STRUCTURED PRODUCTS CORP
424B5, 1999-10-28
ASSET-BACKED SECURITIES
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PROSPECTUS SUPPLEMENT
(To Prospectus dated May 13, 1999)

                    STRUCTURED PRODUCTS CORP., THE DEPOSITOR
       1,160,000 CORPORATE-BACKED TRUST SECURITIES (CORTSK) CERTIFICATES

                     (PRINCIPAL AMOUNT $25 PER CERTIFICATE)

                                    ISSUED BY

          CORTSK TRUST FOR SOUTHERN COMPANY CAPITAL TRUST I, THE TRUST

                                   RELATING TO

       SOUTHERN COMPANY CAPITAL TRUST I 8.19% EXCHANGE CAPITAL SECURITIES

                             ---------------------
      The Trust will issue a single class of Certificates,  which will represent
interests  in the Trust and will be paid only from the assets of the Trust.  The
assets  of  the  Trust  will  consist  of  $29,000,000  8.19%  Exchange  Capital
Securities issued by Southern Company Capital Trust I and all future payments of
interest,  any  premium  payable  upon an  early  redemption  of the  underlying
Exchange  Capital  Securities  and a  single  payment  of  principal  due on the
underlying  Exchange  Capital  Securities,   as  described  in  this  Prospectus
Supplement.  The sole assets of the  Southern  Company  Capital  Trust I are the
8.19% Series A Exchange Junior Subordinated  Deferrable Interest Notes issued by
Southern Company Capital Funding, Inc.

      The Certificates will evidence the right to receive  semi-annual  interest
payments on the  principal  amount of your  Certificates  at an interest rate of
8.19% per annum,  the right to receive your pro rata amount of a single  payment
of principal of  $29,000,000  due on February 1, 2037 or on such earlier date as
described in this  Prospectus  Supplement and any premium  payable upon an early
redemption of the underlying Exchange Capital Securities.  The Certificates will
represent  interests in the Trust only and will not  represent an interest in or
obligations of any other party. No governmental  agency or  instrumentality  has
insured or  guaranteed  the  Certificates  or the  underlying  Exchange  Capital
Securities.

      YOU SHOULD FULLY CONSIDER THE RISK FACTORS ON PAGE S-8 IN THIS  PROSPECTUS
SUPPLEMENT PRIOR TO INVESTING IN THE CERTIFICATES.

      The  Certificates  have been  approved  for  listing,  subject to official
notice of issuance, on the New York Stock Exchange.  Trading of the Certificates
on the New York Stock  Exchange is expected to commence  within a 30-day  period
after the initial delivery thereof. See "Underwriting" herein.

                             ---------------------
      NEITHER THE  SECURITIES AND EXCHANGE  COMMISSION NOR ANY STATE  SECURITIES
COMMISSION  HAS APPROVED  THESE  SECURITIES OR DETERMINED  THAT THIS  PROSPECTUS
SUPPLEMENT  OR  THE  ACCOMPANYING   PROSPECTUS  IS  ACCURATE  OR  COMPLETE.  ANY

REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

                                                    Per
                                                Certificate        Total
                                                --------------   ---------

Public offering price......................         $25         $29,000,000
- -----------------------------------------------
Underwriting discount......................       $0.7875         $913,500
- -----------------------------------------------
Proceeds to Trust (before expenses)........       $24.2125      $28,086,500

     The  Underwriters  expect to deliver your  Certificates  in book-entry form
only through the Depository Trust Company on or about October 28, 1999.

SM "CorTS" is a service mark of Salomon Smith Barney Inc.

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

SALOMON SMITH BARNEY                                   PAINEWEBBER INCORPORATED
                             ---------------------
October 28, 1999

<PAGE>





                         INFORMATION ABOUT CERTIFICATES

      We  provide  information  to you about the  Certificates  in two  separate
documents  that   progressively   provide  more  detail:  (a)  the  accompanying
Prospectus,  which provides general information,  some of which may not apply to
the  Certificates;  and (b) this  Prospectus  Supplement,  which  describes  the
specific terms of your Certificates.

      You are urged to read both the Prospectus and this  Prospectus  Supplement
in full to obtain  material  information  concerning  the  Certificates.  If the
descriptions of the Certificates vary between this Prospectus Supplement and the
Prospectus,  you should rely on the  information  contained  in this  Prospectus
Supplement.

      We  include   cross-references  in  this  Prospectus  Supplement  and  the
Prospectus  to captions in these  materials  where you can find further  related
discussions.  The  Table of  Contents  for this  Prospectus  Supplement  and the
Prospectus identify the pages where these sections are located.

      You can find a listing of the pages where  capitalized  terms used in this
Prospectus  Supplement  and the  accompanying  Prospectus  are defined under the
caption  "Index of Terms"  beginning on page S-23 in this document and beginning
on page 41 in the accompanying Prospectus.

      The  Depositor  has filed with the  Securities  and Exchange  Commission a
registration statement (of which this Prospectus Supplement and the accompanying
Prospectus  form a part) under the  Securities  Act of 1933,  as  amended,  with
respect to the  Certificates.  This Prospectus  Supplement and the  accompanying
Prospectus do not contain all of the information  contained in the  registration
statement.  For further information  regarding the documents referred to in this
Prospectus  Supplement and the Prospectus,  you should refer to the registration
statement and the exhibits thereto. The registration statement and such exhibits
can be  inspected  and  copied  at  prescribed  rates  at the  public  reference
facilities  maintained by the Securities  and Exchange  Commission at Room 1024,
Judiciary  Plaza,  450 Fifth Street,  N.W.,  Washington,  D.C. 20549, and at the
following  Regional Offices of the Commission:  New York Regional Office,  Seven
World Trade Center,  13th Floor,  New York, New York 10048, and Chicago Regional
Office,  John C. Kluczynski Federal Building,  Northwest Atrium Center, 500 West
Madison Street,  Suite 1400,  Chicago,  Illinois 60661. Copies of such materials
can  also  be  obtained  electronically  through  the  Securities  and  Exchange
Commission's internet web site (http://www.sec.gov).

      You  should  rely only on the  information  contained  in this  Prospectus
Supplement or the Prospectus.  Neither the Depositor nor the  Underwriters  have
authorized any other person to provide you with different information. If anyone
provides you with different or inconsistent information,  you should not rely on
it. Neither the Depositor nor the Underwriters are making an offer to sell these
securities in any  jurisdiction  where the offer or sale is not  permitted.  You
should assume that the information  appearing in this  Prospectus  Supplement or
the Prospectus is accurate as of the date on their respective front covers only.




                                      S-2
<PAGE>
                                     SUMMARY

      This  summary  highlights   selected   information  from  this  Prospectus
Supplement.  It does not contain all of the  information you need to consider in
making your investment decision.  To understand all of the terms of the offering
of the  Certificates,  you should read carefully this Prospectus  Supplement and
the accompanying Prospectus in full.

ESTABLISHMENT  OF THE  TRUST.

Structured  Products  Corp.,  the  Depositor,  is  establishing  a  Trust  to be
designated as CorTSsm Trust For Southern  Company Capital Trust I. The assets of
the Trust will consist of the Underlying Exchange Capital Securities,  which are
$29,000,000  8.19%  Exchange  Capital  Securities due February 1, 2037 issued by
Southern  Company  Capital  Trust I, the  Underlying  Issuer,  and  payments  of
principal  and  interest  and any  redemption  premium  made  on the  Underlying
Exchange  Capital  Securities as discussed in more detail under  "Description of
the  Certificates"  herein.  The Underlying  Issuer is a Delaware business trust
formed for the exclusive  purposes of issuing the  Underlying  Exchange  Capital
Securities  and  investing  the proceeds  thereof in the 8.19% Series A Exchange
Junior Subordinated Deferrable Interest Notes issued by Southern Company Capital
Funding,   Inc.   Southern  Company  Capital  Funding,   Inc.  is  an  indirect,
wholly-owned  subsidiary  of The  Southern  Company.  The  Southern  Company has
guaranteed  the payment of  distributions  on the  Underlying  Exchange  Capital
Securities but only to the extent that the  Underlying  Issuer has funds legally
and immediately available therefor. The Southern Company has also guaranteed the
due and punctual payment of principal,  redemption premium, if any, and interest
on the 8.19% Series A Exchange  Junior  Subordinated  Deferrable  Interest Notes
when  and as the  same  becomes  due and  payable,  whether  at  maturity,  upon
redemption or otherwise.

OFFERED SECURITIES

The Trust will issue the Certificates in a single class.

As holder of Certificates, you will have the right to receive from the Trust:

o periodic  payments of interest on the  principal  amount of your  Certificates
accruing from the closing date at a rate of 8.19% per annum,  on each February 1
and August 1 (absent the  occurrence  of a deferral of interest  payments


                                      S-3
<PAGE>

by the Underlying  Issuer),  commencing on February 1, 2000, until the principal
amount of your Certificates is paid in full as described below; and

o the pro rata share for your  Certificates  of a single payment of principal of
$29,000,000.  It is expected  that you will  receive  your pro rata share of the
principal  payment on  February 1, 2037,  the  maturity  date of the  Underlying
Exchange Capital Securities,  or on such earlier date on which the Trust redeems
your Certificates as described under "Description of the Certificates-Redemption
of  Certificates  Upon  Redemption of Underlying  Exchange  Capital  Securities"
herein.

