SELIGMAN FRONTIER FUND INC
485APOS, 1998-11-10
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                       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. 24                            |X|
                                               --
         REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940     |X|

                  Amendment No. 26                                           |X|
                                --
- --------------------------------------------------------------------------------

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

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

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                 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 the
appropriate box).

|_|   immediately upon filing pursuant to paragraph (b) of rule 485

|_|   on     (date)                  pursuant to paragraph (b) of rule 485
         ---------------------------

|_|   60 days after filing pursuant to paragraph (a)(1) of rule 485

|X|   on January 20, 1999 pursuant to paragraph (a)(1) of rule 485
         ----------------

|_|   75 days after filing pursuant to paragraph (a)(2) of rule 485

|_|   on    (DATE)   pursuant to paragraph (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>

                                                                       SELIGMAN
                                                                     -----------
                                                                        Frontier
                                                                      Fund, Inc.

As with all mutual funds, 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
evaluated based on the investment objective, strategies and risks described
herein, 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.

EQFR1 2/99

                                   PROSPECTUS
                                 FEBRUARY 1, 1999

                                    ---------

                                 SEEKING GROWTH

                                IN CAPITAL VALUE

                               THROUGH INVESTMENTS

                                IN SMALL-COMPANY

                                 GROWTH STOCKS

                                   MANAGED BY


                                     [LOGO]

                             J. & W. SELIGMAN & CO.

                                  INCORPORATED

                                ESTABLISHED 1864



<PAGE>



TABLE OF CONTENTS

THE FUND

      INVESTMENT OBJECTIVE/PRINCIPAL STRATEGIES    1

      PRINCIPAL RISKS    2

      PAST PERFORMANCE    3

      FEES AND EXPENSES    4

      MANAGEMENT    5

      YEAR 2000    6

SHAREHOLDER INFORMATION

      DECIDING WHICH CLASS OF SHARES TO BUY    7

      PRICING OF FUND SHARES    9

      OPENING YOUR ACCOUNT    9

      HOW TO BUY ADDITIONAL SHARES    10

      HOW TO EXCHANGE SHARES BETWEEN
        THE SELIGMAN MUTUAL FUNDS    11

      HOW TO SELL SHARES    11

      IMPORTANT POLICIES THAT MAY AFFECT
        YOUR ACCOUNT    12

      DIVIDENDS AND CAPITAL GAIN DISTRIBUTIONS    13

      TAXES    13

      THE SELIGMAN MUTUAL FUNDS    14

FINANCIAL HIGHLIGHTS    15

HOW TO CONTACT US    17

FOR MORE INFORMATION    BACK COVER

TIMES CHANGE ... VALUES ENDURE



<PAGE>

THE FUND

INVESTMENT OBJECTIVE/PRINCIPAL STRATEGIES

The Fund seeks growth of capital. Income may be considered but is incidental to
the Fund's investment objective. The Fund uses the following strategies to
pursue its objective of growth of capital:

- --------------------------------------------------------------------------------
SMALL COMPANIES:
COMPANIES WITH MARKET CAPITALIZATIONS, AT THE TIME OF PURCHASE BY THE FUND, OF
$1.25 BILLION OR LESS.
- --------------------------------------------------------------------------------

The Fund generally invests at least 65% of its total assets in the common stock
of small US companies, selected for their growth prospects. Common stocks are
chosen for the Fund's portfolio using a bottom-up stock selection approach,
concentrating on individual company fundamentals rather than on a particular
market sector. The Fund maintains a disciplined investment process that focuses
on downside risks as well as upside potential. The Fund avoids "fad" stocks and
those it considers overly expensive or volatile. In selecting investments, the
manager looks to identify companies that display:

o Positive operating cash flows 
o Management ownership 
o A unique competitive advantage 
o Historically high returns on capital 

The Fund generally sells a stock if its target price is reached, its earnings
are disappointing, its revenue growth slows, or its underlying fundamentals
deteriorate. Although the Fund generally concentrates its investments in common
stocks, it may invest up to 35% of its assets in preferred stocks, securities
convertible into common stocks, and stock purchase warrants if the manager
believes they offer capital growth opportunities. The Fund may also invest in
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. ADRs are quoted and settled in USdollars. The Fund uses the
same criteria in evaluating these securities as it does for common stocks.

