis' records. A shareholder failing or refusing
to comply with ProLogis' written demand must submit with his or her tax
returns a similar statement disclosing the actual ownership of shares of
ProLogis' stock and certain other information. In addition, ProLogis' Charter
provides restrictions regarding the transfer of shares of its stock that are
intended to assist ProLogis in continuing to satisfy the share ownership
requirements. See "Description of Common Shares--Restriction on Size of
Holdings." ProLogis intends to enforce the 9.8% limitation on ownership of
shares of its stock to assure that its qualification as a REIT will not be
compromised.
 
 ASSET TESTS
 
  At the close of each quarter of ProLogis' taxable year, ProLogis must
satisfy certain tests relating to the nature of its assets (determined in
accordance with generally accepted accounting principles). First, at least 75%
of the value of ProLogis' total assets must be represented by interests in
real property, interests in mortgages on real property, shares in other REITs,
cash, cash items, and government securities, and qualified temporary
investments. Second, although the remaining 25% of ProLogis' assets generally
may be invested without restriction, securities in this class may not exceed
either (i) in the case of securities of any non-government issuer, 5% of the
value of ProLogis' total assets or (ii) 10% of the outstanding voting
securities of any one issuer.
 
 GROSS INCOME TESTS
 
  There are currently two separate percentage tests relating to the sources of
ProLogis' gross income which must be satisfied for each taxable year. Prior to
taxable years beginning August 5, 1997, there were three seperate percentage
tests relating to the sources of ProLogis' gross income which must have been
satisfied for each prior taxable year. For purposes of these tests, where
ProLogis invests in a partnership, ProLogis will be treated as receiving its
share of the income and loss of the partnership, and the gross income of the
partnership will retain the same character in the hands of ProLogis as it has
in the hands of the partnership. The three tests are as follows:
 
  1. The 75% Test. At least 75% of ProLogis' gross income for the taxable year
must be "qualifying income." Qualifying income generally includes: (i) rents
from real property (except as modified below); (ii) interest on obligations
collateralized by mortgages on, or interests in, real property; (iii) gains
from the sale or other disposition of interests in real property and real
estate mortgages, other than gain from property held primarily
 
                                      28
<PAGE>
 
for sale to customers in the ordinary course of ProLogis' trade or business
("dealer property"); (iv) dividends or other distributions on shares in other
REITs, as well as gain from the sale of such shares; (v) abatements and
refunds of real property taxes; (vi) income from the operation, and gain from
the sale, of property acquired at or in lieu of a foreclosure of the mortgage
collateralized by such property ("foreclosure property"); and (vii) commitment
fees received for agreeing to make loans collateralized by mortgages on real
property or to purchase or lease real property.
 
  Rents received from a tenant will not, however, qualify as rents from real
property in satisfying the 75% test (or the 95% gross income test described
below) if ProLogis, or an owner of 10% or more of ProLogis, directly or
constructively owns 10% or more of such resident. In addition, if rent
attributable to personal property leased in connection with a lease of real
property is greater than 15% of the total rent received under the lease, then
the portion of rent attributable to such personal property will not qualify as
rents from real property. Moreover, an amount received or accrued will not
qualify as rents from real property (or as interest income) for purposes of
the 75% and 95% gross income tests if it is based in whole or in part on the
income or profits of any person, although an amount received or accrued
generally will not be excluded from "rents from real property" solely by
reason of being based on a fixed percentage or percentages of receipts or
sales. Finally, for rents received to qualify as rents from real property,
ProLogis generally must not operate or manage the property or furnish or
render services to tenants, other than through an "independent contractor"
from whom ProLogis derives no income, except that the "independent contractor"
requirement does not apply to the extent that the services provided by
ProLogis are "usually or customarily rendered" in connection with the rental
of properties for occupancy only, or are not otherwise considered "rendered to
the occupant for his convenience". For taxable years beginning after August 5,
1997, a REIT is permitted to render a de minimis amount of impermissible
services to tenants, or in connection with the management of property, and
still treat amounts received with respect to that property as rent from real
property. The amount received or accrued by the REIT during the taxable year
for the impermissible services with respect to a property may not exceed one
percent of all amounts received or accrued by the REIT directly or indirectly
from the property. The amount received for any service (or management
operation) for this purpose shall be deemed to be not less than 150% of the
direct cost of the REIT in furnishing or rendering the service (or providing
the management or operation).
 