The  Certificates  are  expected to trade flat.  This means that any accrued and
unpaid interest on the Certificates  will be reflected in the trading price, and
purchasers  will not pay and  sellers  will not  receive  any accrued and unpaid
interest on the Certificates not included in the trading price.

REDEMPTION OF THE CERTIFICATES

The  Underlying  Issuer has the right,  at its option,  to redeem the Underlying
Exchange Capital Securities in whole or in part on or after February 1, 2007, at
an amount equal to the par amount of, plus accrued  interest on, the  Underlying
Exchange  Capital  Securities  to be  redeemed,  plus a  redemption  premium (as
described below), if any.

The  Underlying  Issuer  also has the right to redeem  the  Underlying  Exchange
Capital  Securities in whole at any time if there is more than an  insubstantial
risk that  certain  adverse  tax events may occur with  respect to The  Southern
Company, Southern Company Capital Funding, Inc. or the Underlying Issuer or that
a  determination  could be made  that the  Underlying  Issuer  is an  Investment
Company under the Investment Company Act of 1940, at an amount at least equal to
the par amount of, plus accrued  interest on, the  Underlying  Exchange  Capital
Securities.

If the Underlying  Exchange Capital  Securities are redeemed in whole, the Trust
will redeem all Certificates,  and if the Underlying Exchange Capital Securities
are redeemed in part, the Trust will


                                      S-4
<PAGE>


redeem an equal principal amount of Certificates  selected by lot, in each case,
for an amount at least equal to their principal  amount.  The amount, if any, by
which the redemption price paid on the Underlying  Exchange  Capital  Securities
exceeds  their  principal  amount  is  called  the  redemption  premium.  If the
Underlying Issuer pays a redemption  premium on the Underlying  Exchange Capital
Securities,  you will  receive  a pro rata  amount  of such  redemption  premium
corresponding to the principal amount of your Certificates  being redeemed.  See
"Description of the  Certificates--Redemption of Certificates Upon Redemption of
Underlying Exchange Capital Securities" herein.

The Underlying Issuer is not required to redeem the Underlying  Exchange Capital
Securities.  Therefore, there can be no assurance that the Trust will repurchase
your  Certificates  prior to  February  1, 2037.  Should the Trust  redeem  your
Certificates  prior to February 1, 2037,  the Trustee will notify you by mail at
least 15 days before such redemption date.

DEFERRAL OF INTEREST

Interest payments on the Certificates will be deferred if, and during the period
that,  Southern Company Capital Funding,  Inc. elects to defer interest payments
on the 8.19% Series A Exchange Junior Subordinated Deferrable Interest Notes.

UNDERLYING EXCHANGE CAPITAL SECURITIES

Southern Company Capital Trust I 8.19% Exchange Capital Securities.

TRUSTEE AND TRUST AGREEMENT


U.S. Bank Trust  National  Association  will act as Trustee  pursuant to a trust
agreement dated May 21, 1999, as  supplemented  by a supplement  dated as of the
closing  date.  You may inspect the trust  agreement  and the  supplement at the
office of the Trustee at 100 Wall Street, Suite 1600, New York, NY 10005.

DENOMINATIONS

Each Certificate will have a principal amount of $25.

REGISTRATION, CLEARANCE AND   SETTLEMENT

Your  Certificates  will be registered in the name of Cede & Co., as the nominee
of The Depository Trust Company.

                                      S-5
<PAGE>

TAX CONSIDERATIONS

Orrick,  Herrington & Sutcliffe LLP, counsel to the Depositor, is of the opinion
that  under  existing  law  (1) the  Trust  will be a  grantor  trust  and not a
partnership  or  an  association   taxable  as  a  corporation;   and  (2)  your
Certificates  will represent  beneficial  interests in the  Underlying  Exchange
Capital Securities. For information reporting purposes, absent the occurrence of
a deferral of interest payments by the Underlying  Issuer,  interest payments on
the  Underlying  Exchange  Capital  Securities  will be reported to you (and the
Internal  Revenue  Service) as interest and not original issue discount and will
be  included  in your  income as it is paid (or,  if you are an  accrual  method
taxpayer,  as it is accrued) as interest (and not as original  issue  discount).
See "Certain Federal Income Tax Considerations" in the Prospectus.


ERISA CONSIDERATIONS

An "employee  benefit plan" subject to the Employee  Retirement  Income Security
Act of 1974,  as amended,  or a "plan"  subject to Section  4975 of the Internal
Revenue Code of 1986,  contemplating the purchase of Certificates should consult
with its  counsel  before  making  such a  purchase.  The  fiduciary  of such an
employee  benefit plan or plan and such legal advisors should  consider  whether
the Certificates  will satisfy all of the requirements of the  "publicly-offered
securities  exception"  described  herein or the possible  application  of other
"prohibited   transaction  exemptions"  described  herein.  See  "Certain  ERISA
Considerations" herein.


LISTING

The Certificates  have been approved for listing,  subject to official notice of
issuance, on the New York Stock Exchange. Trading of the Certificates on the New
York Stock  Exchange is expected to commence  within a 30-day  period  after the
initial delivery thereof. See "Underwriting" herein.

                                      S-6
<PAGE>


RATINGS

It is a condition to issuance of the Certificates that they be rated identically
to the  Underlying  Exchange  Capital  Securities  by each of Moody's  Investors
Service,  Inc. and Standard & Poor's  Ratings  Services.  As of the date of this
prospectus supplement, the Underlying Exchange Capital Securities are rated "a3"
and "BBB+" by Moody's  Investors  Service,  Inc. and  Standard & Poor's  Ratings
Services, respectively.



                                      S-7
<PAGE>


                                  RISK FACTORS

You should  consider the following  factors in deciding  whether to purchase the
Certificates:

1     NO  INVESTIGATION  OF THE  UNDERLYING  EXCHANGE  CAPITAL  SECURITIES,  THE
      UNDERLYING  ISSUER,  THE  SOUTHERN  COMPANY OR  SOUTHERN  COMPANY  CAPITAL
      FUNDING,  INC. HAS BEEN MADE BY THE  DEPOSITOR,  UNDERWRITERS  OR TRUSTEE.
      None of the Depositor,  the  Underwriters or the Trustee has made, or will
      make, any investigation of the business condition, financial or otherwise,
      of the Underlying Issuer, The Southern Company or Southern Company Capital
      Funding,  Inc.,  or  verify  any  reports  or  information  filed  by  the
      Underlying Issuer or The Southern Company with the Securities and Exchange
      Commission  or  otherwise  made  available  to the public.  It is strongly
      recommended  that  prospective  investors  in  the  Certificates  consider
      publicly   available   financial  and  other  information   regarding  the
      Underlying  Issuer,  The  Southern  Company and Southern  Company  Capital
      Funding,  Inc. See "The Underlying Issuer," "Description of the Underlying
      Exchange Capital  Securities,"  and "Appendix  A-Description of Underlying
      Exchange Capital Securities" herein.

2.   UNDERLYING  ISSUER IS THE ONLY PAYMENT  SOURCE.  The  payments  made by the
     Underlying  Issuer on the Underlying  Exchange  Capital  Securities are the
     only  source of payment for your  Certificates.  Southern  Company  Capital
     Funding,  Inc.  and The  Southern  Company are  subject to laws  permitting
     bankruptcy,  moratorium,  reorganization or other actions;  should Southern
     Company Capital Funding,  Inc. or The Southern Company experience financial
     difficulties,  this could result in delays in payment,  partial  payment or
     non-payment  of  your  Certificates.  In the  event  of  nonpayment  on the
     Underlying  Exchange Capital  Securities by the Underlying Issuer, you will
     bear   the   risk   of   such   nonpayment.   See   "Description   of   the
     Certificates--Recovery  on Underlying Exchange Capital Securities Following
     Payment Default or Acceleration" herein.

3.   CERTAIN  PAYMENTS TO THE  DEPOSITOR.  On February 1, 2000 as payment of the
     balance  of  the  purchase  price  for  the  Underlying   Exchange  Capital
     Securities,  the  Trustee  will  pay to the  Depositor  the  amount  of the
     interest accrued on the Underlying  Exchange Capital Securities from August
     1,  1999 to but not  including  the  closing  date.  In the event a payment
     default or  acceleration  on the  Underlying  Exchange  Capital  Securities
     occurs on or prior to February 1, 2000 and the  Depositor  is not paid such
     accrued  interest on such date,  the  Depositor  will have a claim for such
     accrued interest,  and will share pro rata with holders of the Certificates
     to the  extent  of such  claim in the  proceeds  from the  recovery  on the
     Underlying   Exchange   Capital   Securities.   See   "Description  of  the
     Certificates--Recovery  on Underlying Exchange Capital Securities Following
     Payment Default or Acceleration" herein.

4.    DISTRIBUTIONS  ON  THE  UNDERLYING   EXCHANGE  CAPITAL   SECURITIES,   AND
      CONSEQUENTLY  THE  CERTIFICATES,  MAY BE  DEFERRED.  Distributions  on the
      Underlying   Exchange   Capital    Securities,    and   consequently   the
      Certificates,  may be  deferred  by the  Underlying  Issuer  in the  event
      Southern  Company  Capital  Funding,  Inc.  defers  payments  on its 8.19%
      Series A Exchange  Junior  Subordinated  Deferrable  Interest  Notes.  The
      deferral may be for up to ten (10) semiannual interest  distribution dates
      provided  that such  extension  period may not extend  beyond  February 1,
      2037.  During  any  extension  period,  interest  on the  8.19%  Series  A
      Exchange Junior  Subordinated  Deferrable Interest Notes, and consequently
      the   Certificates,   will   continue   to  accrue   (and  the  amount  of
      distributions  to  which  holders  of such  notes,  and  consequently  the
      Certificateholders,  will continue to accumulate) at the rate of 8.19% per
      annum,    compounded    semi-annually.    See    "Description    of    the
      Certificates--Distributions" herein.

