SELIGMAN COMMON STOCK FUND INC
485BPOS, 2000-04-28
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<PAGE>
                                                                     No. 2-10835
                                                                         811-234

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
- --------------------------------------------------------------------------------

                                    FORM N-1A

          REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933            [X]

               Pre-Effective Amendment No. __                                [_]


               Post-Effective Amendment No. 80                               [X]
                                            --


         REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940     [X]


               Amendment No. 28                                              [X]
                             --



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

                        SELIGMAN COMMON STOCK FUND, INC.
               (Exact name of registrant as specified in charter)

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

                    100 PARK AVENUE, NEW YORK, NEW YORK 10017
                    (Address of principal executive offices)

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

                 Registrant's Telephone Number: 212-850-1864 or
                             Toll Free: 800-221-2450

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

                            THOMAS G. ROSE, Treasurer
                                 100 Park Avenue
                            New York, New York 10017
                     (Name and address of agent for service)

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

 It is proposed that this filing will become effective (check appropriate box):


[_] immediately upon filing pursuant to   [_] on (date) pursuant to paragraph
    paragraph (b)                             (a)(1)


[X] on April 28, 2000 pursuant to         [_] 75 days after filing pursuant to
    paragraph (b)                             paragraph (a)(2)

[_] 60 days after filing pursuant to      [_] on (date) pursuant to paragraph
    paragraph (a)(1)                          (a)(2) of rule 485.


If appropriate, check the following box:

[_] This post-effective amendment designates a new effective date for a
    previously filed post-effective amendment.
<PAGE>

  S E L I G M A N
- -----------------
     COMMON STOCK
        FUND, INC.


The Securities and Exchange Commission has neither approved nor disapproved this
Fund, and it has not determined the prospectus to be accurate or adequate. Any
representation to the contrary is a criminal offense.

An investment in this Fund or any other fund cannot provide a complete
investment program. The suitability of an investment in the Fund should be
considered based on the investment objectives, strategies and risks described in
this Prospectus, considered in light of all of the other investments in your
portfolio, as well as your risk tolerance, financial goals and time horizons. We
recommend that you consult your financial advisor to determine if this Fund is
suitable for you.

EQCS1 5/2000

                         [PHOTO OF WATCH ON CALENDAR]

                              P R O S P E C T U S

                                  MAY 1, 2000
                                   ---------

                           Seeking Favorable Current

                             Income and Long-Term

                           Growth of Both Income and

                           Capital Without Exposing

                             Capital to Undue Risk


                                  managed by

                                     J W S

                             J.& W. SELIGMAN & CO.
                                 INCORPORATED
                               ESTABLISHED 1864
<PAGE>

Table of Contents

The Fund
     Investment Objectives 1
     Principal Investment Strategies 1
     Principal Risks 2
     Past Performance 3
     Fees and Expenses 4
     Management 5

Shareholder Information
     Deciding Which Class of Shares to Buy 6
     Pricing of Fund Shares 8
     Opening Your Account 8
     How to Buy Additional Shares 9
     How to Exchange Shares Among
       the Seligman Mutual Funds 10
     How to Sell Shares 10
     Important Policies That May Affect
       Your Account 11
     Dividends and Capital Gain Distributions 12
     Taxes 12
     The Seligman Mutual Funds 13

Financial Highlights 15

How to Contact Us 17

For More Information back cover


TIMES CHANGE ... VALUES ENDURE
<PAGE>

The Fund

Investment Objectives

The Fund's investment objectives are to produce favorable, but not the highest,
current income and long-term growth of both income and capital value, without
exposing capital to undue risk.

Principal Investment Strategies

The Fund uses the following principal investment strategies to seek its
investment objectives:
Generally, the Fund invests a majority of its assets in common stocks, which
are broadly diversified among a number of industries. The Fund usually invests
in the common stock of larger US companies; however, it may invest in companies
of any size. While common stocks have for many years been the predominant type
of security owned by the Fund, substantial portions of the Fund's assets have
been held, and may be held, in cash and fixed-income securities.

The Fund uses a bottom-up stock selection approach. This means the investment
manager concentrates on individual company fundamentals, rather than on a
particular industry. The Fund seeks to purchase strong, well-managed companies
that have the potential for solid earnings growth and dividend increases.

The investment manager looks to identify companies that have attractive
dividend yields relative to their industry and that typically display
relatively low valuations based on one or more of the following measures:
price-to-earnings, price-to-cash flow, price-to-sales, and price-to-book value.
The investment manager then uses in-depth research into each company that meets
its preliminary criteria to identify those companies that it believes possess a
catalyst for earnings acceleration (i.e., a specific reason to expect an
acceleration in the rate of growth in earnings).

The Fund generally sells a stock if the investment manager believes one or more
of the following:

  . The stock is over valued or fully valued
  . Its dividend yield is not competitive compared to the yields offered by
    other securities in its industry
  . Its earnings are disappointing or the catalyst for earnings acceleration
    no longer exists
  . The company's underlying fundamentals have deteriorated
  . There are more attractive investment opportunities

The Fund may purchase American Depositary Receipts (ADRs), which are publicly
traded instruments generally issued by domestic banks or trust companies that
represent a security of a foreign issuer. The Fund may invest up to 15% of its
net assets in illiquid securities (i.e., securities that cannot be readily
sold) and may invest up to 10% of its total assets directly in foreign
securities. The limit on foreign securities does not include ADRs, or
commercial paper and certificates of deposit issued by foreign banks.

The Fund may, from time to time, take temporary defensive positions that are
inconsistent with its principal strategies in seeking to minimize extreme
volatility caused by adverse market, economic, or other conditions. This could
prevent the Fund from achieving its investment objectives.

The Fund may change its principal strategies if the Fund's Board of Directors
believes doing so is consistent with the Fund's investment objectives. The
Fund's objectives may be changed only with shareholder approval.

There is no guarantee that the Fund will achieve its objectives.

                                       1
<PAGE>

Principal Risks

Stock prices fluctuate. Therefore, as with any fund that invests in stocks, the
Fund's net asset value will fluctuate, especially in the short term. You may
experience a decline in the value of your investment and you could lose money
if you sell your shares at a price lower than you paid for them.

The Fund may not invest more than 25% of its total assets in securities of
companies in any one industry. The Fund may, however, invest more heavily in
certain industries believed to offer good investment opportunities. If an
industry in which the Fund is invested falls out of favor, the Fund's
performance may be negatively affected.

The Fund's performance may be affected by the broad investment environment in
the US or international securities markets, which is influenced by, among other
things, interest rates, inflation, politics, fiscal policy, and current events.

Stocks of large US companies, like those in which the Fund usually invests,
have experienced an extended period of strong performance. However, if investor
sentiment changes, the value of large company stocks may decline. This could
have an adverse effect on the Fund's performance.

Foreign securities or illiquid securities in the Fund's portfolio involve
higher risk and may subject the Fund to higher price volatility. Investing in
securities of foreign issuers involves risks not associated with US
investments, including settlement risks, currency fluctuations, local
withholding and other taxes, different financial reporting practices and
regulatory standards, high costs of trading, changes in political conditions,
expropriation, investment and repatriation restrictions, and settlement and
custody risks.

The Fund may actively and frequently trade securities in its portfolio to carry
out its principal strategies. A high portfolio turnover rate increases
transaction costs which may increase the Fund's expenses. Frequent and active
trading may cause adverse tax consequences for investors in the Fund due to an
increase in short-term capital gains.

An investment in the Fund is not a deposit in a bank and is not insured or
guaranteed by the Federal Deposit Insurance Corporation or any other government
agency.

                                       2
<PAGE>

Past Performance

The Fund offers four Classes of shares. The information below provides some
indication of the risks of investing in the Fund by showing how the performance
of Class A shares has varied year to year, as well as how the performance of
each Class compares to one widely-used measure of stock performance, and one
measure of the performance of mutual funds with investment objectives similar
to the Fund.

The following performance information is designed to assist you in comparing
the returns of the Fund with the returns of other mutual funds. How the Fund
has performed in the past, however, is not necessarily an indication of how the
Fund will perform in the future. Total returns will vary between each Class of
shares due to the different fees and expenses of each Class.

The Class A annual total returns presented in the bar chart do not reflect the
effect of any sales charges. If these charges were included, the returns would
be lower. The average annual total returns presented in the table below the
chart do reflect the effect of the applicable sales charges. Both the bar chart
and table assume that all dividends and capital gain distributions were
reinvested.


                         Class A Annual Total Returns

 1990    1991    1992    1993    1994    1995    1996    1997    1998    1999
- ------  ------  ------  ------  ------  ------  ------  ------  ------  ------
- -3.89%  29.93%  10.86%  14.86%  -1.89%  28.17%  15.44%  23.58%  17.40%   3.82%


             Best quarter return: 16.42% - quarter ended 3/31/91.
            Worst quarter return: -17.44% - quarter ended 9/30/90.


           Average Annual Total Returns - Periods Ended 12/31/99


<TABLE>
<CAPTION>
                                                   CLASS B         CLASS C         CLASS D
                           ONE   FIVE    TEN   SINCE INCEPTION SINCE INCEPTION SINCE INCEPTION
                          YEAR   YEARS  YEARS      4/22/96        5/27/99*         5/3/93
                          -----  -----  -----  --------------- --------------- ---------------
  <S>                     <C>    <C>    <C>    <C>             <C>             <C>
  Class A                 -1.14% 16.25% 12.72%        --              --              --
  Class B                 -1.76    n/a    n/a       13.10%            --              --
  Class C                   n/a    n/a    n/a         --            -1.28%            --
  Class D                  2.02  16.49    n/a         --              --            13.04%
  S&P 500 Index           21.04  28.55  18.21       26.78(/1/)      13.68(/2/)      22.39(/3/)
  Lipper Growth & Income
   Funds Average          13.15  21.56  14.75       18.66(/1/)       6.35(/2/)      17.09(/3/)
</TABLE>

 The Standard & Poor's 500 Composite Stock Price Index (S&P 500 Index) and
 the Lipper Growth & Income Funds Average are unmanaged benchmarks that
 assume the reinvestment of dividends and capital gain distributions. The
 Lipper Growth & Income Funds Average does not reflect any sales charges and
 the S&P 500 Index does not reflect any fees or sales charges. The S&P 500
 Index measures the performance of 500 of the largest US stocks, and the
 Lipper Growth & Income Funds Average measures the performance of mutual
 funds with investment objectives similar to the Fund.

  *Total returns for periods of less than one year are not annualized.
 (/1/)From April 30, 1996.

 (/2/)From May 31, 1999.

 (/3/)From April 30, 1993.
                                       3
<PAGE>


Fees and Expenses

The table below summarizes the fees and expenses that you may pay as a
shareholder of the Fund. Each Class of shares has its own sales charge schedule
and is subject to different ongoing 12b-1 fees. Shareholder fees are charged
directly to your account. Annual fund operating expenses are deducted from Fund
assets and are therefore paid indirectly by you and other shareholders of the
Fund.

<TABLE>
<CAPTION>
 Shareholder Fees                           Class A      Class B Class C Class D
 ----------------                           -------      ------- ------- -------
 <S>                                        <C>          <C>     <C>     <C>
 Maximum Sales Charge (Load)..............   4.75%           5%      2%      1%
 Maximum Sales Charge (Load) on Purchases
  (as a % of offering price)..............   4.75% (/1/)   none      1%    none
 Maximum Contingent Deferred Sales Charge
  (Load) (CDSC) on Redemptions (as a % of
  original purchase price or current net
  asset value, whichever is less).........    none(/1/)      5%      1%      1%
 Annual Fund Operating Expenses for 1999
 ---------------------------------------
 (as a percentage of average net assets)
 Management Fees..........................    .65%         .65%    .65%    .65%
 Distribution and/or Service (12b-1)
  Fees....................................    .24%        1.00%   1.00%   1.00%
 Other Expenses...........................    .24%         .24%    .24%    .24%
                                             -----        -----   -----   -----
 Total Annual Fund Operating Expenses.....   1.13%        1.89%   1.89%   1.89%
                                             =====        =====   =====   =====
</TABLE>
(/1/If)you buy Class A shares for $1,000,000 or more you will not pay an
    initial sales charge, but your shares will be subject to a 1% CDSC if sold
    within 18 months.

 Management Fees:
 Fees paid out of Fund
 assets to the
 investment manager to
 compensate it for
 managing the Fund.

 12b-1 Fees:
 Fees paid by each
 Class, pursuant to a
 plan adopted by the
 Fund under Rule 12b-1
 of the Investment
 Company Act of 1940.
 The plan allows each
 Class to pay
 distribution and/or
 service fees for the
 sale and distribution
 of its shares and for
 providing services to
 shareholders.

 Other Expenses:

 Miscellaneous expenses
 of running the Fund,
 including such things
 as transfer agency,
 registration, custody,
 auditing and legal
 fees.
Example

This example is intended to help you compare the expenses of investing in the
Fund with the expenses of investing in other mutual funds. It assumes (1) you
invest $10,000 in the Fund for each period and then sell all of your shares at
the end of that period, (2) your investment has a 5% return each year, and (3)
the Fund's operating expenses remain the same. Although your actual expenses
may be higher or lower, based on these assumptions your expenses would be:

<TABLE>
<CAPTION>
         1 Year 3 Years 5 Years 10 Years
         ------ ------- ------- --------
<S>      <C>    <C>     <C>     <C>
Class A   $585   $817   $1,068   $1,784
Class B    692    894    1,221    2,013+
Class C    389    688    1,111    2,289
Class D    292    594    1,021    2,212
</TABLE>

If you did not sell your shares at the end of each period, your expenses would
be:

<TABLE>
<CAPTION>
         1 Year 3 Years 5 Years 10 Years
         ------ ------- ------- --------
<S>      <C>    <C>     <C>     <C>
Class A   $585   $817   $1,068   $1,784
Class B    192    594    1,021    2,013+
Class C    290    688    1,111    2,289
Class D    192    594    1,021    2,212
</TABLE>

+ Class B shares will automatically convert to Class A shares after eight
  years.

                                       4
<PAGE>

Management

The Fund's Board of Directors provides broad supervision over the affairs of
the Fund.

J. & W. Seligman & Co. Incorporated (Seligman), 100 Park Avenue, New York, New
York 10017, is the manager of the Fund. Seligman manages the investment of the
Fund's assets, including making purchases and sales of portfolio securities
consistent with the Fund's investment objectives and strategies, and
administers the Fund's business and other affairs.

Established in 1864, Seligman currently serves as manager to 20 US registered
investment companies, which offer more than 50 investment portfolios with
approximately $30 billion in assets as of March 31, 2000. Seligman also

provides investment management or advice to institutional or other accounts
having an aggregate value at March 31, 2000, of approximately $12 billion.

The Fund pays Seligman a fee for its management services. The fee rate declines
as the Fund's net assets increase. It is equal to an annual rate of .65% of the
Fund's average daily net assets on the first $1 billion of net assets, .60% of
the Fund's average daily net assets on the next $1 billion of net assets and
 .55% of the Fund's average daily net assets in excess of $2 billion. For the
year ended December 31, 1999, the management fee paid by the Fund to Seligman
was equal to an annual rate of .65% of the Fund's average daily net assets.

  Affiliates of Seligman:

  Seligman Advisors, Inc.:
  The Fund's general
  distributor; responsible
  for accepting orders for
  purchases and sales of Fund
  shares.

  Seligman Services, Inc.:
  A limited purpose
  broker/dealer; acts as the
  broker/dealer of record for
  shareholder accounts that
  do not have a designated
  broker or financial
  advisor.

  Seligman Data Corp. (SDC):
  The Fund's shareholder
  service agent; provides
  shareholder account
  services to the Fund at
  cost.

Portfolio Management

The Fund is managed by Seligman's Growth and Income Team, which is headed by
Mr. Charles C. Smith, Jr. Mr. Smith, a Managing Director of Seligman, is a Vice
President of the Fund and has been Portfolio Manager of the Fund since December
1991. Mr. Smith joined Seligman in 1985 as Vice President, Investment Officer.
He became Senior Vice President, Senior Investment Officer in 1992, and
Managing Director in January 1994. Mr. Smith also manages Seligman Income Fund,
Inc.; and he manages Seligman Common Stock Portfolio and Seligman Income
Portfolio, two portfolios of Seligman Portfolios, Inc., and Tri-Continental
Corporation.

Mr. Rodney D. Collins, Senior Vice President, Investment Officer of Seligman
since January 1999, co-manages the Fund. Mr. Collins joined Seligman in 1992 as
an Investment Associate, and was named a Vice President, Investment Officer in
January 1995. Mr. Collins also co-manages Seligman Income Fund, Inc.; and he
co-manages Seligman Common Stock Portfolio and Seligman Income Portfolio, two
portfolios of Seligman Portfolios, Inc., and Tri-Continental Corporation.

                                       5
<PAGE>

Shareholder Information

Deciding Which Class of Shares to Buy

Each of the Fund's Classes represents an interest in the same portfolio of
investments. However, each Class has its own sales charge schedule, and its
ongoing 12b-1 fees may differ from other Classes. When deciding which Class of
shares to buy, you should consider, among other things:
  . The amount you plan to invest.
  . How long you intend to remain invested in the Fund, or another Seligman
    mutual fund.
  . If you would prefer to pay an initial sales charge and lower ongoing 12b-1
    fees, or be subject to a CDSC and pay higher ongoing 12b-1 fees.
  . Whether you may be eligible for reduced or no sales charges when you buy
    or sell shares.
Your financial advisor will be able to help you decide which Class of shares
best meets your needs.

Class A
  . Initial sales charge on Fund purchases, as set forth below:
<TABLE>
<CAPTION>
                                                       Sales Charge   Regular Dealer
                                    Sales Charge          as a %         Discount
                                       as a %             of Net        as a % of
   Amount of your Investment   of Offering Price(/1/) Amount Invested Offering Price
   -------------------------   ---------------------- --------------- --------------
   <S>                         <C>                    <C>             <C>
   Less than $ 50,000                   4.75%              4.99%           4.25%
   $50,000 - $ 99,999                   4.00               4.17            3.50
   $100,000 - $249,999                  3.50               3.63            3.00
   $250,000 - $499,999                  2.50               2.56            2.25
   $500,000 - $999,999                  2.00               2.04            1.75
   $1,000,000 and
    over(/2/)                           0.00               0.00            0.00
</TABLE>

  (/1/"Offering)Price" is the amount that you actually pay for Fund shares;
      it includes the initial sales charge.
  (/2/You)will not pay a sales charge on purchases of $1 million or more, but
      you will be subject to a 1% CDSC if you sell your shares within 18
      months.

  . Annual 12b-1 fee (for shareholder services) of up to 0.25%.
  . No sales charge on reinvested dividends or capital gain distributions.
  . Certain employer-sponsored defined contribution-type plans can purchase
    shares with no initial sales charge.

Class B
  . No initial sales charge on purchases.
  . A declining CDSC on shares sold within 6 years of purchase:

<TABLE>                                        Your purchase of Class B
<CAPTION>                                      shares must be for less than
   Years Since Purchase                  CDSC  $250,000, because if you
   --------------------                  ----  invest $250,000 or more, you
   <S>                                   <C>   will pay less in fees and
   Less than 1 year                        5%  charges if you buy another
   1 year or more but less than 2 years    4   Class of shares.
   2 years or more but less than 3
     years                                 3
   3 years or more but less than 4
     years                                 3
   4 years or more but less than 5
     years                                 2
   5 years or more but less than 6
     years                                 1
   6 years or more                         0
</TABLE>

  . Annual 12b-1 fee (for distribution and shareholder services) of 1.00%.
  . Automatic conversion to Class A shares after eight years, resulting in
    lower ongoing 12b-1 fees.
  . No CDSC when you sell shares purchased with reinvested dividends or capital
    gain distributions.

                                       6
<PAGE>

Class C
  . Initial sales charge on Fund purchases, as set forth below:
<TABLE>
<CAPTION>
                                                              Regular Dealer
                            Sales Charge       Sales Charge      Discount
   Amount of your              as a %          as a % of Net    as a % of
   Investment          of Offering Price(/1/) Amount Invested Offering Price
   --------------      ---------------------- --------------- --------------
   <S>                 <C>                    <C>             <C>
   Less than $100,000           1.00%              1.01%           1.00%
   $100,000--$249,999           0.50               0.50            0.50
   $250,000--
    $1,000,000(/2/)             0.00               0.00            0.00
</TABLE>
  (/1/) "Offering Price" is the amount that you actually pay for Fund shares;
        it includes the initial sales charge.
  (/2/) Your purchase of Class C shares must be for less than $1,000,000
        because if you invest $1,000,000 or more you will pay less in fees
        and charges if you buy Class A shares.
  . A 1% CDSC on shares sold within eighteen months of purchase.
  . Annual 12b-1 fee (for distribution and shareholder services) of 1.00%.
  . No automatic conversion to Class A shares, so you will be subject to
    higher ongoing 12b-1 fees indefinitely.

  . No sales charge on reinvested dividends or capital gain distributions.

  . No CDSC when you sell shares purchased with reinvested dividends or
    capital gain distributions.

Class D*
  . No initial sales charge on purchases.
  . A 1% CDSC on shares sold within one year of purchase.
  . Annual 12b-1 fee (for distribution and shareholder services) of 1.00%.
  . No automatic conversion to Class A shares, so you will be subject to
    higher ongoing 12b-1 fees indefinitely.
  . No CDSC when you sell shares purchased with reinvested dividends or
    capital gain distributions.

  * Class D shares are not available to all investors. You may purchase Class
    D shares only (1) if you already own Class D shares of the Fund or
    another Seligman mutual fund, (2) if your financial advisor of record
    maintains an omnibus account at SDC, or (3) pursuant to a 401(k) or other
    retirement plan program for which Class D shares are already available or
    for which the sponsor requests Class D shares because the sales charge
    structure of Class D shares is comparable to the sales charge structure
    of the other funds offered under the program.

Because the Fund's 12b-1 fees are paid out of each Class's assets on an
ongoing basis, over time these fees will increase your investment expenses
and may cost you more than other types of sales charges.

The Fund's Board of Directors believes that no conflict of interest currently
exists between the Fund's Class A, Class B, Class C and Class D shares. On an
ongoing basis, the Directors, in the exercise of their fiduciary duties under
the Investment Company Act of 1940 and Maryland law, will seek to ensure that
no such conflict arises.

How CDSCs Are Calculated

To minimize the amount of the CDSC you may pay when you sell your shares, the
Fund assumes that shares acquired through reinvested dividends and capital
gain distributions (which are not subject to a CDSC) are sold first. Shares
that have been in your account long enough so they are not subject to a CDSC
are sold next. After these shares are exhausted, shares will be sold in the
order they were purchased (oldest to youngest). The amount of any CDSC that
you pay will be based on the shares' original purchase price or current net
asset value, whichever is less.

You will not pay a CDSC when you exchange shares of the Fund to buy the same
class of shares of any other Seligman mutual fund. For the purpose of
calculating the CDSC when you sell shares that you acquired by exchanging
shares of the Fund, it will be assumed that you held the shares since the
date you purchased the shares of the Fund.

                                       7
<PAGE>

Pricing of Fund Shares

When you buy or sell shares, you do so at the Class's net asset value (NAV)
next calculated after Seligman Advisors accepts your request. Any applicable
sales charge will be added to the purchase price for Class A shares and Class C
shares. Purchase or sale orders received by an authorized dealer or financial
advisor by the close of regular trading on the New York Stock Exchange (NYSE)
(normally 4:00 p.m. Eastern time) and accepted by Seligman Advisors before the
close of business (5:00 p.m. Eastern time) on the same day will be executed at
the Class's NAV calculated as of the close of regular trading on the NYSE on
that day. Your broker/dealer or financial advisor is responsible for forwarding
your order to Seligman Advisors before the close of business.

 NAV:                  If your buy or sell order is received by your
 Computed              broker/dealer or financial advisor after the close of
 separately for        regular trading on the NYSE, or is accepted by Seligman
 each Class by         Advisors after the close of business, the order will be
 dividing that         executed at the Class's NAV calculated as of the close
 Class's share of      of regular trading on the next NYSE trading day. When
 the net assets of     you sell shares, you receive the Class's per share NAV,
 the Fund (i.e.,       less any applicable CDSC.
 its assets less
 liabilities) by       The NAV of the Fund's shares is determined each day,
 the total number      Monday through Friday, on days that the NYSE is open for
 of outstanding        trading. Because of their higher 12b-1 fees, the NAV of
 shares of the         Class B, Class C and Class D shares will generally be
 Class.                lower than the NAV of Class A shares of the Fund.

                       Securities owned by the Fund are valued at current
                       market prices. If reliable market
prices are unavailable, securities are valued in accordance with procedures
approved by the Fund's Board of Directors.

Opening Your Account

The Fund's shares are sold through authorized broker/dealers or financial
advisors who have sales agreements with Seligman Advisors. There are several
programs under which you may be eligible for reduced sales charges or lower
minimum investments. Ask your financial advisor if any of these programs apply
to you. Class D shares are not available to all investors. For more
information, see "Deciding Which Class of Shares to Buy--Class D."

To make your initial investment in the Fund, contact your financial advisor or
complete an account application and send it with your check directly to SDC at
the address provided on the account application. If you do not choose a Class,
your investment will automatically be made in Class A shares.

The required minimum initial investments are:

    . Regular (non-retirement) accounts:$1,000

    . For accounts opened concurrently with Invest-A-Check(R):
      $100 to open if you will be making monthly investments
      $250 to open if you will be making quarterly investments

 You may buy shares of the
 Fund for all types of tax-
 deferred retirement plans.
 Contact Retirement Plan
 Services at the address or
 phone number listed on the
 inside back cover of this
 prospectus for information
 and to receive the proper
 forms.

If you buy shares by check and subsequently
sell the shares, SDC will not
send your proceeds until your check clears, which could take up to 15 calendar
days from the date of your purchase.

You will be sent a statement confirming your purchase, and any subsequent
transactions in your account. You will also be sent quarterly and annual
statements detailing your transactions in the Fund and the other Seligman funds
you own under the same account number. Duplicate account statements will be
sent to you free of charge for the current year and most recent prior year.
Copies of year-end statements for prior years are available for a fee of $10
per year, per account, with a maximum charge of $150 per account. Send your
request and a check for the fee to SDC.

   If you want to be able to buy, sell, or exchange shares by telephone,
    you should complete an application when you open your account. This
   will prevent you from having to complete a supplemental election form
         (which may require a signature guarantee) at a later date.