As a defensive measure, the Fund may also invest up to 35% of its total assets
in fixed-income securities issued or guaranteed by the US government (such as
treasury bills, notes and bonds), its agencies, instrumentalities, or
authorities; highly-rated corporate debt securities; and certificates of
deposit. The Fund would take this defensive position only temporarily in seeking
to minimize extreme volatility caused by adverse market, economic, or other
conditions or in anticipating significant withdrawals from the Fund. However,
such a position is inconsistent with the Fund's principal strategies and could
prevent the Fund from achieving its investment objective.

The Fund may invest up to 15% of its net assets in illiquid securities and up to
10% of its total assets in foreign securities which are held directly (which
does not include ADRs). The Fund may also purchase put options in an attempt to
hedge against a decline in the price of securities it holds in its portfolio.
The Fund generally does not invest a significant amount of its assets, if any,
in illiquid securities, foreign securities, or put options.

The Fund may change its principal strategies, including the definition of "small
company," if the Fund's Board of Directors believes doing so is consistent with
the Fund's objective of growth in capital.

As with any mutual fund, there is no guarantee the Fund will achieve its
objective.

                                       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.

Small-company stocks, as a whole, may experience larger price fluctuations than
large-company stocks or other types of investments. Small companies tend to have
shorter operating histories and may have less experienced management. During
periods of investor uncertainty, investor sentiment may favor larger, well-known
companies over small, lesser-known companies.

The Fund seeks to reduce the risks of investing in small company stocks by
adhering to its disciplined investment process, and by diversifying its
investments typically among more than 100 stocks and avoiding concentration in
any one industry. The Fund may, however, invest more heavily in certain
industries believed to offer good investment opportunities. To the extent that
an industry in which the Fund is invested falls out of favor, the Fund's
performance may be negatively affected.

The Fund may also be negatively 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.

To the extent that the Fund invests some of its assets in higher-risk
securities, such as illiquid securities, foreign securities, or options, it may
be subject to higher price volatility.

The Fund may actively and frequently trade stocks in its portfolio to carry out
its principal strategies. A high portfolio turnover rate results in
correspondingly greater transaction costs and a possible increase in short-term
capital gains and losses. This may increase the Fund's expenses and it may have
tax consequences for investors in the Fund.

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 three 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 each Class's
performance compares to three widely-used measures of small company stock
performance.

Although the Fund's fiscal year ends on September 30, the following performance
information is provided on a calendar year basis 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 less. 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 - Calendar Years



1989      28.1%
1990      -9.1%
1991      49.6%
1992      15.9%
1993      26.3%
1994       7.0%
1995      36.4%
1996      11.3%
1997      17.8%
1998



Best quarterly return: XX.X% - quarter ended ____
Worst quarterly return: XX.X% - quarter ended ____

              Average Annual Total Returns - Periods Ended 12/31/98

<TABLE>
<CAPTION>
                                                                               Class B                 Class D
                                         One        Five        Ten        Since Inception         Since Inception
                                        Year        Years      Years           4/22/96                 5/3/93
                                       -------     -------    -------    -------------------     -------------------
<S>                                                                              <C>                    <C>
Class A
Class B
CLASS D
Russell 2000 Growth Index                                                        (1)                    (2)
Russell 2000 Index                                                               (1)                    (2)
Lipper Small Cap Funds Average                                                   (1)                    (2)

The Russell 2000 Growth Index, Russell 2000 Index, and the Lipper Small Cap
Funds Average are unmanaged benchmarks that assume the reinvestment of dividends
and capital gain distributions. The Lipper Average does not reflect any sales
charges and the Russell Indices do not reflect any fees or sales charges. The
Russell 2000 Index measures the performance of small-cap stocks, the Russell
2000 Growth Index measures the performance of small-cap growth stocks, and the
Lipper Average measures the performance of mutual funds with investment
objectives similar to the Fund.
(1) From April 30, 1996.
(2) From April 30, 1993.