                                      S-8
<PAGE>

5.    POSSIBLE   TAX  AND  MARKET   PRICE   CONSEQUENCES   OF  A   DEFERRAL   OF
      DISTRIBUTIONS.  Should Southern  Company Capital  Funding,  Inc.  exercise
      its right to defer  payments of  interest  on the 8.19%  Series A Exchange
      Junior  Subordinated   Deferrable  Interest  Notes,  each  holder  of  the
      Underlying  Exchange  Capital  Securities,  and thus  each  holder  of the
      Certificates,  will be  required  to  accrue  income  (as  original  issue
      discount) in respect of the deferred interest  allocable to its Underlying
      Exchange  Capital  Securities  or  Certificates,  as the case may be,  for
      United States  federal  income tax  purposes,  which will be allocated but
      not  distributed  to it. As a result,  each such  holder of a  Certificate
      will  recognize  income for United States  federal  income tax purposes in
      advance of the receipt of cash and will not  receive  the cash  related to
      such  income  from the  Underlying  Issuer if the holder  disposes  of its
      Certificates  prior to the record  date for the  payment of  distributions
      thereafter.  See "Certain Federal Income Tax Consequences" herein.

      Should Southern Company Capital Funding,  Inc. elect to exercise its right
      to defer  payments  of  interest  on the 8.19%  Series A  Exchange  Junior
      Subordinated  Deferrable Interest Notes in the future, the market price of
      the  Underlying   Exchange  Capital   Securities,   and  consequently  the
      Certificates,  is likely to be adversely affected.  A holder that disposes
      of its Certificates during a deferral period, therefore, might not receive
      the same return on its  investment as a holder that  continues to hold its
      Certificates. In addition, merely as a result of the existence of Southern
      Company Capital Funding, Inc.'s right to defer payments of interest on the
      8.19% Series A Exchange Junior Subordinated Deferrable Interest Notes, the
      market  price  of  the  Underlying   Exchange  Capital   Securities,   and
      consequently the Certificates, may be more volatile than the market prices
      of other securities that are not subject to such deferrals.

6.    THE 8.19% SERIES A EXCHANGE JUNIOR SUBORDINATED  DEFERRABLE INTEREST NOTES
      ARE  SUBORDINATED  TO  OTHER   OBLIGATIONS  OF  SOUTHERN  COMPANY  CAPITAL
      FUNDING,  INC.,  AND THE SOUTHERN  COMPANY'S  GUARANTEE OF PAYMENTS DUE ON
      THE 8.19% SERIES A EXCHANGE JUNIOR SUBORDINATED  DEFERRABLE INTEREST NOTES
      iS  SUBORDINATED  TO  OTHER  OBLIGATIONS  OF  THE  SOUTHERN  COMPANY.  The
      obligations  of Southern  Company  Capital  Funding,  Inc. under the 8.19%
      Series A Exchange Junior  Subordinated  Deferrable  Interest Notes will be
      unsecured  and rank  subordinate  and  junior in right of  payment  to all
      senior  indebtedness  of  Southern  Company  Capital  Funding,   Inc.  The
      Southern  Company's  guarantee  of the  payments due on the 8.19% Series A
      Exchange Junior  Subordinated  Deferrable Interest Notes will be unsecured
      and  rank  subordinate  and  junior  in  right of  payment  to all  senior
      indebtedness  of The  Southern  Company.  There  is no  limitation  on the
      amount of secured or unsecured debt, including senior  indebtedness,  that
      may  be  incurred  by  Southern  Company  Capital  Funding,  Inc or by The
      Southern  Company  or by any  of  its  subsidiaries.  The  ability  of the
      Underlying  Issuer to pay amounts due on the Underlying  Exchange  Capital
      Securities is solely  dependent  upon Southern  Company  Capital  Funding,
      Inc.  or The  Southern  Company  making  payments  on the  8.19%  Series A
      Exchange  Junior  Subordinated  Deferrable  Interest  Notes  as  and  when
      required.   See   "Description   of  the   Underlying   Exchange   Capital
      Securities" herein.

7.    THE  UNDERLYING  EXCHANGE  CAPITAL  SECURITIES  MAY  BE  REDEEMED  BY  THE
      UNDERLYING   ISSUER  IN  THE  EVENT  CERTAIN  ADVERSE  TAX  EVENTS  OR  AN
      INVESTMENT  COMPANY ACT EVENT  OCCUR.  If a Tax Event (as defined  herein)
      or an Investment  Company Act Event (as defined  herein)  occurs,  then on
      not less than 30 nor more than 60 days' notice,  Southern  Company Capital
      Funding,  Inc.  will have the right to prepay the 8.19%  Series A Exchange
      Junior  Subordinated  Deferrable Interest Notes in whole prior to February
      1, 2007 and  therefore  cause a  mandatory  redemption  of the  Underlying
      Exchange  Capital  Securities,  and  consequently  the Certificates at the
      Special   Event    Prepayment    Price.    See    "Description    of   the


                                      S-9
<PAGE>

     Certificates--Redemption  of  Certificates  Upon  Redemption  of Underlying
     Exchange Capital Securities" herein.

8.    CONDITIONAL  RIGHT  TO  ADVANCE  MATURITY.  If  there  is a more  than  an
      insubstantial  risk of the occurrence and  continuation of certain adverse
      tax events,  Southern  Company Capital  Funding,  Inc. has the right under
      certain  conditions  to advance the  maturity  date of the 8.19%  Series A
      Exchange Junior  Subordinated  Deferrable Interest Notes. See "Description
      of the Certificates--Conditional Right to Advance Maturity" herein.

                             FORMATION OF THE TRUST

      Structured   Products  Corp.  (the  "Depositor"  or  the  "Company")  will
establish a Trust,  to be designated as CorTSsm  Trust For Southern  Company
Capital Trust I (the "Trust") under New York law pursuant to the Trust Agreement
dated May 21, 1999 (the "Trust  Agreement"),  as supplemented by the CorTSsm
Supplement  1999-4 dated as of the Closing  Date.  The "Closing  Date" means the
date of  initial  delivery  of the  Certificates.  The  assets of the Trust will
consist of $29,000,000  8.19% Exchange  Capital  Securities due February 1, 2037
(the  "Underlying  Exchange  Capital  Securities"  or,  as  referred  to in  the
Prospectus,  the "Term Assets") issued by Southern  Company Capital Trust I (the
"Underlying  Issuer"  or, as  referred to in the  Prospectus,  the "Term  Assets
Issuer") and payments of principal and interest made by the Underlying Issuer on
the  Underlying  Exchange  Capital  Securities as discussed in more detail under
"Description  of the  Certificates"  herein.  The sole  asset of the  Underlying
Issuer is  $29,000,000  principal  amount of the 8.19% Series A Exchange  Junior
Subordinated  Deferrable Interest Notes (the "Junior Subordinated Notes") issued
by Southern Company Capital Funding,  Inc. ("Capital Funding").  Capital Funding
is an  indirect  wholly-owned  subsidiary  of The  Southern  Company  ("Southern
Company"). The Trust Agreement will be qualified as an indenture under the Trust
Indenture Act of 1939, as amended (the "Trust Indenture Act"). Concurrently with
the execution and delivery of the Trust Agreement, the Company will deposit with
the Trustee the  Underlying  Exchange  Capital  Securities  and the Trustee,  on
behalf of the Trust, will accept such Underlying Exchange Capital Securities and
deliver the  Certificates to or upon the order of the Company.  The Trustee will
hold the Underlying  Exchange Capital  Securities for the benefit of the holders
of the Certificates (the "Certificateholders").

                                 USE OF PROCEEDS

      The net  proceeds  to be  received  by the  Company  from  the sale of the
Certificates   will  be  used  to  purchase  the  Underlying   Exchange  Capital
Securities,  which, after the purchase thereof, will be deposited by the Company
with  the  Trust  and will be the  sole  Deposited  Assets  (as  defined  in the
Prospectus) of the Trust.

                              THE UNDERLYING ISSUER

      This Prospectus  Supplement does not provide  information  with respect to
the Underlying Issuer, Southern Company or Capital Funding. No investigation has
been made of the  financial  condition  or  creditworthiness  of the  Underlying
Issuer,  Southern  Company or Capital Funding in connection with the issuance of
the  Certificates.  The Company is not an  affiliate of the  Underlying  Issuer,
Southern Company or Capital Funding.