  2. The 95% Test. In addition to deriving 75% of its gross income from the
sources listed above, at least 95% of ProLogis' gross income for the taxable
year must be derived from the above-described qualifying income, or from
dividends, interest or gains from the sale or disposition of stock or other
securities that are not dealer property. Dividends (other than on REIT shares)
and interest on any obligations not collateralized by an interest in real
property are included for purposes of the 95% test, but not for purposes of
the 75% test.
 
  For purposes of determining whether ProLogis complies with the 75% and 95%
income tests, gross income does not include income from prohibited
transactions. A "prohibited transaction" is a sale of dealer property
(excluding foreclosure property) unless such property is held by ProLogis for
at least four years and certain other requirements (relating to the number of
properties sold in a year, their tax bases, and the cost of improvements made
thereto) are satisfied. See "--Taxation of ProLogis--General".
 
  Even if ProLogis fails to satisfy one or both of the 75% or 95% gross income
tests for any taxable year, it may still qualify as a REIT for such year if it
is entitled to relief under certain provisions of the Code. These relief
provisions will generally be available if: (i) ProLogis' failure to comply was
due to reasonable cause and not to willful neglect; (ii) ProLogis reports the
nature and amount of each item of its income included in the tests on a
schedule attached to its tax return; and (iii) any incorrect information on
this schedule is not due to fraud with intent to evade tax. If these relief
provisions apply, however, ProLogis will nonetheless be subject to a special
tax upon the greater of the amount by which it fails either the 75% or 95%
gross income test for that year.
 
  3. The 30% Test. For taxable years beginning prior to August 5, 1997,
ProLogis must have derived less than 30% of its gross income for each taxable
year from the sale or other disposition of: (i) real property held for less
than four years (other than foreclosure property and involuntary conversions);
(ii) stock or securities held for less than one year; and (iii) property in a
prohibited transaction. The 30% gross income test has been repealed by the
1997 Act for taxable years beginning after August 5, 1997.
 
                                      29
<PAGE>
 
 Annual Distribution Requirements
 
  In order to qualify as a REIT, ProLogis is required to make distributions
(other than capital gain dividends) to its shareholders each year in an amount
at least equal to (i) the sum of (a) 95% of ProLogis' REIT taxable income
(computed without regard to the dividends paid deduction and the REIT's net
capital gain) and (b) 95% of the net income (after tax), if any, from
foreclosure property, minus (ii) the sum of certain items of non-cash income.
For taxable years beginning after August 5, 1997, the 1997 Act (i) expands the
class of non-cash income that is excluded from the distribution requirement to
include income from the cancellation of indebtedness and (ii) extends the
treatment of original issue discount ("OID") (over cash and the fair market
value of property received on the instrument) as such non-cash income to OID
instruments generally and for REITs, like ProLogis, that use an accrual method
of accounting. Such distributions must be paid in the taxable year to which
they relate, or in the following taxable year if declared before ProLogis
timely files its tax return for such year and if paid on or before the first
regular dividend payment after such declaration. To the extent that ProLogis
does not distribute all of its net capital gain or distributes at least 95%,
but less than 100%, of its REIT taxable income, as adjusted, it will be
subject to tax on the undistributed amount at regular capital gains or
ordinary corporate tax rates, as the case may be. For taxable years beginning
after August 5, 1997, the 1997 Act permits a REIT, with respect to
undistributed net long-term capital gains it received during the taxable year,
to designate in a notice mailed to shareholders within 60 days of the end of
the taxable year (or in a notice mailed with its annual report for the taxable
year) such amount of such gains which its shareholders are to include in their
taxable income as long-term capital gains. Thus, if ProLogis made this
designation, the shareholders of ProLogis would include in their income as
long-term capital gains their proportionate share of the undistributed net
capital gains as designated by ProLogis and ProLogis would have to pay the tax
on such gains within 30 days of the close of its taxable year. Each
shareholder of ProLogis would be deemed to have paid such shareholder's share
of the tax paid by ProLogis on such gains, which tax would be credited or
refunded to the shareholder. A shareholder would increase his tax basis in his
ProLogis stock by the difference between the amount of income to the holder
resulting from the designation less the holder's credit or refund for the tax
paid by ProLogis.
 
