UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 CURRENT REPORT
     Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):  April 12, 2007

                           TRI-CONTINENTAL CORPORATION
             (Exact name of Registrant as specified in its charter)

          Maryland                     811-00266                 13-5441850
(State or other jurisdiction   (Commission File Number)       (I.R.S. Employer
      of incorporation)                                      Identification No.)

                                100 Park Avenue,
                            New York, New York 10017
               (Address of principal executive offices, zip code)

Registrant's telephone number, including area code (212) 850-1864

                                 Not Applicable
         (Former name or former address, if changed since last report.)

Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

|_| Written communications pursuant to Rule 425 under the Securities Act (17 CFR
230.425)

|_| Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act (17 CFR
240.14a-12)

|_| Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
Act (17 CFR 240.14d-2(b))

|_| Pre-commencement  communications pursuant to Rule13e-4(c) under the Exchange
Act (17CFR 240.13e-4(c))



SECTION 7 - REGULATION FD DISCLOSURE

Item 7.01 Regulation FD Disclosure.

Registrant is furnishing as Exhibit 99.1 the attached Supplement dated April 12,
2007, to the Prospectus, dated May 1, 2006 for Tri-Continental Corporation.

SECTION 9 - FINANCIAL STATEMENTS AND EXHIBITS

                     Supplement, dated April 12, 2007 to the
                          Prospectus, dated May 1, 2006

                                       for

                           TRI-CONTINENTAL CORPORATION
                               (the "Corporation")

This Supplement replaces and supersedes the Supplement,  dated April 6, 2007, to
the Corporation's Prospectus, dated May 1, 2006.

The  Corporation  will  propose  a  distribution  policy  for  the  approval  of
stockholders at the Corporation's 2007 annual meeting of stockholders, currently
scheduled to be held on May 30, 2007. The following discussion has been prepared
to provide  shareholders  with  important  information  concerning  the proposed
distribution policy.

The  distribution  policy  provides  that in each  year  the  Corporation  would
distribute quarterly to holders of Common Stock a minimum amount per share equal
to 2.75% of the net asset value  attributable  to a share of the Common Stock on
the  last  business  day  of  the  preceding  calendar  quarter.  These  amounts
(approximately 11% annually) would consist of distributions of income and either
one or both of net  realized  capital  gains and  returns  of capital  (i.e.,  a
repayment  of a  stockholder's  investment).  Persons who  periodically  receive
distribution  payments  consisting  of a return  of  capital  may be  under  the
impression that they are receiving net profits on their investment when they are
not. Stockholders should read carefully any written disclosure provided pursuant
to Section  19a and Rule 19a-1 of the 1940 Act,  and should not assume  that the
source of any distributions from the Corporation under the proposed distribution
policy is net profits of the Corporation.

Distributions  under the distribution  policy would be subject to applicable law
and the Board's right to suspend, modify or terminate the distribution policy in
the event the Board  determines  that such action would be in the best interests
of the Corporation.  In addition,  distributions would be made only when, as and
if  authorized  by the Board and  declared by the  Corporation  and after paying
dividends on the Preferred Stock and interest and required principal payments



on borrowings,  if any. If approved by  stockholders,  the  distribution  policy
would be implemented promptly.

If the distribution policy is approved, due to the restrictions of the 1940 Act,
the  policy  will  initially  be a "level  distribution  policy" as opposed to a
"managed   distribution   policy."  As  a  "level   distribution   policy,"  the
Corporation's  distributions  of net realized  long-term  capital  gains will be
limited to once or twice a year whereas under a "managed  distribution  policy,"
the  Corporation  would  be  permitted  to  regularly  distribute  net  realized
long-term  capital gains.  The Corporation  intends to seek exemptive  relief to
enable it to operate the policy as a "managed  distribution policy." There is no
guarantee that the Corporation will be granted such relief.

Implementation of the distribution policy may adversely affect the Corporation's
expense ratio, add to the record keeping requirements of holders of Common Stock
and have adverse tax effects on holders of Common Stock if the Corporation has a
net capital loss in any taxable year. In addition, the Corporation believes that
some of its  various  plans  will  require  revision  or  elimination  due to an
expected condition in its proposed application for exemptive relief from certain
provisions  of the 1940 Act in  connection  with the  distribution  policy.  The
Corporation  does not expect to be able to  continue to offer  stockholders  the
ability  to  purchase  shares  of Common  Stock  from the  Corporation  for cash
(including  pursuant to the Automatic Check Service) or with dividends  received
by stockholders  from other  corporations.  The Corporation may also suspend the
Systematic  Withdrawal  Plan. The Corporation may seek to make similar  services
available to stockholders  through an independent plan agent.  These changes may
increase costs to  stockholders  that  participate in such plans as they may pay
higher  fees and  expenses  to their  brokers or an  independent  plan agent for
effecting  purchases and sales of Common Stock than they  currently pay pursuant
to the various plans.

You are advised to read the Corporation's proxy statement and any other relevant
documents filed with the Securities and Exchange  Commission,  or SEC, when they
become  available.  The final proxy  statement will be mailed to stockholders of
Tri-Continental  Corporation as of the record date for the 2007 annual  meeting,
which was March 20, 2007. You may obtain a free copy of the proxy statement when
it becomes available,  and other documents filed by Tri-Continental  Corporation
with the SEC,  at the SEC's web site at  http://www.sec.gov.  Free copies of the
proxy statement when it becomes  available,  and  Tri-Continental  Corporation's
other  filings with the SEC may also be obtained by writing to: J. & W. Seligman
& Co.  Incorporated,  100 Park Avenue, New York, NY 10017,  Attention:  Investor
Relations.



                                    SIGNATURE

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

                                        TRI-CONTINENTAL CORPORATION

Date:  April 12, 2007

                                        By: /s/ Joseph D'Alessandro
                                           -----------------------------
                                                Joseph D'Alessandro
                                                Assistant Secretary