                                       8
<PAGE>

How to Buy Additional Shares

After you have made your initial investment, there are many options available
to make additional purchases of Fund shares. Subsequent investments must be for
$100 or more.

Shares may be purchased through your authorized financial advisor, or you may
send a check directly to SDC. Please provide either an investment slip or a
note that provides your name(s), Fund name, and account number. Unless you
indicate otherwise, your investment will be made in the Class you already own.
Send investment checks to:
      Seligman Data Corp.
      P.O. Box 9766
      Providence, RI 02940-9766

Your check must be in US dollars and be drawn on a US bank. You may not use
third party or credit card convenience checks for investment.

You may also use the following account services to make additional investments:

Invest-A-Check(R). You may buy Fund shares electronically from a savings or
checking account of an Automated Clearing House (ACH) member bank. If your bank
is not a member of ACH, the Fund will debit your checking account by
preauthorized checks. You may buy Fund shares at regular monthly intervals in
fixed amounts of $100 or more, or regular quarterly intervals in fixed amounts
of $250 or more. If you use Invest-A-Check(R), you must continue to make
automatic investments until the Fund's minimum initial investment of $1,000 is
met or your account may be closed.

Automatic Dollar-Cost-Averaging. If you have at least $5,000 in Seligman Cash
Management Fund, you may exchange uncertificated shares of that fund to buy
shares of the same class of another Seligman mutual fund at regular monthly
intervals in fixed amounts of $100 or more or regular quarterly intervals in
fixed amounts of $250 or more. If you exchange Class A shares or Class C
shares, you may pay an initial sales charge to buy Fund shares.

Automatic CD Transfer. You may instruct your bank to invest the proceeds of a
maturing bank certificate of deposit (CD) in shares of the Fund. If you wish to
use this service, contact SDC or your financial advisor to obtain the necessary
forms. Because your bank may charge you a penalty, it is not normally advisable
to withdraw CD assets before maturity.

Dividends From Other Investments. You may have your dividends from other
companies paid to the Fund. (Dividend checks must include your name, account
number, Fund name, and Class of shares.)

Direct Deposit. You may buy Fund shares electronically with funds from your
employer, the IRS, or any other institution that provides direct deposit. Call
SDC for more information.

Seligman Time Horizon MatrixSM. (Requires an initial total investment of
$10,000.) This is a needs-based investment process, designed to help you and
your financial advisor plan to seek your long-term financial goals. It
considers your financial needs, and helps frame a personalized asset allocation
strategy around the cost of your future commitments and the time you have to
meet them. Contact your financial advisor for more information.

Seligman HarvesterSM. If you are a retiree or nearing retirement, this program
is designed to help you establish an investment strategy that seeks to meet
your needs throughout your retirement. The strategy is customized to your
personal financial situation by allocating your assets to seek to address your
income requirements, prioritizing your expenses, and establishing a prudent
withdrawal schedule. Contact your financial advisor for more information.

                                       9
<PAGE>

How to Exchange Shares Among the Seligman Mutual Funds

You may sell Fund shares to buy shares of the same Class of another Seligman
mutual fund, or you may sell shares of another Seligman mutual fund to buy Fund
shares. Exchanges will be made at each fund's respective NAV. You will not pay
an initial sales charge when you exchange, unless you exchange Class A shares
or Class C shares of Seligman Cash Management Fund to buy shares of the same
Class of the Fund or another Seligman mutual fund.

Only your dividend and capital gain distribution options and telephone services
will be automatically carried over to any new fund account. If you wish to
carry over any other account options (for example, Invest-A-Check(R) or
Systematic Withdrawals) to the new fund, you must specifically request so at
the time of your exchange.

If you exchange into a new fund, you must exchange enough to meet the new
fund's minimum initial investment.

See "The Seligman Mutual Funds" for a list of the funds available for exchange.
Before making an exchange, contact your financial advisor or SDC to obtain the
applicable fund prospectus(es). You should read and understand a fund's
prospectus before investing. Some funds may not offer all Classes of shares.

How to Sell Shares

The easiest way to sell Fund shares is by phone. If you have telephone
services, you may be able use this service to sell Fund shares. Restrictions
apply to certain types of accounts. Please see "Important Policies That May
Affect Your Account."

When you sell Fund shares by phone, a check for the proceeds is sent to your
address of record. If you have current ACH bank information on file, you may
have the proceeds of the sale of your Fund shares directly deposited into your
bank account (typically, 3-4 business days after your shares are sold).

You may sell shares to the Fund through a broker/dealer or your financial
advisor. The Fund does not charge any fees or expenses, other than any
applicable CDSC for this transaction; however, the dealer or financial advisor
may charge a service fee. Contact your financial advisor for more information.

You may always send a written request to sell Fund shares; however, it may take
longer to get your money.

As an additional measure to protect you and the Fund, SDC may confirm written
redemption requests that are (1) for $25,000 or more, or (2) directed to be
paid to an alternate payee or sent to an address other than the address of
record, with you or your financial advisor by telephone before sending you your
money. This will not affect the date on which your redemption request is
actually processed.

You will need to guarantee your signature(s) if the proceeds are:
      (1) $50,000 or more;

      (2) to be paid to someone other than the account owner; or
      (3) mailed to other than your address of record.

   Signature Guarantee:
   Protects you and the Fund
   from fraud. It guarantees
   that a signature is
   genuine. A guarantee must
   be obtained from an
   eligible financial
   institution. Notarization
   by a notary public is not
   an acceptable guarantee.

You may need to provide additional documents to sell Fund shares if you are:
 . a corporation;
 . an executor or administrator;
 . a trustee or custodian; or
 . in a retirement plan.

If your Fund shares are represented by certificates, you will need to surrender
the certificates to SDC before you sell your shares.

Contact your financial advisor or SDC's Shareholder Services Department for
information on selling your shares under any of the above circumstances.

You may also use the following account service to sell Fund shares:

Systematic Withdrawal Plan. If you have at least $5,000 in the Fund, you may
withdraw (sell) a fixed dollar amount (minimum of $50) of uncertificated shares
at regular intervals. A check will be sent to you at your address of record or,
if you have current ACH bank information on file, you may have your payments
directly deposited to your predesignated bank account in 3-4 business days
after your shares are sold. If you bought $1,000,000 or more of Class A shares
without an initial sales charge, your withdrawals may be subject to a 1% CDSC
if they occur within 18 months of purchase. If you own Class B, Class C, or
Class D shares and reinvest your dividends and capital gain distributions, you
may withdraw 12%, 10%, or 10%, respectively, of the value of your Fund account
(at the time of election) annually without a CDSC.

                                       10
<PAGE>

Important Policies That May Affect Your Account

To protect you and other shareholders, the Fund reserves the right to:

 . Refuse an exchange request if:

   1. you have exchanged twice from the same fund in any three-month period;

   2. the amount you wish to exchange equals the lesser of $1,000,000 or 1%
      of the Fund's net assets; or

   3. you or your financial advisor have been advised that previous patterns
      of purchases and sales or exchanges have been considered excessive.

 . Refuse any request to buy Fund shares;

 . Reject any request received by telephone;

 . Suspend or terminate telephone services;

 . Reject a signature guarantee that SDC believes may be fraudulent;

 . Close your fund account if its value falls below $500;

 . Close your account if it does not have a certified taxpayer identification
   number.

Telephone Services

You and your broker/dealer or financial advisor will be able to place the
following requests by telephone, unless you indicate on your account
application that you do not want telephone services:

 . Sell uncertificated shares (up to $50,000 per day, payable to account
   owner(s) and mailed to address of record);

 . Exchange shares betweeen funds;

 . Change dividend and/or capital gain distribution options;

 . Change your address;

 . Establish systematic withdrawals to address of record.

If you do not complete an account application when you open your account,
telephone services must be elected on a supplemental election form (which may
require a signature guarantee).

Restrictions apply to certain types of accounts:

 . Trust accounts on which the current trustee is not listed may not sell Fund
   shares by phone;

 . Corporations may not sell Fund shares by phone;

 . IRAs may only exchange Fund shares or request address changes by phone;

 . Group retirement plans may not sell Fund shares by phone; plans that allow
   participants to exchange by phone must provide a letter of authorization
   signed by the plan custodian or trustee and provide a supplemental election
   form signed by all plan participants.

Unless you have current ACH bank information on file, you will not be able to
sell Fund shares by phone within thirty days following an address change.

Your request must be communicated to an SDC representative. You may not request
any phone transactions via the automated access line.

You may cancel telephone services at any time by sending a written request to
SDC. Each account owner, by accepting or adding telephone services, authorizes
each of the other owners to make requests by phone. Your broker/dealer or
financial advisor representative may not establish telephone services without
your written authorization. SDC will send written confirmation to the address
of record when telephone services are added or terminated.

During times of heavy call volume, you may not be able to get through to SDC by
phone to request a sale or exchange of Fund shares. In this case, you may need
to write, and it may take longer for your request to be processed. The Fund's
NAV may fluctuate during this time.

The Fund and SDC will not be liable for processing requests received by phone
as long as it was reasonable to believe that the request was genuine.

Reinstatement Privilege

If you sell Fund shares, you may, within 120 calendar days, use part or all of
the proceeds to buy shares of the Fund or any other Seligman mutual fund
(reinstate your investment) without paying an initial sales charge or, if you
paid a CDSC when you sold your shares, receiving a credit for the applicable
CDSC paid. This privilege is available only once each calendar year. Contact
your financial advisor for more information. You should consult your tax
advisor concerning possible tax consequences of exercising this privilege.

                                       11
<PAGE>

Dividends and Capital Gain Distributions

The Fund generally pays any dividends from its net investment income quarterly
and distributes net capital gains realized on investments annually.

                         You may elect to:


                         (1) reinvest both dividends and capital gain
 Dividend:                   distributions;

                         (2) receive dividends in cash and reinvest capital
 A payment by a              gain distributions; or
 mutual fund,
 usually derived         (3) receive both dividends and capital gain
 from the fund's             distributions in cash.
 net investment
 income                  Your dividends and capital gain distributions will be
 (dividends and          reinvested if you do not instruct otherwise or if you
 interest earned         own Fund shares in a Seligman tax-deferred retirement
 on portfolio            plan.
 securities less
 expenses).              If you want to change your election, you may write SDC
                         at the address listed on the back cover of this
                         prospectus or, if you have telephone services, you or
                         your financial advisor may call SDC. Your request must
                         be received by SDC before the record date to be
                         effective for that dividend or capital gain
                         distribution.


 Capital Gain Distribution:
 A payment to
 mutual fund
 shareholders
 which
 represents
 profits
 realized on the
 sale of
 securities in a
 fund's
 portfolio.

                         Cash dividends or capital gain distributions will be
                         sent by check to your address of record or, if you
                         have current ACH bank information on file, directly
                         deposited into your predesignated bank account within
                         3-4 business days from the payable date.

                         Dividends and capital gain distributions are
                         reinvested to buy additional Fund shares on the
                         payable date using the NAV of the ex-dividend date.

 Ex-dividend Date:       Dividends on Class B, Class C and Class D shares will
 The day on              be lower than the dividends on Class A shares as a
 which any               result of their higher 12b-1 fees. Capital gain
 declared                distributions will be paid in the same amount for each
 distributions           Class.
 (dividends or
 capital gains)
 are deducted
 from a fund's
 assets before
 it calculates
 its NAV.

Taxes

The tax treatment of dividends and capital gain distributions is the same
whether you take them in cash or reinvest them to buy additional Fund shares.
Tax-deferred retirement plans are not taxed currently on dividends or capital
gain distributions or on exchanges.

Dividends paid by the Fund are taxable to you as ordinary income. You may be
taxed at different rates on capital gains distributed by the Fund depending on
the length of time the Fund holds its assets.

When you sell Fund shares, any gain or loss you realize will generally be
treated as a long-term capital gain or loss if you held your shares for more
than one year, or as a short-term capital gain or loss if you held your shares
for one year or less. However, if you sell Fund shares on which a long-term
capital gain distribution has been received and you held the shares for six
months or less, any loss you realize will be treated as a long-term capital
loss to the extent that it offsets the long-term capital gain distribution.

An exchange of Fund shares is a sale and may result in a gain or loss for
federal income tax purposes.

Each January, you will be sent information on the tax status of any
distributions made during the previous calendar year. Because each
shareholder's situation is unique, you should always consult your tax advisor
concerning the effect income taxes may have on your individual investment.

                                       12
<PAGE>

The Seligman Mutual Funds

Equity

Specialty
- --------------------------------------------------------------------------------
Seligman Communications and
Information Fund

Seeks capital appreciation by investing in companies operating in all aspects
of the communications, information, and related industries.

Seligman Global Technology Fund

Seeks long-term capital appreciation by investing primarily in global
securities (US and non-US) of companies in the technology and technology-
related industries.

Seligman Emerging Markets Fund

Seeks long-term capital appreciation by investing primarily in equity
securities of companies in emerging markets.

Small Company
- --------------------------------------------------------------------------------
Seligman Frontier Fund

Seeks growth of capital by investing primarily in small company growth stocks.

Seligman Small-Cap Value Fund

Seeks long-term capital appreciation by investing in equities of small
companies, deemed to be "value" companies by the investment manager.

Seligman Global Smaller Companies Fund

Seeks long-term capital appreciation by investing in securities of smaller
companies around the world, including the US.

Medium Company
- --------------------------------------------------------------------------------
Seligman Capital Fund

Seeks capital appreciation by investing in the common stocks of companies with
significant potential for growth.

Large Company
- --------------------------------------------------------------------------------
Seligman Growth Fund

Seeks long-term growth of capital value and an increase in future income.

Seligman Global Growth Fund

Seeks capital appreciation by investing primarily in equity securities of
companies that have the potential to benefit from global economic or social
trends.

Seligman Large-Cap Value Fund

Seeks long-term capital appreciation by investing in equities of large
companies, deemed to be "value" companies by the investment manager.

Seligman Common Stock Fund

Seeks favorable, but not the highest, current income and long-term growth of
both income and capital, without exposing capital to undue risk.

Seligman International Growth Fund

Seeks long-term capital appreciation by investing in securities of medium- to
large-sized companies, primarily in the developed markets outside the US.

Balanced
- --------------------------------------------------------------------------------
Seligman Income Fund

Seeks high current income and improvement in capital value over the long term,
consistent with prudent risk of capital.

Fixed-Income

Income
- --------------------------------------------------------------------------------
Seligman High-Yield Bond Fund

Seeks to maximize current income by investing in a diversified portfolio of
high-yielding, high-risk corporate bonds, commonly referred to as "junk bonds."

Seligman U.S. Government Securities Fund

Seeks high current income primarily by investing in a diversified portfolio of
securities guaranteed by the US government, its agencies, or instrumentalities,
which have maturities greater than one year.

Municipal
- --------------------------------------------------------------------------------
Seligman Municipal Funds:
National Fund

Seeks maximum income, exempt from regular federal income taxes.

State-specific funds:*

Seek to maximize income exempt from regular federal income taxes and from
regular income taxes in the designated state.
<TABLE>
 <S>                            <C>                                             <C>
 California                     Louisiana                                       New Jersey
 .High-Yield                    Maryland                                        New York
 .Quality                       Massachusetts                                   North Carolina
 Colorado                       Michigan                                        Ohio
 Florida                        Minnesota                                       Oregon
 Georgia                        Missouri                                        Pennsylvania
                                                                                South Carolina
</TABLE>
* A small portion of income may be subject to state taxes.

Money Market
- --------------------------------------------------------------------------------
Seligman Cash Management Fund

Seeks to preserve capital and to maximize liquidity and current income, by
investing only in high-quality money market securities having a maturity of 90
days or less. The fund seeks to maintain a constant net asset value of $1.00
per share.

                                       13
<PAGE>

Asset Allocation
Seligman Time Horizon/Harvester Series, Inc. is an asset-allocation type mutual
fund. It offers four different asset allocation funds that pursue their
investment objectives by allocating their assets among other mutual funds in
the Seligman Group.

Seligman Time Horizon 30 Fund
Seeks long-term capital appreciation by creating a portfolio of mutual funds
that invests in aggressive growth-oriented domestic and international equity
securities weighted toward small- and medium-capitalization companies.

Seligman Time Horizon 20 Fund
Seeks long-term capital appreciation by creating a portfolio of mutual funds
that invests in growth-oriented domestic and international equity securities,
with a more even weighting among small-, medium- and large-capitalization
companies than Seligman Time Horizon 30 Fund.

Seligman Time Horizon 10 Fund
Seeks capital appreciation by creating a portfolio of mutual funds that invests
in small-, medium- and large-capitalization domestic and international equity
securities as well as domestic fixed-income securities.

Seligman Harvester Fund
Seeks capital appreciation and preservation of capital with current income and
growth of income by creating a portfolio of mutual funds that invests in
medium- and large-capitalization domestic and international equity securities
supplemented by a larger allocation of fixed-income securities and cash than
Seligman Time Horizon 10 Fund.

                                       14
<PAGE>

Financial Highlights

The tables below are intended to help you understand the financial performance
of the Fund's Classes for the past five years or, if less than five years, the
period of the Class's operations. Certain information reflects financial
results for a single share of a Class that was held throughout the periods
shown. "Total return" shows the rate that you would have earned (or lost) on an
investment in the Fund, assuming you reinvested all your dividends and capital
gain distributions. Total returns do not reflect any sales charges. Deloitte &
Touche LLP, independent auditors, have audited this information. Their report,
along with the Fund's financial statements, is included in the Fund's Annual
Report, which is available upon request.

<TABLE>
<CAPTION>
                                                 CLASS A
                               ------------------------------------------------
                                         Year ended December 31,
                               ------------------------------------------------
                                 1999      1998      1997      1996      1995
                               --------  --------  --------  --------  --------
<S>                            <C>       <C>       <C>       <C>       <C>
Per Share Data:*
Net asset value, beginning of
 year........................    $15.77    $15.92    $14.89    $14.19    $12.12

                                  -----     -----     -----     -----     -----
Income from investment
 operations:
 Net investment income
  (loss).....................      0.23      0.28      0.30      0.35      0.36
 Net gains or losses on
  securities (both realized
  and unrealized)............      0.39      2.32      3.18      1.81      3.00
 Net gains or losses on
  foreign currency
  transactions (both realized
  and unrealized)............        --        --     (0.07)       --      0.01

                                  -----     -----     -----     -----     -----
Total from investment
 operations..................      0.62      2.60      3.41      2.16      3.37

                                  -----     -----     -----     -----     -----
Less distributions:
 Dividends from net
  investment income..........     (0.23)    (0.28)    (0.32)    (0.34)    (0.36)
 Distributions from capital
  gains......................     (1.23)    (2.47)    (2.06)    (1.12)    (0.94)

                                  -----     -----     -----     -----     -----
Total distributions..........     (1.46)    (2.75)    (2.38)    (1.46)    (1.30)

                                  -----     -----     -----     -----     -----
Net asset value, end of
 year........................    $14.93    $15.77    $15.92    $14.89    $14.19

                                  =====     =====     =====     =====     =====
Total Return:                      3.82%    17.40%    23.58%    15.44%    28.17%
Ratios/Supplemental Data:
Net assets, end of year (in
 thousands)..................  $684,874  $760,176  $734,635  $656,260  $614,400
Ratio of expenses to average
 net assets..................      1.13%     1.11%     1.13%     1.15%     0.93%
Ratio of net income (loss) to
 average net assets..........      1.49%     1.73%     1.83%     2.36%     2.56%
Portfolio turnover rate......     70.72%    93.67%   106.02%    56.10%    46.08%
</TABLE>
- --------------

See footnotes on page 16.

                                       15
<PAGE>

<TABLE>
<CAPTION>
                                          CLASS B                    CLASS C
                             ------------------------------------   ---------
                                   Year ended
                                  December 31,          4/22/96**   5/27/99**
                             -------------------------     to          to
                              1999     1998     1997    12/31/96    12/31/99
                             -------  -------  -------  ---------   ---------
<S>                          <C>      <C>      <C>      <C>         <C>
Per Share Data:*
Net asset value, beginning
 of period.................   $15.71   $15.88   $14.87    $14.80      $16.06

                               -----    -----    -----     -----       -----
Income from investment
 operations:
 Net investment income
  (loss) ..................     0.11     0.16     0.17      0.15       (0.01)
 Net gains or losses on
  securities (both realized
  and unrealized)..........     0.38     2.31     3.17      1.20       (0.07)
 Net gains or losses on
  foreign currency
  transactions (both
  realized and
  unrealized)..............       --       --    (0.07)       --          --

                               -----    -----    -----     -----       -----
Total from investment
 operations................     0.49     2.47     3.27      1.35       (0.08)

                               -----    -----    -----     -----       -----
Less distributions:
 Dividends from net
  investment income........    (0.12)   (0.17)   (0.20)    (0.16)      (0.08)
 Distributions from
  capital gains............    (1.23)   (2.47)   (2.06)    (1.12)      (1.03)

                               -----    -----    -----     -----       -----
Total distributions........    (1.35)   (2.64)   (2.26)    (1.28)      (1.11)

                               -----    -----    -----     -----       -----
Net asset value, end of
 period....................   $14.85   $15.71   $15.88    $14.87      $14.87

                               =====    =====    =====     =====       =====
Total Return:                   2.97%   16.48%   22.59%     9.21%       0.64%
Ratios/Supplemental Data:
Net assets, end of period
 (in thousands)............  $41,928  $35,073  $19,568    $6,451      $4,420
Ratio of expenses to
 average net assets........     1.89%    1.87%    1.89%     1.92%+      1.91%+
Ratio of net income (loss)
 to average net assets.....     0.73%    0.97%    1.07%     1.55%+     (0.08)%+
Portfolio turnover rate....    70.72%   93.67%  106.02%    56.10%++    70.72%+++
<CAPTION>
                                               CLASS D
                             ------------------------------------------------
                                       Year ended December 31,
                             ------------------------------------------------
                              1999     1998     1997      1996        1995
                             ------   ------   ------    ------      ------
<S>                          <C>      <C>      <C>      <C>         <C>
Per Share Data:*
Net asset value, beginning
 of year...................   $15.73   $15.89   $14.87    $14.16      $12.07

                               -----    -----    -----     -----       -----
Income from investment
 operations:
 Net investment income
  (loss)...................     0.11     0.16     0.17      0.24        0.24
 Net gains or losses on
  securities (both realized
  and unrealized) .........     0.38     2.32     3.18      1.80        3.00
 Net gains or losses on
  foreign currency
  transactions (both
  realized and
  unrealized)..............       --       --    (0.07)       --        0.01

                              ------   ------    -----     -----       -----
Total from investment
 operations................     0.49     2.48     3.28      2.04        3.25

                              ------   ------    -----     -----       -----
Less distributions:
 Dividends from net
  investment income........    (0.12)   (0.17)   (0.20)    (0.21)      (0.22)
 Distributions from
  capital gains............    (1.23)   (2.47)   (2.06)    (1.12)      (0.94)

                               -----    -----    -----     -----       -----
Total distributions........    (1.35)   (2.64)   (2.26)    (1.33)      (1.16)

                               -----    -----    -----     -----       -----
Net asset value, end of
 year......................   $14.87   $15.73   $15.89    $14.87      $14.16

                               =====    =====    =====     =====       =====
Total Return:                   2.97%   16.55%   22.66%    14.58%      27.17%
Ratios/Supplemental Data:
Net assets, end of year (in
 thousands)................  $72,950  $85,608  $80,896   $63,938     $46,564
Ratio of expenses to
 average net assets........     1.89%    1.87%    1.89%     1.91%       1.72%
Ratio of net income (loss)
 to average net assets.....     0.73%    0.97%    1.07%     1.61%       1.80%
Portfolio turnover rate....    70.72%   93.67%  106.02%    56.10%      46.08%
</TABLE>
- --------------
  * Per share amounts are calculated based on average shares outstanding.

 ** Commencement of offering of shares.
  + Annualized.
 ++ For the year ended December 31, 1996.

+++ For the year ended December 31, 1999.

                                       16
<PAGE>

How to Contact Us

<TABLE>
<S>                     <C>         <C>
The Fund                Write:      Corporate Communications/
                                    Investor Relations Department
                                    J. & W. Seligman & Co. Incorporated
                                    100 Park Avenue, New York, NY 10017
                        Phone:      Toll-Free (800) 221-7844 in the US or
                                    (212) 850-1864 outside the US
                        Website:    http://www.seligman.com
Your Regular
(Non-Retirement)
Account                 Write:      Shareholder Services Department
                                    Seligman Data Corp.
                                    100 Park Avenue, New York, NY 10017
                        Phone:      Toll-Free (800) 221-2450 in the US or
                                    (212) 682-7600 outside the US
                        Website:    http://www.seligman.com
Your Retirement
Account                 Write:      Retirement Plan Services
                                    Seligman Data Corp.
                                    100 Park Avenue, New York, NY 10017
                        Phone:      Toll-Free (800) 445-1777
</TABLE>

                24-hour automated telephone access is
                available by dialing (800) 622-4597 on a
                touchtone telephone. You will have instant
                access to price, yield, account balance, most
                recent transaction, and other information.

                                       17
<PAGE>

For More Information

The following information is available without charge upon request: Call toll-
free (800) 221-2450 in the US or (212) 682-7600 outside the US. You may also
call these numbers to request other information about the Fund or to make
shareholder inquiries.

Statement of Additional Information (SAI) contains additional information about
the Fund. It is on file with the Securities and Exchange Commission, or SEC, and
is incorporated by reference into (is legally part of) this prospectus.

Annual/Semi-Annual Reports contain additional information about the Fund's
investments. In the Fund's annual report, you will find a discussion of the
market conditions and investment strategies that significantly affected the
Fund's performance during its last fiscal year.

                             SELIGMAN ADVISORS, INC.
                                 an affiliate of

                                     J W S

                             J. & W. SELIGMAN & CO.

                                  INCORPORATED

                                ESTABLISHED 1864

                       100 Park Avenue, New York, NY 10017

Information about the Fund, including the SAI, can be viewed and copied at the
SEC's Public Reference Room in Washington, DC. For information about the
operation of the Public Reference Room, call (202) 942-8090. The SAI,
Annual/Semi-Annual reports and other information about the Fund are also
available on the EDGAR Database on the SEC's Internet site: http://www.sec.gov.

Copies of this information may be obtained, upon payment of a duplicating fee,
by electronic request at the following E-mail address: [email protected], or by
writing: Securities and Exchange Commission, Public Reference Section,
Washington, DC 20549-0102.

SEC FILE NUMBER:  811 - 234
<PAGE>

                        SELIGMAN COMMON STOCK FUND, INC.