  ProLogis intends to make timely distributions sufficient to satisfy the
annual distribution requirements. It is possible that ProLogis may not have
sufficient cash or other liquid assets to meet the 95% distribution
requirement, due to timing differences between the actual receipt of income
and actual payment of expenses on the one hand, and the inclusion of such
income and deduction of such expenses in computing ProLogis' REIT taxable
income on the other hand. To avoid any problem with the 95% distribution
requirement, ProLogis will closely monitor the relationship between its REIT
taxable income and cash flow and, if necessary, intends to borrow funds in
order to satisfy the distribution requirement. However, there can be no
assurance that such borrowing would be available at such time.
 
  If ProLogis fails to meet the 95% distribution requirement as a result of an
adjustment to ProLogis' tax return by the Internal Revenue Service (the
"IRS"), ProLogis may retroactively cure the failure by paying a "deficiency
dividend" (plus applicable penalties and interest) within a specified period.
 
 Tax Aspects of ProLogis' Investments in the Partnerships
 
  A significant portion of ProLogis' investments are through the Partnerships.
ProLogis will include its proportionate share of (i) each Partnership's
income, gains, losses, deductions and credits for purposes of the various REIT
gross income tests and in its computation of its REIT taxable income and (ii)
the assets held by each Partnership for purposes of the REIT asset tests.
 
  ProLogis' interest in the Partnerships involves special tax considerations,
including the possibility of a challenge by the IRS of the status of the
Partnerships as partnerships (as opposed to associations taxable as
corporations) for federal income tax purposes. If a Partnership were to be
treated as an association, such Partnership would be taxable as a corporation
and therefore subject to an entity-level tax on its income. In such a
situation, the character of ProLogis' assets and items of gross income would
change, which may preclude ProLogis from satisfying the REIT asset tests and
may preclude ProLogis from satisfying the REIT gross income
 
                                      30
<PAGE>
 
tests (see "--Failure to Qualify" below, for a discussion of the effect of
ProLogis' failure to meet such tests). Based on certain representations of
ProLogis, in the opinion of Mayer, Brown, & Platt, under existing federal
income tax law and regulations, the Partnerships will be treated for federal
income tax purposes as partnerships, and not as associations taxable as
corporations. Such opinion, however, is not binding on the IRS.
 
 Failure to Qualify
 
  If ProLogis fails to qualify for taxation as a REIT in any taxable year and
certain relief provisions do not apply, ProLogis will be subject to tax
(including applicable alternative minimum tax) on its taxable income at
regular corporate rates. Distributions to shareholders in any year in which
ProLogis fails to qualify as a REIT will not be deductible by ProLogis, nor
generally will they be required to be made under the Code. In such event, to
the extent of current and accumulated earnings and profits, all distributions
to shareholders will be taxable as ordinary income, and subject to certain
limitations in the Code, corporate distributees may be eligible for the
dividends-received deduction. Unless entitled to relief under specific
statutory provisions, ProLogis also will be disqualified from re-electing
taxation as a REIT for the four taxable years following the year during which
qualification was lost.
 