</TABLE>

                                       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 you. 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 D
- ----------------                                                                    ------       ------       ------
<S>                                                                                  <C>          <C>          <C>
Maximum Sales Charge (Load) on Purchases
  (as a % of offering price) .....................................................   4.75%         none         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*          5%           1%

Annual Fund Operating Expenses for Fiscal Year 1998
- ---------------------------------------------------
(as a percentage of average net assets)

Management Fees ..................................................................    .93%         .93%         .93%
Distribution and/or Service (12b-1) Fees .........................................    .23%        1.00%        1.00%
Other Expenses ...................................................................    .31%         .31%         .31%
                                                                                     -----        -----        -----
Total Annual Fund Operating Expenses .............................................   1.47%        2.24%        2.24%
                                                                                     =====        =====        =====

</TABLE>
* If you buy Class A shares for $1,000,000 or more you do 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 Securities
and Exchange Commission Rule 12b-1 that allows the 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, and 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:

                      1 Year        3 Years      5 Years     10 Years
                       -----        -------      -------      -------
Class A                $617         $ 918        $1,240        $2,149
Class B                 727         1,000         1,400         2,381+
Class D                 327           700         1,200         2,575

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



                      1 Year        3 Years      5 Years     10 Years
                       -----        -------      -------      -------
Class A                $617          $918        $1,240        $2,149
Class B                 227           700         1,200         2,381+
Class D                 227           700         1,200         2,575

+ 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.

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

Established in 1864, Seligman currently serves as manager to 18 investment
companies, which offer more than 50 investment portfolios with approximately
$XX.X billion in assets as of December 31, 1998. Seligman also provides
investment management or advice to institutional or other accounts having an
aggregate value at December 31, 1998, of approximately $XX.X 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 .95% of the
Fund's average daily net assets on the first $750 million of net assets and .85%
of the Fund's average daily net assets in excess of $750 million. The fee paid
by the Fund to Seligman for the Fund's fiscal year ended September 30, 1998, was
equal to an annual rate of .93% of the Fund's average daily net assets.

- --------------------------------------------------------------------------------
AFFILIATES OF SELIGMAN:

SELIGMAN ADVISORS, INC. (SELIGMAN ADVISORS):

THE FUND'S GENERAL DISTRIBUTOR; RESPONSIBLE FOR ACCEPTING ORDERS FOR PURCHASES
AND SALES OF FUND SHARES.

SELIGMAN SERVICES, INC. (SSI):

A LIMITED PURPOSE BROKER/DEALER; ACTS AS THE BROKER/DEALER OF RECORD FOR
SHAREHOLDER ACCOUNTS THAT DO NOT HAVE A DESIGNATED FINANCIAL ADVISOR.

SELIGMAN DATA CORP. (SDC):

THE FUND'S SHAREHOLDER SERVICE AGENT; PROVIDES SHAREHOLDER ACCOUNT SERVICES TO
THE FUND AT COST.
- --------------------------------------------------------------------------------

The Fund is managed by the Seligman Small Company Team, headed by Arsen
Mrakovcic. Mr. Mrakovcic, a Managing Director of Seligman, has been Vice
President and Portfolio Manager of the Fund since October 1, 1995. Mr. Mrakovcic
joined Seligman in June 1992 as a Portfolio Assistant. He was named Vice
President, Investment Officer on January 1, 1995, and Managing Director on
January 1, 1996. Mr. Mrakovcic also co-manages Seligman Henderson Global Smaller
Companies Fund; and manages the Seligman Frontier Portfolio and co-manages the
Seligman Henderson Global Smaller Companies Portfolio, two portfolios of
Seligman Portfolios, Inc.

                                       5

<PAGE>

YEAR 2000

As the millennium approaches, mutual funds, financial and business
organizations, and individuals could be adversely affected if their computer
systems do not properly process and calculate date-related information and data
on and after January 1, 2000. Like other mutual funds, the Fund relies upon
service providers and their computer systems for its day-to-day operations. Many
of the Fund's service providers in turn depend upon computer systems of their
vendors. Seligman and SDC have established a year 2000 project team. The team's
purpose is to assess the state of readiness of Seligman and SDC and the Fund's
other service providers and vendors. The team is comprised of several
information technology and business professionals as well as outside
consultants. The Project Manager of the team reports directly to the
Administrative Committee of Seligman. The Project Manager and other members of
the team also report to the Board of Directors of the Fund and its Audit 
Committee.