                       Statement of Additional Information
                                   May 1, 2000


                                 100 Park Avenue
                            New York, New York 10017
                                 (212) 850-1864
                       Toll Free Telephone: (800) 221-2450
      For Retirement Plan Information - Toll-Free Telephone: (800) 445-1777



This Statement of Additional Information (SAI) expands upon and supplements the
information contained in the current Prospectus of Seligman Common Stock Fund,
Inc., dated May 1, 2000.  This SAI, although not in itself a prospectus, is
incorporated by reference into the Prospectus in its entirety.  It should be
read in conjunction with the Prospectus, which you may obtain by writing or
calling the Fund at the above address or telephone numbers.


The financial statements and notes included in the Fund's Annual Report, and the
Independent Auditors' Report thereon, are incorporated herein by reference.  The
Annual Report will be furnished to you without charge if you request a copy of
this SAI.



                               Table of Contents


          Fund History...........................................   2
          Description of the Fund and its Investments and Risks..   2
          Management of the Fund.................................   6
          Control Persons and Principal Holders of Securities....  11
          Investment Advisory and Other Services.................  12
          Brokerage Allocation and Other Practices...............  17
          Capital Stock and Other Securities.....................  18
          Purchase, Redemption, and Pricing of Shares............  18
          Taxation of the Fund...................................  23
          Underwriters...........................................  25
          Calculation of Performance Data........................  26
          Financial Statements...................................  29
          General Information....................................  29
          Appendix...............................................  30


EQCS1A
<PAGE>

                                  Fund History

The Fund was incorporated under the laws of the state of Maryland in 1930.

             Description of the Fund and its Investments and Risks

Classification

The Fund is a diversified open-end management investment company, or mutual
fund.

Investment Strategies and Risks

The following information regarding the Fund's investments and risks supplements
the information contained in the Fund's Prospectus.

Foreign Securities.  The Fund may invest in commercial paper and certificates of
deposit issued by foreign banks and may invest either directly or through
American Depositary Receipts (ADRs), European Depositary Receipts (EDRs), or
Global Depositary Receipts (GDRs) (collectively, Depositary Receipts) in other
securities of foreign issuers.  Foreign investments may be affected favorably or
unfavorably by changes in currency rates and exchange control regulations.
There may be less information available about a foreign company than about a US
company and foreign companies may not be subject to reporting standards and
requirements comparable to those applicable to US companies.  Foreign securities
may not be as liquid as US securities and there may be delays and risks
attendant in local settlement procedures.  Securities of foreign companies may
involve greater market risk than securities of US companies, and foreign
brokerage commissions and custody fees are generally higher than those in the
United States.  Investments in foreign securities may also be subject to local
economic or political risks, political instability, the possible nationalization
of issuers and the risk of expropriation or restrictions on the repatriation of
proceeds of sale.  In addition, foreign investments may be subject to
withholding and other taxes.

Depositary Receipts are instruments generally issued by domestic banks or trust
companies that represent the deposits of a security of a foreign issuer.  ADRs,
which are traded in dollars on US Exchanges or over-the-counter, are issued by
domestic banks and evidence ownership of securities issued by foreign
corporations.  EDRs are typically traded in Europe.  GDRs are typically traded
in both Europe and the United States.  Depositary Receipts may be issued under
sponsored or unsponsored programs.  In sponsored programs, the issuer has made
arrangements to have its securities traded in the form of a Depositary Receipt.
In unsponsored programs, the issuers may not be directly involved in the
creation of the program.  Although regulatory requirements with respect to
sponsored and unsponsored Depositary Receipt programs are generally similar, the
issuers of securities represented by unsponsored Depositary Receipts are not
obligated to disclose material information in the United States, and therefore,
the import of such information may not be reflected in the market value of such
receipts.  The Fund may invest up to 10% of its total assets in foreign
securities that it holds directly, but this 10% limit does not apply to foreign
securities held through Depositary Receipts which are traded in the United
States or to commercial paper and certificates of deposit issued by foreign
banks.

Investment income received by the Fund from sources within foreign countries may
be subject to foreign income taxes withheld at the source.  The United States
has entered into tax treaties with many foreign countries which entitle the Fund
to a reduced rate of such taxes or exemption from taxes on such income.  It is
impossible to determine the effective rate of foreign tax in advance since the
amounts of the Fund's assets to be invested within various countries is not
known.

Forward Foreign Currency Exchange Contracts.  The investment manager will
consider changes in exchange rates in making investment decisions.  As one way
of managing exchange rate risk, the Fund may enter into forward currency
exchange contracts.  A forward foreign currency exchange contract is an
agreement to purchase or sell a specific currency at a future date and at a
price set at the time the contract is entered into.  The Fund will generally
enter into these contracts to fix the US dollar value of a security that it has
agreed to buy or sell for the period between the date the trade was entered into
and the date the security is delivered and paid for.

The Fund may enter into a forward contract to sell or buy the amount of a
foreign currency it believes may experience a substantial movement against the
US dollar.  In this case the contract would approximate the value of

                                       2
<PAGE>

some or all of the Fund's portfolio securities denominated in such foreign
currency. Under normal circumstances, the investment manager will limit forward
currency contracts to not greater than 75% of the Fund's portfolio position in
any one country as of the date the contract is entered into. This limitation
will be measured at the point the hedging transaction is entered into by the
Fund. Under extraordinary circumstances, the investment manager may enter into
forward currency contracts in excess of 75% of the Fund's portfolio position in
any one country as of the date the contract is entered into. The precise
matching of the forward contract amounts and the value of securities involved
will not generally be possible since the future value of such securities in
foreign currencies will change as a consequence of market involvement in the
value of those securities between the date the forward contract is entered into
and the date it matures. The projection of short-term currency market movement
is extremely difficult, and the successful execution of a short-term hedging
strategy is highly uncertain. Under certain circumstances, the Fund may commit
up to the entire value of its assets which are denominated in foreign currencies
to the consummation of these contracts. The investment manager will consider the
effect a substantial commitment of its assets to forward contracts would have on
the investment program of the Fund and its ability to purchase additional
securities.

Except as set forth above and immediately below, the Fund will not enter into
such forward contracts or maintain a net exposure to such contracts where the
consummation of the contracts would oblige the Fund to deliver an amount of
foreign currency in excess of the value of the Fund's portfolio securities or
other assets denominated in that currency.  The Fund, in order to avoid excess
transactions and transaction costs, may nonetheless maintain a net exposure to
forward contracts in excess of the value of the Fund's portfolio securities or
other assets denominated in that currency provided the excess amount is
"covered" by cash or liquid, high-grade debt securities, denominated in any
currency, having a value at least equal at all times to the amount of such
excess.  Under normal circumstances, consideration of the prospect for currency
parities will be incorporated into the longer term investment decisions made
with regard to overall diversification strategies.  However, the investment
manager believes that it is important to have the flexibility to enter into such
forward contracts when it determines that the best interests of the Fund will be
served.

At the maturity of a forward contract, the Fund may either sell the portfolio
security and make delivery of the foreign currency, or it may retain the
security and terminate its contractual obligation to deliver the foreign
currency by purchasing an "offsetting" contract obligating it to purchase, on
the same maturity date, the same amount of the foreign currency.

As indicated above, it is impossible to forecast with absolute precision the
market value of portfolio securities at the expiration of the forward contract.
Accordingly, it may be necessary for the Fund to purchase additional foreign
currency on the spot market (and bear the expense of such purchase) if the
market value of the security is less than the amount of foreign currency the
Fund is obligated to deliver and if a decision is made to sell the security and
make delivery of the foreign currency.  Conversely, it may be necessary to sell
on the spot market some of the foreign currency received upon the sale of the
portfolio security if its market value exceeds the amount of foreign currency
the Fund is obligated to deliver.  However, the Fund may use liquid, high-grade
debt securities, denominated in any currency, to cover the amount by which the
value of a forward contract exceeds the value of the securities to which it
relates.

If the Fund retains the portfolio security and engages in an offsetting
transaction, the Fund will incur a gain or a loss (as described below) to the
extent that there has been movement in forward contract prices.  If the Fund
engages in an offsetting transaction, it may subsequently enter into a new
forward contract to sell the foreign currency.  Should forward prices decline
during the period between the Fund's entering into a forward contract for the
sale of a foreign currency and the date it enters into an offsetting contract
for the purchase of the foreign currency, the Fund will realize a gain to the
extent the price of the currency it has agreed to sell exceeds the price of the
currency it has agreed to purchase.  Should forward prices increase, the Fund
will suffer a loss to the extent the price of the currency it has agreed to
purchase exceeds the price of the currency it has agreed to sell.

The Fund's dealing in forward foreign currency exchange contracts will be
limited to the transactions described above.  Of course, the Fund is not
required to enter into forward contracts with regard to its foreign currency-
denominated securities and will not do so unless deemed appropriate by the
investment manager.

Although the Fund will seek to benefit by using forward contracts, anticipated
currency movements may not be accurately predicted and the Fund may therefore
incur a gain or loss on a forward contract.  A forward contract

                                       3
<PAGE>

may help reduce the Fund's losses on securities denominated in a hedged
currency, but it may also reduce the potential gain on the securities which
might result from an increase in the value of that currency.

Investors should be aware of the costs of currency conversion.  Although foreign
exchange dealers do not charge a fee for conversion, they do realize a profit or
"spread" based on the difference between the prices at which they are buying and
selling various currencies.  Thus, a dealer may offer to sell a foreign currency
to the Fund at one rate, while offering a lesser rate of exchange should the
Fund desire to resell that currency to the dealer.

Repurchase Agreements.  The Fund may enter into repurchase agreements with
commercial banks and broker/dealers as a short-term cash management tool.  A
repurchase agreement is an agreement under which the Fund acquires a security,
generally a US Government obligation, subject to resale at an agreed upon price
and date.  The resale price reflects an agreed upon interest rate effective for
the period of time the Fund holds the security and is unrelated to the interest
rate on the security.  The Fund's repurchase agreements will at all times be
fully collateralized.

Repurchase agreements could involve certain risks in the event of bankruptcy or
other default by the seller, including possible delays and expenses in
liquidating the securities underlying the agreement, a decline in value of the
underlying securities and a loss of interest.  Repurchase agreements are
typically entered into for periods of one week or less.  As a matter of
fundamental policy, the Fund will not enter into repurchase agreements of more
than one week's duration if more than 10% of its net assets would be so
invested.

Illiquid Securities.  The Fund may invest up to 15% of its net assets in
illiquid securities, including restricted securities (i.e., securities not
readily marketable without registration under the Securities Act of 1933 (1933
Act)) and other securities that are not readily marketable.  The Fund may
purchase restricted securities that can be offered and sold to "qualified
institutional buyers" under Rule 144A of the 1933 Act, and the Fund's Board of
Directors may determine, when appropriate, that specific Rule 144A securities
are liquid and not subject to the 15% limitation on illiquid securities.  Should
the Board of Directors make this determination, it will carefully monitor the
security (focusing on such factors, among others, as trading activity and
availability of information) to determine that the Rule 144A security continues
to be liquid.  It is not possible to predict with assurance exactly how the
market for Rule 144A securities will further evolve.  This investment practice
could have the effect of increasing the level of illiquidity in the Fund, if and
to the extent that qualified institutional buyers become for a time uninterested
in purchasing Rule 144A securities.

Borrowing.  The Fund may borrow money only from banks and only for temporary or
emergency purposes in an amount not to exceed 15% of the value of its total
assets.  The Fund may pledge its assets only to the extent necessary to effect
permitted borrowing on a secured basis.

Rights and Warrants.  The Fund may invest in common stock rights and warrants
believed by the investment manager to provide capital appreciation
opportunities.  Common stock rights and warrants received as part of a unit or
attached to securities purchased (i.e., not separately purchased) are not
included in the Fund's investment restrictions regarding such securities.

The Fund may not invest in rights and warrants if, at the time of acquisition,
the investment in rights and warrants would exceed 5% of the Fund's net assets,
valued at the lower of cost or market.  In addition, no more than 2% of net
assets may be invested in warrants not listed on the New York or American Stock
Exchanges.  For purposes of this restriction, rights and warrants acquired by
the Fund in units or attached to securities may be deemed to have been purchased
without cost.

Lending of Portfolio Securities.  The Fund may lend portfolio securities to
broker/dealers or other institutions, if the investment manager believes such
loans will be beneficial to the Fund.  The borrower must maintain with the Fund
cash or equivalent collateral equal to at least 100% of the market value of the
securities loaned.  During the time portfolio securities are on loan, the
borrower pays the Fund any dividends or interest paid on the securities.  The
Fund may invest the collateral and earn additional income or receive an agreed
upon amount of interest income from the borrower.  Loans made by the Fund will
generally be short-term.  Loans are subject to termination at the option of the
Fund or the borrower.  The Fund may pay reasonable administrative and custodial
fees in connection with a loan and may pay a negotiated portion of the interest
earned on the collateral to the borrower or placing broker.  The Fund does not
have the right to vote securities on loan, but would terminate the

                                       4
<PAGE>

loan and regain the right to vote if that were considered important with respect
to the investment. The Fund may lose money if a borrower defaults on its
obligation to return securities and the value of the collateral held by the Fund
is insufficient to replace the loaned securities. In addition, the Fund is
responsible for any loss that might result from its investment of the borrower's
collateral.

Except as otherwise specifically noted above, the Fund's investment strategies
are not fundamental and the Fund, with the approval of the Board of Directors,
may change such strategies without the vote of shareholders.

Fund Policies

The Fund is subject to fundamental policies that place restrictions on certain
types of investments.  These policies cannot be changed except by vote of a
majority of the Fund's outstanding voting securities.  Under these policies, the
Fund may not:

- -  Borrow money, except for temporary or emergency purposes in an amount not to
   exceed 15% of the value of its total assets;

- -  Mortgage or pledge any of its assets, except to the extent necessary to
   effect permitted borrowings on a secured basis and except to enter into
   escrow arrangements in connection with the sales of permitted call options.
   The Fund has no present intention of selling call options, and will not do so
   without the prior approval of the Fund's Board of Directors;

- -  Purchase securities (other than closing call options) except for investment,
   buy on "margin," or sell "short." The Fund has no present intention of
   investing in these types of securities, and will not do so without the prior
   approval of the Fund's Board of Directors;

- -  Invest more than 5% of the value of its total assets, at market value, in
   securities of any company which, with their predecessors, have been in
   operation less than three continuous years, provided, however, that
   securities guaranteed by a company that (including predecessors) has been in
   operation at least three continuous years shall be excluded from this
   calculation;

- -  Invest more than 5% of its total assets (taken at market) in securities of
   any one issuer, other than the US Government, its agencies or
   instrumentalities, buy more than 10% of the outstanding voting securities or
   more than 10% of all the securities of any issuer, or invest to control or
   manage any company;

- -  Invest more than 25% of total assets at market value in any one industry;

- -  Invest in securities issued by other investment companies, except in
   connection with a merger, consolidation, acquisition or reorganization or for
   the purpose of hedging the Fund's obligations under its deferred compensation
   plan for directors;

- -  Purchase or hold any real estate, except the Fund may invest in securities
   secured by real estate or interests therein or issued by persons (including
   real estate investment trusts) which deal in real estate or interests
   therein;

- -  Purchase or hold the securities of any issuer, if to its knowledge, directors
   or officers of the Fund individually owning beneficially more than 0.5% of
   the securities of that other company own in the aggregate more than 5% of
   such securities;

- -  Deal with its directors or officers, or firms they are associated with, in
   the purchase or sale of securities of other issuers, except as broker;

- -  Purchase or sell commodities and commodity contracts;


- -  Underwrite the securities of other issuers, except insofar as the Fund may be
   deemed an underwriter under the 1933 Act in disposing of a portfolio
   security;


                                       5
<PAGE>

- -  Make loans, except loans of portfolio securities and except to the extent the
   purchase of notes, bonds or other evidences of indebtedness, the entry into
   repurchase agreements or deposits with banks may be considered loans; or

- -  Write or purchase put, call, straddle or spread options except that the Fund
   may sell covered call options listed on a national securities exchange or
   quoted on NASDAQ and purchase closing call options so listed or quoted. The
   Fund has no present intention of entering into these types of transactions,
   and will not do so without the prior approval of the Fund's Board of
   Directors.

The Fund also may not change its investment objective without shareholder
approval.

Under the Investment Company Act of 1940, as amended (1940 Act), a "vote of a
majority of the outstanding voting securities" of the Fund means the affirmative
vote of the lesser of (l) more than 50% of the outstanding shares of the Fund;
or (2) 67% or more of the shares present at a shareholders' meeting if more than
50% of the outstanding shares are represented at the meeting in person or by
proxy.


The Fund also may not acquire any securities of a registered open-end investment
company or a registered unit investment trust in reliance on subparagraph (F) or
subparagraph (G) of Section 12(d)(1) of the 1940 Act.  This policy is not
fundamental.


Temporary Defensive Position

In an attempt to respond to adverse market, economic, political, or other
conditions, the Fund may invest up to 100% of its assets in cash or cash
equivalents, including, but not limited to, prime commercial paper, bank
certificates of deposit, bankers' acceptances, or repurchase agreements for such
securities, and securities of the US Government and its agencies and
instrumentalities, as well as cash and cash equivalents denominated in foreign
currencies.  The Fund's investments in foreign cash equivalents will be limited
to those that, in the opinion of the investment manager, equate generally to the
standards established for US cash equivalents.  Investments in bank obligations
will be limited at the time of investment to the obligations of the 100 largest
domestic banks in terms of assets which are subject to regulatory supervision by
the US Government or state governments, and the obligations of the 100 largest
foreign banks in terms of assets with branches or agencies in the United States.

Portfolio Turnover


The Fund's portfolio turnover rate is calculated by dividing the lesser of
purchases or sales of portfolio securities for the year by the monthly average
of the value of the portfolio securities owned during the year.  Securities
whose maturity or expiration date at the time of acquisition were one year or
less are excluded from the calculation.  The Fund's portfolio turnover rates for
the years ended December 31, 1999 and 1998, were 70.72% and 93.67%,
respectively.


                             Management of the Fund

Board of Directors

The Board of Directors provides broad supervision over the affairs of the Fund.

Management Information

Directors and officers of the Fund, together with information as to their
principal business occupations during the past five years, are shown below.
Each Director who is an "interested person" of the Fund, as defined in the 1940
Act, is indicated by an asterisk.  Unless otherwise indicated, their addresses
are 100 Park Avenue, New York, NY 10017.

                                       6
<PAGE>

<TABLE>
<CAPTION>
         Name,                                                                  Principal
       (Age) and              Position(s) Held                            Occupation(s) During
        Address                  With Fund                                    Past 5 Years
        -------                  ---------                                    ------------

<S>                      <C>                         <C>
  William C. Morris*     Director, Chairman of the   Chairman, J. & W. Seligman & Co. Incorporated, Chairman and
         (62)            Board, Chief Executive      Chief Executive Officer, the Seligman Group of investment
                         Officer and Chairman of     companies; Chairman, Seligman Advisors, Inc., Seligman
                         the Executive Committee     Services, Inc., and Carbo Ceramics Inc., ceramic proppants for
                                                     oil and gas industry; and Director, Seligman Data Corp.,
                                                     Kerr-McGee Corporation, diversified energy company.  Formerly,
                                                     Director, Daniel Industries Inc., manufacturer of oil and gas
                                                     metering equipment.

    Brian T. Zino*       Director, President and     Director and President, J. & W. Seligman & Co. Incorporated;
         (47)            Member of the Executive     President (with the exception of Seligman Quality Municipal
                         Committee                   Fund, Inc. and Seligman Select Municipal Fund, Inc.) and
                                                     Director or Trustee, the Seligman Group of investment
                                                     companies; Chairman, Seligman Data Corp.; Member of the Board
                                                     of Governors of the Investment Company Institute; and
                                                     Director, ICI Mutual Insurance Company, Seligman Advisors,
                                                     Inc., and Seligman Services, Inc.

 Richard R. Schmaltz*    Director and Member of      Director and Managing Director, Director of Investments, J. &
         (59)            the Executive Committee     W. Seligman & Co. Incorporated; Director or Trustee, the
                                                     Seligman Group of investment companies (except Seligman Cash
                                                     Management Fund, Inc.); and Trustee Emeritus of Colby College.
                                                     Formerly, Director, Seligman Henderson Co. and Director,
                                                     Investment Research at Neuberger & Berman from May 1993 to
                                                     September 1996.

    John R. Galvin                Director           Dean, Fletcher School of Law and Diplomacy at Tufts
         (70)                                        University; Director or Trustee, the Seligman Group of
   Tufts University                                  investment companies; Chairman Emeritus, American Council on
    Packard Avenue,                                  Germany; Governor of the Center for Creative Leadership;
  Medford, MA  02155                                 Director; Raytheon Co., electronics; National Defense
                                                     University; and the Institute for Defense Analyses.  Formerly,
                                                     Director, USLIFE Corporation, life insurance; Ambassador, U.S.
                                                     State Department for negotiations in Bosnia; Distinguished
                                                     Policy Analyst at Ohio State University and Olin Distinguished
                                                     Professor of National Security Studies at the United States
                                                     Military Academy.  From June 1987 to June 1992, he was the
                                                     Supreme Allied Commander, Europe and the Commander-in-Chief,
                                                     United States European Command.

   Alice S. Ilchman               Director           Retired President, Sarah Lawrence College; Director or
         (65)                                        Trustee, the Seligman Group of investment companies; Trustee,
  18 Highland Circle,                                the Committee for Economic Development; and Chairman, The
 Bronxville, NY  10708                               Rockefeller Foundation, charitable foundation.  Formerly,
                                                     Trustee, The Markle Foundation, philanthropic organization;
                                                     and Director, New York Telephone Company; and International
                                                     Research and Exchange Board, intellectual exchanges.
</TABLE>

                                       7
<PAGE>

<TABLE>
<CAPTION>
         Name,                                                                  Principal
       (Age) and              Position(s) Held                            Occupation(s) During
        Address                  With Fund                                    Past 5 Years
        -------                  ---------                                    ------------
<S>                      <C>                         <C>
  Frank A. McPherson              Director           Retired Chairman and Chief Executive Officer of Kerr-McGee
         (67)                                        Corporation; Director or Trustee, the Seligman Group of
    2601 Northwest                                   investment companies; Director, Kimberly-Clark Corporation,
 Expressway,                                         consumer products; Conoco Inc, oil exploration and production;
      Suite 805E                                     Bank of Oklahoma Holding Company; Baptist Medical Center;
  Oklahoma City, OK                                  Oklahoma Chapter of the Nature Conservancy; Oklahoma Medical
 73112                                               Research Foundation; and National Boys and Girls Clubs of
                                                     America; and Member of the Business Roundtable and National
                                                     Petroleum Council.  Formerly, Chairman, Oklahoma City Public
                                                     Schools Foundation; and Director, Federal Reserve System's
                                                     Kansas City Reserve Bank and the Oklahoma City Chamber of
                                                     Commerce.





     John E. Merow                Director           Retired Chairman and Senior Partner, Sullivan & Cromwell, law
         (70)                                        firm; Director or Trustee, the Seligman Group of investment
   125 Broad Street,                                 companies; Director, Commonwealth Industries, Inc.,
  New York, NY  10004                                manufacturers of aluminum sheet products; the Foreign Policy
                                                     Association; Municipal Art Society of New York; the U.S.
                                                     Council for International Business; and New York-Presbyterian
                                                     Hospital; Chairman, New York-Presbyterian Healthcare Network,
                                                     Inc.; Vice-Chairman, the U.S.-New Zealand Council; and Member
                                                     of the American Law Institute and Council on Foreign Relations.




    Betsy S. Michel               Director           Attorney; Director or Trustee, the Seligman Group of
         (57)                                        investment companies; Trustee, The Geraldine R. Dodge
     P.O. Box 719,                                   Foundation, charitable foundation.  Formerly, Chairman of the
 Gladstone, NJ  07934                                Board of Trustees of St. George's School (Newport, RI) and,
                                                     Director, the National Association of Independent Schools
                                                     (Washington, DC).




    James C. Pitney               Director           Retired Partner, Pitney, Hardin, Kipp & Szuch, law firm;
         (73)                                        Director or Trustee, the Seligman Group of investment
    Park Avenue at                                   companies.  Formerly, Director, Public Service Enterprise
    Morris County,                                   Group, public utility.
    P.O. Box 1945,
    Morristown, NJ
        07962


   James Q. Riordan               Director           Director or Trustee, the Seligman Group of investment
         (72)                                        companies; Director, The Houston Exploration Company, oil
   2893 S. E. Ocean                                  exploration; The Brooklyn Museum, KeySpan Energy Corporation;
 Boulevard,                                          and Public Broadcasting Service; and Trustee, the Committee
   Stuart, FL  34996                                 for Economic Development.  Formerly, Co-Chairman of the Policy
                                                     Council of the Tax Foundation; Director, Tesoro Petroleum
                                                     Companies, Inc. and Dow Jones & Company, Inc.; Director and
                                                     President, Bekaert Corporation; and Co-Chairman, Mobil
                                                     Corporation.



</TABLE>

                                       8
<PAGE>

<TABLE>
<CAPTION>
         Name,                                                                  Principal
       (Age) and              Position(s) Held                            Occupation(s) During
        Address                  With Fund                                    Past 5 Years
        -------                  ---------                                    ------------

<S>                      <C>                         <C>
   Robert L. Shafer               Director           Retired Vice President, Pfizer Inc., pharmaceuticals; Director
         (67)                                        or Trustee, the Seligman Group of investment companies.
 96 Evergreen Avenue,                                Formerly, Director, USLIFE Corporation, life insurance.
    Rye, NY  10580

   James N. Whitson               Director           Director and Consultant, Sammons Enterprises, Inc., a
         (65)                                        diversified holding company; Director or Trustee, the Seligman
6606 Forestshire Drive,                              Group of investment companies; Director, C-SPAN, cable
   Dallas, TX  75230                                 television, and CommScope, Inc., manufacturer of coaxial
                                                     cables.  Formerly, Executive Vice President, Chief Operating
                                                     Officer, Sammons Enterprises, Inc.

 Charles C. Smith, Jr.       Vice President and      Managing Director (formerly, Senior Vice President and Senior
         (43)                Portfolio Manager       Investment Officer), J. & W. Seligman & Co. Incorporated; Vice
                                                     President and Portfolio Manager, Seligman Income Fund, Inc.,
                                                     Seligman Portfolios, Inc. and Tri-Continental Corporation.