TAXATION OF PROLOGIS' SHAREHOLDERS
 
 Taxation of Taxable Domestic Shareholders
 
  As long as ProLogis qualifies as a REIT, distributions made to ProLogis'
taxable domestic shareholders out of current or accumulated earnings and
profits (and not designated as capital gain dividends) will be taken into
account by them as ordinary income and will not be eligible for the dividends-
received deduction for corporations. Distributions (and for tax years
beginning after August 5, 1997, undistributed amounts) that are designated as
capital gain dividends will be taxed as long-term capital gains (to the extent
they do not exceed ProLogis' actual net capital gain for the taxable year)
without regard to the period for which the shareholder has held its Shares.
However, corporate shareholders may be required to treat up to 20% of certain
capital gain dividends as ordinary income. To the extent that ProLogis makes
distributions in excess of current and accumulated earnings and profits, these
distributions are treated first as a tax-free return of capital to the
shareholder, reducing the tax basis of a shareholder's Shares by the amount of
such distribution (but not below zero), with distributions in excess of the
shareholder's tax basis taxable as capital gains (if the Shares are held as a
capital asset). In addition, any dividend declared by ProLogis in October,
November or December of any year and payable to a shareholder of record on a
specific date in any such month shall be treated as both paid by ProLogis and
received by the shareholder on December 31 of such year, provided that the
dividend is actually paid by ProLogis during January of the following calendar
year. Shareholders may not include in their individual income tax returns any
net operating losses or capital losses of ProLogis. Federal income tax rules
may also require that certain minimum tax adjustments and preferences be
apportioned to ProLogis shareholders.
 
  In general, any loss upon a sale or exchange of Shares by a shareholder who
has held such Shares for six months or less (after applying certain holding
period rules) will be treated as a long-term capital loss, to the extent of
distributions from ProLogis required to be treated by such shareholder as
long-term capital gains.
 
  The Internal Revenue Service Restructuring and Reform Act of 1998 (the "1998
Act"), which was recently passed by Congress and signed into law by the
President, alters the holding period for capital gain income for individuals
(and for certain trusts and estates). Pursuant to the 1997 Act, gain from the
sale or exchange of Shares held for more than 18 months was taxed at a maximum
capital gain rate of 20%. Gain from the sale or exchange of Shares held for
more than one year, but not more than 18 months was taxed at a maximum capital
gain rate of 28%. The 1997 Act also provided a maximum rate of 25% for
"unrecaptured section 1250 gain" recognized on the sale or exchange of certain
real estate assets held for more than 18 months. Pursuant to the 1998 Act,
property held for more than one year (rather than for more than 18 months)
will be eligible for the 20% and 25% capital gains rates discussed above. The
1998 Act applies to amounts taken into account on or after January 1, 1998. On
November 10, 1997, the IRS issued Notice 97-64, which provides generally that
the Company may classify
 
                                      31
<PAGE>
 
portions of its designated capital gain dividends and deemed distributions of
retained capital gains as (i) a 20% rate gain distribution (which would be
taxed as capital gain in the 20% group), (ii) an unrecaptured Section 1250
gain distribution (which would be taxed as capital gain in the 25% group), or
(iii) a 28% rate gain distribution (which would be taxed as capital gain in
the 28% group). If no designation is made, the entire designated capital gain
dividend will be treated as a 28% rate capital gain distribution. Notice 97-64
provides that a REIT must determine the maximum amounts that it may designate
as 20% and 25% rate capital gain dividends by performing the computation
required by the Code as if it were an individual whose ordinary income was
subject to a marginal tax rate of at least 28%. Notice 97-64 has not yet been
modified to incorporate the changes made to holding period requirements under
the 1998 Act.
 
  Shareholders of ProLogis should consult their tax advisor with regard to (i)
the application of the changes made by the 1997 Act and 1998 Act with respect
to taxation of capital gains and capital gain dividends and (ii) to state,
local and foreign taxes on capital gains.
 