      The  Underlying  Issuer  is a  Delaware  business  trust  formed  for  the
exclusive  purposes of issuing the Underlying  Exchange  Capital  Securities and
investing  the  proceeds  thereof in the  Junior  Subordinated  Notes.  Southern
Company is subject to the informational  requirements of the Securities Exchange
Act of 1934 and in accordance  therewith  files  reports,  proxy  statements and
other   information   with  the   Securities   and  Exchange   Commission   (the
"Commission"). Reports, proxy statements and other information filed by Southern
Company with the Commission  pursuant to


                                      S-10
<PAGE>

the  informational  requirements of the Exchange Act can be inspected and copied
at the public  reference  facilities  maintained by the Commission at Room 1024,
Judiciary  Plaza,  450 Fifth Street,  N.W.,  Washington,  D.C. 20549, and at the
following  Regional Offices of the Commission:  New York Regional Office,  Seven
World Trade Center,  13th Floor,  New York, New York 10048, and Chicago Regional
Office,  John C. Kluczynski Federal Building,  Northwest Atrium Center, 500 West
Madison Street, Suite 1400, Chicago, Illinois 60661. Copies of such material can
also be maintained upon written request addressed to the Securities and Exchange
Commission,  Public  Reference  Section,  Room  1024,  450 Fifth  Street,  N.W.,
Washington, D.C. 20549, at prescribed rates. The Commission maintains a web site
at http://www.sec.gov containing reports, proxy statements and other information
regarding  registrants  that  file  electronically  with  the  Commission.  Such
reports,  proxy  statements and other  information  can also be inspected at the
offices  of the New  York  Stock  Exchange,  on  which  one or more of  Southern
Company's securities are listed.

      THIS  PROSPECTUS  SUPPLEMENT,  THE  PROSPECTUS,  THE  UNDERLYING  EXCHANGE
CAPITAL  SECURITIES  PROSPECTUS AND THE UNDERLYING  EXCHANGE CAPITAL  SECURITIES
REGISTRATION  STATEMENT  DESCRIBES THE MATERIAL TERMS OF THE UNDERLYING EXCHANGE
CAPITAL SECURITIES.  THIS PROSPECTUS SUPPLEMENT IS QUALIFIED IN ITS ENTIRETY BY,
AND SHOULD BE READ IN CONJUNCTION WITH, (I) THE PROSPECTUS,  (II) THE UNDERLYING
EXCHANGE CAPITAL SECURITIES PROSPECTUS AND (III) THE UNDERLYING EXCHANGE CAPITAL
SECURITIES  REGISTRATION  STATEMENT OF WHICH SUCH  UNDERLYING  EXCHANGE  CAPITAL
SECURITIES  PROSPECTUS IS A PART. NO  REPRESENTATION  IS MADE BY THE TRUST,  THE
TRUSTEE,  THE  UNDERWRITERS OR THE COMPANY AS TO THE ACCURACY OR COMPLETENESS OF
THE  INFORMATION   CONTAINED  IN  THE  UNDERLYING  EXCHANGE  CAPITAL  SECURITIES
REGISTRATION STATEMENT.

            DESCRIPTION OF THE UNDERLYING EXCHANGE CAPITAL SECURITIES

      The  Underlying  Exchange  Capital  Securities  of the Trust will  consist
solely of $29,000,000  aggregate  principal  amount of Southern  Company Capital
Trust I 8.19%  Exchange  Capital  Securities  issued by the  Underlying  Issuer,
having the  characteristics  described in a Prospectus dated August 4, 1997 (the
"Underlying  Exchange Capital Securities  Prospectus").  The Underlying Exchange
Capital Securities were originally issued by the Underlying Issuer as part of an
underwritten public offering of $325,000,000  aggregate principal amount of such
securities,  pursuant to a registration  statement no. 333-28349  (together with
all amendments and exhibits thereto, the "Underlying Exchange Capital Securities
Registration  Statement"),  filed by the  Underlying  Issuer with the Commission
under  the  Securities  Act  of  1933,  as  amended  (the   "Securities   Act").
Distributions  are  required  to be  made  on the  Underlying  Exchange  Capital
Securities (i)  semiannually on the 1st of each February and August,  commencing
on  February  1,  2000,  or if  such  day is not a  Business  Day,  on the  next
succeeding  Business Day and (ii) a single  payment of principal of  $29,000,000
payable on February 1, 2037 (the  "Maturity  Date") or upon earlier  redemption.
The  payments  of  interest  on the  Junior  Subordinated  Notes,  and  thus the
Underlying Exchange Capital Securities and the Certificates,  may be deferred by
Capital  Funding at any time or from time to time for up to ten (10)  semiannual
interest periods.  During any such period,  neither Southern Company nor Capital
Funding  will be  permitted  to make a payment on its capital  stock or any debt
securities  that rank equal to or junior to,  the Junior  Subordinated  Notes or
Southern Company's guarantees,  respectively. The Junior Subordinated Notes, and
consequently the Underlying  Exchange Capital  Securities,  rank subordinate and
junior to all senior  indebtedness  of Capital  Funding.  Southern  Company  has
guaranteed  the payment of  distributions  on the  Underlying  Exchange  Capital
Securities but only to the extent that the  Underlying  Issuer has funds legally
and immediately available therefor. Southern Company has also guaranteed the due
and punctual payment of principal,  redemption  premium, if any, and interest on
the  Junior  Subordinated  Notes when and as the same  become  due and  payable,
whether at maturity, upon redemption or otherwise. Southern Company's guarantee,
however,  is an unsecured  obligation of Southern Company and ranks  subordinate
and junior to all senior indebtedness of Southern Company.


                                      S-11
<PAGE>


      This  Prospectus  Supplement sets forth material terms with respect to the
Underlying   Exchange  Capital   Securities,   but  does  not  provide  detailed
information with respect thereto. This Prospectus Supplement relates only to the
Certificates  offered hereby and is not an offering  document for the Underlying
Exchange Capital Securities. All disclosure contained herein with respect to the
Underlying  Exchange  Capital  Securities  is derived  from  publicly  available
documents  described  above.  The  Underlying  Issuer and  Southern  Company are
subject to the information reporting requirements of the Securities Exchange Act
of 1934 (the "Exchange Act").  Accordingly,  the Underlying  Issuer and Southern
Company are obligated to file reports and other information with the Commission.
Although  the Company has no reason to believe the  information  concerning  the
Underlying Exchange Capital Securities or the Underlying Issuer set forth in the
Underlying Exchange Capital Securities  Prospectus or any report filed under the
Exchange Act is not  reliable,  neither the Company nor any of the  Underwriters
has participated in the preparation of such documents, or made any due diligence
inquiry with respect to the information  provided  therein.  Neither the Company
nor any of the  Underwriters  has verified the accuracy or  completeness of such
documents or reports.  Information contained in such documents and reports is as
of the date(s) stated therein,  and comparable  information,  if given as of the
date hereof,  may be different.  There can be no assurance that events affecting
the Underlying  Exchange  Capital  Securities,  the Underlying  Issuer,  Capital
Funding or Southern Company have not occurred,  which have not yet been publicly
disclosed,  which would  affect the  accuracy or  completeness  of the  publicly
available documents described above.

RATINGS

      The Underlying Exchange Capital Securities have been rated "a3" by Moody's
Investors  Service,  Inc.  ("Moody's")  and "BBB+" by Standard & Poor's  Ratings
Services,  a division of the McGraw-Hill  Companies  ("S&P").  Any rating of the
Underlying Exchange Capital Securities is not a recommendation to purchase, hold
or sell such Underlying  Exchange Capital  Securities or the  Certificates,  and
there can be no assurance that a rating will remain for any given period of time
or that a rating will not be revised or withdrawn entirely by a rating agency if
in its judgment circumstances in the future so warrant.

YEAR 2000

      Certain  information  technology ("IT") and non-IT systems (i.e.  embedded
technology such as  microcontrollers)  may utilize older computer  programs that
were written  using two digits rather than four to define the  applicable  year.
Consequently, such computer programs may recognize a date using "00" as the year
1900  rather than the year 2000.  These  computer  programs  may fail to operate
properly  in the year 2000 and after if they are not  modified  or  replaced  to
comply with year 2000 requirements.

      The  Underlying  Issuer  may not timely  conduct  or  complete a year 2000
assessment and there can be no assurance  that the  Underlying  Issuer will make
any necessary modifications or replacements of its IT or non-IT systems in time,
if at all.  Failure to do so could result in a disruption  of  operations of the
Underlying  Issuer,  including,  among other  things,  a temporary  inability to
process  funds or engage in  similar  normal  business  practices.  As a result,
payments to Certificateholders may be interrupted or impaired.

THE UNDERWRITERS AND THE UNDERLYING ISSUER

      From time to time, Salomon Smith Barney Inc. and PaineWebber  Incorporated
(collectively,  the  "Underwriters")  may be engaged by the  Underlying  Issuer,
Capital Funding or Southern Company as underwriters or placement  agents,  in an
advisory  capacity  or  in  other  business


                                      S-12
<PAGE>

arrangements. In addition, the Underwriters or an affiliate of the Depositor may
make a market in other outstanding  securities of the Underlying Issuer, Capital
Funding or Southern Company.

                         DESCRIPTION OF THE CERTIFICATES

GENERAL

      The  Certificates  will be  issued  pursuant  to the  terms  of the  Trust
Agreement. The following summary as well as other pertinent information included
elsewhere in this Prospectus Supplement and in the Prospectus describes material
terms of the Certificates  and the Trust  Agreement,  but does not purport to be
complete and is subject to, and  qualified in its entirety by reference  to, all
the  provisions  of the  Certificates  and the Trust  Agreement.  The  following
summary  supplements  the description of the general terms and provisions of the
Certificates  of any given series and the related  Trust  Agreement set forth in
the Prospectus, to which description reference is hereby made.