   Lawrence P. Vogel           Vice President        Senior Vice President, Finance, J. & W. Seligman & Co.
         (43)                                        Incorporated, Seligman Advisors, Inc., and Seligman Data
                                                     Corp.; Vice President, the Seligman Group of investment
                                                     companies, and Seligman Services, Inc.; and Vice President and
                                                     Treasurer, Seligman International, Inc.  Formerly, Treasurer,
                                                     Seligman Henderson Co.

    Frank J. Nasta               Secretary           General Counsel, Senior Vice President, Law and Regulation and
         (35)                                        Corporate Secretary, J. & W. Seligman & Co. Incorporated;
                                                     Secretary, the Seligman Group of investment companies,
                                                     Seligman Advisors, Inc., Seligman Services, Inc., Seligman
                                                     International, Inc. and Seligman Data Corp.  Formerly,
                                                     Secretary, Seligman Henderson Co.

    Thomas G. Rose               Treasurer           Treasurer, the Seligman Group of investment companies and
         (42)                                        Seligman Data Corp.

</TABLE>

The Executive Committee of the Board acts on behalf of the Board between
meetings to determine the value of securities and assets owned by the Fund for
which no market valuation is available, and to elect or appoint officers of the
Fund to serve until the next meeting of the Board.

Directors and officers of the Fund are also directors and officers of some or
all of the other investment companies in the Seligman Group.

                                       9
<PAGE>

Compensation

<TABLE>
<CAPTION>
                                                                 Pension or         Total Compensation
                                               Aggregate     Retirement Benefits      from Fund and
                 Name and                    Compensation    Accrued as Part of     Fund Complex Paid
            Position with Fund               from Fund (1)      Fund Expenses      to Directors (1)(2)
            ------------------               -------------      -------------      -------------------
<S>                                         <C>              <C>                  <C>
William C. Morris, Director and Chairman          N/A                N/A                   N/A
Brian T. Zino, Director and President             N/A                N/A                   N/A
Richard R. Schmaltz, Director                     N/A                N/A                   N/A
John R. Galvin, Director                       $1,709                N/A               $82,000
Alice S. Ilchman, Director                      1,709                N/A                80,000
Frank A. McPherson, Director                    1,709                N/A                78,000
John E. Merow, Director                         1,729                N/A                80,000
Betsy S. Michel, Director                       1,729                N/A                82,000
James C. Pitney, Director                       1,689                N/A                74,000
James Q. Riordan, Director                      1,709                N/A                80,000
Robert L. Shafer, Director                      1,709                N/A                80,000
James N. Whitson, Director                      1,709(3)             N/A                80,000(3)
</TABLE>

- ------------------------------
(1) For the Fund's year ended December 31, 1999.  Effective January 21, 2000,
    the per meeting fee for Directors was increased by $1,000, which is
    allocated among all funds in the Fund Complex.
(2) The Seligman Group of investment companies consists of twenty investment
    companies.
(3) Deferred.

The Fund has a compensation arrangement under which outside directors may elect
to defer receiving their fees.  The Fund has adopted a deferred compensation
plan under which a director who has elected deferral of his or her fees may
choose a rate of return equal to either (1) the interest rate on short-term
Treasury Bills, or (2) the rate of return on the shares of certain of the
investment companies advised by J. & W. Seligman & Co. Incorporated (Seligman),
as designated by the director.  The cost of such fees and earnings is included
in directors' fees and expenses, and the accumulated balance thereof is included
in other liabilities in the Fund's financial statements.  The total amount of
deferred compensation (including earnings) payable in respect of the Fund to Mr.
Whitson as of December 31, 1999 was $25,541.

Messrs. Merow and Pitney no longer defer current compensation; however, they
have accrued deferred compensation (including earnings) in the amounts of
$107,267 and $53,251, respectively, as of December 31, 1999.

The Fund may, but is not obligated to, purchase shares of the other funds in the
Seligman Group of investment companies to hedge its obligations in connection
with the Fund's deferred compensation plan.

Sales Charges

Class A shares of the Fund may be issued without a sales charge to present and
retired directors, trustees, officers, employees (and their family members) of
the Fund, the other investment companies in the Seligman Group, andSeligman and
its affiliates.  Family members are defined to include lineal descendants and
lineal ancestors, siblings (and their spouses and children) and any company or
organization controlled by any of the foregoing.  Such sales may also be made to
employee benefit plans and thrift plans for such persons and to any investment
advisory, custodial, trust or other fiduciary account managed or advised by
Seligman or any affiliate.  The sales may be made for investment purposes only,
and shares may be resold only to the Fund.


Class A shares may be sold at net asset value to these persons since such sales
require less sales effort and lower sales related expenses as compared with
sales to the general public.

                                       10
<PAGE>



Code of Ethics

Seligman, Seligman Advisors, Inc. (Seligman Advisors), their subsidiaries and
affiliates, and the Seligman Group of Investment Companies have adopted a Code
of Ethics that sets forth the circumstances under which officers, directors and
employees (collectively, Employees) are permitted to engage in personal
securities transactions.  The Code of Ethics proscribes certain practices with
regard to personal securities transactions and personal dealings, provides a
framework for the reporting and monitoring of personal securities transactions
by Seligman's Director of Compliance, and sets forth a procedure of identifying,
for disciplinary action, those individuals who violate the Code of Ethics.  The
Code of Ethics prohibits Employees (including all investment team members) from
purchasing or selling any security or an equivalent security that is being
purchased or sold by any client, or where the Employee intends, or knows of
another's intention, to purchase or sell a security on behalf of a client.  The
Code also prohibits all Employees from acquiring securities in a private
placement or in an initial or secondary public offering, unless an exemption has
been obtained from Seligman's Director of Compliance.

The Code of Ethics prohibits (1) each portfolio manager or member of an
investment team from purchasing or selling any security within seven calendar
days of the purchase or sale of the security by a client's account (including
investment company accounts) that the portfolio manager or investment team
manages; (2) each Employee from engaging in short-term trading (a purchase and
sale or vice-versa within 60 days); and (3) each member of an investment team
from engaging in short sales of a security if, at that time, any client managed
by that team has a long position in that security.  Any profit realized pursuant
to any of these prohibitions must be disgorged.

Employees are required, except under very limited circumstances, to engage in
personal securities transactions through Seligman's order desk.  The order desk
maintains a list of securities that may not be purchased due to a possible
conflict with clients.  All Employees are also required to disclose all
securities beneficially owned by them upon commencement of employment and at the
end of each calendar year.

A copy of the Code of Ethics is on public file with, and is available upon
request from, the Securities and Exchange Commission (SEC).  You can access it
through the SEC's Internet site, http://www.sec.gov.

              Control Persons and Principal Holders of Securities

Control Persons

As of April 7, 2000, there was no person or persons who controlled the Fund,
either through a significant ownership of shares or any other means of control.

Principal Holders

As of April 7, 2000, 19.99% of the Fund's Class B shares of capital stock then
outstanding and 15.34% of the Fund's Class D shares of capital stock then
outstanding were registered in the name of Merrill Lynch, Pierce, Fenner & Smith
Incorporated for the Sole Benefit of Its Customers, Attn. Fund Administration,
4800 Deer Lake Drive East, 3rd Floor, Jacksonville, FL 32246.  As of the same
date, there were no shareholders who owned 5% or more of Class A or Class C
shares of capital stock then outstanding.

Management Ownership

As of April 7, 2000, Directors and officers of the Fund as a group owned less
than 1% of the Fund's Class A shares of capital stock .  As of the same date, no
Directors or officers owned shares of the Fund's Class B shares, Class C shares
or Class D shares of capital stock then outstanding.


                                       11
<PAGE>



                     Investment Advisory and Other Services

Investment Manager

Seligman manages the Fund.  Seligman is a successor firm to an investment
banking business founded in 1864 which has thereafter provided investment
services to individuals, families, institutions, and corporations.  Mr. William
C. Morris owns a majority of the outstanding voting securities of Seligman.  See
Appendix for further history of Seligman.

All of the officers of the Fund listed above are officers or employees of
Seligman.  Their affiliations with the Fund and with Seligman are provided under
their principal business occupations.

The Fund pays Seligman a management fee for its services, calculated daily and
payable monthly.  The management fee is equal to .65% per annum of the Fund's
average daily net assets on the first $1 billion of net assets, .60% per annum
of the Fund's average daily net assets on the next $1 billion of net assets and
 .55% per annum of the Fund's average daily net assets in excess of $2 billion.
For the year ended December 31, 1999, the Fund paid Seligman $5,555,096, equal
to .65% per annum of its average daily net assets.  For the year ended December
31, 1998, the Fund paid Seligman $5,594,520, equal to .65% per annum of its
average daily net assets.  For the year ended December 31, 1997, the Fund paid
Seligman $5,192,858, equal to .65% per annum of its average daily net assets.
Seligman paid fees to Seligman Henderson Co., pursuant to a subadvisory
agreement, in the amount of $430,725  for the year ended December 31, 1997.  On
March 30, 1998, the subadvisory agreement was terminated.  For the period
January 1, 1998 through March 30, 1998, Seligman paid fees of $89,387 to
Seligman Henderson Co.


The Fund pays all of its expenses other than those assumed by Seligman,
including brokerage commissions, administration, shareholder services and
distribution fees, fees and expenses of independent attorneys and auditors,
taxes and governmental fees, including fees and expenses of qualifying the Fund
and its shares under Federal and State securities laws, cost of stock
certificates and expenses of repurchase or redemption of shares, expenses of
printing and distributing reports, notices and proxy materials to shareholders,
expenses of printing and filing reports and other documents with governmental
agencies, expenses of shareholders' meetings, expenses of corporate data
processing and related services, shareholder record keeping and shareholder
account services, fees and disbursements of transfer agents and custodians,
expenses of disbursing dividends and distributions, fees and expenses of
directors of the Fund not employed by or serving as a Director of Seligman or
its affiliates, insurance premiums and extraordinary expenses such as litigation
expenses.

The Management Agreement provides that Seligman will not be liable to the Fund
for any error of judgment or mistake of law, or for any loss arising out of any
investment, or for any act or omission in performing its duties under the
Agreement, except for willful misfeasance, bad faith, gross negligence, or
reckless disregard of its obligations and duties under the Agreement.

The Management Agreement was initially approved by the Board of Directors at a
Meeting held on September 30, 1988 and by the shareholders at a special meeting
held on December 16, 1988.  Amendments to the Management Agreement, effective
April 10, 1991, to increase the fee rate payable to Seligman by the Fund, were
approved by the Board of Directors on January 17, 1991 and by the shareholders
at a special meeting held on April 10, 1991.  The amendments to the Management
Agreement, effective January 1, 1996, to increase the fee rate payable to
Seligman by the Fund were approved by the Fund's Board of Directors on September
21, 1995 and by the shareholders at a special meeting on December 12, 1995.  The
Management Agreement will continue in effect until December 31 of each year if
(1) such continuance is approved in the manner required by the 1940 Act (i.e.,
by a vote of a majority of the Board of Directors or of the outstanding voting
securities of the Fund and by a vote of a majority of the Directors who are not
parties to the Management Agreement or interested persons of any such party) and
(2) Seligman shall not have notified the Fund at least 60 days prior to December
31 of any year that it does not desire such continuance.  The Management
Agreement may be terminated by the Fund, without penalty, on 60 days' written
notice to Seligman and will terminate automatically in the event of its
assignment. The Fund has agreed to change its name upon termination of the
Management Agreement if continued use of the name would cause confusion in the
context of Seligman's business.

                                       12
<PAGE>


Principal Underwriter

Seligman Advisors, an affiliate of Seligman, 100 Park Avenue, New York, New York
10017, acts as general distributor of the shares of the Fund and of each of the
other mutual funds in the Seligman Group.  Seligman Advisors is an "affiliated
person" (as defined in the 1940 Act) of Seligman, which is itself an affiliated
person of the Fund.  Those individuals identified above under "Management
Information" as directors or officers of both the Fund and Seligman Advisors are
affiliated persons of both entities.


Services Provided by the Investment Manager

Under the Management Agreement, dated December 29, 1988, as amended April 10,
1991 and January 1, 1996, subject to the control of the Board of Directors,
Seligman manages the investment of the assets of the Fund, including making
purchases and sales of portfolio securities consistent with the Fund's
investment objectives and policies, and administers its business and other
affairs.  Seligman provides the Fund with such office space, administrative and
other services and executive and other personnel as are necessary for Fund
operations.  Seligman pays all of the compensation of directors of the Fund who
are employees or consultants of Seligman and of the officers and employees of
the Fund.  Seligman also provides senior management for Seligman Data Corp., the
Fund's shareholder service agent.

Service Agreements

There are no other management-related service contracts under which services are
provided to the Fund.

Other Investment Advice

No person or persons, other than directors, officers, or employees of Seligman,
regularly advise the Fund with respect to its investments.

Dealer Reallowances

Dealers and financial advisors receive a percentage of the initial sales charge
on sales of Class A shares and Class C shares of the Fund, as set forth below:

Class A shares:
- ---------------
<TABLE>
<CAPTION>
                                                                                         Regular Dealer
                                      Sales Charge             Sales Charge               Reallowance
                                       as a % of               as a % of Net               as a % of
Amount of Purchase                  Offering Price(1)          Amount Invested            Offering Price
- ------------------                  -----------------          ---------------            --------------
<S>                             <C>                       <C>                      <C>
Less than $50,000                        4.75%                     4.99%                       4.25%
$50,000  -  $99,999                      4.00                      4.17                        3.50
$100,000  -  $249,999                    3.50                      3.63                        3.00
$250,000  -  $499,999                    2.50                      2.56                        2.25
$500,000  -  $999,999                    2.00                      2.04                        1.75
$1,000,000 and over                         0                         0                           0
</TABLE>

(1)  "Offering Price" is the amount that you actually pay for Fund shares; it
     includes the initial sales charge.

                                       13
<PAGE>



Class C shares:
- ---------------

<TABLE>
<CAPTION>
                                                                                         Regular Dealer
                                      Sales Charge             Sales Charge               Reallowance
                                       as a % of               as a % of Net               as a % of
Amount of Purchase                 Offering Price(1)          Amount Invested            Offering Price
- ------------------                 -----------------          ---------------            --------------
<S>                             <C>                       <C>                      <C>
Less than $100,000                      1.00%                      1.01%                       1.00%
$100,000  -  $249,999                   0.50                       0.50                        0.50
$250,000  -  $1,000,000                    0                          0                           0
</TABLE>


(1)  "Offering Price" is the amount that you actually pay for Fund shares; it
     includes the initial sales charge.

Seligman Services, Inc. (Seligman Services), an affiliate of Seligman, is a
limited purpose broker/dealer.  Seligman Services is eligible to receive
commissions from certain sales of Fund shares.  For the years ended December 31,
1999, 1998 and 1997, Seligman Services received commissions in the amounts of
$27,759, $25,939 and $22,385, respectively.


Rule 12b-1 Plan

The Fund has adopted an Administration, Shareholder Services and Distribution
Plan (12b-1 Plan) in accordance with Section 12(b) of the 1940 Act and Rule 12b-
1 thereunder.

Under the 12b-1 Plan, the Fund may pay to Seligman Advisors an administration,
shareholder services and distribution fee in respect of the Fund's Class A,
Class B, Class C, and Class D shares.  Payments under the 12b-1 Plan may
include, but are not limited to: (1) compensation to securities dealers and
other organizations (Service Organizations) for providing distribution
assistance with respect to assets invested in the Fund; (2) compensation to
Service Organizations for providing administration, accounting and other
shareholder services with respect to Fund shareholders; and (3) otherwise
promoting the sale of shares of the Fund, including paying for the preparation
of advertising and sales literature and the printing and distribution of such
promotional materials and prospectuses to prospective investors and defraying
Seligman Advisors' costs incurred in connection with its marketing efforts with
respect to shares of the Fund.  Seligman, in its sole discretion, may also make
similar payments to Seligman Advisors from its own resources, which may include
the management fee that Seligman receives from the Fund.  Payments made by the
Fund under the 12b-1 Plan are intended to be used to encourage sales of the
Fund, as well as to discourage redemptions.

Fees paid by the Fund under the 12b-1 Plan with respect to any class of shares
may not be used to pay expenses incurred solely in respect of any other class or
any other Seligman fund.  Expenses attributable to more than one class of the
Fund are allocated between the classes in accordance with a methodology approved
by the Fund's Board of Directors.  Expenses of distribution activities that
benefit both the Fund and other Seligman funds will be allocated among the
applicable funds based on relative gross sales during the quarter in which such
expenses are incurred, in accordance with a methodology approved by the Board.

Class A
- -------


Under the 12b-1 Plan, the Fund, with respect to Class A shares, pays quarterly
to Seligman Advisors a service fee at an annual rate of up to .25% of the
average daily net asset value of the Class A shares.  This fee is used by
Seligman Advisors exclusively to make payments to Service Organizations which
have entered into agreements with Seligman Advisors.  Such Service Organizations
receive from Seligman Advisors a continuing fee of up to .25% on an annual
basis, payable quarterly, of the average daily net assets of Class A shares
attributable to the particular Service Organization for providing personal
service and/or maintenance of shareholder accounts.  The fee payable to Service
Organizations from time to time shall, within such limits, be determined by the
Directors of the Fund.  The Fund is not obligated to pay Seligman Advisors for
any such costs it incurs in excess of the fee described above. No expense
incurred in one year by Seligman Advisors with respect to Class A shares of the
Fund may be paid from Class A 12b-1 fees received from the Fund in any other
year. If the Fund's 12b-1 Plan is terminated in respect of Class A shares, no
amounts (other than amounts accrued but not yet paid) would be owed by the Fund
to Seligman Advisors with respect to Class A shares. The total amount paid by
the Fund to Seligman

                                       14
<PAGE>


Advisors in respect of Class A shares for the year ended December 31, 1999 was
$1,780,806, equivalent to .24% per annum of the Class A shares' average daily
net assets.

Class B
- -------

Under the 12b-1 Plan, the Fund, with respect to Class B shares, pays monthly a
12b-1 fee at an annual rate of up to 1% of the average daily net asset value of
the Class B shares.  This fee is comprised of (1) a distribution fee equal to
 .75% per annum, which is paid directly to a third party, FEP Capital, L.P., to
compensate it for having funded, at the time of sale of Class B shares (i) a 4%
sales commission to Service Organizations and (ii) a payment of up to .25% of
sales to Seligman Advisors to help defray its costs of distributing Class B
shares; and (2) a service fee of up to .25% per annum which is paid to Seligman
Advisors.  The service fee is used by Seligman Advisors exclusively to make
payments to Service Organizations which have entered into agreements with
Seligman Advisors.  Such Service Organizations receive from Seligman Advisors a
continuing service fee of up to .25% on an annual basis, payable quarterly, of
the average daily net assets of Class B shares attributable to the particular
Service Organization for providing personal service and/or maintenance of
shareholder accounts.  The amounts expended by Seligman Advisors or FEP Capital,
L.P. in any one year upon the initial purchase of Class B shares of the Fund may
exceed the 12b-1 fees paid by the Fund in that year.  The Fund's 12b-1 Plan
permits expenses incurred in respect of Class B shares in one year to be paid
from Class B 12b-1 fees received from the Fund in any other year; however, in
any fiscal year the Fund is not obligated to pay any 12b-1 fees in excess of the
fees described above.  Seligman Advisors and FEP Capital, L.P. are not
reimbursed for expenses which exceed such fees.  If the Fund's 12b-1 Plan is
terminated in respect of Class B shares, no amounts (other than amounts accrued
but not yet paid) would be owed by that Fund to Seligman Advisors or FEP
Capital, L.P. with respect to Class B shares.  The total amount paid by the Fund
in respect of Class B shares for the year ended December 31, 1999 was $401,206,
equivalent to 1% per annum of the Class B shares' average daily net assets.

Class C
- -------

Under the 12b-1 Plan, the Fund, with respect to Class C shares, pays monthly to
Seligman Advisors a 12b-1 fee at an annual rate of up to 1% of the average daily
net asset value of the Class C shares.  This fee is used by Seligman Advisors as
follows: During the first year following the sale of Class C shares, a
distribution fee of .75% of the average daily net assets attributable to Class C
shares is used, along with any CDSC proceeds during the first eighteen months,
to (1) reimburse Seligman Advisors for its payment at the time of sale of Class
C shares of a 1.25% sales commission to Service Organizations, and (2) pay for
other distribution expenses, including paying for the preparation of advertising
and sales literature and the printing and distribution of such promotional
materials and prospectuses to prospective investors and other marketing costs of
Seligman Advisors.  In addition, during the first year following the sale of
Class C shares, a service fee of up to .25% of the average daily net assets
attributable to such Class C shares is used to reimburse Seligman Advisors for
its prepayment to Service Organizations at the time of sale of Class C shares of
a service fee of .25% of the net asset value of the Class C share sold (for
shareholder services to be provided to Class C shareholders over the course of
the one year immediately following the sale).  The payment of service fees to
Seligman Advisors is limited to amounts Seligman Advisors actually paid to
Service Organizations at the time of sale as service fees.  After the initial
one-year period following a sale of Class C shares, the entire 12b-1 fee
attributable to such Class C shares is paid to Service Organizations for
providing continuing shareholder services and distribution assistance in respect
of the Fund.  The total amount paid by the Fund to Seligman Advisors in respect
of Class C shares for the year ended December 31, 1999 was $14,076, equivalent
to 1% per annum of the Class C shares' average daily net assets.

The amounts expended by Seligman Advisors in any one year with respect to Class
C shares of the Fund may exceed the 12b-1 fees paid by the Fund in that year.
The Fund's 12b-1 Plan permits expenses incurred by Seligman Advisors in respect
of Class C shares in one year to be paid from Class C 12b-1 fees in any other
year; however, in any year the Fund is not obligated to pay any 12b-1 fees in
excess of the fees described above.

As of December 31, 1999, Seligman Advisors incurred $65,572 of unreimbursed
expenses in respect of the Fund's Class C shares.  This amount is equal to 1.48%
of the net assets of Class C shares at December 31, 1999.

If the Fund's 12b-1 Plan is terminated in respect of Class C shares of the Fund,
no amounts (other than amounts accrued but not yet paid) would be owed by the
Fund to Seligman Advisors with respect to Class C shares.

                                       15
<PAGE>

Class D
- -------

Under the 12b-1 Plan, the Fund, with respect to Class D shares, pays monthly to
Seligman Advisors a 12b-1 fee at an annual rate of up to 1% of the average daily
net asset value of the Class D shares.  This fee is used by Seligman Advisors as
follows: During the first year following the sale of Class D shares, a
distribution fee of .75% of the average daily net assets attributable to such
Class D shares is used, along with any CDSC proceeds, to (1) reimburse Seligman
Advisors for its payment at the time of sale of Class D shares of a .75% sales
commission to Service Organizations, and (2) pay for other distribution
expenses, including paying for the preparation of advertising and sales
literature and the printing and distribution of such promotional materials and
prospectuses to prospective investors and other marketing costs of Seligman
Advisors.  In addition, during the first year following the sale of Class D
shares, a service fee of up to .25% of the average daily net assets attributable
to such Class D shares is used to reimburse Seligman Advisors for its prepayment
to Service Organizations at the time of sale of Class D shares of a service fee
of .25% of the net asset value of the Class D shares sold (for shareholder
services to be provided to Class D shareholders over the course of the one year
immediately following the sale).  The payment of service fees to Seligman
Advisors is limited to amounts Seligman Advisors actually paid to Service
Organizations at the time of sale as service fees.  After the initial one-year
period following a sale of Class D shares, the entire 12b-1 fee attributable to
such Class D shares is paid to Service Organizations for providing continuing
shareholder services and distribution assistance in respect of the Fund.  The
total amount paid by the Fund to Seligman Advisors in respect of Class D shares
for the year ended December 31, 1999 was $816,148, equivalent to 1% per annum of
the Class D shares' average daily net assets.

The amounts expended by Seligman Advisors in any one year with respect to Class
D shares of the Fund may exceed the 12b-1 fees paid by the Fund in that year.
The Fund's 12b-1 Plan permits expenses incurred by Seligman Advisors in respect
of Class D shares in one year to be paid from Class D 12b-1 fees in any other
year; however, in any year the Fund is not obligated to pay any 12b-1 fees in
excess of the fees described above.

As of December 31, 1999, Seligman Advisors incurred $150,719 of unreimbursed
expenses in respect of the Fund's Class D shares.  This amount is equal to .21%
of the net assets of Class D shares at December 31, 1999.

If the Fund's 12b-1 Plan is terminated in respect of Class D shares of the Fund,
no amounts (other than amounts accrued but not yet paid) would be owed by the
Fund to Seligman Advisors with respect to Class D shares.

Payments made by the Fund under the 12b-1 Plan for the year ended December 31,
1999, were spent on the following activities in the following amounts:

<TABLE>
<CAPTION>
                                                        Class A        Class B*        Class C**       Class D
                                                        -------        --------        ---------       -------
<S>                                                  <C>            <C>              <C>               <C>
Compensation to underwriters                            $      -0-     $    -0-        $14,076         $ 77,015
Compensation to broker/dealers                          $1,780,806     $100,328        $   -0-         $739,133
Other*                                                  $      -0-     $300,878        $   -0-         $    -0-
</TABLE>

*    Payment is made to FEP Capital, L.P. to compensate it for having funded at
     the time of sale, payments to broker/dealers and underwriters.

**   From May 27, 1999 (inception) to December 31, 1999.

The 12b-1 Plan was approved on July 16, 1992 by the Board of Directors,
including a majority of the Directors who are not "interested persons" (as
defined in the 1940 Act) of the Fund and who have no direct or indirect
financial interest in the operation of the 12b-1 Plan or in any agreement
related to the 12b-1 Plan (Qualified Directors) and was approved by shareholders
of the Fund at a Special Meeting of the Shareholders held on November 23, 1992.
The 12b-1 Plan became effective in respect of the Class A shares on January 1,
1993. The 12b-1 Plan was approved in respect of the Class B shares on March 21,
1996 by the Board of Directors of the Fund, including a majority of the
Qualified Directors, and became effective in respect of the Class B shares on



April 22, 1996. The 12b-1 Plan was approved in respect of the Class C shares on
May 20, 1999 by the Directors, including a majority of the Qualified Directors,
and became effective in respect of the Class C shares on June 1, 1999. The 12b-
1 Plan was approved in respect of the Class D shares on March 18, 1993 by the
Directors, including a majority of the Qualified Directors, and became effective
in respect of the Class D shares on May 1, 1993. The 12b-1 Plan will continue in
effect until December 31 of each year so long as such continuance is approved
annually by a majority vote of both the Directors of the Fund and the Qualified
Directors, cast in person at a meeting called for the purpose of voting on such
approval. The 12b-1 Plan may not be amended to increase materially the amounts
payable to Service Organizations with respect to a class without

                                       16
<PAGE>


the approval of a majority of the outstanding voting securities of the class. If
the amount payable in respect of Class A shares under the 12b-1 Plan is proposed
to be increased materially, the Fund will either (1) permit holders of Class B
shares to vote as a separate class on the proposed increase or (2) establish a
new class of shares subject to the same payment under the 12b-1 Plan as existing
Class A shares, in which case the Class B shares will thereafter convert into
the new class instead of into Class A shares. No material amendment to the 12b-1
Plan may be made except by vote of a majority of both the Directors and the
Qualified Directors.