 Backup Withholding
 
  ProLogis will report to its domestic shareholders and to the IRS the amount
of distributions paid during each calendar year, and the amount of tax
withheld, if any, with respect thereto. Under the backup withholding rules, a
shareholder may be subject to backup withholding at applicable rates with
respect to distributions paid unless such shareholder (i) is a corporation or
comes within certain other exempt categories and, when required, demonstrates
this fact or (ii) provides a taxpayer identification number, certifies as to
no loss of exemption from backup withholding, and otherwise complies with
applicable requirements of the backup withholding rules. A shareholder that
does not provide ProLogis with its correct taxpayer identification number may
also be subject to penalties imposed by the IRS. Any amount paid as backup
withholding will be credited against the shareholder's income tax liability.
In addition, ProLogis may be required to withhold a portion of capital gain
distributions made to any shareholders who fail to certify their non-foreign
status to ProLogis.
 
 Taxation of Tax-Exempt Shareholders
 
  The IRS has issued a revenue ruling in which it held that amounts
distributed by a REIT to a tax-exempt employees' pension trust do not
constitute unrelated business taxable income ("UBTI"). Subject to the
discussion below regarding a "pension-held REIT," based upon the ruling, the
analysis therein and the statutory framework of the Code, distributions by
ProLogis to a shareholder that is a tax-exempt entity should also not
constitute UBTI, provided that the tax-exempt entity has not financed the
acquisition of its Shares with "acquisition indebtedness" within the meaning
of the Code, and that the Shares are not otherwise used in an unrelated trade
or business of the tax-exempt entity, and that ProLogis, consistent with its
present intent, does not hold a residual interest in a real estate mortgage
investment conduit.
 
  However, if any pension or other retirement trust that qualifies under
Section 401(a) of the Code ("qualified pension trust") holds more than 10% by
value of the interests in a "pension-held REIT" at any time during a taxable
year, a portion of the dividends paid to the qualified pension trust by such
REIT may constitute UBTI. For these purposes, a "pension-held REIT" is defined
as a REIT if (i) such REIT would not have qualified as a REIT but for the
provisions of the Code which look through such a qualified pension trust in
determining ownership of stock of the REIT and (ii) at least one qualified
pension trust holds more than 25% by value of the interests of such REIT or
one or more qualified pension trusts (each owning more than a 10% interest by
value in the REIT) hold in the aggregate more than 50% by value of the
interests in such REIT.
 
 Taxation of Foreign Shareholders
 
  ProLogis will qualify as a "domestically-controlled REIT" so long as less
than 50% in value of its Shares is held by foreign persons (i.e., nonresident
aliens and foreign corporations, partnerships, trust and estates). It is
currently anticipated that ProLogis will qualify as a domestically controlled
REIT. Under these circumstances, gain from the sale of the Shares by a foreign
person should not be subject to U.S. taxation, unless such gain is effectively
connected with such person's U.S. business or, in the case of an individual
foreign person, such person is present within the U.S. for more than 182 days
in such taxable year.
 
                                      32
<PAGE>
 
  Distributions of cash generated by ProLogis' real estate operations (but not
by its sale or exchange of such properties) that are paid to foreign persons
generally will be subject to U.S. withholding tax at a rate of 30%, unless (i)
an applicable tax treaty reduces that tax and the foreign shareholder files
with ProLogis the required form evidencing such lower rate or (ii) the foreign
shareholder files an IRS Form 4224 with ProLogis claiming that the
distribution is "effectively connected" income. Recently promulgated Treasury
Regulations revise in certain respects the rules applicable to foreign
shareholders with respect to payments made after December 31, 1999.
 