      The  Certificates  will be  denominated  and  distributions  with  respect
thereto will be payable in United States  Dollars,  which will be the "Specified
Currency" as such term is defined in the Prospectus.  The Certificates represent
in the  aggregate the entire  beneficial  ownership  interest in the Trust.  The
property  of the Trust  will  consist  of (i) the  Underlying  Exchange  Capital
Securities  and (ii) all payments on or collections in respect of the Underlying
Exchange Capital Securities accrued on or after the Closing Date,  together with
any proceeds thereof.  The property of the Trust will be held for the benefit of
the holders of the Certificates by the Trustee. The Certificates represent a pro
rata portion of the then-current  aggregate principal balance of all outstanding
Certificates  and will  equal the  portion  of the  proceeds  received  from the
Underlying  Exchange  Capital  Securities that the holder of such Certificate is
entitled to receive on February 1, 2037.

      All  distributions  to  Certificateholders  will be  made  only  from  the
property of the Trust as described herein.  The Certificates do not represent an
interest in or obligation of the  Depositor,  the  Underlying  Issuer,  Southern
Company, the Trustee, the Underwriters, or any affiliate if any thereof.

DISTRIBUTIONS

      Each Certificate evidences the right to receive, to the extent received on
the  Underlying  Exchange  Capital  Securities,  a  semiannual  distribution  of
interest on February 1 and August 1 of each year,  commencing  February 1, 2000,
and a distribution of principal on February 1, 2037, or if any such day is not a
Business day, the next succeeding  Business Day, or upon early  redemption.  For
purposes of the foregoing, "Business Day" means any day other than a Saturday, a
Sunday  or a day on  which  banking  institutions  in New  York,  New  York  are
authorized or obligated by law or executive order to be closed. Distributions of
interest  on the  Certificates,  however,  may be  deferred  as a result  in the
deferral  of  payment on the Junior  Subordinated  Notes held by the  Underlying
Issuer.  Distributions  on the  Junior  Subordinated  Notes may be  deferred  by
Capital Funding for up to ten (10) consecutive semiannual interest periods (such
deferral  period,  the  "Extension  Period")  provided that no Extension  Period
extends beyond February 1, 2037.  During any Extension  Period,  interest on the
Junior Subordinated  Notes, and consequently the Certificates,  will continue to
accrue  (and  the  amount  of  distributions  to  which  holders  of the  Junior
Subordinated  Notes, and consequently the  Certificateholders,  will continue to
accumulate) at the rate of 8.19% per annum, compounded semi-annually.

ADDITIONAL UNDERLYING EXCHANGE CAPITAL SECURITIES AND CERTIFICATES

      From  time to  time  hereafter,  additional  Underlying  Exchange  Capital
Securities may be sold to the Trust, in which case additional  Certificates will
be issued in a principal  amount  equal to the


                                      S-13
<PAGE>

principal  amount  of  Underlying  Exchange  Capital  Securities  so sold to the
Trustee.  Any such additional  Certificates issued will rank pari passu with the
Certificates issued on the date hereof.

REDEMPTION  OF  CERTIFICATES  UPON  REDEMPTION OF  UNDERLYING  EXCHANGE  CAPITAL
SECURITIES

      Upon  receipt  by the  Trustee  of a notice  that all or a portion  of the
Underlying  Exchange  Capital  Securities  are to be redeemed,  the Trustee will
select by lot an equal  principal  amount of  Certificates  for  redemption  and
establish  the  date  such  Certificates  are to be  redeemed.  Notice  of  such
redemption will be given by the Trustee to the registered Certificateholders not
less  than 15  days  prior  to the  redemption  date by mail to each  registered
Certificateholder  at such  registered  Certificateholder's  last address on the
register maintained by the Trustee, provided, however, that the Trustee will not
be required to give any notice of  redemption  prior to the third  business  day
after the date it receives notice of such redemption.

      The  Underlying  Exchange  Capital  Securities  as  originally  issued are
redeemable,  in whole or in part on or after  February 1, 2007, on not less than
30 nor more than 60 days' notice,  at the option of the Underlying  Issuer (such
redemption,  an "Optional  Redemption").  The redemption price in the case of an
Optional  Redemption of the Underlying Exchange Capital Securities will be equal
to the par value of the Underlying  Exchange  Capital  Securities to be redeemed
plus  accrued  interest  on  the  principal  amount  being  redeemed,  plus  the
redemption  premium,  if  any.  The  redemption  premium  will be  equal  to the
percentages  set  forth  below as of  February  1 of each of the years set forth
below:

          YEAR                                      PREMIUM

          2007.....................................   4.0950%
          2008.....................................   3.6855%
          2009.....................................   3.2760%
          2010.....................................   2.8665%
          2011.....................................   2.4570%
          2012.....................................   2.0475%
          2013.....................................   1.6380%
          2014.....................................   1.2285%
          2015.....................................   0.8190%
          2016.....................................   0.4095%
          2017 and thereafter......................   0.0000%

      In addition,  if a Special Event (as defined  below)  occurs,  on not less
than 30 nor more than 60 days'  notice,  Capital  Funding  will have the  option
either  to  redeem  the  Junior  Subordinated  Notes in  whole,  thus  causing a
redemption of the Underlying  Exchange Capital Securities,  (such redemption,  a
"Special Event  Redemption")  or to cause the  termination  of Southern  Company
Capital Trust I and the distribution of the Junior  Subordinated  Notes pro rata
to the holders of the Underlying  Exchange  Capital  Securities.  The redemption
price in the case of a Special Event  Redemption  prior to February 1, 2007 will
be the Special Event Prepayment Price. The "Special Event Prepayment Price" will
equal the greater of (i) 100% of the principal amount of the Underlying Exchange
Capital  Securities  or  (ii)  the sum of the  present  value  of the  remaining
scheduled  payments  of  principal  of,  and  accrued  interest  on,  the Junior
Subordinated Notes through February 1, 2007 discounted to the date of redemption
on a semi-annual  basis (assuming a 360-day year consisting of twelve thirty day
months) at a certain treasury  benchmark rate plus 0.50%, plus, in each case (i)
and (ii),  accrued interest  thereon to the date of redemption.  "Special Event"
means  either (A) the  receipt by  Southern  Company,  Capital  Funding  and the
Underlying  Issuer of an opinion of independent tax counsel  experienced in such
matters  (which may be counsel to  Southern  Company or Capital  Funding) to the
effect  that,  as a result of (i) any  amendment  to, or change  (including  any
announced  prospective  change) in, the laws (or any regulations  thereunder) of
the United States or any political


                                      S-14
<PAGE>

subdivision or taxing authority thereof or therein,  or (ii) any amendment to or
change in an interpretation or application of such laws or regulations, there is
more than an insubstantial  risk that (a) the Underlying Issuer would be subject
to United States  federal  income tax with respect to income accrued or received
on the Junior  Subordinated Notes, (b) interest payable to the Underlying Issuer
on the Junior Subordinated Notes would not be deductible by a member of Southern
Company's  consolidated  tax group for United States federal income tax purposes
or (c) the  Underlying  Issuer would be subject to more than a de minimis amount
of other taxes, duties or other governmental charges,  which charge or amendment
becomes  effective after February 4, 1997 ( a "Tax Event") or (B) the receipt by
Southern  Company,  Capital  Funding and the Underlying  Issuer of an opinion of
independent  counsel  (which  may be  counsel  to  Southern  Company  or Capital
Funding)  to the effect that as a result of a change in law or  regulation  or a
written  change in  interpretation  or  application  of law or regulation by any
legislative  body,  court,  governmental  agency or regulatory  authority  after
February 4, 1997, there is more than an  insubstantial  risk that the Underlying
Issuer is or will be  considered  an  investment  company  under the  Investment
Company Act of 1940 (an "Investment Company Act Event").

      In the event that the Junior  Subordinated  Notes are  distributed  to the
Trust in  exchange  for the  Underlying  Exchange  Capital  Securities  upon the
occurrence of a Special Event  Redemption,  such distribution will not cause the
Certificates to be redeemed.  The Trust will hold the Junior  Subordinated Notes
for the benefit of the  Certificateholders  in accordance  with the terms of the
Trust Agreement.

      The  holder  of a  Certificate  which is  redeemed  will  receive,  on the
redemption date, a payment equal to its pro rata share of the distributions made
on the Underlying Exchange Capital Securities pursuant to an Optional Redemption
or a Special Event Redemption as set forth above.

      CONDITIONAL RIGHT TO ADVANCE MATURITY

      If a Tax Event  occurs,  Capital  Funding will have the right (a) prior to
the dissolution of the Underlying  Issuer, to advance the stated maturity of the
Junior  Subordinated Notes to the minimum extent required,  but not less than 19
and  one-half  years  from  the date of  original  issuance  thereof,  or (b) to
dissolve the  Underlying  Issuer (if not  previously  dissolved) and advance the
stated maturity of the Junior Subordinated Notes to the minimum extent required,
but not less  than 19 and  one-half  years  from the date of  original  issuance
thereof,  in each case such that in the  opinion of  counsel to Capital  Funding
experienced in such matters, after advancing the stated maturity,  interest paid
on the Junior  Subordinated  Notes will be  deductible  for  federal  income tax
purposes.