The 12b-1 Plan requires that the Treasurer of the Fund shall provide to the
Directors, and the Directors shall review, at least quarterly, a written report
of the amounts expended (and purposes therefor) under the 12b-1 Plan.  Rule 12b-
1 also requires that the selection and nomination of Directors who are not
"interested persons" of the Fund be made by such disinterested Directors.  The
12b-1 Plan is reviewed by the Directors annually.

Seligman Services acts as a broker/dealer of record for shareholder accounts
that do not have a designated financial advisor and receives compensation
pursuant to the Fund's 12b-1 Plan for providing personal services and account
maintenance to such accounts and other distribution services.  For the years
ended December 31, 1999, 1998 and 1997, Seligman Services received distribution
and service fees pursuant to the Fund's 12b-1 Plan of $397,031, $459,344 and
$468,360, respectively.

                    Brokerage Allocation and Other Practices

Brokerage Transactions

Seligman will seek the most favorable price and execution in the purchase and
sale of portfolio securities of the Fund.  When two or more of the investment
companies in the Seligman Group or other investment advisory clients of Seligman
desire to buy or sell the same security at the same time, the securities
purchased or sold are allocated by Seligman in a manner believed to be equitable
to each.  There may be possible advantages or disadvantages of such transactions
with respect to price or the size of positions readily obtainable or saleable.

In over-the-counter markets, the Fund deals with responsible primary market
makers unless a more favorable execution or price is believed to be obtainable.
The Fund may buy securities from or sell securities to dealers acting as
principal, except dealers with which its directors and/or officers are
affiliated.

For the years ended December 31, 1999, 1998 and 1997, the Fund paid total
brokerage commissions to others for execution, research and statistical services
in the amounts of $1,339,635, $2,078,069 and $2,439,633, respectively.

Commissions

For the years ended December 31, 1999, 1998 and 1997, the Fund did not execute
any portfolio transactions with, and therefore did not pay any commissions to,
any broker affiliated with either the Fund, Seligman, or Seligman Advisors.

Brokerage Selection


Consistent with seeking the most favorable price and execution when buying or
selling portfolio securities, Seligman may give consideration to the research,
statistical, and other services furnished by brokers or dealers to Seligman for
its use, as well as the general attitude toward and support of investment
companies demonstrated by such brokers or dealers.  Such services include
supplemental investment research, analysis, and reports concerning issuers,
industries, and securities deemed by Seligman to be beneficial to the Fund.  In
addition, Seligman is authorized to place orders with brokers who provide
supplemental investment and market research and security and economic analysis
although the use of such brokers may result in a higher brokerage charge to the
Fund than the use of brokers selected solely on the basis of seeking the most
favorable price and execution and although such research and analysis may be
useful to Seligman in connection with its services to clients other than the
Fund.

                                       17
<PAGE>

Directed Brokerage


During the year ended December 31, 1999, neither the Fund nor Seligman, through
an agreement or understanding with a broker, or otherwise through an internal
allocation procedure, directed any of the Fund's brokerage transactions to a
broker because of research services provided.


Regular Broker-Dealers


During the year ended December 31, 1999, the Fund did not acquire securities of
its regular brokers or dealers (as defined in Rule 10b-1 under the 1940 Act) or
of their parents.


                       Capital Stock and Other Securities

Capital Stock

The Fund is authorized to issue 500,000,000 shares of capital stock, each with a
par value of $0.50, divided into four classes, designated Class A common stock,
Class B common stock, Class C common stock, and Class D common stock.  Each
share of the Fund's Class A, Class B, Class C, and Class D common stock is equal
as to earnings, assets, and voting privileges, except that each class bears its
own separate distribution and, potentially, certain other class expenses and has
exclusive voting rights with respect to any matter to which a separate vote of
any class is required by the 1940 Act or Maryland law.  The Fund has adopted a
multiclass plan pursuant to Rule 18f-3 under the 1940 Act permitting the
issuance and sale of multiple classes of common stock.  In accordance with the
Articles of Incorporation, the Board of Directors may authorize the creation of
additional classes of common stock with such characteristics as are permitted by
the multiclass plan and Rule 18f-3.  The 1940 Act requires that where more than
one class exists, each class must be preferred over all other classes in respect
of assets specifically allocated to such class.  All shares have noncumulative
voting rights for the election of directors.  Each outstanding share is fully
paid and non-assessable, and each is freely transferable. There are no
liquidation, conversion, or preemptive rights.

Other Securities

The Fund has no authorized securities other than common stock.

                  Purchase, Redemption, and Pricing of Shares

Purchase of Shares

Class A
- -------

Class A shares may be purchased at a price equal to the next determined net
asset value per share, plus an initial sales charge.

Purchases of Class A shares by a "single person" (as defined below under
"Persons Entitled to Reductions") may be eligible for the following reductions
in initial sales charges:

Volume Discounts are provided if the total amount being invested in Class A
shares of the Fund alone, or in any combination of shares of the other mutual
funds in the Seligman Group which are sold with an initial sales charge, reaches
levels indicated in the sales charge schedule set forth in the Prospectus.

The Right of Accumulation allows an investor to combine the amount being
invested in Class A shares of the Fund and shares of the other Seligman mutual
funds sold with an initial sales charge with the total net asset value of shares
of those mutual funds already owned that were sold with an initial sales charge
and the total net asset value of shares of Seligman Cash Management Fund which
were acquired through an exchange of shares of another Seligman mutual fund on
which there was an initial sales charge at the time of purchase to determine
reduced sales charges in accordance with the schedule in the prospectus.  The
value of the shares owned, including the value of shares of Seligman Cash
Management Fund acquired in an exchange of shares of another

                                       18
<PAGE>

Seligman mutual fund on which there was an initial sales charge at the time of
purchase will be taken into account in orders placed through a dealer, however,
only if Seligman Advisors is notified by an investor or a dealer of the amount
owned by the investor at the time the purchase is made and is furnished
sufficient information to permit confirmation.

A Letter of Intent allows an investor to purchase Class A shares over a 13-month
period at reduced initial sales charges in accordance with the schedule in the
Prospectus, based on the total amount of Class A shares of the Fund that the
letter states the investor intends to purchase plus the total net asset value of
shares that were sold with an initial sales charge of the other Seligman mutual
funds already owned and the total net asset value of shares of Seligman Cash
Management Fund which were acquired through an exchange of shares of another
Seligman mutual fund on which there was an initial sales charge at the time of
purchase.  Reduced sales charges also may apply to purchases made within a 13-
month period starting up to 90 days before the date of execution of a letter of
intent.

Persons Entitled To Reductions.  Reductions in initial sales charges apply to
purchases of Class A shares by a "single person," including an individual;
members of a family unit comprising husband, wife and minor children; or a
trustee or other fiduciary purchasing for a single fiduciary account.  Employee
benefit plans qualified under Section 401 of the Internal Revenue Code of 1986,
as amended, organizations tax exempt under Section 501(c)(3) or (13) of the
Internal Revenue Code, and non-qualified employee benefit plans that satisfy
uniform criteria are considered "single persons" for this purpose.  The uniform
criteria are as follows:

  1.  Employees must authorize the employer, if requested by the Fund, to
receive in bulk and to distribute to each participant on a timely basis the Fund
prospectus, reports, and other shareholder communications.

  2.  Employees participating in a plan will be expected to make regular
periodic investments (at least annually).  A participant who fails to make such
investments may be dropped from the plan by the employer or the Fund 12 months
and 30 days after the last regular investment in his account.  In such event,
the dropped participant would lose the discount on share purchases to which the
plan might then be entitled.

  3.  The employer must solicit its employees for participation in such an
employee benefit plan or authorize and assist an investment dealer in making
enrollment solicitations.

Eligible Employee Benefit Plans.    The table of sales charges in the Prospectus
applies to sales to "eligible employee benefit plans," except that the Fund may
sell shares at net asset value to  "eligible employee benefit plans" which have
at least (1) $500,000 invested in the Seligman Group of mutual funds or (2) 50
eligible employees to whom such plan is made available.  Such sales must be made
in connection with a payroll deduction system of plan funding or other systems
acceptable to Seligman Data Corp., the Fund's shareholder service agent.
"Eligible employee benefit plan" means any plan or arrangement, whether or not
tax qualified, which provides for the purchase of Fund shares.  Sales of shares
to such plans must be made in connection with a payroll deduction system of plan
funding or other system acceptable to Seligman Data Corp.  Section 403(b) plans
sponsored by public educational institutions are not eligible for net asset
value purchases based on the aggregate investment made by the plan or number of
eligible employees.

Such sales are believed to require limited sales effort and sales-related
expenses and therefore are made at net asset value.  Contributions or account
information for plan participation also should be transmitted to Seligman Data
Corp. by methods which it accepts.  Additional information about "eligible
employee benefit plans" is available from financial advisors or Seligman
Advisors.

Further Types of Reductions.  Class A shares may also be issued without an
initial sales charge in the following instances:

(1)  to any registered unit investment trust which is the issuer of periodic
     payment plan certificates, the net proceeds of which are invested in Fund
     shares;

(2)  to separate accounts established and maintained by an insurance company
     which are exempt from registration under Section 3(c)(11) of the 1940 Act;

                                       19
<PAGE>

(3)  to registered representatives and employees (and their spouses and minor
     children) of any dealer that has a sales agreement with Seligman Advisors;

(4)  to financial institution trust departments;

(5)  to registered investment advisers exercising discretionary investment
     authority with respect to the purchase of Fund shares;

(6)  to accounts of financial institutions or broker/dealers that charge account
     management fees, provided Seligman or one of its affiliates has entered
     into an agreement with respect to such accounts;

(7)  pursuant to sponsored arrangements with organizations which make
     recommendations to, or permit group solicitations of, its employees,
     members or participants in connection with the purchase of shares of the
     Fund;

(8)  to other investment companies in the Seligman Group in connection with a
     deferred fee arrangement for outside Directors;

(10) to those partners and employees of outside counsel to the Fund or its
     directors or trustees who regularly provide advice and services to the
     Fund, to other funds managed by Seligman, or to their directors or
     trustees; and

(11) in connection with sales pursuant to a 401(k) alliance program which has an
     agreement with
     Seligman Advisors.

CDSC Applicable to Class A Shares.  Class A shares purchased without an initial
sales charge due to a purchase of $1,000,000 or more either alone or through a
Volume Discount, Right of Accumulation, or Letter of Intent are subject to a
CDSC of 1% on redemptions of such shares within eighteen months of purchase.
Employee benefit plans eligible for net asset value sales may be subject to a
CDSC of 1% for terminations at the plan level only, on redemptions of shares
purchased within eighteen months prior to plan termination.  The 1% CDSC will be
waived on shares that were purchased through Morgan Stanley Dean Witter & Co. by
certain Chilean institutional investors (i.e., pension plans, insurance
companies, and mutual funds).  Upon redemption of such shares within an
eighteen-month period, Morgan Stanley Dean Witter will reimburse Seligman
Advisors a pro rata portion of the fee it received from Seligman Advisors at the
time of sale of such shares.

See "CDSC Waivers" below for other waivers which may be applicable to Class A
shares.

Class B
- -------

Class B shares may be purchased at a price equal to the next determined net
asset value, without an initial sales charge.  However, Class B shares are
subject to a CDSC if the shares are redeemed within six years of purchase at
rates set forth in the table below, charged as a percentage of the current net
asset value or the original purchase price, whichever is less.

Years Since Purchase                     CDSC
- --------------------                     ----
Less than 1 year                          5%
1 year or more but less than 2 years      4%
2 years or more but less than 3 years     3%
3 years or more but less than 4 years     3%
4 years or more but less than 5 years     2%
5 years or more but less than 6 years     1%
6 years or more                           0%

Approximately eight years after purchase, Class B shares will convert
automatically to Class A shares. Shares purchased through reinvestment of
dividends and distributions on Class B shares also will convert automatically to
Class A shares along with the underlying shares on which they were earned.

                                       20
<PAGE>

Conversion occurs at the end of the month which precedes the eighth anniversary
of the purchase date.  If Class B shares of the Fund are exchanged for Class B
shares of another Seligman Mutual Fund, the conversion period applicable to the
Class B shares acquired in the exchange will apply, and the holding period of
the shares exchanged will be tacked onto the holding period of the shares
acquired.  Class B shareholders of the Fund exercising the exchange privilege
will continue to be subject to the Fund's CDSC schedule if such schedule is
higher or longer than the CDSC schedule relating to the new Class B shares.  In
addition, Class B shares of the Fund acquired by exchange will be subject to the
Fund's CDSC schedule if such schedule is higher or longer than the CDSC schedule
relating to the Class B shares of the Seligman mutual fund from which the
exchange has been made.

Class C
- -------

Class C shares may be purchased at a price equal to the next determined net
asset value, plus an initial sales charge.  Purchases of Class C shares by a
"single person" may be eligible for the reductions in initial sales charges
described above for Class A shares.  Class C shares are subject to a CDSC of 1%
if the shares are redeemed within eighteen months of purchase, charges as a
percentage of the current net asset value or the original purchase price,
whichever is less.

Class D
- -------

Class D shares may be purchased at a price equal to the next determined net
asset value, without an initial sales charge.  However, Class D shares are
subject to a CDSC of 1% if the shares are redeemed within one year of purchase,
charged as a percentage of the current net asset value or the original purchase
price, whichever is less.  Unlike Class B shares, Class D shares do not
automatically convert to Class A shares after eight years.

Systematic Withdrawals.  Class B, Class C and Class D shareholders who reinvest
both their dividends and capital gain distributions to purchase additional
shares of the Fund may use the Systematic Withdrawal Plan to withdraw up to 12%,
10%, and 10%, respectively, of the value of their accounts per year without the
imposition of a CDSC.  Account value is determined as of the date the systematic
withdrawals begin.

CDSC Waivers.  The CDSC on Class B, Class C and Class D shares (and certain
Class A shares, as discussed above) will be waived or reduced in the following
instances:

(1)  on redemptions following the death or disability (as defined in Section
     72(m)(7) of the Internal Revenue Code) of a shareholder or beneficial
     owner;

(2)  in connection with (1) distributions from retirement plans qualified under
     Section 401(a) of the Internal Revenue Code when such redemptions are
     necessary to make distributions to plan participants (such payments
     include, but are not limited to, death, disability, retirement, or
     separation of service), (2) distributions from a custodial account under
     Section 403(b)(7) of the Internal Revenue Code or an IRA due to death,
     disability, minimum distribution requirements after attainment of age 70
     1/2 or, for accounts established prior to January 1, 1998, attainment of
     age 59 1/2, and (3) a tax-free return of an excess contribution to an IRA;

(3)  in whole or in part, in connection with shares sold to current and retired
     Directors of the Fund;

(4)  in whole or in part, in connection with shares sold to any state, county,
     or city or any instrumentality, department, authority, or agency thereof,
     which is prohibited by applicable investment laws from paying a sales load
     or commission in connection with the purchase of any registered investment
     management company;

(5)  in whole or in part, in connection with systematic withdrawals;

(6)  in connection with participation in the Merrill Lynch Small Market 401(k)
     Program.

If, with respect to a redemption of any Class A, Class B, Class C or Class D
shares sold by a dealer, the CDSC is waived because the redemption qualifies for
a waiver as set forth above, the dealer shall remit to Seligman Advisors
promptly upon notice, an amount equal to the payment or a portion of the payment
made by Seligman Advisors at the time of sale of such shares.

                                       21
<PAGE>

Payment in Securities.  In addition to cash, the Fund may accept securities in
payment for Fund shares sold at the applicable public offering price (net asset
value and, if applicable, any sales charge), although the Fund does not
presently intend to accept securities in payment for Fund shares.  Generally,
the Fund will only consider accepting securities (l) to increase its holdings in
a portfolio security, or (2) if Seligman determines that the offered securities
are a suitable investment for the Fund and in a sufficient amount for efficient
management.  Although no minimum has been established, it is expected that the
Fund would not accept securities with a value of less than $100,000 per issue in
payment for shares.  The Fund may reject in whole or in part offers to pay for
Fund shares with securities, may require partial payment in cash for applicable
sales charges, and may discontinue accepting securities as payment for Fund
shares at any time without notice.  The Fund will not accept restricted
securities in payment for shares.  The Fund will value accepted securities in
the manner provided for valuing portfolio securities of the Fund.

Fund Reorganizations

Class A and Class C shares may be issued without an initial sales charge in
connection with the acquisition of cash and securities owned by other investment
companies.  Any CDSC will be waived in connection with the redemption of shares
of the Fund if the Fund is combined with another Seligman mutual fund, or in
connection with a similar reorganization transaction.

Offering Price

When you buy or sell Fund shares, you do so at the Class's net asset value (NAV)
next calculated after Seligman Advisors accepts your request.  Any applicable
sales charge will be added to the purchase price for Class A shares and Class C
shares.

NAV per share of each class of the Fund is determined as of the close of regular
trading on the New York Stock Exchange (normally, 4:00 p.m. Eastern time), on
each day that the NYSE is open for business.  The NYSE is currently closed on
New Year's Day, Martin Luther King, Jr. Day, Presidents' Day, Good Friday,
Memorial Day, Independence Day, Labor Day, Thanksgiving Day, and Christmas Day.
The Fund will also determine NAV for each class on each day in which there is a
sufficient degree of trading in the Fund's portfolio securities that the NAV of
Fund shares might be materially affected.  NAV per share for a class is computed
by dividing such class's share of the value of the net assets of the Fund (i.e.,
the value of its assets less liabilities) by the total number of outstanding
shares of such class.  All expenses of the Fund, including the management fee,
are accrued daily and taken into account for the purpose of determining NAV.
The NAV of Class B, Class C and Class D shares will generally be lower than the
NAV of Class A shares as a result of the higher 12b-1 fees with respect to such
shares.

Portfolio securities are valued at the last sales price on the securities
exchange or securities market on which such securities primarily are traded.
Securities not listed on an exchange or securities market, or securities in
which there were no transactions, are valued at the average of the most recent
bid and asked price, except in the case of open short positions where the asked
price is available.  Securities traded on a foreign exchange or over-the-counter
market are valued at the last sales price on the primary exchange or market on
which they are traded.  United Kingdom securities and securities for which there
are no recent sales transactions are valued based on quotations provided by
primary market makers in such securities.  Any securities or other assets for
which recent market quotations are not readily available are valued at fair
value as determined in accordance with procedures approved by the Board of
Directors.  Short-term obligations with less than 60 days remaining to maturity
are generally valued at amortized cost.  Short-term obligations with more than
60 days remaining to maturity will be valued at current market value until the
sixtieth day prior to maturity, and will then be valued on an amortized cost
basis based on the value on such date unless the Board determines that this
amortized cost value does not represent fair market value.  Expenses and fees,
including the investment management fee, are accrued daily and taken into
account for the purpose of determining the net asset value of Fund shares.

Generally, trading in foreign securities, as well as US Government securities,
money market instruments and repurchase agreements, is substantially completed
each day at various times prior to the close of the NYSE.  The values of such
securities used in computing the net asset value of the shares of the Fund are
determined as of such times.  Foreign currency exchange rates are also generally
determined prior to the close of the NYSE.

                                       22
<PAGE>

For purposes of determining the net asset value per share of the Fund, all
assets and liabilities initially expressed in foreign currencies will be
converted into US dollars at the mean between the bid and offer prices of such
currencies against US dollars quoted by a major bank that is a regular
participant in the foreign exchange market or on the basis of a pricing service
that takes into account the quotes provided by a number of such major banks.

Specimen Price Make-Up


Under the current distribution arrangements between the Fund and Seligman
Advisors, Class A shares and Class C shares are sold with a maximum initial
sales charge of 4.75% and 1.00%(1), respectively, and Class B and Class D shares
are sold at NAV(2).  Using each Class's NAV at December 31, 1999, the maximum
offering price of the Fund's shares is as follows:



Class A
- -------

  Net asset value per share..........................              $14.93
                                                                   ------

  Maximum sales charge (4.75% of offering price).....                 .74
                                                                    -----

  Offering price to public...........................              $15.67
                                                                   =-----

Class B
- -------

  Net asset value and offering price per share(2)....              $14.85
                                                                   =-----

Class C
- -------

  Net asset value per share..........................              $14.87
- -------------------------------------------------------------------------

  Maximum sales charge (1.00% of offering price(1))..                 .15
- -------------------------------------------------------------------------

  Offering price to public...........................              $15.02
- -------------------------------------------------------------------------

Class D
- -------

  Net asset value and offering price per share(2)....              $14.87
                                                                   =-----
- --------------


(1)  In addition to the front-end sales charge of 1.00%, Class C shares is
     subject to a 1% CDSC if you redeem your shares within 18 months of
     purchase.

(2)  Class B shares are subject to a CDSC declining from 5% in the first year
     after purchase to 0% after six years. Class D shares are also subject to a
     1% CDSC if you redeem your shares within one year of purchase.

Redemption in Kind

The procedures for selling Fund shares under ordinary circumstances are set
forth in the Prospectus.  In unusual circumstances, payment may be postponed, or
the right of redemption postponed for more than seven days, if the orderly
liquidation of portfolio securities is prevented by the closing of, or
restricted trading on, the NYSE during periods of emergency, or such other
periods as ordered by the SEC.  Under these circumstances, redemption proceeds
may be made in securities.  If payment is made in securities, a shareholder may
incur brokerage expenses in converting these securities to cash.


                              Taxation of the Fund

The Fund is qualified and intends to continue to qualify as a regulated
investment company under Subchapter M of the Internal Revenue Code.  For each
year so qualified, the Fund will not be subject to federal income taxes on its
net investment income and capital gains, if any, realized during any taxable
year, which it distributes to its shareholders, provided that at least 90% of
its net investment income and net short-term capital gains are distributed to
shareholders each year.

Dividends from net investment income and distributions from net short-term
capital gains are taxable as ordinary income to shareholders, whether received
in cash or reinvested in additional shares.  To the extent designated as derived
from the Fund's dividend income that would be eligible for the dividends
received deduction if the Fund

                                       23
<PAGE>

were not a regulated investment company, they are eligible, subject to certain
restrictions, for the 70% dividends received deduction for corporations.

Distributions of net capital gains (i.e., the excess of net long-term capital
gains over any net short-term losses) are taxable as long-term capital gain,
whether received in cash or invested in additional shares, regardless of how
long the shares have been held by a shareholder.  Such distributions are not
eligible for the dividends received deduction allowed to corporate shareholders.
Shareholders receiving distributions in the form of additional shares issued by
the Fund will be treated for federal income tax purposes as having received a
distribution in an amount equal to the fair market value on the date of
distribution of the shares received.  Individual shareholders generally will be
subject to federal tax on distributions of net capital gains at a maximum rate
of 20% if designated as derived from the Fund's capital gains from property held
for more than one year.

Any gain or loss realized upon a sale or redemption of shares in the Fund by a
shareholder who is not a dealer in securities will generally be treated as a
long-term capital gain or loss if the shares have been held for more than one
year and otherwise as a short-term capital gain or loss.  Individual
shareholders will be subject to federal income tax on net capital gains at a
maximum rate of 20% in respect of shares held for more than one year.  Net
capital gain of a corporate shareholder is taxed at the same rate as ordinary
income.  However, if shares on which a long-term capital gain distribution has
been received are subsequently sold or redeemed and such shares have been held
for six months or less, any loss realized will be treated as long-term capital
loss to the extent that it offsets the long-term capital gain distribution.  In
addition, no loss will be allowed on the sale or other disposition of shares of
the Fund if, within a period beginning 30 days before the date of such sale or
disposition and ending 30 days after such date, the holder acquires (including
shares acquired through dividend reinvestment) securities that are substantially
identical to the shares of the Fund.

In determining gain or loss on shares of the Fund that are sold or exchanged
within 90 days after acquisition, a shareholder generally will not be permitted
to include in the tax basis attributable to such shares the sales charge
incurred in acquiring such shares to the extent of any subsequent reduction of
the sales charge by reason of the Exchange or Reinstatement Privilege offered by
the Fund.  Any sales charge not taken into account in determining the tax basis
of shares sold or exchanged within 90 days after acquisition will be added to
the shareholder's tax basis in the shares acquired pursuant to the Exchange or
Reinstatement Privilege.

The Fund will generally be subject to an excise tax of 4% on the amount of any
income or capital gains, above certain permitted levels, distributed to
shareholders on the basis such that such income or gain is not taxable to
shareholders in the calendar year in which it was earned by the Fund.
Furthermore, dividends declared in October, November or December, payable to
shareholders of record on a specified date in such a month and paid in the
following January will be treated as having been paid by the Fund and received
by each shareholder in December.  Under this rule, therefore, shareholders may
be taxed in one year on dividends or distributions actually received in January
of the following year.

Shareholders are urged to consult their tax advisors concerning the effect of
federal income taxes in their individual circumstances.

Unless a shareholder includes a certified taxpayer identification number (social
security number for individuals) on the account application and certifies that
the shareholder is not subject to backup withholding, the fund is required to
withhold and remit to the US Treasury a portion of distributions and other
reportable payments to the shareholder.  The rate of backup withholding is 31%.
Shareholders should be aware that, under regulations promulgated by the Internal
Revenue Service, the Fund may be fined $50 annually for each account for which a
certified taxpayer identification number is not provided.  In the event that
such a fine is imposed, the Fund may charge a service fee of up to $50 that may
be deducted from the shareholder's account and offset against any undistributed
dividends and capital gain distributions.  The Fund also reserves the right to
close any account which does not have a certified taxpayer identification
number.