The team has identified the service providers and vendors who furnish critical
services or software systems to the Fund, including firms with which the Fund
trades and firms responsible for shareholder account recordkeeping. The team is
working with these critical service providers and vendors to evaluate the impact
year 2000 issues may have on their ability to provide uninterrupted services to
the Fund. The team will assess the feasibility of their year 2000 plans. The
team has made progress on its year 2000 contingency plans - recovery efforts the
team will employ in the event that year 2000 issues adversely affect the Fund.
The team anticipates finalizing these plans in the near future.

The Fund anticipates the team will implement all significant components of the
team's year 2000 plans by mid-1999, including appropriate testing of critical
systems and receipt of satisfactory assurances from critical service providers
and vendors regarding their year 2000 compliance. The Fund believes that the
critical systems on which it relies will function properly on and after the year
2000, but this is not guaranteed. If these systems do not function properly, or
the Fund's critical service providers are not successful in implementing their
year 2000 plans, the Fund's operations may be adversely affected, including
pricing and securities trading and settlement, and the provision of shareholder
services.

In addition, the Fund may hold securities of issuers whose underlying business
leaves them susceptible to year 2000 issues. The Fund may also hold securities
issued by governmental or quasi-governmental issuers, which, like other
organizations, are also susceptible to year 2000 concerns. Year 2000 issues may
affect an issuer's operations, creditworthiness, and ability to make timely
payment on any indebtedness and could have an adverse impact on the value of its
securities. If the Fund holds these securities, the Fund's performance could be
negatively affected. Seligman seeks to identify an issuer's state of year 2000
readiness as part of the research it employs. However, the perception of an
issuer's year 2000 preparedness is only one of the many factors considered in
determining whether to buy, sell, or continue to hold a security. Information
provided by issuers concerning their state of readiness may or may not be
accurate or readily available.

SDC has informed the Fund that it does not expect the cost of its services to
increase materially as a result of the modifications to its computer systems
necessary to prepare for the year 2000. The Fund will not pay to remediate the
systems of Seligman or bear directly the costs to remediate the systems of any
other service providers or vendors, other than SDC.

                                       6

<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 is
subject to different ongoing 12b-1 fees. When deciding which Class of shares to
buy, you should consider, among other things:

   o  The amount you plan to invest.

   o  How long you intend to remain invested in the Fund, or another Seligman
      mutual fund.

   o  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.

   o  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
   o  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.

   o  Annual 12b-1 fee (for shareholder services) of up to 0.25%.
   o  No sales charge on reinvested dividends or capital gain distributions.

- --------------------------------------------------------------------------------
Your purchase of Class B shares must be less than $250,000, because if you
are investing $250,000 or more you will pay less in fees and charges if you
buy Class A or Class D shares.
- --------------------------------------------------------------------------------

Class B

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

   o Annual 12b-1 fee (for distribution and shareholder services) of 1.00%.

   o Automatic conversion to Class A shares after eight years, resulting in
     lower ongoing 12b-1 fees. 
   o No CDSC on redemptions of shares purchased with  reinvested dividends or
     capital gain distributions.
- --------------------------------------------------------------------------------
                                       7

<PAGE>

CLASS D

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

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, 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 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 any of the
other Seligman mutual funds. For the purpose of calculating the CDSC when you
sell your shares, it will be assumed that you held the shares since the date of
your original purchase in the Fund.

                                       8
<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. Purchase or sale
orders received by an authorized dealer 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. If your order is received by a dealer
after the close of regular trading on the NYSE, or is accepted by Seligman
Advisors after the close of business, the order will be executed at the Class's
NAV calculated as of the close of regular trading on the next NYSE trading day.
When you sell shares, you receive the Class's per share NAV, less any applicable
CDSC.

The NAV of the Fund's shares is determined each day, Monday through Friday, on 
days that the NYSE is open for trading. Because of their higher 12b-1 fees, 
the NAV of Class B and Class D shares will generally be lower than the NAV
of Class A shares.