      RECOVERY ON  UNDERLYING  EXCHANGE  CAPITAL  SECURITIES  FOLLOWING  PAYMENT
DEFAULT OR ACCELERATION

      If a Payment Default or an Acceleration  occurs, the Trustee will promptly
give notice to The  Depository  Trust Company  ("DTC") or, for any  Certificates
which  are  not  then  held  by DTC or any  other  depository,  directly  to the
registered holders of the Certificates  thereof.  Such notice will set forth (i)
the identity of the issue of Underlying  Exchange Capital  Securities,  (ii) the
date and nature of such Payment Default or Acceleration, (iii) the amount of the
interest or principal in default,  (iv) the Certificates affected by the Payment
Default or  Acceleration,  and (v) any other  information  which the Trustee may
deem appropriate.

      In the event of a Payment  Default,  the  Trustee is  required  to proceed
against   the   Underlying   Issuer  or   Capital   Funding  on  behalf  of  the
Certificateholders  to enforce the  Underlying  Exchange  Capital  Securities or
otherwise  to protect the  interests of the  Certificateholders,  subject to the
receipt  of  indemnity  in  form  and  substance  satisfactory  to the  Trustee;
provided,  that holders of  Certificates  representing  a majority of the Voting
Rights on the  Certificates  will be  entitled to direct the Trustee

                                      S-15
<PAGE>

in any such  proceeding  or direct the Trustee to sell the  Underlying  Exchange
Capital Securities,  subject to the Trustee's receipt of satisfactory indemnity.
In the event of an Acceleration  and a  corresponding  payment on the Underlying
Exchange  Capital  Securities,  the Trustee will  distribute the proceeds to the
Certificateholders  no  later  than two  Business  Days  after  the  receipt  of
immediately available funds.

      A "Payment  Default"  means a default in the  payment of any amount due on
the  Underlying  Exchange  Capital  Securities  after the same  becomes  due and
payable (and the  expiration of any  applicable  grace period on the  Underlying
Exchange Capital  Securities).  An "Acceleration"  means the acceleration of the
maturity of the Underlying  Exchange Capital  Securities after the occurrence of
any default on the Underlying  Exchange Capital  Securities other than a Payment
Default.

      In the event that the Trustee  receives money or other property in respect
of the Underlying Exchange Capital Securities (other than a scheduled payment on
or with respect to an interest payment date) as a result of a Payment Default on
the Underlying  Exchange Capital  Securities  (including from the sale thereof),
the Trustee will promptly give notice as provided in the Trust Agreement to DTC,
or for any Certificates  which are not then held by DTC or any other depository,
directly to the registered  holders of the  Certificates  then  outstanding  and
unpaid. Such notice will state that, not later than 30 days after the receipt of
such moneys or other  property,  the Trustee will allocate and  distribute  such
moneys or other property to the holders of  Certificates  then  outstanding  and
unpaid,  pro rata by principal  amount (after  deducting  the costs  incurred in
connection  therewith and subject to the provisions set forth under "Description
of the Trust Agreement - Certain  Payments to the Depositor"  herein).  Property
other than cash will be  liquidated  by the Trustee,  and the  proceeds  thereof
distributed  in cash,  only to the extent  necessary  to avoid  distribution  of
fractional  securities to  Certificateholders.  Any such amounts received by the
Trustee in excess of principal and accrued unpaid  interest on the  Certificates
will  be  distributed  to the  Depositor.  In-kind  distribution  of  Underlying
Exchange Capital Securities to  Certificateholders  will be deemed to reduce the
principal amount of Certificates on a dollar-for-dollar basis. Following such in
kind distribution,  all Certificates will be cancelled.  Other than as set forth
under  "Description of the Trust Agreement - Certain Payments to the Depositor",
no amounts will be  distributed  to the  Depositor in respect of the  Underlying
Exchange Capital  Securities  unless and until principal and accrued interest on
the Certificates has been paid (or reduced by distributions in kind) in full.

      Interest  and  principal  payments  on  the  Underlying  Exchange  Capital
Securities  are payable  solely by the Underlying  Issuer.  Capital  Funding and
Southern  Company  are  subject  to  laws  permitting  bankruptcy,  liquidation,
moratorium,  reorganization  or other actions  which,  in the event of financial
difficulties of Capital Funding or Southern  Company,  could result in delays in
payment,  partial  payment or  non-payment of the  Certificates  relating to the
Underlying Exchange Capital Securities.

LISTING ON THE NEW YORK STOCK EXCHANGE

      The Certificates have been authorized for listing, upon official notice of
issuance,  with the New York Stock Exchange ("NYSE").  There can be no assurance
that the Certificates,  once listed, will continue to be eligible for trading on
the NYSE.

FORM OF THE CERTIFICATES

      The  Certificates  will be delivered in registered  form. The Certificates
will be issued,  maintained and transferred on the book-entry records of DTC and
its Participants in minimum denominations of $25 and integral multiples thereof.
Certificateholders will not receive physical certificates.


                                      S-16
<PAGE>

                       DESCRIPTION OF THE TRUST AGREEMENT

GENERAL

      The Certificates will be issued pursuant to the Trust Agreement, a form of
which  is  filed as an  exhibit  to the  Registration  Statement  of which  this
Prospectus  Supplement and the Prospectus  form a part. A Current Report on Form
8-A relating to the Certificates containing a copy of the CorTSsm Supplement
1999-4 to the Trust  Agreement as executed will be filed by the Company with the
Commission  following the issuance and sale of the  Certificates.  The assets of
the Trust created under the Trust  Agreement  will consist of (i) the Underlying
Exchange  Capital  Securities and (ii) all payments on or collections in respect
of the  Underlying  Exchange  Capital  Securities  due after the  Closing  Date.
Reference is made to the  Prospectus  for important  information  in addition to
that set forth herein regarding the Trust, the terms and conditions of the Trust
Agreement and the Certificates. The following summaries of certain provisions of
the Trust  Agreement  do not  purport  to be  complete  and are  subject  to the
detailed provisions contained in the form of Trust Agreement, to which reference
is  hereby  made  for a full  description  of  such  provisions,  including  the
definition of certain terms used herein.

CERTAIN PAYMENTS TO THE DEPOSITOR

      On February 1, 2000,  as payment of the balance of the purchase  price for
the  Underlying  Exchange  Capital  Securities,  the  Trustee  will  pay  to the
Depositor the amount of the interest accrued on the Underlying  Exchange Capital
Securities  from August 1, 1999 to but not  including  the Closing  Date. In the
event  the  Depositor  is not paid  such  accrued  interest  on such  date,  the
Depositor will have a claim for such accrued interest, and will share pari passu
with  Certificateholders  to the extent of such claim in the  proceeds  from the
recovery on the Underlying Exchange Capital Securities.

THE TRUSTEE

      U.S. Bank Trust National Association, a national banking association, will
act as  Trustee  for  the  Certificates  and the  Trust  pursuant  to the  Trust
Agreement. The Trustee's offices are located at 100 Wall Street, Suite 1600, New
York, New York 10005 and its telephone number is (212) 361-2500.

      The Trust  Agreement  will  provide  that the  Trustee  and any  director,
officer,  employee or agent  thereof will be  indemnified  by the Trust and held
harmless against any loss,  liability or expense incurred in connection with any
legal  action  relating  to  the  Trust  Agreement  or the  Certificates  or the
performance of the Trustee's  duties under the Trust  Agreement,  other than any
loss,  liability or expense  that was incurred by reason of willful  misconduct,
bad faith or negligence  in the  performance  of the Trustee's  duties under the
Trust Agreement.

      Pursuant to the Trust  Agreement,  as compensation  for the performance of
its duties  under such  agreement,  the  Trustee  will be entitled to payment of
Trustee fees and reimbursement of expenses by the Company pursuant to a separate
agreement  with the Company,  but will not have any claim against the Trust with
respect thereto.

EVENT OF DEFAULT

      There are no events of  default  with  respect to the  Certificates.  If a
Payment  Default or  Acceleration  occurs (or other  default with respect to the
Underlying  Exchange Capital Securities  occurs),  the Trustee will act upon the
instruction  of  Certificateholders  to recover  amounts  due on the  Underlying
Exchange  Capital  Securities  and  distribute  the proceeds  from such recovery
(after  deducting the costs incurred in connection  therewith and subject to the
provisions set forth above


                                      S-17
<PAGE>

under  "--Certain  Payments to the  Depositor") to the  Certificateholders.  See
"Description  of  the  Certificates--Recovery  on  Underlying  Exchange  Capital
Securities Following Payment Default or Acceleration" herein.

NO DERIVATIVE TRANSACTIONS

      The Trust is not permitted to engage in derivative transactions.

VOTING RIGHTS

      The  Certificateholders  will  have  100% of the  total  voting  rights as
specified in the Trust Agreement (the "Voting  Rights").  All Voting Rights with
respect to the  Certificates  will be allocated in proportion to the  respective
principal   balances  of  the   then-outstanding   Certificates   held  by  such
Certificateholders on any date of determination.