  Distributions of proceeds attributable to the sale or exchange by ProLogis
of U.S. real property interests are subject to income and withholding taxes
pursuant to the Foreign Investment in Real Property Tax Act of 1980
("FIRPTA"), and may be subject to branch profits tax in the hands of a
shareholder which is a foreign corporation if it is not entitled to treaty
relief or exemption. ProLogis is required by applicable Treasury regulations
to withhold 35% of any distribution to a foreign person that could be
designated by ProLogis as a capital gain dividend; this amount is creditable
against the foreign shareholder's FIRPTA tax liability.
 
  The federal income taxation of foreign persons is a highly complex matter
that may be affected by many other considerations. Accordingly, foreign
investors in ProLogis should consult their own tax advisors regarding the
income and withholding tax considerations with respect to their investment in
ProLogis.
 
OTHER TAX CONSIDERATIONS
 
 ProLogis Development Services Incorporated and ProLogis Logistics Services
Incorporated
 
  ProLogis Development Services Incorporated and ProLogis Logistics Services
Incorporated will pay Federal and state income taxes at the full applicable
corporate rates on its income prior to payment of any dividends. ProLogis
Development Services Incorporated and ProLogis Logistics Services Incorporated
will attempt to minimize the amount of such taxes, but there can be no
assurance whether or the extent to which measures taken to minimize taxes will
be successful. To the extent that ProLogis Development Services Incorporated
or ProLogis Logistics Services Incorporated is required to pay Federal, state
or local taxes, the cash available for distribution by either company to its
shareholders will be reduced accordingly.
 
 Tax on Built-in Gain
 
  Pursuant to Notice 88-19. 1988-1 C.B. 486, a C corporation that elects to be
taxed as a REIT has to recognize any gain that would have been realized if the
C corporation had sold all of its assets for their respective fair market
values at the end of its last taxable year before the taxable year in which it
qualifies to be taxed as a REIT and immediately liquidated unless the REIT
elects to be taxed under rules similar to the rules of Section 1374 of the
Code.
 
  Since ProLogis has made this election, if during the 10-year period
beginning on the first day of the first taxable year for which ProLogis
qualifies as a REIT (the "Recognition Period"), ProLogis recognizes gain on
the disposition of any asset held by ProLogis as of the beginning of such
Recognition Period, then, to the extent of the excess of (a) the fair market
value of such asset as of the beginning of such Recognition Period over (b)
ProLogis' adjusted basis in such asset as of the beginning of such Recognition
Period (the "Built-in Gain"), such gain will be subject to tax at the highest
regular corporate rate. Because ProLogis acquires many of its properties in
fully taxable transactions and presently expects to hold each property beyond
the Recognition Period, it is not anticipated that ProLogis will pay a
substantial corporate level tax on its Built-in Gain.
 
 Possible Legislative or Other Actions Affecting Tax Consequences
 
  Prospective shareholders should recognize that the present federal income
tax treatment of an investment in ProLogis may be modified by legislative,
judicial or administrative action at any time and that any such action may
affect investments and commitments previously made. The rules dealing with
federal income taxation are
 
                                      33
<PAGE>
 
constantly under review by persons involved in the legislative process and by
the IRS and the Treasury, resulting in revisions of regulations and revised
interpretations of established concepts as well as statutory changes.
Revisions in federal tax laws and interpretations thereof could adversely
affect the tax consequences of an investment in ProLogis.
 
 State and Local Taxes
 
  ProLogis and its shareholders may be subject to state or local taxation in
various jurisdictions, including those in which it or they transact business
or reside. The state and local tax treatment of ProLogis and its shareholders
may not conform to the federal income tax consequences discussed above.
Consequently, prospective shareholders should consult their own tax advisors
regarding the effect of state and local tax laws on an investment in the
offered securities of ProLogis.
 