                                       24
<PAGE>

                                  Underwriters

Distribution of Securities


The Fund and Seligman Advisors are parties to a Distributing Agreement dated
January 1, 1993 under which Seligman Advisors acts as the exclusive agent for
distribution of shares of the Fund.  Seligman Advisors accepts orders for the
purchase of Fund shares, which are offered continuously.  As general distributor
of the Fund's capital stock, Seligman Advisors allows reallowances to all
dealers on sales of Class A shares and Class C shares, as set forth above under
"Dealer Reallowances."  Seligman Advisors retains the balance of sales charges
and any CDSCs paid by investors.

Total initial sales charges paid by shareholders of Class A shares of the Fund
for the years ended December 31, 1999, 1998 and 1997 amounted to $329,136,
$508,356 and $578,570, respectively, of which $43,442, $58,596 and $65,673,
respectively, was retained by Seligman Advisors.  Total initial sales charges
paid by shareholders of Class C shares of the Fund for the period from May 27,
1999 (inception) to December 31, 1999 amounted to $43,977, none of which was
retained by Seligman Advisors.  No Class C shares of the Fund were issued or
outstanding during the years ended December 31, 1998 and 1997.


Compensation


Seligman Advisors, which is an affiliated person of Seligman, which is an
affiliated person of the Fund, received the following commissions and other
compensation from the Fund during the year ended December 31, 1999:


<TABLE>
<CAPTION>
                                        Compensation on
       Net Underwriting                 Redemptions and
        Discounts and                     Repurchases
  Commissions (Class A Sales     (CDSC on Class A, Class C and          Brokerage                 Other
      Charges Retained)              Class D Shares Retained)          Commissions           Compensation (1)
      -----------------              ------------------------          -----------           ----------------
<S>                             <C>                               <C>                   <C>
          $43,442                           $17,847                       $-0-                   $13,690
</TABLE>


(1)  Seligman Advisors has sold its rights to collect the distribution fees paid
     by the Fund in respect of Class B shares and any CDSC imposed on
     redemptions of Class B shares to FEP Capital, L.P., in connection with an
     arrangement with FEP Capital, L.P. as discussed above under "12b-1 Plan."
     In connection with this arrangement, Seligman Advisors receives payments
     from FEP Capital, L.P. based on the value of Class B shares sold. Such
     payments received for the year ended December 31, 1999 are reflected in the
     table.


Other Payments

Seligman Advisors shall pay broker/dealers, from its own resources, a fee on
purchases of Class A shares of $1,000,000 or more (NAV sales), calculated as
follows:  1.00% of NAV sales up to but not including $2 million; .80% of NAV
sales from $2 million up to but not including $3 million; .50% of NAV sales from
$3 million up to but not including $5 million; and .25% of NAV sales from $5
million and above.  The calculation of the fee will be based on assets held by a
"single person," including an individual, members of a family unit comprising
husband, wife and minor children purchasing securities for their own account, or
a trustee or other fiduciary purchasing for a single fiduciary account or single
trust.  Purchases made by a trustee or other fiduciary for a fiduciary account
may not be aggregated purchases made on behalf of any other fiduciary or
individual account.

Seligman Advisors shall also pay broker/dealers, from its own resources, a fee
on assets of certain investments in Class A shares of the Seligman mutual funds
participating in an "eligible employee benefit plan" that are attributable to
the particular broker/dealer.  The shares eligible for the fee are those on
which an initial sales charge was not paid because either the participating
eligible employee benefit plan has at least (1) $500,000 invested in the
Seligman mutual funds or (2) 50 eligible employees to whom such plan is made
available.  Class A shares representing only an initial purchase of Seligman
Cash Management Fund are not eligible for the fee.  Such shares will become
eligible for the fee once they are exchanged for shares of another Seligman
mutual fund.  The payment is based on cumulative sales for each Plan during a
single calendar year, or portion thereof.  The payment schedule, for each
calendar year, is as follows:  1.00% of sales up to but not including $2
million; .80% of sales from $2 million up to but not including $3 million; .50%
of sales from $3 million up to but not including $5 million; and .25% of sales
from $5 million and above.

                                       25
<PAGE>


Seligman Advisors may from time to time assist dealers by, among other things,
providing sales literature to, and holding informational programs for the
benefit of, dealers' registered representatives.  Dealers may limit the
participation of registered representatives in such informational programs by
means of sales incentive programs which may require the sale of minimum dollar
amounts of shares of Seligman mutual funds. Seligman Advisors may from time to
time pay a bonus or other incentive to dealers that sell shares of the Seligman
mutual funds.  In some instances, these bonuses or incentives may be offered
only to certain dealers which employ registered representatives who have sold or
may sell a significant amount of shares of the Fund and/or certain other mutual
funds managed by Seligman during a specified period of time.  Such bonus or
other incentive will be made in the form of cash or, if permitted, may take the
form of non-cash payments.  The non-cash payments will include (i) business
seminars at Seligman's headquarters or other locations, (ii) travel expenses,
including meals, entertainment and lodging, incurred in connection with trips
taken by qualifying registered representatives and members of their families to
places within or outside the United States, or (iii) the receipt of certain
merchandise.  The cash payments may include payment of various business expenses
of the dealer.  The cost to Seligman Advisors of such promotional activities and
payments shall be consistent with the rules of the National Association of
Securities Dealers, Inc., as then in effect.


                        Calculation of Performance Data


Class A
- -------

The average annual total returns for the Fund's Class A shares for the one-,
five-, and ten-year periods through December 31, 1999, were (1.14)%, 16.25% and
12.72%, respectively.  These returns were computed by subtracting the maximum
sales charge of 4.75% of the public offering price and assuming that all of the
dividends and capital gain distributions paid by the Fund's Class A shares, if
any, were reinvested over the relevant time period.  It was then assumed that at
the end of each period, the entire amount was redeemed.  The average annual
total return was then calculated by calculating the annual rate required for the
initial payment to grow to the amount which would have been received upon such
redemption (i.e., the average annual compound rate of return).  Table A below
illustrates the total return (income and capital) on Class A shares of the Fund,
assuming all dividend and capital gain distributions are reinvested in
additional shares.  It shows that a $1,000 investment in Class A shares made on
December 31, 1989 had a value of $3,311 on December 31, 1999, resulting in an
aggregate total return of 231.12%.

Class B
- -------

The average annual total returns for the Fund's Class B shares for the one-year
period ended December 31, 1999 and for the period from April 22, 1996
(inception) through December 31, 1999, were (1.76)% and 13.10%, respectively.
These returns were computed assuming that all of the dividends and capital gain
distributions paid by the Fund's Class B shares, if any, were reinvested over
the relevant time period.  It was then assumed that at the end of each period,
the entire amount was redeemed, subtracting the applicable CDSC.  Table B
illustrates the total return (income and capital) on the Fund's Class B shares,
assuming all dividends and capital gain distributions are reinvested in
additional shares.  It shows that a $1,000 investment in Class B shares made on
April 22, 1996 (commencement of operations of Class B shares) had a value of
$1,576 on December 31, 1999, resulting in an aggregate total return of 57.57%.

Class C
- -------



The total return for the Fund's Class C shares for the period from May 27, 1999
(inception) through December 31, 1999 was (1.28)%.  This return was computed by
subtracting the maximum sales charge of 1.00% of the public offering price and
assuming that all of the dividends and capital gain distributions paid by the
Fund's Class C shares, if any, were reinvested over the period.  It was then
assumed that at the end of the period, the entire amount was redeemed,
subtracting the 1% CDSC.  Table C illustrates the total return (income and
capital) on Class C shares of the Fund, assuming all dividends and capital gain
distributions are reinvested in additional shares.  It shows that a $1,000
investment in Class C shares on May 27, 1999 (commencement of operations of
Class C shares) had a value of $987 on December 31, 1999, resulting in an
aggregate total return of (1.28)%.


                                       26
<PAGE>


Class D
- -------

The average annual total returns for the Fund's Class D shares for the one- and
five-year periods ended December 31, 1999 and for the period from May 3, 1993
(inception) through December 31, 1999, were 2.02%, 16.49% and 13.04%,
respectively.  These returns were computed assuming that all of the dividends
and capital gain distributions paid by the Fund's Class D shares, if any, were
reinvested over the relevant time period.  It was then assumed that at the end
of each period, the entire amount was redeemed, subtracting the 1% CDSC, if
applicable.  Table D illustrates the total return (income and capital) on the
Fund's Class D shares, assuming all dividends and capital gain distributions are
reinvested in additional shares.  It shows that a $1,000 investment in Class D
shares made on May 3, 1993 (commencement of operations of Class D shares) had a
value of $2,264 on December 31, 1999, resulting in an aggregate total return of
126.41%.


The results shown below should not be considered a representation of the
dividend income or gain or loss in capital value which may be realized from an
investment made in a class of shares of the Fund today.

                               TABLE A - CLASS A

<TABLE>
<CAPTION>
                           Value of            Value of            Value             Total Value
       Year                Initial           Capital Gain            of                   of                    Total
     Ended(1)           Investment(2)        Distributions       Dividends          Investment(2)            Return(1)(3)
     --------           -------------        -------------       ---------          -------------            ------------
<S>                  <C>                   <C>                <C>               <C>                     <C>
12/31/90                   $  825               $   60              $ 30               $  915
12/31/91                      976                  142                72                1,190
12/31/92                      995                  213               111                1,319
12/31/93                    1,048                  310               156                1,514
12/31/94                      943                  362               180                1,485
12/31/95                    1,104                  543               257                1,904
12/31/96                    1,159                  723               317                2,199
12/31/97                    1,239                1,092               386                2,717
12/31/98                    1,227                1,528               434                3,189
12/31/99                    1,162                1,693               456                3,311                   231.12%
</TABLE>

                               TABLE B - CLASS B

<TABLE>
<CAPTION>
                           Value of             Value of             Value             Total Value
      Period               Initial            Capital Gain            of                   of                    Total
     Ended(1)            Investment(2)        Distributions        Dividends          Investment(2)           Return(1)(3)
     --------            -------------        -------------        ---------          -------------           ------------
<S>                  <C>                   <C>                <C>               <C>                     <C>
     12/31/96               $1,005                 $ 76               $11                $1,092
     12/31/97                1,073                  239                27                 1,339
     12/31/98                1,061                  457                41                 1,559
     12/31/99                  974                  552                50                 1,576                  57.57%
</TABLE>

                               TABLE C - CLASS C

<TABLE>
<CAPTION>
                           Value of            Value of            Value             Total Value
       Period              Initial           Capital Gain            of                   of                    Total
      Ended(1)          Investment(2)        Distributions       Dividends          Investment(2)            Return(1)(3)
      --------          -------------        -------------       ---------          -------------            ------------
<S>                  <C>                   <C>                <C>               <C>                     <C>
      12/31/99              $907                  $75                $5                 $987                    (1.28)%
</TABLE>


                                       27
<PAGE>


                               TABLE D - CLASS D

<TABLE>
<CAPTION>
                            Value of            Value of            Value             Total Value
       Period               Initial           Capital Gain            of                   of                    Total
      Ended(1)           Investment(2)        Distributions       Dividends          Investment(2)            Return(1)(3)
      --------           -------------        -------------       ---------          -------------            ------------
<S>                   <C>                   <C>                <C>               <C>                     <C>
      12/31/93              $1,013              $   62              $ 16               $1,091
      12/31/94                 909                 115                32                1,056
      12/31/95               1,065                 220                57                1,342
      12/31/96               1,119                 338                81                1,538
      12/31/97               1,197                 583               107                1,887
      12/31/98               1,184                 888               127                2,199
      12/31/99               1,119               1,008               137                2,264                    126.41%
</TABLE>
_________________________
(1) For the ten-year period ended December 31, 1999 for Class A shares, from
    commencement of operations of Class B shares on April 22, 1996, from
    commencement of operations of Class C shares on May 27, 1999 and from
    commencement of operations of Class D shares on May 3, 1993.
(2) The "Value of Initial Investment" as of the date indicated (1) reflects the
    effect of the maximum initial sales charge or CDSC, if applicable, (2)
    assumes that all dividends and capital gain distributions were taken in
    cash, and (3) reflects changes in the net asset value of the shares
    purchased with the hypothetical initial investment.  "Total Value of
    Investment" (1) reflects the effect of the CDSC, if applicable, and (2)
    assumes investment of all dividends and capital gain distributions.
(3) Total return for each Class of shares of the Fund is calculated by assuming
    a hypothetical initial investment of $1,000 at the beginning of the period
    specified; subtracting the maximum sales charge for Class A shares and Class
    C shares; determining total value of all dividends and capital gain
    distributions that would have been paid during the period on such shares
    assuming that each dividend or capital gain distribution was invested in
    additional shares at net asset value; calculating the total value of the
    investment at the end of the period; subtracting the CDSC on Class B, Class
    C and Class D shares, if applicable; and finally, by dividing the difference
    between the amount of the hypothetical initial investment at the beginning
    of the period and its total value at the end of the period by the amount of
    the hypothetical initial investment.


The total returns and average annual total returns of Class A shares quoted from
time to time for periods through December 31, 1992, do not reflect the deduction
of 12b-1 fees because the 12b-1 Plan was implemented on January 1, 1993.  The
total returns and average annual total returns of Class A shares quoted from
time to time for periods through April 10, 1991, do not reflect the increased
management fee approved by shareholders on April 10, 1991.  The total returns
and average annual total returns for Class A and Class D shares for periods
through December 31, 1995 do not reflect the increased management fee, approved
by shareholders on December 12, 1995, and effective on January 1, 1996.  These
fees, if reflected, would reduce the performance quoted.


From time to time, reference may be made in advertising or promotional material
to performance information, including mutual fund rankings, prepared by Lipper
Analytical Services, Inc., an independent reporting service which monitors the
performance of mutual funds.  In calculating the total return of the Fund's
Class A, Class B, Class C and Class D shares, the Lipper analysis assumes
investment of all dividends and distributions paid but does not take into
account applicable sales charges.  The Fund may also refer in advertisements in
other promotional material to articles, comments, listings and columns in the
financial press pertaining to the Fund's performance.  Examples of such
financial and other press publications include BARRON'S, BUSINESS WEEK,
CDA/WIESENBERGER MUTUAL FUNDS INVESTMENT REPORT, CHRISTIAN SCIENCE MONITOR,
FINANCIAL PLANNING, FINANCIAL TIMES, FINANCIAL WORLD, FORBES, FORTUNE,
INDIVIDUAL INVESTOR, INVESTMENT ADVISOR, INVESTORS BUSINESS DAILY, KIPLINGER'S,
LOS ANGELES TIMES, MONEY MAGAZINE, MORNINGSTAR, INC., PENSION AND INVESTMENTS,
SMART MONEY, THE NEW YORK TIMES, THE WALL STREET JOURNAL, USA TODAY, U.S. NEWS
AND WORLD REPORT, WORTH MAGAZINE, WASHINGTON POST and YOUR MONEY.


The Fund's advertising or promotional material may make reference to the Fund's
"Beta," "Standard Deviation," or "Alpha."  Beta measures the volatility of the
Fund, as compared to that of the overall market.  Standard deviation measures
how widely the Fund's performance has varied from its average performance, and
is an indicator of the Fund's potential for volatility.  Alpha measures the
difference between the returns of the Fund and the returns of the market,
adjusted for volatility.

                                       28
<PAGE>


                              Financial Statements

The Annual Report to shareholders for the year ended December 31, 1999 contains
a schedule of the investments of the Fund as of December 31, 1999, as well as
certain other financial information as of that date.  The financial statements
and notes included in the Annual Report, and the Independent Auditors' Report
thereon, are incorporated herein by reference.  The Annual Report will be
furnished without charge to investors who request copies of this SAI.

                              General Information

Custodian.  Investors Fiduciary Trust Company, 801 Pennsylvania, Kansas City,
Missouri 64105, serves as custodian of the Fund.  It also maintains, under the
general supervision of Seligman, the accounting records and determines the net
asset value for the Fund.

Auditors.  Deloitte & Touche LLP, independent auditors, have been selected as
auditors of the Fund.  Their address is Two World Financial Center, New York, NY
10281.


                                       29
<PAGE>

                                    Appendix


                 HISTORY OF J. & W. SELIGMAN & CO. INCORPORATED


Seligman's beginnings date back to 1837, when Joseph Seligman, the oldest of
eight brothers, arrived in the United States from Germany.  He earned his living
as a pack peddler in Pennsylvania, and began sending for his brothers.  The
Seligmans became successful merchants, establishing businesses in the South and
East.

Backed by nearly thirty years of business success - culminating in the sale of
government securities to help finance the Civil War - Joseph Seligman, with his
brothers, established the international banking and investment firm of

J. & W. Seligman & Co.  In the years that followed, the Seligman Complex played
a major role in the geographical expansion and industrial development of the
United States.

The Seligman Complex:

 ...Prior to 1900

 .    Helps finance America's fledgling railroads through underwritings.
 .    Is admitted to the New York Stock Exchange in 1869. Seligman remained a
     member of the NYSE until 1993, when the evolution of its business made it
     unnecessary.
 .    Becomes a prominent underwriter of corporate securities, including New York
     Mutual Gas Light Company, later part of Consolidated Edison.
 .    Provides financial assistance to Mary Todd Lincoln and urges the Senate to
     award her a pension.
 .    Is appointed U.S. Navy fiscal agent by President Grant.
 .    Becomes a leader in raising capital for America's industrial and urban
     development.

 ...1900-1910

 .    Helps Congress finance the building of the Panama Canal.

 ...1910s

 .    Participates in raising billions for Great Britain, France and Italy,
     helping to finance World War I.

 ...1920s

 .    Participates in hundreds of successful underwritings including those for
     some of the country's largest companies: Briggs Manufacturing, Dodge
     Brothers, General Motors, Minneapolis-Honeywell Regulatory Company, Maytag
     Company, United Artists Theater Circuit and Victor Talking Machine Company.
 .    Forms Tri-Continental Corporation in 1929, today the nation's largest,
     diversified closed-end equity investment company, with over $2 billion in
     assets, and one of its oldest.

 ...1930s

 .    Assumes management of Broad Street Investing Co. Inc., its first mutual
     fund, today known as Seligman Common Stock Fund, Inc.
 .    Establishes Investment Advisory Service.

                                       30
<PAGE>

 ...1940s

 .    Helps shape the Investment Company Act of 1940.
 .    Leads in the purchase and subsequent sale to the public of Newport News
     Shipbuilding and Dry Dock Company, a prototype transaction for the
     investment banking industry.
 .    Assumes management of National Investors Corporation, today Seligman Growth
     Fund, Inc.
 .    Establishes Whitehall Fund, Inc., today Seligman Income Fund, Inc.

 ...1950-1989

 .    Develops new open-end investment companies. Today, manages more than 50
     mutual fund portfolios.
 .    Helps pioneer state-specific municipal bond funds, today managing a
     national and 18 state-specific municipal funds.
 .    Establishes J. & W. Seligman Trust Company and J. & W. Seligman Valuations
     Corporation.
 .    Establishes Seligman Portfolios, Inc., an investment vehicle offered
     through variable annuity products.

 ...1990s


 .    Introduces Seligman Select Municipal Fund, Inc. and Seligman Quality
     Municipal Fund, Inc. two closed-end funds that invest in high quality
     municipal bonds.
 .    Introduces to the public Seligman Frontier Fund, Inc., a small
     capitalization mutual fund.
 .    Launches Seligman Global Fund Series, Inc., which today offers five
     separate series: Seligman International Growth Fund, Seligman Global
     Smaller Companies Fund, Seligman Global Technology Fund, Seligman Global
     Growth Fund and Seligman Emerging Markets Fund.
 .    Launches Seligman Value Fund Series, Inc., which currently offers two
     separate series: Seligman Large-Cap Value Fund and Seligman Small-Cap Value
     Fund.
 .    Launches innovative Seligman New Technologies Fund, Inc., a closed-end
     "interval" fund seeking long-term capital appreciation by investing in
     technology companies, including venture capital investing.

 ...2000

 .    Introduces Seligman Time Horizon/Harvester Series, Inc., an asset
     allocation type mutual fund containing four funds: Seligman Time Horizon 30
     Fund, Seligman Time Horizon 20 Fund, Seligman Time Horizon 10 Fund and
     Seligman Harvester Fund.



                                       31
<PAGE>

                                                                     No. 2-10835
                                                                         811-234

PART C.  OTHER INFORMATION
- -------  -----------------

Item 23. Exhibits.
- -------  ---------

         All Exhibits have been previously filed; except Exhibits marked with
an asterisk (*) which are filed herewith.


(a)    Articles Supplementary dated May 24, 1999. (Incorporated by reference to
       Registrant's Post-Effective Amendment No. 79 filed on May 28, 1999.)


(a)(1) Articles of Amendment and Articles Supplementary to Articles of
       Incorporation of Registrant. (Incorporated by reference to Registrant's
       Post-Effective Amendment No. 75 filed on April 29, 1997.)

(b)    By-laws of the Corporation. (Incorporated by reference to Registrant's
       Post-Effective Amendment No. 75 filed on April 29, 1997.)

(c)    Specimen certificate of Class B Capital Stock. (Incorporated by reference
       to Form SE filed on behalf of the Registrant on April 16, 1996)

(c)(1) Specimen certificate of Class D Capital Stock. (Incorporated by Reference
       to Registrant's Post-Effective Amendment No. 71 filed on April 23, 1993.)

(d)    Amended Management Agreement between Registrant and J. & W. Seligman &
       Co. Incorporated. (Incorporated by reference to Post-Effective Amendment
       No. 74 filed on April 19, 1996.)


(e)    Addendum to Sales/Bank Agreement. (Incorporated by reference to Post-
       Effective Amendment No. 57 to the Registration Statement of Seligman
       Capital Fund, Inc. (File No. 811-1886) filed on May 28, 1999.)

(e)(1) Form of Bank Agreement between Seligman Advisors, Inc. and Banks.
       (Incorporated by reference to Post-Effective Amendment No. 57 to the
       Registration Statement of Seligman Capital Fund, Inc. (File No. 811-1886)
       filed on May 28, 1999.)


(e)(2) Form of Amended Distributing Agreement between Registrant and Seligman
       Advisors, Inc. (Incorporated by reference to Registrant's Post-Effective
       Amendment No. 75 filed on April 29, 1997.)

(e)(3) Form of Amended Sales Agreement between Seligman Advisors, Inc. and
       Dealers. (Incorporated by reference to Post-Effective Amendment No. 74
       filed on April 19, 1996.)


(e)(4) Form of Sales Agreement between Seligman Advisors, Inc. and Morgan
       Stanley Dean Witter & Co. (Incorporated by reference to Post-Effective
       Amendment No. 53 to the Registration Statement of Seligman Capital Fund,
       Inc. (File No. 811-1886) filed on April 28, 1997.)

(e)(5) Form of Sales Agreement between Seligman Advisors, Inc. and Morgan
       Stanley Dean Witter & Co. with respect to certain Chilean institutional
       investors. (Incorporated by reference to Post-Effective Amendment No. 53
       to the Registration Statement of Seligman Capital Fund, Inc. (File No.
       811-1886) filed on April 28, 1997.)

(e)(6) Form of Dealer Agreement between Seligman Advisors, Inc. and Salomon
       Smith Barney Inc. (Incorporated by reference to Post-Effective Amendment
       No. 53 to the Registration Statement of Seligman Capital Fund, Inc. (File
       No. 811-1886) filed on April 28, 1997.)


                                      C-1
<PAGE>

                                                                     No. 2-10835
                                                                         811-234

PART C.  OTHER INFORMATION (continued)
- -------  ------------------


(f)    Matched Accumulation Plan of J. & W. Seligman & Co. Incorporated.
       (Incorporated by reference to Post-Effective Amendment No. 21 to the
       Registration Statement of Seligman Frontier Fund, Inc. (File No.
       811-4078) filed on January 28, 1997.)


(f)(1) Deferred Compensation Plan for Directors of Seligman Common Stock Fund.
       (Incorporated by reference to Registrant's Post-Effective Amendment No.
       76 filed on April 29, 1998.)

(g)    Copy of Custodian Agreement between Registrant and Investors Fiduciary
       Trust Company. (Incorporated by reference to Registrant's Post-Effective
       Amendment No. 75 filed on April 29, 1997.)

(h)    Not applicable.


(i)    Opinion and Consent of Counsel in respect of Class C shares.
       (Incorporated by reference to Registrant's Post-Effective Amendment No.
       79 filed on May 28, 1999.)


(i)(1) Opinion and Consent of Counsel. (Incorporated by reference to
       Registrant's Post-Effective Amendment No. 75 filed on April 29, 1997.)

(j)    *Consent of Independent Auditors.

(k)    Not applicable.


(l)    Form of Purchase Agreement (Investment Letter) for Initial Capital for
       Class C shares between Registrant and J. & W. Seligman & Co.
       Incorporated. (Incorporated by reference to Registrant's Post-Effective
       Amendment No. 79 filed on May 28, 1999.)


(l)(1) Purchase Agreement (Investment Letter) for Initial Capital for Class B
       shares between Registrant and J. & W. Seligman & Co. Incorporated.
       (Incorporated by reference to Registrant's Post-Effective Amendment No.
       75 filed on April 29, 1997.)

(l)(2) Purchase Agreement (Investment Letter) for Initial Capital for Class D
       Shares between Registrant and J. & W. Seligman & Co. Incorporated.
       (Incorporated by reference to Registrant's Post-Effective Amendment No.
       75 filed on April 29, 1997.)


(m)    Amended Administration, Shareholder Services and Distribution Plan.
       (Incorporated by reference to Post-Effective Amendment No. 57 to the
       Registration Statement to the Seligman Capital Fund, Inc. (File No. 811-
       1886) filed on May 28, 1999.)

(m)(2) Amended Administration, Shareholder Services and Distribution Agreement
       between Seligman Advisors, Inc. and Dealers. (Incorporated by reference
       to Post-Effective Amendment No. 57 to the Registration Statement to the
       Seligman Capital Fund, Inc. (File No. 811-1886) filed on May 28, 1999.)

(o)    Plan of Multiple Classes of Shares (four Classes) pursuant to Rule 18f-3
       under the Investment Company Act of 1940. (Incorporated by reference to
       Post-Effective Amendment No. 57 to the Registration Statement to the
       Seligman Capital Fund, Inc. (File No. 811-1886) filed on May 28, 1999.)

(p)    *Code of Ethics.



(Other Exhibits)  Power of Attorney for Richard R. Schmaltz.  (Incorporated by
                  reference to Registrant's Post-Effective Amendment No. 76
                  filed on April 29, 1998.)