VOTING OF UNDERLYING EXCHANGE CAPITAL SECURITIES

      The Trustee, as holder of the Underlying Exchange Capital Securities,  has
the right to vote and give  consents  and waivers in respect of such  Underlying
Exchange Capital  Securities as permitted by the depositary with respect thereto
and except as otherwise  limited by the Trust  Agreement.  In the event that the
Trustee  receives a request  from the  Underlying  Issuer for its consent to any
amendment,  modification or waiver of the Underlying Exchange Capital Securities
or any document  relating  thereto,  or receives any other  solicitation for any
action with respect to the Underlying Exchange Capital  Securities,  the Trustee
will  mail  a  notice  of  such  proposed  amendment,  modification,  waiver  or
solicitation  to each  Certificateholder  of record as of such date. The Trustee
will request  instructions from the  Certificateholders  as to whether or not to
consent  to  or  vote  to  accept  such  amendment,   modification,   waiver  or
solicitation.  The Trustee will consent or vote,  or refrain from  consenting or
voting, in the same proportion (based on the relative  principal balances of the
Certificates)  as the Certificates of the Trust were actually voted or not voted
by the  Certificateholders  thereof as of a date determined by the Trustee prior
to the date on which such consent or vote is required;  PROVIDED, HOWEVER, that,
notwithstanding  anything to the contrary stated herein,  the Trustee will at no
time vote in favor of or consent to any matter (i) which  would alter the timing
or  amount  of  any  payment  on the  Underlying  Exchange  Capital  Securities,
including,  without limitation, any demand to accelerate the Underlying Exchange
Capital Securities or (ii) which would result in the exchange or substitution of
any Underlying Exchange Capital Security pursuant to a plan for the refunding or
refinancing of such Underlying  Exchange Capital  Security,  except in each case
with  the  unanimous  consent  of  the  Certificateholders  and  subject  to the
requirement that such vote or consent would not, based on an opinion of counsel,
materially  increase  the risk that the Trust would fail to qualify as a grantor
trust for federal  income tax  purposes.  The Trustee will have no liability for
any failure to act resulting from Certificateholders' late return of, or failure
to return, directions requested by the Trustee from the Certificateholders.

TERMINATION OF THE TRUST

      The Trust will  terminate upon (i) the payment in full at maturity or upon
early  redemption of the  Certificates or (ii) the  distribution of the proceeds
received upon a recovery on the Underlying  Exchange Capital  Securities  (after
deducting the costs incurred in connection therewith) after a Payment Default or
an  Acceleration  thereof  (or other  default  with  respect  to the  Underlying
Exchange Capital Securities).



                                      S-18
<PAGE>

                   CERTAIN FEDERAL INCOME TAX CONSIDERATIONS

      Orrick,  Herrington & Sutcliffe LLP,  counsel to the Depositor,  is of the
opinion that under  existing law (1) the Trust will be a grantor trust and not a
partnership  or  an  association   taxable  as  a  corporation;   and  (2)  your
Certificates  will represent  beneficial  interests in the  Underlying  Exchange
Capital Securities. For information reporting purposes, absent the occurrence of
a deferral of interest payments by the Underlying  Issuer,  interest payments on
the Underlying  Exchange Capital Securities will be reported to you on Form 1099
(and the Internal  Revenue  Service) as interest and not original issue discount
and will be  included  in your  income as it is paid (or,  if you are an accrual
method  taxpayer,  as it is  accrued) as  interest  (and not as  original  issue
discount). See "Certain Federal Income Tax Considerations" in the Prospectus.

      Should Capital Funding exercise its right to defer payments of interest on
the Junior  Subordinated  Notes, each holder of the Underlying  Exchange Capital
Securities, and thus each holder of the Certificates, will be required to accrue
income  (as  original  issue  discount)  in  respect  of the  deferred  interest
allocable to its Underlying Exchange Capital Securities or Certificates,  as the
case may be, for  United  States  federal  income  tax  purposes,  which will be
allocated  but not  distributed  to it.  As a  result,  each  such  holder  of a
Certificate  will recognize income for United States federal income tax purposes
in advance of the receipt of cash and will not receive the cash  related to such
income from the  Underlying  Issuer if the holder  disposes of its  Certificates
prior to the record date for the payment of distributions thereafter.

                          CERTAIN ERISA CONSIDERATIONS

      The Employee Retirement Income Security Act of 1974, as amended ("ERISA"),
and Section  4975 of the Code  impose  certain  requirements  on (a) an employee
benefit  plan (as defined in Section  3(3) of ERISA),  (b) a plan  described  in
Section  4975(e)(1)  of the Code,  including an  individual  retirement  account
("IRA") or Keogh plan or (c) any entity  whose  underlying  assets  include plan
assets by reason of a plan's investment in the entity (each, a "Plan").

      ERISA and Section 4975 of the Code prohibit certain transactions involving
the assets of a Plan and persons who have specified  relationships  to the Plan,
I.E.,  "parties  in  interest"  within  the  meaning  of ERISA or  "disqualified
persons" within the meaning of the Code  (collectively,  "Parties in Interest").
Thus, a Plan fiduciary considering an investment in Certificates should consider
whether  such  an  investment  might  constitute  or give  rise to a  prohibited
transaction under ERISA or Section 4975 of the Code. The Underlying  Issuer, the
Underwriters,  the Trustee  and their  respective  affiliates  may be Parties in
Interest with respect to many Plans.

      If an investment in Certificates by a Plan were to result in the assets of
the Trust being deemed to constitute "plan assets" of such Plan, certain aspects
of such  investment,  including  the  operations  of the  Trust  and the  deemed
extension  of  credit  between  the  Underlying  Issuer  and  the  holder  of  a
Certificate (as a result of the Underlying  Exchange  Capital  Securities  being
deemed to be plan  assets),  as well as  subsequent  transactions  involving the
Trust or its assets, might constitute or result in prohibited transactions under
Section 406 of ERISA and Section 4975 of the Code unless  exemptive  relief were
available under an applicable  exemption issued by the United States  Department
of Labor (the "DOL"). Neither ERISA nor the Code defines the term "plan assets."
Under Section  2510.3-101 of the DOL regulations  (the  "Regulation"),  a Plan's
assets  may  include  the  assets of an entity if the Plan  acquires  an "equity
interest" in such entity unless an exception applies under the Regulation. Thus,
if a Plan acquires a Certificate, for certain purposes (including the prohibited
transaction  provisions  of Section 406 of ERISA and Section  4975 of the Code),
the Plan would be  considered  to own an  undivided  interest in the  underlying
assets of the Trust unless such Certificate is a "publicly-offered  security" or
another exception applies under the Regulation.

                                      S-19
<PAGE>

      The Underwriters  expect that the  Certificates  will satisfy the criteria
for  treatment  as   publicly-offered   securities   under  the  Regulation.   A
publicly-offered  security is a security that is (i) freely  transferable,  (ii)
part of a class of securities that is owned by 100 or more investors independent
of the issuer and of one another at the conclusion of the initial offering,  and
(iii) either is (A) part of a class of securities registered under Section 12(b)
or 12(g) of the Exchange  Act, or (B) sold to the Plan as part of an offering of
securities to the public pursuant to an effective  registration  statement under
the  Securities Act and the class of securities of which such security is a part
is registered  under the Exchange Act within 120 days (or such later time as may
be allowed  by the  Commission)  after the end of the fiscal  year of the issuer
during which the offering of such securities to the public occurred.

      The  Underwriters  will  verify  that there will be at least 100  separate
purchasers (whom the Underwriters  have no reason to believe are not independent
of the Company or of one  another) at the  conclusion  of the initial  offering.
There is no  assurance  that the 100  independent  investor  requirement  of the
"publicly-offered security" exception will, in fact, be satisfied.

      NOTHING HEREIN SHALL BE CONSTRUED AS A  REPRESENTATION  THAT AN INVESTMENT
IN THE  CERTIFICATES  WOULD MEET ANY OR ALL OF THE RELEVANT  LEGAL  REQUIREMENTS
WITH RESPECT TO INVESTMENTS  BY, OR IS APPROPRIATE  FOR, PLANS  GENERALLY OR ANY
PARTICULAR  PLAN. ANY PLAN OR ANY OTHER ENTITY THE ASSETS OF WHICH ARE DEEMED TO
BE "PLAN ASSETS," SUCH AS AN INSURANCE  COMPANY  INVESTING ASSETS OF ITS GENERAL
ACCOUNT, PROPOSING TO ACQUIRE CERTIFICATES SHOULD CONSULT WITH ITS COUNSEL.

                                  UNDERWRITING

      Subject  to the  terms  and  conditions  set  forth  in  the  Underwriting
Agreement (the  "Underwriting  Agreement")  between the Underwriters named below
and the Company, the Company will sell the Certificates to the Underwriters, and
each of the  Underwriters  named below have agreed to purchase  from the Company
the  respective  number of  Certificates  set forth  opposite  its name.  In the
Underwriting Agreement, the Underwriters named below have agreed, subject to the
terms and conditions set forth therein,  to purchase all of the  Certificates if
any Certificates are purchased.

                                                     Number of

UNDERWRITERS                                        CERTIFICATES

PaineWebber Incorporated.......................      580,000
Salomon Smith Barney...........................      580,000
                                                     -------
Total                                              1,160,000
                                                   =========


      The  Company  has  been  advised  by the  Underwriters  that  it  proposes
initially to offer the  Certificates  to the public at the public offering price
set  forth on the  cover  page of this  Prospectus  Supplement,  and to  certain
dealers at such price less a concession  not in excess of $.50 per  Certificate.
The  Underwriters  may allow and such  dealers may reallow a  concession  not in
excess of $.25. After the initial public offering, the public offering price and
the concessions may be changed.