 Foreign Taxes
 
  Frigoscandia SA, a Luxembourg corporation, and its subsidiaries and
affiliates, may be subject to taxation in various foreign jurisdictions.
Frigoscandia SA will pay any such foreign taxes prior to payment of any
dividends. Frigoscandia SA will attempt to minimize the amount of such taxes,
but there can be no assurance whether or the extent to which measures taken to
minimize taxes will be successful. To the extent that Frigoscandia SA is
required to pay foreign taxes, the cash available for distribution to its
shareholders will be reduced accordingly.
 
  EACH PROSPECTIVE PURCHASER IS ADVISED TO CONSULT WITH HIS OR HER TAX ADVISOR
REGARDING THE SPECIFIC TAX CONSEQUENCES TO HIM OR HER OF THE PURCHASE,
OWNERSHIP, AND SALES OF COMMON SHARES, PREFERRED SHARES OR DEBT SECURITIES IN
AN ENTITY ELECTING TO BE TAXED AS A REAL ESTATE INVESTMENT TRUST, INCLUDING
THE FEDERAL, STATE, LOCAL, FOREIGN, AND OTHER TAX CONSEQUENCES OF SUCH
PURCHASE, OWNERSHIP, SALE AND ELECTION AND OF POTENTIAL CHANGES IN APPLICABLE
TAX LAWS.
 
                             PLAN OF DISTRIBUTION
 
  ProLogis may sell the Offered Securities to one or more underwriters for
public offering and sale by them or may sell the Offered Securities to
investors directly or through agents, which agents may be affiliated with
ProLogis. Direct sales to investors may be accomplished through subscription
offerings or through subscription rights distributed to ProLogis'
shareholders. In connection with subscription offerings or the distribution of
subscription rights to shareholders, if all of the underlying Offered
Securities are not subscribed for, ProLogis may sell such unsubscribed Offered
Securities to third parties directly or through agents and, in addition,
whether or not all of the underlying Offered Securities are subscribed for,
ProLogis may concurrently offer additional Offered Securities to third parties
directly or through agents, which agents may be affiliated with ProLogis. Any
underwriter or agent involved in the offer and sale of the Offered Securities
will be named in the applicable Prospectus Supplement.
 
  The distribution of the Offered Securities may be effected from time to time
in one or more transactions at a fixed price or prices, which may be changed,
or at prices related to the prevailing market prices at the time of sale or at
negotiated prices (any of which may represent a discount from the prevailing
market price). ProLogis also may, from time to time, authorize underwriters
acting as ProLogis' agents to offer and sell the Offered Securities upon the
terms and conditions set forth in the applicable Prospectus Supplement. In
connection with the sale of Offered Securities, underwriters may be deemed to
have received compensation from ProLogis in the form of underwriting discounts
or commissions and may also receive commissions from purchasers of Offered
Securities for whom they may act as agent. Underwriters may sell Offered
Securities to or through dealers, and such dealers may receive compensation in
the form of discounts, concessions or commissions from the underwriters and/or
commissions from the purchasers for whom they may act as agent.
 
 
                                      34
<PAGE>
 
  Any underwriting compensation paid by ProLogis to underwriters or agents in
connection with the offering of Offered Securities, and any discounts,
concessions or commissions allowed by underwriters to participating dealers,
will be set forth in the applicable Prospectus Supplement. Underwriters,
dealers and agents participating in the distribution of the Offered Securities
may be deemed to be underwriters, and any discounts and commissions received
by them and any profit realized by them on resale of the Offered Securities
may be deemed to be underwriting discounts and commissions, under the
Securities Act. Underwriters, dealers and agents may be entitled, under
agreements entered into with ProLogis, to indemnification against and
contribution toward certain civil liabilities, including liabilities under the
Securities Act. Any such indemnification agreements will be described in the
applicable Prospectus Supplement.
 