                                      C-2
<PAGE>

                                                                     No. 2-10835
                                                                         811-234

PART C.  OTHER INFORMATION (continued)
- -------  ------------------

              Powers of Attorney. (Incorporated by reference to Registrant's
              Post-Effective Amendment No. 75 filed on April 29, 1997.)

Item 24.      Persons Controlled by or Under Common Control with Registrant.
- -------       --------------------------------------------------------------

              Seligman Data Corp. ("SDC"), a New York corporation, is owned by
              the Registrant and certain associated investment companies. The
              Registrant's investment in SDC is recorded at a cost of $22,506.

Item 25.      Indemnification.  Reference is made to the provisions of Articles
- --------      ----------------
              Twelfth and Thirteenth of Registrant's Amended and Restated
              Articles of Incorporation filed as Exhibit 24(b)(1) and Article IV
              of Registrant's Amended and Restated By-laws filed as Exhibit
              24(b)(2) to Registrant's Post-Effective Amendment No. 75 to the
              Registration Statement.


              Insofar as indemnification for liabilities arising under the
              Securities Act of 1933, as amended, may be permitted to directors,
              officers and controlling persons of the Registrant pursuant to the
              foregoing provisions, or otherwise, the Registrant has been
              advised by the Securities and Exchange Commission such
              indemnification is against public policy as expressed in the Act
              and is, therefore, unenforceable. In the event that a claim for
              indemnification against such liabilities (other than the payment
              by the Registrant of expenses incurred or paid by a director,
              officer or controlling person of the Registrant in the successful
              defense of any action, suit or proceeding) is asserted by such
              director, officer or controlling person in connection with the
              securities being registered, the Registrant will, unless in the
              opinion of its counsel the matter has been settled by controlling
              precedent, submit to a court of appropriate jurisdiction the
              question whether such indemnification by it is against public
              policy as expressed in the Act and will be governed by the final
              adjudication of such issue.

Item 26.      Business and Other Connections of Investment Adviser.  J. & W.
- --------      -----------------------------------------------------
              Seligman & Co. Incorporated, a Delaware corporation (Seligman), is
              the Registrant's investment manager. Selgiman also serves as
              investment manager to nineteen associated investment companies.
              They are Seligman Capital Fund, Inc., Seligman Cash Management
              Fund, Inc., Seligman Communications and Information Fund, Inc.,
              Seligman Frontier Fund, Inc., Seligman Growth Fund, Inc., Seligman
              Global Fund Series, Inc., Seligman High Income Fund Series,
              Seligman Income Fund, Inc., Seligman Municipal Fund Series, Inc.,
              Seligman Municipal Series Trust, Seligman New Jersey Municipal
              Fund, Inc., Seligman New Technologies Fund, Inc., Seligman
              Pennsylvania Municipal Fund Series, Seligman Portfolios, Inc.,
              Seligman Quality Municipal Fund, Inc., Seligman Select Municipal
              Fund, Inc., Seligman Time Horizon/Harvester Series, Inc., Seligman
              Value Fund Series, Inc. and Tri-Continental Corporation.

              Seligman has an investment advisory service division which
              provides investment management or advice to private clients. The
              list required by this Item 26 of officers and directors of
              Seligman, together with information as to any other business,
              profession, vocation or employment of a substantial nature engaged
              in by such officers and directors during the past two years, is
              incorporated by reference to Schedules A and D of Form ADV, filed
              by Seligman, pursuant to the Investment Advisers Act of 1940, as
              amended (SEC File No. 801-15798), which was filed on March 30,
              2000.


Item 27.      Principal Underwriters.
- -------       -----------------------


       (a)    The names of each investment company (other than the Registrant)
              for which Registrant's principal underwriter currently
              distributing securities of the Registrant also acts as a principal
              underwriter, depositor or investment adviser follow: Seligman Cash
              Management Fund, Inc., Seligman Capital Fund, Inc., Seligman
              Communications and Information Fund, Inc., Seligman Frontier Fund,
              Inc., Seligman Growth Fund, Inc., Seligman Global Fund Series,
              Inc., Seligman High Income Fund Series, Seligman Income Fund,
              Inc., Seligman Municipal Fund Series, Inc., Seligman Municipal
              Series Trust, Seligman New Jersey Municipal Fund, Inc., Seligman
              Pennsylvania Municipal Fund Series, Seligman Portfolios, Inc.,
              Seligman Time Horizon/Harvester Series, Inc., Seligman Value Fund
              Series, Inc.

                                      C-3
<PAGE>
                                                                     No. 2-10835
                                                                         811-234

PART C.  OTHER INFORMATION (continued)
- -------  -----------------

  (b)    Name of each director, officer or partner of Registrant's principal
         underwriter named in response to Item 20:

                             Seligman Advisors, Inc.
                             -----------------------
                              As of March 31, 2000
                              --------------------
<TABLE>
<S>                                   <C>                                       <C>
          (1)                              (2)                                          (3)
     Name and Principal               Positions and Offices                     Positions and Offices
     Business Address                 with Underwriter                          with Registrant
     ----------------                 ----------------                          ---------------
     William C. Morris*               Director                                  Chairman of the Board and Chief Executive Officer
     Brian T. Zino*                   Director                                  President and Director
     Ronald T. Schroeder*             Director                                  None
     Fred E. Brown*                   Director                                  Director Emeritus
     William H. Hazen*                Director                                  None
     Thomas G. Moles*                 Director                                  None
     David F. Stein*                  Director                                  None
     Stephen J. Hodgdon*              President and Director                    None
     Charles W. Kadlec*               Chief Investment Strategist               None
     Lawrence P. Vogel*               Senior Vice President, Finance            Vice President
     Edward F. Lynch*                 Senior Vice President, National           None
                                      Sales Director
     James R. Besher                  Senior Vice President, Division           None
     14000 Margaux Lane               Sales Director
     Town & Country, MO  63017
     Gerald I. Cetrulo, III           Senior Vice President, Sales              None
     140 West Parkway
     Pompton Plains, NJ  07444
     Matthew A. Digan*                Senior Vice President,                    None
                                      Domestic Funds
     Jonathan G. Evans                Senior Vice President, Sales              None
     222 Fairmont Way
     Ft. Lauderdale, FL  33326
     T. Wayne Knowles                 Senior Vice President, Division           None
     104 Morninghills Court           Sales Director
     Cary, NC  27511
     Joseph Lam                       Senior Vice President, Regional           None
     Seligman International, Inc.     Director, Asia
     Suite 1133, Central Building
     One Pedder Street
     Central Hong Kong
     Bradley W. Larson                Senior Vice President, Sales              None
     367 Bryan Drive
     Alamo, CA  94526
     Michelle L. McCann-Rappa*        Senior Vice President, Retirement Plans   None
     Scott H. Novak*                  Senior Vice President, Insurance          None
     Jeff Rold                        Senior Vice President, Product            None
     181 East 73rd Street, Apt 20B    Business Management
     New York, New York  10021
     Ronald W. Pond*                  Senior Vice President, Division           None
                                      Sales Director
</TABLE>

                                      C-4
<PAGE>

                                                                     No. 2-10835
                                                                         811-234

PART C.  OTHER INFORMATION (continued)
- -------  -----------------

                             Seligman Advisors, Inc.
                             -----------------------
                              As of March 31, 2000
                              --------------------
<TABLE>
<S>                                       <C>                                    <C>
          (1)                                     (2)                                   (3)
     Name and Principal                   Positions and Offices                  Positions and Offices
     Business Address                     with Underwriter                       with Registrant
     ----------------                     ----------------                       ---------------
     Richard M. Potocki                   Senior Vice President, Regional        None
     Seligman International UK Limited    Director, Europe and the Middle East
     Berkeley Square House 2nd Floor
     Berkeley Square
     London, United Kingdom W1X 6EA
     Bruce M. Tuckey                      Senior Vice President, Sales           None
     41644 Chathman Drive
     Novi, MI  48375
     Andrew S. Veasey                     Senior Vice President, Sales           None
     14 Woodside Drive
     Rumson, NJ  07760
     Charles L. von Breitenbach, II*      Senior Vice President, Managed         None
                                          Money
     Gail S. Cushing*                     Vice President, National Accounts      None
     Jeffrey S. Dean*                     Vice President, Business Analysis      None
     Ron Dragotta*                        Vice President, Regional Retirement    None
                                          Plans Manager
     Mason S. Flinn                       Vice President, Regional Retirement    None
     2130 Filmore Street                  Plans Manager
     PMB 280
     San Francisco, CA  94115-2224
     Marsha E. Jacoby*                    Vice President, Offshore Business      None
                                          Manager
     Jody Knapp*                          Vice President, Regional Retirement    None
     17011 East Monterey Drive            Plans Manager
     Fountain Hills, AZ  85268
     David W. Mountford*                  Vice President, Regional Retirement    None
     7131 NW 46th Street                  Plans Manager
     Lauderhill, FL  33319
     Jeffery C. Pleet*                    Vice President, Regional Retirement    None
                                          Plans Manager
     Tracy A. Salomon*                    Vice President, Retirement Marketing   None
     Helen Simon*                         Vice President, Sales Administration   None
     Gary A. Terpening*                   Vice President, Director of Business   None
                                          Development
     John E. Skillman*                    Vice President, Portfolio Advisor      None
     Charles E. Wenzel                    Vice President, Regional Retirement    None
     703 Greenwood Road                   Plans Manager
     Wilmington, DE  19807
     Robert McBride                       Vice President, Marketing Director     None
     Seligman International, Inc.         Latin America
     Sucursal Argentina
     Edificio Laminar Plaza
     Ingeniero Butty No. 240, 4th Floor
     C1001ASB Buenos Aires, Argentina
</TABLE>

                                      C-5
<PAGE>

                                                                     No. 2-10835
                                                                         811-234

PART C.  OTHER INFORMATION (continued)
- -------  -----------------

                            Seligman Advisors, Inc.
                            -----------------------
                              As of March 31, 2000
                              --------------------
<TABLE>
<CAPTION>

<S>                                <C>                       <C>
          (1)                             (2)                      (3)
     Name and Principal            Positions and Offices     Positions and Offices
     Business Address              with Underwriter          with Registrant
     ----------------              ----------------          ---------------
     Daniel Chambers               Regional Vice President   None
     4618 Lorraine Avenue
     Dallas, TX  75209
     Richard B. Callaghan          Regional Vice President   None
     7821 Dakota Lane
     Orland Park, IL  60462
     Kevin Casey                   Regional Vice President   None
     19 Bayview Avenue
     Babylon, NY  11702
     Bradford C. Davis             Regional Vice President   None
     241 110th Avenue SE
     Bellevue, WA  98004
     Cathy Des Jardins             Regional Vice President   None
     PMB 152
     1705 14th Street
     Boulder, CO  80302
     Kenneth Dougherty             Regional Vice President   None
     8640 Finlarig Drive
     Dublin, OH  43017
     Kelli A. Wirth Dumser         Regional Vice President   None
     7121 Jardiniere Court
     Charlotte, NC  28226
     Edward S. Finocchiaro         Regional Vice President   None
     120 Screenhouse Lane
     Duxbury, MA  02332
     Michael C. Forgea             Regional Vice President   None
     32 W. Anapamu Street # 186
     Santa Barbara, CA  93101
     Carla A. Goehring             Regional Vice President   None
     11426 Long Pine Drive
     Houston, TX  77077
     Michael K. Lewallen           Regional Vice President   None
     908 Tulip Poplar Lane
     Birmingham, AL  35244
     Judith L. Lyon                Regional Vice President   None
     7105 Harbour Landing
     Alpharetta, GA  30005
     Leslie A. Mudd                Regional Vice President   None
     5243 East Calle Redonda
     Phoenix, AZ  85018
     Tim O'Connell                 Regional Vice President   None
     11908 Acacia Glen Court
     San Diego, CA  92128
     George M. Palmer, Jr.         Regional Vice President   None
     1805 Richardson Place
     Tampa, FL  33606
</TABLE>

                                      C-6
<PAGE>

                                                                     No. 2-10835
                                                                         811-234

PART C.  OTHER INFORMATION (continued)
- -------  -----------------

                             Seligman Advisors, Inc.
                             -----------------------
                              As of March 31, 2000
                              --------------------
<TABLE>
<CAPTION>
          (1)                              (2)                                   (3)
     Name and Principal             Positions and Offices                  Positions and Offices
     Business Address               with Underwriter                       with Registrant
     ----------------               ----------------                       ---------------
<S>                                 <C>                                    <C>
     Thomas Parnell                 Regional Vice President                None
     1575 Edgecomb Road
     St. Paul, MN  55116
     Craig Prichard                 Regional Vice President                None
     300 Spyglass Drive
     Fairlawn, OH  44333
     Nicholas Roberts               Regional Vice President                None
     200 Broad Street, Apt. 2451
     Stamford, CT  06901
     Diane H. Snowden               Regional Vice President                None
     11 Thackery Lane
     Cherry Hill, NJ  08003
     James Taylor                   Regional Vice President                None
     290 Bellington Lane
     Creve Coeur, MO  63141
     Steve Wilson                   Regional Vice President                None
     83 Kaydeross Park Road
     Saratoga Springs, NY  12866
     Frank J. Nasta*                Secretary                              Secretary
     Aurelia Lacsamana*             Treasurer                              None
     Sandra G. Floris*              Assistant Vice President, Order Desk   None
     Keith Landry*                  Assistant Vice President, Order Desk   None
     Albert A. Pisano*              Assistant Vice President and           None
                                    Compliance Officer
     Joyce Peress*                  Assistant Secretary                    Assistant Secretary
</TABLE>

*  The principal business address of each of these directors and/or officers is
   100 Park Avenue, New York, NY 10017.


Item 28.  Location of Accounts and Records.  The accounts, books and documents
- --------  ---------------------------------
          required to be maintained by Section 31(a) of the Investment Company
          Act of 1940 and the Rules promulgated thereunder are kept in the
          possession of J. & W. Seligman & Co. Incorporated at its offices at
          100 Park Avenue, New York, NY 10017 or at the following locations: (1)
          Investors Fiduciary Trust Company, 801 Pennsylvania, Kansas City,
          Missouri 64105 is custodian of the Registrant's cash and securities.
          It also is agent to perform certain accounting and record-keeping
          functions relating to portfolio transactions and to calculate the net
          asset value of the Registrant, and (2) Seligman Data Corp., 100 Park
          Avenue, New York, NY 10017, as shareholder servicing agent, maintains
          shareholder records for the Registrant.


Item 29.  Management Services.  Not applicable.
- --------  --------------------

Item 30.  Undertakings.  The Registrant undertakes:  (1) to furnish a copy of
- --------  -------------
          the Registrant's latest Annual Report, upon request and without
          charge, to every person to whom a prospectus is delivered and (2) if
          requested to do so by the holders of at least 10% of its outstanding
          shares, to call a meeting of shareholders for the purpose of voting
          upon the removal of a director or directors and to assist in
          communications with other shareholders as required by Section 16(c) of
          the Investment Company Act of 1940, as amended.

                                      C-7
<PAGE>

                                                                     No. 2-10835
                                                                         811-234

                                  SIGNATURES
                                  ----------


Pursuant to the requirements of the Securities Act of 1933, and the Investment
Company Act of 1940, the Registrant certifies that it meets all of the
requirements for effectiveness of this Post-Effective Amendment No. 80 pursuant
to Rule 485(b) under the Securities Act of 1933 and has duly caused this Post-
Effective Amendment No. 80 to its Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of New York,
State of New York, on the 28th day of April, 2000.


                                    SELIGMAN COMMON STOCK FUND, INC.




                                    By: /s/ William C. Morris
                                        -------------------------------------
                                        William C. Morris, Chairman


Pursuant to the requirements of the Securities Act of 1933 and the Investment
Company Act of 1940, this Post-Effective Amendment No. 80 has been signed below
by the following persons in the capacities indicated on April 28, 2000.


        Signature                                Title
        ---------                                -----


/s/  William C. Morris                 Chairman of the Board (Principal
- ------------------------------         executive officer) and Director
     William C. Morris

/s/  Brian T. Zino                     Director and President
- ------------------------------
     Brian T. Zino


/s/  Thomas G. Rose                    Treasurer
- ------------------------------
     Thomas G. Rose



John R. Galvin, Director         )
Alice S. Ilchman, Director       )
Frank A. McPherson, Director     )
John E. Merow, Director          )
Betsy S. Michel, Director        )          /s/ Brian T. Zino
James C. Pitney, Director        )          ------------------------------------
James Q. Riordan, Director       )              Brian T. Zino, Attorney-in-fact
Richard R. Schmaltz, Director    )
Robert L. Shafer, Director       )
James N. Whitson, Director       )

<PAGE>
                                                                     No. 2-10835
                                                                         811-234


                        SELIGMAN COMMON STOCK FUND, INC.
                     Post-Effective Amendment No. 80 to the
                       Registration Statement on Form N-1A


                                  EXHIBIT INDEX

Form N-1A Item No.            Description
- ------------------            -----------

Item 23 (j)                   Consent of Independent Auditors

Item 23(p)                    Code of Ethics



<PAGE>

                                                                  Exhibit 99.23J


CONSENT OF INDEPENDENT AUDITORS

Seligman Common Stock Fund, Inc.:

We consent to the use in Post-Effective Amendment No. 80 to Registration
Statement No.

2-10835 of our report dated February 11, 2000, appearing in the Annual Report to
Shareholders for the year ended December 31, 1999, which is incorporated by
reference in the Statement of Additional Information, which is included in such
Registration Statement, and to the references to us under the captions
"Financial Highlights" in the Prospectus and "General Information" in the
Statement of Additional Information, which are also included in such
Registration Statement.



DELOITTE & TOUCHE LLP
New York, New York
April 24, 2000

<PAGE>

                                                                  Exhibit 99.23P

                                 CODE OF ETHICS
                                 --------------

                       J. & W. Seligman & Co. Incorporated
                             Seligman Advisors, Inc.
                             Seligman Services, Inc.
                               Seligman Data Corp.
                          Seligman International, Inc.
                        Seligman International UK Limited
                   The Seligman Group of Investment Companies

                                 I. Introduction

A primary duty of all directors, officers and employees (collectively
"Employees") of J. & W. Seligman & Co. Incorporated, its subsidiaries and
affiliates (collectively, "Seligman") is to be faithful to the interest of the
various Seligman advisory clients, including the registered and unregistered
companies advised by Seligman (collectively, "Clients").  Directors of the
Seligman Registered Investment Companies also have a duty to the Seligman
Registered Investment Companies and their shareholders.  Persons who are
Disinterested Directors are "Employees" for purposes of this Code of Ethics.

Through the years, Seligman and its predecessor organizations have had a
reputation of maintaining the highest business and ethical standards and have
been favored with the confidence of investors and the financial community.  Such
a reputation and confidence are not easily gained and are among the most
precious assets of Seligman.  In large measure, they depend on the devotion and
integrity with which each Employee discharges his or her responsibilities.
Their preservation and development must be a main concern of each Employee, and
each Employee has a primary obligation to avoid any action or activity that
could produce conflict between the interest of the Clients and that Employee's
self-interest.

The purpose of this Code of Ethics ("Code") is to set forth the policies of
Seligman in the matter of conflicts of interest and to provide a formal record
for each Employee's reference and guidance.  This Code is also designed to
prevent any act, practice or course of business prohibited by the rules and
regulations governing our industry.

Each Employee owes a fiduciary duty to each Client.  Therefore, all Employees
must avoid activities, interests and relationships that might appear to
interfere with making decisions in the best interest of the Clients.

As an Employee, you must at all times:

1. Avoid serving your own personal interests ahead of the interests of Clients.
   You may not cause a Client to take action, or not to take action, for your
   personal benefit rather than the Client's benefit.

2. Avoid taking inappropriate advantage of your position.  The receipt of
   investment opportunities, perquisites or gifts from persons seeking business
   with Clients or with Seligman could call into question the exercise of your
   better judgment.  Therefore, you must not give or receive benefits that would
   compromise your ability to act in the best interest of the Clients.

3. Conduct all personal Securities Transactions in full compliance with the
   Code, including the pre-authorization and reporting requirements, and comply
   fully with the Seligman Insider Trading Policies and Procedures (See Appendix
   A).

While Seligman encourages you and your families to develop personal investment
programs, you must not take any action that could cause even the appearance that
an unfair or improper action has been taken.  Accordingly, you must follow the
policies set forth below with respect to trading in your Account(s).  This Code
places reliance on the good sense and judgment of you as an Employee; however,
if you are unclear as to the Code's meaning, you should seek the advice of the
Law and Regulation Department and assume the Code will be interpreted in the
most restrictive manner.  Questionable situations should be resolved in favor of
Clients.
<PAGE>

Technical compliance with the Code's procedures will not insulate from scrutiny
any trades that indicate a violation of your fiduciary duties.

Application of the Code to Disinterested Directors
- --------------------------------------------------

Disinterested Directors are only subject to the reporting requirements in
Section III.5(b) of the Code.  Disinterested Directors are not subject to other
provisions of the Code but are subject to the requirements of the federal
securities laws and other applicable laws, such as the prohibition on trading in
securities of an issuer while in possession of material non-public information.

                                II.  Definitions

      (a) "Accounts" means all Employee Accounts and Employee Related Accounts.

      (b) "Beneficial Interest" is broadly interpreted.  The SEC has said that
          the final determination of Beneficial Interest is a question to be
          determined in the light of the facts of each particular case.  The
          terms Employee Account and Employee Related Account, as defined below,
          generally define Beneficial Interest.  However, the meaning of
          "Beneficial Interest" may be broader than that described below. If
          there are any questions as to Beneficial Interest, please contact the
          Director of Compliance, General Counsel or Associate General Counsel.

          (i)  "Employee Account" means the following securities Accounts: (i)
               any of your personal account(s); (ii) any joint or tenant-in-
               common account in which you have an interest or are a
               participant; (iii) any account for which you act as trustee,
               executor, or custodian; (iv) any account over which you have
               investment discretion or otherwise can exercise control,
               including the accounts of entities controlled directly or
               indirectly by you; (v) any account in which you have a direct or
               indirect interest through a contract, arrangement or otherwise
               (e.g., economic, voting power, power to buy or sell, or
               otherwise); (vi) any account held by pledges, or for a
               partnership in which you are a member, or by a corporation which
               you should regard as a personal holding company; (vii) any
               account held in the name of another person in which you do not
               have benefits of ownership, but which you can vest or revest
               title in yourself at once or some future time; (viii) any account
               of which you have benefit of ownership; and (ix) accounts
               registered by custodians, brokers, executors or other fiduciaries
               for your benefit.

          (ii) "Employee Related Account" means any Account of (i) your spouse
               and minor children and (ii) any account of relatives or any other
               persons to whose support you materially contribute, directly or
               indirectly.

      (c) "Disinterested Director" means a director or trustee of a Seligman
          Registered Investment Company who is not an "interested person" of
          such investment company within the meaning of Section 2(a)(19) of
          the Investment Company Act of 1940.

      (d) "Equivalent Security" includes, among other things, an option to
          purchase or sell a Security or an instrument convertible or
          exchangeable into a Security.

      (e) "Investment Team" means one or more Investment Teams formed by the
          Manager in various investment disciplines to review and approve
          Securities for purchase and sale by Client Accounts.  This includes a
          team's leader, portfolio managers, research analysts, traders and
          their direct supervisors.

      (f) "Security" includes, among other things, stocks, notes, bonds,
          debentures, and other evidences of indebtedness (including loan
          participation and assignments), limited partnership interests,
          investment contracts, and all derivative instruments (e.g., options
          and warrants).
<PAGE>

    (g) "Securities Transaction" means a purchase or sale of a Security.

    (h) "Seligman Registered Investment Company" means an investment company
        registered under the Investment Company Act of 1940 for which Seligman
        serves as investment manager or adviser.

                      III. Personal Securities Transactions

1.  Prohibited Transactions
    -----------------------

    These apply to all of your Accounts.

    (a) Seven-Day Blackout: If you are a member of an Investment Team,
        -------------------
        Securities Transactions are prohibited within seven calendar days either
        before or after the purchase or sale of the relevant security (or an
        Equivalent Security) by a Client whose Account is managed by your
        Investment Team.

    (b) Intention to Buy or Sell for Clients: Securities Transactions are
        -------------------------------------
        prohibited at a time when you intend, or know of another's intention, to
        purchase or sell that Security (or an Equivalent Security) on behalf of
        a Client.

    (c) Sixty-Day Holding Period: Profits on Securities Transactions made within
        -------------------------
        a sixty-day period are prohibited and must be disgorged. This is a
        prohibition of short term trading. Specifically,

        .   Purchase of a Security within 60 days of your sale of the Security
            (or an Equivalent Security), at a price that is less than the price
            in the previous sale is prohibited.

        .   Sale of a Security within the 60 day period of your purchase of the
            Security (or an Equivalent Security), at a price that is greater
            than the price in the previous purchase is prohibited. Examples are
            as follows:

        1.  Employee purchases 100 shares of XYZ ($10 a share) on January 1.
            Employee sells 100 shares of XYZ ($15 a share) on February 15.
            Employee must disgorge $500.

        2.  Employee purchases 100 shares of XYZ ($10 a share) on January 1.
            Employee purchases 50 shares of XYZ ($12 a share) on January 30.
            Employee sells 50 shares of XYZ ($15 a share) on March 15. Employee
            must disgorge $150. (The March 15 sale may not be matched to the
            January 1 purchase).

        3.  Employee purchases 100 shares of XYZ ($10 a share) on January 1.
            Employee sells 100 shares of XYZ ($10 a share) on February 1.
            Employee purchases 100 shares of XYZ ($9 a share) on March 1
            Employee must disgorge $100. (The February 1 sale is permissible
            because no profit was made. However, the March 1 purchase is matched
            against the February 1 sale resulting in a $100 profit).

    (d) Restricted Transactions: Transactions in a Security are prohibited (i)
        ------------------------
        on the day of a purchase or sale of the Security by a Client, or (ii)
        anytime a Client's order in the Security is open on the trading desk.
        Other Securities may be restricted from time to time as deemed
        appropriate by the Law and Regulation Department.
<PAGE>

    (e) Short Sales: If you are a member of an Investment Team, you may not
        ------------
        engage in any short sale of a Security if, at the time of the
        transaction, any Client managed by your Team has a long position in that
        same Security. However, this prohibition does not prevent you from
        engaging short sales against the box and covered call writing, as long
        as these personal trades are in accordance with the sixty-day holding
        period described above.