      The Certificates are a new issue of securities with no established trading
market.  The  Certificates  will be approved  for  listing,  subject to official
notice of  issuance,  on the NYSE.  Trading of the  Certificates  on the NYSE is
expected  to  commence  within  the 30-day  period  after the  initial  delivery
thereof.  In order to meet one of the  requirements for listing the Certificates
on the NYSE, the  Underwriters  have  undertaken to sell the  Certificates  to a
minimum of 400 beneficial owners. The Underwriters have told the Company that it
presently intends to make a market in the


                                      S-20
<PAGE>

Certificates  prior to  commencement  of trading on the NYSE,  as  permitted  by
applicable laws and regulations. The Underwriters are not obligated, however, to
make a market in the Certificates.  Any market making by the Underwriters may be
discontinued  at any  time  at the  sole  discretion  of  the  Underwriters.  No
assurance can be given as to whether a trading market for the Certificates  will
develop or as to the liquidity of any trading market.

      The  Certificates  are expected to trade flat. This means that any accrued
and unpaid interest on the Certificates  will be reflected in the trading price,
and purchasers  will not pay and sellers will not receive any accrued and unpaid
interest on the Certificates not included in the trading price.

      Until the  distribution  of the  Certificates  is completed,  rules of the
Commission may limit the ability of the Underwriters to bid for and purchase the
Certificates.  As an exception to these rules, the Underwriters are permitted to
engage in certain  transactions  that  stabilize the price of the  Certificates.
Possible  transactions  consist of bids or purchases for the purpose of pegging,
fixing or maintaining the price of the Certificates.

      If the  Underwriters  create  a  short  position  in the  Certificates  in
connection  with  this  offering,  that is,  if they  sell a  greater  aggregate
principal  amount of  Certificates  than is set forth on the cover  page of this
Prospectus  Supplement,  the  Underwriters  may reduce  that short  position  by
purchasing  Certificates in the open market.  The Underwriters may also impose a
penalty bid on certain selling group members.  This means that if an Underwriter
purchases  Certificates  in the open  market to reduce its short  position or to
stabilize  the  price of the  Certificates,  it may  reclaim  the  amount of the
selling concession from the selling group members who sold those Certificates as
part of the offering.

      In general, purchase of a security for the purposes of stabilization or to
reduce a short  position could cause the price of the security to be higher than
it might be in the absence of such  purchases.  The  imposition of a penalty bid
might also have an effect on the price of a  Certificate  to the extent  that it
were to discourage resales of the Certificates.

      Neither  the  Company  nor the  Underwriters  make any  representation  or
prediction as to the  direction or magnitude of any effect that the  transaction
described  above  might  have on the  price of the  Certificates.  In  addition,
neither  the  Company  nor the  Underwriters  make any  representation  that the
Underwriters  will  engage  in  such  transactions.   Such  transactions,   once
commenced, may be discontinued without notice.

      The  Underwriting  Agreement  provides that the Company will indemnify the
Underwriters against certain civil liabilities,  including liabilities under the
Securities Act, or will contribute to payments the  Underwriters may be required
to make in respect thereof.

      Salomon  Smith  Barney  Inc.  is an  affiliate  of the  Company,  and  the
participation  by Salomon Smith Barney Inc. in the offering of the  Certificates
complies  with  Conduct  Rule 2720 of the  National  Association  of  Securities
Dealers, Inc. regarding underwriting securities of an affiliate.

                                     RATINGS

      It is a condition  to the  establishment  of the Trust and the issuance of
the Certificates  that the  Certificates be rated  identically to the Underlying
Exchange Capital  Securities by both Moody's and S&P. Moody's and S&P have rated
the Underlying Exchange Capital Securities "a3" and "BBB+" respectively.

      The  ratings  address  the  likelihood  of the  receipt  by holders of the
Certificates  of  payments  required  under the Trust  Agreement,  and are based
primarily on the credit quality of the Underlying Exchange Capital Securities.



                                      S-21
<PAGE>

      A security rating is not a recommendation  to buy, sell or hold securities
and may be subject to revision  or  withdrawal  at any time by S&P and  Moody's.
Each security  rating should be evaluated  independently  of any other  security
rating.

      The Company has not requested a rating on the  Certificates  by any rating
agency other than the S&P and Moody's.  However, there can be no assurance as to
whether any other rating agency will rate the Certificates, or, if it does, what
rating  would be  assigned  by any such  other  rating  agency.  A rating on the
Certificates by another rating agency, if assigned at all, may be lower than the
ratings assigned to the Certificates by the S&P and Moody's.

                                 LEGAL OPINIONS

      Certain legal matters relating to the Certificates will be passed upon for
the Company and for the Underwriters by Orrick,  Herrington & Sutcliffe LLP, New
York, New York.


                                      S-22
<PAGE>



                                    INDEX OF TERMS



Acceleration.....................................................16
Business Day.....................................................13
Capital Funding..................................................10
Certificateholders...............................................10
Closing Date.....................................................10
Commission.......................................................10
Company..........................................................10
Depositor........................................................10
DOL..............................................................19
DTC..............................................................15
ERISA............................................................19
Exchange Act.....................................................12
Extension Period.................................................13
Investment Company Act Event.....................................15
IRA..............................................................19
IT...............................................................12
Junior Subordinated Notes........................................10
Maturity Date....................................................11
Moody's..........................................................12
NYSE.............................................................16
Optional Redemption..............................................14
Parties in Interest..............................................19
Payment Default..................................................16
Plan.............................................................19
Regulation.......................................................19
S&P..............................................................12
Securities Act...................................................11
Southern Company.................................................10
Special Event....................................................14
Special Event Prepayment Price...................................14
Special Event Redemption.........................................14
Tax Event........................................................15
Trust............................................................10
Trust Agreement..................................................10
Trust Indenture Act..............................................10
Underlying Exchange Capital Securities...........................10
Underlying Exchange Capital Securities Prospectus................11
Underlying Exchange Capital Securities Registration Statement....11
Underlying Issuer................................................10
Underwriters.....................................................12
Underwriting Agreement...........................................20
Voting Rights....................................................18



                                      S-23
<PAGE>

                                   APPENDIX A

            DESCRIPTION OF THE UNDERLYING EXCHANGE CAPITAL SECURITIES

Issuer:                                      Southern Company Capital Trust I

Underlying Exchange Capital Securities:      8.19%  Exchange Capital
                                             Securities due February 1, 2037

Maturity Date:                               February 1, 2037

Original Principal Amount Issued:            $325,000,000

CUSIP No.:                                   84258PAC1

Stated Interest Rate:                        8.19% per annum

Interest Payment Dates:                      February 1 and August 1


Optional   Redemption:                       The  Underlying   Exchange  Capital
                                             Securities,   and consequently the
                                             Certificates,  will be redeemable,
                                             in whole or in part, at the
                                             option  of the  Underlying  Issuer,
                                             on not less  than 30 nor more than
                                             60 days  notice,  at a price equal
                                             to 104.095% plus accrued  interest
                                             on February 1, 2007 and at
                                             declining prices  thereafter to
                                             100.00% plus accrued interest on
                                             February 1, 2017.


Special  Event  Redemption:                  The  Underlying  Exchange  Capital
                                             Securities  are redeemable,  in
                                             whole but not in part, at any time
                                             by the  Underlying  Issuer if
                                             certain  adverse  tax events occur
                                             with respect to Southern  Company,
                                             Capital Funding  or the  Underlying
                                             Issuer  or a  determination  could
                                             be made that the Underlying Issuer
                                             is an Investment  Company under
                                             the Investment Company Act of
                                             1940.

Principal Amount of Underlying
Capital Securities Deposited
Under Trust Agreement:                       $29,000,000

      The above  summary  is  qualified  in its  entirety  by  reference  to the
Underlying Exchange Capital Securities Prospectus. Neither the Depositor nor any
of its affiliates make any  representation  about the completeness,  accuracy or
timeliness  of  information  in  the  Underlying   Exchange  Capital  Securities
Prospectus.

AVAILABLE INFORMATION

      Southern  Company  is  subject to the  informational  requirements  of the
Securities Exchange Act of 1934 and in accordance therewith files reports, proxy
statements and other information with the Commission.  Reports, proxy statements
and other information filed by Southern Company with the Commission  pursuant to
the  informational  requirements of the Exchange Act can be inspected and copied
at the public  reference  facilities  maintained by the Commission at Room 1024,
Judiciary  Plaza,  450 Fifth Street,  N.W.,  Washington,  D.C. 20549, and at the
following  Regional Offices of the Commission:  New York Regional Office,  Seven
World Trade Center,  13th Floor,  New York, New York 10048, and Chicago Regional
Office,  John C. Kluczynski Federal Building,  Northwest Atrium Center, 500 West
Madison Street, Suite 1400, Chicago, Illinois 60661. Copies of such material can
also be maintained upon written request addressed to the Securities and Exchange
Commission,  Public  Reference  Section,  Room  1024,  450 Fifth  Street,  N.W.,
Washington, D.C. 20549, at prescribed rates. The Commission maintains a Web site
at http://www.sec.gov containing reports, proxy statements and other information
regarding  registrants  that  file  electronically  with  the  Commission.  Such
reports,  proxy  statements and other  information  can also be inspected at the
offices  of the New  York  Stock  Exchange,  on  which  one or more of  Southern
Company's securities are listed.





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