  If so indicated in the applicable Prospectus Supplement, ProLogis will
authorize dealers acting as ProLogis' agents to solicit offers by certain
institutions to purchase Offered Securities from ProLogis at the public
offering price set forth in such Prospectus Supplement pursuant to Delayed
Delivery Contracts ("Contracts") providing for payment and delivery on the
date or dates stated in such Prospectus Supplement. Each Contract will be for
an amount not less than, and the aggregate principal amount of Offered
Securities sold pursuant to Contracts shall be not less nor more than, the
respective amounts stated in the applicable Prospectus Supplement.
Institutions with whom Contracts, when authorized, may be made include
commercial and savings banks, insurance companies, pension funds, investment
companies, educational and charitable institutions, and other institutions but
will in all cases be subject to the approval of ProLogis. Contracts will not
be subject to any conditions except (i) the purchase by an institution of the
Offered Securities covered by its Contracts shall not at the time of delivery
be prohibited under the laws of any jurisdiction in the United States to which
such institution is subject, and (ii) if the Offered Securities are being sold
to underwriters, ProLogis shall have sold to such underwriters the total
principal amount of the Offered Securities less the principal amount thereof
covered by Contracts.
 
  Certain of the underwriters and their affiliates may be customers of, engage
in transactions with and perform services for ProLogis and its subsidiaries in
the ordinary course of business.
 
                                    EXPERTS
 
  The financial statements and related schedules of ProLogis incorporated by
reference herein and in the Registration Statement to the extent and for the
periods indicated in their reports, have been audited by Arthur Andersen LLP,
independent public accountants, and have been incorporated by reference herein
and in the Registration Statement in reliance upon the authority of that firm
as experts in accounting and auditing in giving said reports.
 
                                 LEGAL MATTERS
 
  The validity of the Offered Securities will be passed upon for ProLogis by
Mayer, Brown & Platt, Chicago, Illinois. Mayer, Brown & Platt has in the past
represented and is currently representing ProLogis and certain of its
affiliates, including Security Capital.
 
                                      35
<PAGE>
 
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 NO DEALER, SALESPERSON OR OTHER PERSON IS AUTHORIZED TO GIVE ANY INFORMATION
OR TO REPRESENT ANYTHING NOT CONTAINED IN THIS PROSPECTUS. YOU MUST NOT RELY
ON ANY UNAUTHORIZED INFORMATION OR REPRESENTATIONS. THIS PROSPECTUS IS AN
OFFER TO SELL ONLY THE NOTES OFFERED HEREBY, BUT ONLY UNDER CIRCUMSTANCES AND
IN JURISDICTIONS WHERE IT IS LAWFUL TO DO SO. THE INFORMATION CONTAINED IN
THIS PROSPECTUS IS CURRENT ONLY AS OF ITS DATE.
 
                                 ------------
 
                               TABLE OF CONTENTS
 
                             Prospectus Supplement
 
<TABLE>
<CAPTION>
                                                                            Page
                                                                            ----
<S>                                                                         <C>
ProLogis Trust............................................................. S-2
Ratio of Earnings to Fixed Charges......................................... S-2
Use of Proceeds............................................................ S-2
Recent Developments........................................................ S-2
Description of Notes....................................................... S-3
Underwriting............................................................... S-7
Validity of Notes.......................................................... S-7
</TABLE>
 
                                  Prospectus
 
<TABLE>
<S>                                                                          <C>
Available Information.......................................................   2
Incorporation by Reference..................................................   2
ProLogis Trust..............................................................   3
Use of Proceeds.............................................................   4
Ratio of Earnings to Combined Fixed Charges and Preferred Share Dividends...   4
Description of Debt Securities..............................................   4
Description of Preferred Shares.............................................  18
Description of Common Shares................................................  24
Federal Income Tax Considerations...........................................  26
Plan of Distribution........................................................  34
Experts.....................................................................  35
Legal Matters...............................................................  35
</TABLE>
 
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                                 $125,000,000
 
                                PROLOGIS TRUST
 
                         7% Notes due October 1, 2003
 
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                                     LOGO
 
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                             GOLDMAN, SACHS & CO.
 
 
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