    (f) Public Offerings: Acquisitions of Securities in initial and secondary
        ----------------
        public offerings are prohibited, unless granted an exemption by the
        Director of Compliance. An exemption for an initial public offering will
        only be granted in certain limited circumstances, for example, the
        demutualization of a savings bank.

    (g) Private Placements: Acquisition of Securities in a private placement is
        -------------------
        prohibited absent prior written approval by the Director of Compliance.

    (h) Market Manipulation: Transactions intended to raise, lower, or maintain
        --------------------
        the price of any Security or to create a false appearance of active
        trading are prohibited.

    (i) Inside Information: You may not trade, either personally or on behalf of
        -------------------
        others, on material, non-public information or communicate material,
        non- public information to another in violation of the law. This policy
        extends to activities within and outside your duties at Seligman. (See
        Appendix A).

2.  Maintenance of Accounts
    -----------------------

    All Accounts that have the ability to engage in Securities Transactions must
    be maintained at Ernst & Company (Investec) and/or the specific Merrill
    Lynch branch office located at 712 Fifth Avenue, New York, NY. You are
    required to notify the Director of Compliance of any change to your account
    status. This includes opening a new Account, converting, transferring or
    closing an existing account or acquiring Beneficial Interest in an Account
    through marriage or otherwise. You must place all orders for Securities
    Transactions in these Account(s) with the Equity Trading Desk or the
    appropriate Fixed Income Team as set forth in Section III.3 ("Trade
    Pre-authorization Requirements").

    The Director of Compliance may grant exceptions to the foregoing
    requirements on a case by case basis. All requests for exceptions must be
    applied for in writing and submitted for approval to the Director of
    Compliance and will be subject to certain conditions.

3.  Trade Pre-authorization Requirements
    ------------------------------------

    All Securities Transactions in an Employee Account or Employee Related
    Account must be pre-authorized, except for Securities Transactions set forth
    in Section III.4 ("Exempt Transactions").

    (a) Trade Authorization Request Form: Prior to entering an order for a
        ---------------------------------
        Securities Transaction in an Employee Account or Employee Related
        Account, which is subject to pre-authorization, you must complete a
        Trade Authorization Request Form (set forth in Appendix B) and submit
        the completed Form (faxed or hand delivered) to the Director of
        Compliance (or designee).

    (b) Review of the Form and Trade Execution: After receiving the completed
        ---------------------------------------
        Trade Authorization Request Form, the Director of Compliance (or
        designee) will review the information and, as soon as practical,
        determine whether to authorize the proposed Securities Transaction. The
        authorization, date and time of the authorization must be reflected on
        the Form. Once approved the order may then be executed by Equity Trading
        Desk or the appropriate Fixed Income Team, except for accounts for which
        an exemption was granted under Section III.2.
<PAGE>

    (c) Length of Trade Authorization Approval: Any authorization, if granted,
        ---------------------------------------
        is effective until the earliest of (i) its revocation, (ii) the close of
        business on the day from which authorization was granted or (iii) your
        discovery that the information in the Trade Authorization Request Form
        is no longer accurate. If the Securities Transaction was not placed or
        executed within that period, a new pre-authorization must be obtained. A
        new pre-authorization need not be obtained for orders which cannot be
        filled in one day due to an illiquid market, so long as such order was
        placed for execution on the day the original pre-authorization was
        given.

    No order for a Securities Transaction may be placed prior to the Director of
    Compliance (or designee) receiving the completed Trade Pre- authorization
    Form and approving the transaction. In some cases, trades may be rejected
    for a reason that is confidential.

4.  Exempt Transactions
    -------------------

    The prohibitions of this Code shall not apply to the following Securities
    Transactions in your Account(s):

    (a) Purchases or sales of Securities which are non-volitional (i.e., not
        involving any investment decision or recommendation).

    (b) Purchases of Securities through certain corporate actions (such as stock
        dividends, dividend reinvestments, stock splits, mergers,
        consolidations, spin-offs, or other similar corporate reorganizations or
        distributions generally applicable to all holders of the same class of
        Securities).

    (c) Purchases of Securities effected upon the exercise of rights issued by
        an issuer pro rata to all holders of a class of its Securities, to the
                  --------
        extent such rights were acquired from the issuer.

    (d) Purchases or sales of open-end registered investment companies, U.S.
        Government Securities and money market instruments (e.g., U.S. Treasury
        Securities, bankers acceptances, bank certificates of deposit,
        commercial paper and repurchase agreements).

    (e) Purchases of Securities which are part of an automatic dividend
        reinvestment plan or stock accumulation plan; however, quarterly account
        statement of such plans must be sent to the Director of Compliance.

    (f) Securities Transactions that are granted a prior exemption by the
        Director of Compliance, the General Counsel or the Associate General
        Counsel.

5.  Reporting
    ---------

    (a) You must arrange for the Director of Compliance to receive from the
        executing broker, dealer or bank duplicate copies of each confirmation
        and account statement for each Securities Transaction in an Employee
        Account or Employee Related Account.

    (b) If you are a Disinterested Director you are required to report the
        information specified below with respect to any Securities Transaction
        in any Securities Account in which you have Beneficial Interest, if you
        knew, or in the ordinary course of fulfilling your official duties as a
        Disinterested Director, should have known, that during 15 days
        immediately before or after the date of your transaction, the Security
        (or Equivalent Security) was purchased or sold by a Seligman Registered
        Investment Company or considered for purchase or sale by a Seligman
        Registered Investment Company. Such report shall be made not later than
        10 days after the end of the calendar quarter in which the Transaction
        was effected and shall contain the following information:
<PAGE>

        (i) The date of the transaction, the name of the company, the number of
            shares, and the principal amount of each Security involved;

        (ii) The nature of the transaction (i.e., purchase, sale or any other
             type of acquisition or disposition);

        (iii) The price at which the transaction was effected;

        (iv) The name of the broker, dealer or bank with or through whom the
             transaction was effected; and

        (v) The date the report is submitted.

    (c) You are required to disclose all Securities beneficially owned by you
        within ten days of commencement of employment and at the end of each
        calendar year within 10 days thereafter (See Appendix C).

    (d) You are also required to disclose all Employee and Employee Related
        Securities Accounts, Private Securities Transactions and Outside
        Activities, Affiliations and Investments upon commencement of employment
        and annually thereafter (See Appendix D).

    (e) Any report may contain a statement that the report shall not be
        construed as an admission by you, that you have any direct or indirect
        beneficial ownership in the Security to which the report relates.

    (f) The Director of Compliance or his designee will review all reports.

6.  Dealings with the Clients
    -------------------------

    You should not have any direct or indirect investment interest in the
    purchase or sale of any Security or property from or to Clients. This is a
    prohibition against dealings between you and the Clients and is not intended
    to preclude or limit investment transactions by you in Securities or
    property, provided such transactions are not in conflict with the provisions
    of this Code.

7.  Preferential Treatment, Favors and Gifts
    ----------------------------------------

    You are prohibited from giving and receiving gifts of significant value or
    cost from any person or entity that does business with or on behalf of any
    Client. You should also avoid preferential treatment, favors, gifts and
    entertainment which might, or might appear to, influence adversely or
    restrict the independent exercise of your best efforts and best judgments on
    behalf of the Clients or which might tend in any way to impair confidence in
    Seligman by Clients. Cash Gifts that do not exceed $100 in value per person
    for a calendar year are permissible. Ordinary courtesies of business life,
    or ordinary business entertainment, and gifts of inconsequential value are
    also permissible. However, they should not be so frequent nor so extensive
    as to raise any question of impropriety.

8.  Outside Business Activities and Service as a Director, Trustee or in a
    ----------------------------------------------------------------------
    Fiduciary Capacity of any Organization
    --------------------------------------

    You may not engage in any outside business activities or serve as a
    Director, Trustee or in a fiduciary capacity of any organization, without
    the prior written consent of the Director of Compliance.
<PAGE>

9.  Remedies of the Code
    --------------------

    Upon discovering a violation of this Code, sanctions may be imposed against
    the person concerned as may be deemed appropriate, including, among other
    things, a letter of censure, fines, suspension or termination of personal
    trading rights and/or employment.

    As part of any sanction, you may be required to absorb any loss from the
    trade. Any profits realized, as a result of your personal transaction that
    violates the Code must be disgorged to a charitable organization, which you
    may designate.

10. Compliance Certification
    ------------------------

    At least once a year, you will be required to certify on the Employee
    Certification Form (set forth in Appendix E) that you have read and
    understand this Code, that you have complied with the requirements of the
    Code, and that you have disclosed or reported all personal Securities
    Transactions pursuant to the provisions of the Code.

11. Inquiries Regarding the Code
    ----------------------------

    If you have any questions regarding this Code or any other compliance-
    related matter, please call the Director of Compliance, or in his absence,
    the General Counsel or Associate General Counsel.


                                                ________________________________
                                                        William C. Morris
                                                            Chairman


December 22, 1966
Revised:    March 8, 1968     December 7, 1990
            January 14, 1970  November 18, 1991
            March 21, 1975    April 1, 1993
            May 1, 1981       November 1, 1994
            May 1, 1982       February 28, 1995
            April 1, 1985     November 19, 1999*
            March 27, 1989

*Refers to the incorporation of the Code of Ethics of the Seligman Investment
 Companies originally adopted June 12, 1962, as amended.
<PAGE>

                                                                      Appendix A
                                                       Amended November 19, 1999

 J. & W. Seligman & Co. Incorporated - Insider Trading Policies and Procedures

SECTION I.  BACKGROUND

Introduction
- ------------

          United States law creates an affirmative duty on the part of broker-
dealers and investment advisers to establish, maintain and enforce written
policies and procedures that provide a reasonable and proper system of
supervision, surveillance and internal control to prevent the misuse of
material, non-public information by the broker-dealer, investment adviser or any
person associated with them.  The purpose of these procedures is to meet those
requirements.  The following procedures apply to J. & W. Seligman & Co.
Incorporated, its subsidiaries and affiliates (collectively, "Seligman") and all
officers, directors and employees (collectively, "Employees") thereof.

Statement of Policy
- -------------------

          No Employee may trade, either personally or on behalf of others, on
material, non-public information or communicate material, non-public information
to another in violation of the law.  This policy extends to activities within
and outside their duties at Seligman.  Each Employee must read, acknowledge
receipt and retain a copy of these procedures.

Inside Information
- ------------------

          The term "insider trading" is not defined in the federal securities
laws, but generally is used to refer to the use of material, non-public
information to trade in securities or to communicate material, non-public
information to others.

          While the law concerning insider trading is not static, it is
understood that the law generally prohibits:

          A.   trading by an insider, while in possession of material,
               non-public information, or

          B.   trading by a non-insider, while knowingly in possession of
               material, non-public information, where the information either
               was disclosed to the non-insider in violation of an insider's
               duty to keep it confidential or was misappropriated, or

          C.   communicating material, non-public information to others.

          The elements of insider trading and the penalties for such unlawful
conduct are discussed below. If you have any questions after reviewing these
procedures, you should consult the Director of Compliance, General Counsel or
Associate General Counsel.

1.        Who Is An Insider?
          ------------------

          The concept of "insider" is broad. It includes Employees of a company.
          In addition, a person can be a "temporary insider" if he or she enters
          into a special confidential relationship in the conduct of a company's
          affairs and as a result is given access to information solely for the
          company's purposes. A temporary insider can include, among others, a
          company's attorneys, accountants, consultants, bank lending officers,
          and the Employees of such organizations. In addition, Seligman may
          become a temporary insider of a company it advises or for which it
          performs other services. According to the Supreme Court, the company
          must expect the outsider to keep the disclosed non-public information
<PAGE>

          confidential and the relationship must at least imply such a duty
          before the outsider will be considered an insider.

2.        What Is Material Information?
          -----------------------------

          Trading on inside information is not a basis for liability unless the
          information is material. "Material information" generally is defined
          as information for which there is a substantial likelihood that a
          reasonable investor would consider it important in making his or her
          investment decisions, or information that is reasonably certain to
          have a substantial affect on the price of a company's securities.
          Information that Employees should consider material includes, but is
          not limited to: dividend changes, earnings estimates, changes in
          previously released earnings estimates, significant merger or
          acquisition proposals or agreements, major litigation, liquidation
          problems and extraordinary management developments. In addition,
          information about major contracts or new customers could also qualify
          as material, depending upon the importance of such developments to the
          company's financial condition or anticipated performance.

          Material information does not have to relate to a company's business.
          For example, in Carpenter v. U.S., 408 U.S. 316 (1987), the Supreme
                          -----------------
          Court considered as material certain information about the contents of
          a forthcoming newspaper column that was expected to affect the market
          price of a Security. In that case, a Wall Street Journal reporter was
                                               -------------------
          found criminally liable for disclosing to others the dates that
          reports on various companies would appear in the Journal and whether
                                                           -------
          those reports would be favorable or not.

3.        What Is Non-Public Information?
          -------------------------------

          Information is non-public until it has been effectively communicated
          to the market place. One must be able to point to some fact to show
          that the information is generally public. For example, information
          found in a report filed with the SEC, or appearing in Dow Jones,
                                                                ---------
          Reuters Economic Services, The Wall Street Journal or other
          -------------------------  -----------------------
          publications of general circulation would be considered public.
          However, see Section II, Paragraph 2.

4.        Penalties for Insider Trading
          -----------------------------

          Penalties for trading on or communicating material, non-public
          information are severe, both for individuals involved in such unlawful
          conduct and their employers. A person can be subject to some or all of
          the penalties below even if he or she does not personally benefit from
          the violation. Penalties include:

            -  Civil injunctions

            -  Disgorgement of profits

            -  Jail sentences

            -  Fines for the person who committed the violation of up to three
               times the profit gained or loss avoided, whether or not the
               person actually benefited, and

            -  Fines for the employer or other controlling person of up to the
               greater of $1,000,000 or three times the amount of the profit
               gained or loss avoided.

          In addition, any violation of policies and procedures set forth herein
can be expected to result in serious sanctions by Seligman, including dismissal
of the persons involved.
<PAGE>

SECTION II.  PROCEDURES

Procedures to Implement Policy Against Insider Trading.

    The following procedures have been established to assist the Employees of
Seligman in avoiding insider trading, and to aid Seligman in preventing,
detecting and imposing sanctions against insider trading.  Every Employee of
Seligman must follow these procedures or risk serious sanctions, including
dismissal, substantial personal liability and criminal penalties.  If you have
any questions about these procedures you should consult the Director of
Compliance, the General Counsel or Associate General Counsel.

1.  Identifying Inside Information.

    Before trading for yourself or others (including investment companies and
    private Accounts managed by Seligman), in the securities of a company about
    which you may have potential inside information, ask yourself the following
    questions:

    a. Is the information material?  Is this information that an investor would
       consider important in making his or her investment decisions?  Is this
       information that would substantially affect the market price of the
       securities if generally disclosed?

    b. Is the information non-public?  To whom has this information been
       provided?  Has the information been effectively communicated to the
       marketplace in a publication of general circulation or does it fall
       within the circumstances set forth in paragraph 2 below.

    If, after consideration of the above, you believe that the information is
material and non-public, or if you have questions as to whether the information
is material and non-public, you should take the following steps:

    c. Report the matter immediately to the Director of Compliance, General
       Counsel or Associate General Counsel.

    d. Do not purchase or sell the securities on behalf of yourself or others,
       including investment companies or private Accounts managed by Seligman.

    e. Do not communicate the information inside or outside Seligman other than
       to the Director of Compliance, General Counsel or Associate General
       Counsel.

    f. After the Director of Compliance, General Counsel or Associate General
       Counsel has reviewed the issue, you will be instructed to continue the
       prohibitions against trading and communication, or you will be allowed to
       trade and communicate the information.

2.  Important Specific Examples
    ---------------------------

    a.  If you have a telephone or face-to-face conversation with a senior
        executive of a publicly-traded company and are provided information
        about the company that you have reason to believe has not yet been
        disclosed in a widely-disseminated publication such as a press release,
        quarterly report or other public filing, you have received non-public
        information. This information is considered non- public even if you
        believe that the company executive would provide the same information to
        other analysts or portfolio managers who call the company. Until
        information has been disclosed in a manner that makes it available to
        (or capable of being accessed by) the investment community as a whole,
        it is considered non-public. If the information is material, as
        described above, you may not trade while in possession of this
        information unless you first discuss the matter and obtain approval from
        the Director of Compliance, General Counsel or Associate General
        Counsel. Although it may be lawful for an analyst to act on the basis of
        material information that the company's management has chosen to
        disclose selectively to that analyst, where the information is provided
        in a one-on-one context,
<PAGE>

        regulators are likely to question such conduct. Approval from the Law
        and Regulation Department will therefore depend on the specific
        circumstances of the information and the disclosure. Under the Supreme
        Court's important decision of Dirks v. SEC, 463 U.S. 646 (1983),
                                      ------------
        securities analysts may be free to act on selectively disclosed material
        information if it is provided by company executives exclusively to
        achieve proper corporate purposes.

    b.  If you obtain material information in the course of an analysts'
        conference call or meeting conducted by a publicly-traded company in the
        ordinary course of its business in which representatives of several
        other firms or investors are also present (as distinguished from the
        one-on-one situation described in the preceding paragraph), you may act
        on the basis of that information without need to consult with the
        Director of Compliance, General Counsel or Associate General Counsel,
        even if the information has not yet been published by the news media.
        You should be aware, however, that if there is something highly unusual
        about the meeting or conference call that leads you to question whether
        it has been authorized by the company or is otherwise suspect, you
        should first consult with the Director of Compliance, General Counsel or
        Associate General Counsel.

    c.  If you are provided material information by a company and are requested
        to keep such information confidential, you may not trade while in
        possession of that information before first obtaining the approval of
        the Director of Compliance, General Counsel or the Associate General
        Counsel.

    As these examples illustrate, the legal requirements governing insider
trading are not always obvious. You should therefore always consult with the
Director of Compliance, General Counsel or Associate General Counsel if you have
any question at all about the appropriateness of your proposed conduct.

3.  Restricting Access To Material, Non-Public Information
    ------------------------------------------------------

    Information in your possession that you identify as material and non-public
    may not be communicated to anyone, including persons within Seligman, except
    as provided in paragraphs 1 and 2 above.  In addition, care should be taken
    so that such information is secure.  For example, files containing material,
    non-public information should be sealed; access to computer files containing
    material, non-public information should be restricted.

4.  Resolving Issues Concerning Insider Trading
    -------------------------------------------

    If, after consideration of the items set forth in paragraphs 1 and 2, doubt
    remains as to whether information is material or non-public, or if there is
    any unresolved question as to the applicability or interpretation of the
    foregoing procedures, or as to the propriety of any action, it must be
    discussed with the Director of Compliance, General Counsel and or the
    Associate General Counsel before trading or communicating the information to
    anyone.

5.  Personal Securities Trading
    ---------------------------

    All Employees shall follow with respect to personal Securities trading the
    procedures set forth in the Code of Ethics.  In addition, no Employee shall
    establish a brokerage Account with a Firm other than those previously
    approved without the prior consent of the Director of Compliance and every
    Employee shall be subject to reporting requirements under Section III.5 of
    the Code of Ethics.  The Director of Compliance, or his designee, shall
    monitor the personal Securities trading of all Employees.
<PAGE>

                                                                      Appendix B
                                                       Amended November 19, 1999

                       J. & W. SELIGMAN & CO. INCORPORATED
                        TRADE AUTHORIZATION REQUEST FORM

<TABLE>
<S>    <C>
1.     Name of Employee/Telephone Number:                       ______________________________

2.     If different than #1, name of the person in whose
       account the trade will occur:                            ______________________________

3.     Relationship of (2) to (1):                              ______________________________

4.     Name the firm at which the account is held:              ______________________________

5.     Name of Security:                                        ______________________________

6.     Number of shares or units to be bought or
       sold or amount of bond:                                  ______________________________

7.     Approximate price per share, unit or bond:               ______________________________

8.     Check those that are applicable:                         _______  Purchase  ______ Sale

          _____  Market Order      ______  Limit Order (Price of Limit Order: _____)

9.     Do you possess material non public information regarding
       the Security or the issuer of the Security?                    ______ Yes       ______ No

10.    To your knowledge, are there any outstanding (purchase or
       sell) orders for this Security or any Equivalent Security by
       a Seligman Client?                                             ______ Yes       ______ No

11.    To your knowledge, is this Security or Equivalent Security
       being considered for purchase or sale for one or more
       Seligman Clients?                                              ______ Yes       ______ No

12.    Is this Security being acquired in an initial or secondary public
       offering?                                                      ______ Yes       ______ No

13.    Is this Security being acquired in a private placement?        ______ Yes       ______ No

14.    Have you or any Related Account covered by the pre-
       authorization provisions of the Code purchased or sold
       this Security within the past 60 days?                         ______ Yes       ______ No
</TABLE>
<PAGE>

   For Investment Team Members Only:
   ---------------------------------

15.  Has any Client Account managed by your team purchased or
     sold this Security or Equivalent Security within the past seven
     calendar days or do you expect any such account to purchase
     or sell this Security or Equivalent Security within seven
     calendar days of your purchase or sale?   ______ Yes  ______ No

16.  Why is this Security Transaction appropriate for you and not for one or
     more of your team's Clients?

     ___________________________________________________________________________

     ___________________________________________________________________________

     ___________________________________________________________________________

     ___________________________________________________________________________

     ___________________________________________________________________________

                                   - - - - - -


I have read the J. & W. Seligman & Co. Incorporated Code of Ethics, as revised
on November 19, 1999, within the prior 12 months and believe that the proposed
trade(s) fully complies with the requirements of the Code of Ethics and Insider
Trading policy.

                              ____________________________
                              Employee Signature

                              ____________________________
                              Date Submitted


Authorized by:  ________________________

Date:           ________________________
<PAGE>

                                                                      Appendix C
                                                       Amended November 19, 1999


                    REPORT OF SECURITIES BENEFICIALLY OWNED
                            AS OF DECEMBER 31, 1999


   The following is a list of all Securities positions (except open-end
investment companies, U.S. Government Securities and money market instruments)
in which I have direct or indirect beneficial ownership, as defined in the Code
of Ethics.  This includes Securities held at home, in safe deposit boxes or by
an issuer.

<TABLE>
<CAPTION>
Description of Security    No. of Shares  Principal Amount  Location of Security
<S>                        <C>            <C>               <C>

________________________   _____________  ________________  ____________________

________________________   _____________  ________________  ____________________

________________________   _____________  ________________  ____________________

________________________   _____________  ________________  ____________________

________________________   _____________  ________________  ____________________

________________________   _____________  ________________  ____________________

</TABLE>


_______     The list above (and any additional sheets I have attached)
            represents all my Securities positions in which I have direct or
            indirect beneficial ownership as defined in the Code of Ethics.

_______     I only have a beneficial ownership interest in open-end investment
            companies, U.S. Government Securities and money market instruments,
            and/or I do not beneficially own any Securities.



Date: ________________________                    _____________________________
                                                  First Last, Company
<PAGE>

                                                                      Appendix D
                                                       Amended November 19, 1999

                        EMPLOYEE REPORTING QUESTIONNAIRE
                        --------------------------------


Employee Name:  ___________________________  Ext:  _____  Department: __________
                       Please Print

Company/Affiliate:  ____________________________          Supervisor: __________

1.  Securities Accounts
    -------------------

    Do you have any Accounts in which Securities can be purchased or sold over
    which you have control or in which you have a Beneficial Interest, as
    defined in Seligman's Code of Ethics?

                                                      Yes _______    No ________

  If yes, please list all such Accounts:

                              Account           Account          Type of
      Institution             Number             Title           Account
      -----------             -------           -------          -------

_____________________   ___________________  _____________   ________________

_____________________   ___________________  _____________   ________________

_____________________   ___________________  _____________   ________________


2.  Financial Interests
    -------------------

    Do you have any private placements, restricted stock warrants, general or
    limited partnerships, or other investment interests in any organization
    (public, private or charitable) not held in the accounts listed above?
    Please include Securities and certificates held in your custody.

                                                         Yes _______  No _______

    If yes, please describe: ___________________________________________________

    ____________________________________________________________________________

3.  Outside Activities/Affiliations
    -------------------------------

    a)  Do you have any activities outside Seligman or its affiliates for which
        you receive additional compensation:

                                                         Yes _______  No _______

        If yes, please describe: _______________________________________________

        ________________________________________________________________________


    b)  Do you serve in the capacity of officer, director, partner or employee
        (or in any other fiduciary capacity) for any company or organization
        (public, private or charitable) other than Seligman or its affiliates.

                                                         Yes _______  No _______

        If yes, please describe: _______________________________________________

        ________________________________________________________________________


    I hereby certify that I have read and understand the foregoing statements
    and that each of my responses thereto are true and complete. I agree to
    immediately inform the Director of Compliance if there is any change in any
    of the above answers. I also understand that any misrepresentation or
    omissions of facts in response to this questionnaire and failure to
    immediately inform the Director of Compliance of any changes to responses
    provided herein may result in termination of my employment.

    ____________________________________     ___________________________________
    Employee's Signature                                    Date

    ____________________________________
    Title
<PAGE>

                                                                      Appendix E
                                                       Amended November 19, 1999


           Annual Certification of Compliance with the Code of Ethics
           ----------------------------------------------------------


    I acknowledge that I have received and read the Code of Ethics and Insider
Trading Policies and Procedures, as amended on November 19, 1999 and hereby
agree, in consideration of my continued employment by J. & W. Seligman & Co.
Incorporated, or one of its subsidiaries or affiliates, to comply with the Code
of Ethics and Insider Trading Policies and Procedures.

    I hereby certify that during the past calendar year:

1.  In accordance with the Code of Ethics, I have fully disclosed the Securities
    holdings in my Employee Account(s) and Employee Related Account(s) (as
    defined in the Code of Ethics).

2.  In accordance with the Code of Ethics, I have maintained all Employee
    Accounts and Employee Related Accounts at Ernst & Company (Investec) or
    Merrill Lynch located at 712 Fifth Avenue, New York, NY except for Accounts
    as to which the Director of Compliance has provided written permission to
    maintain elsewhere.

3.  In accordance with the Code of Ethics, except for transactions exempt from
    reporting under the Code of Ethics, I have arranged for the Director of
    Compliance to receive duplicate confirmations and statements for each
    Securities Transaction of all Employee Accounts and Employee Related
    Accounts, and I have reported all Securities Transactions in each of my
    Employee Accounts and Employee Related Accounts.

4.  I have complied with the Code of Ethics in all other respects.



                                    ________________________________
                                    Employee Signature

                                    ________________________________
Date:____________                   Print Name


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