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. 

- --------------------------------------------------------------------------------
NAV: computed separately for each class by dividing that class's share of the
net assets of the fund (i.e., its assets less liabilities) by the total number
of outstanding shares of the class.
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
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.
- --------------------------------------------------------------------------------
          
OPENING YOUR ACCOUNT

The Fund's shares are sold through authorized financial advisors who have sales
agreements with Seligman Advisors. There are several programs under which you
may be eligible for reduced sales charges. Ask your financial advisor if any of
these programs apply to you.

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 buy shares by check and
subsequently sell the shares, SDC will not send your proceeds until 15 calendar
days have elapsed from the date of your purchase to ensure your check clears.

The required minimum initial investments are:

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

         o 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 will be sent a statement confirming your Fund purchase, and any subsequent
transactions in your account. You will receive a consolidated statement at the
close of each calendar quarter detailing transactions in the Fund and all 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.

                                       9

<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. 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. Your investment will be made in the Class you already
own. Send investment checks to:
                 Seligman Data Corp.
                 P.O. Box 9766
                 Providence, RI 02940-5051

Your check must be in US dollars and be drawn on a US bank. Third party and
credit card convenience checks can not be used 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, 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 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 frames 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 HARVESTER. 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.

                                       10
<PAGE>



HOW TO EXCHANGE SHARES BETWEEN 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 of
Seligman Cash Management Fund to buy Class A shares 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 any other account options to be carried over 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), which you should
read and understand before investing.

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." 

Generally, 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 always send a written request to sell Fund shares. It may take longer to
get your money if you send your request by mail. 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
                                      all account owners, 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:

   o a corporation; o an executor or administrator; 
   o a trustee or custodian; or
   o 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 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 or Class D shares and
reinvest your dividends and capital gain distributions, you may withdraw 12% or
10%, respectively, of the value of your Fund account (at the time of election)
annually without a CDSC.

                                       11

<PAGE>


IMPORTANT POLICIES THAT MAY AFFECT YOUR ACCOUNT

To protect you and other shareholders, the Fund reserves the right to:
   o  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.
   o  Refuse any request to buy Fund shares.
   o  Reject any request received by telephone.
   o  Suspend or terminate telephone services.
   o  Reject a signature guarantee that SDC believes may be fraudulent.
   o  Close your account if its value falls below $500.
   o  Close your account if it does not have a certified taxpayer identification
      number.

TELEPHONE SERVICES

You and your 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:

   o Sale of uncertificated shares (up to $50,000 per day)
   o Exchanges 
   o Dividend and/or capital gain distribution option changes
   o Address changes
   o 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.

Restrictions apply to certain types of accounts:
   o  Trust accounts on which the current trustee is not listed may not sell 
      Fund shares by phone.
   o  Corporations may not sell Fund shares by phone.
   o  IRAs may only exchange Fund shares or request address changes by phone.
   o  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
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.


                                       12

<PAGE>

DIVIDENDS AND CAPITAL GAIN DISTRIBUTIONS

The Fund generally pays any dividends from its net investment income and
distributes net capital gains realized on investments annually. It is expected
that the Fund's distributions will be primarily capital gains.

- --------------------------------------------------------------------------------
DIVIDEND:

A PAYMENT BY A MUTUAL FUND, USUALLY DERIVED FROM THE FUND'S NET INVESTMENT
INCOME (DIVIDENDS AND INTEREST EARNED ON PORTFOLIO SECURITIES LESS EXPENSES).

CAPITAL GAIN DISTRIBUTION:

A PAYMENT TO MUTUAL FUND SHAREHOLDERS WHICH REPRESENTS PROFITS REALIZED ON THE
SALE OF SECURITIES IN A FUND'S PORTFOLIO.

EX-DIVIDEND DATE:

THE DAY ON WHICH ANY DECLARED DISTRIBUTIONS (DIVIDENDS OR CAPITAL GAINS) ARE
DEDUCTED FROM A FUND'S ASSETS BEFORE IT CALCULATES ITS NAV.
- --------------------------------------------------------------------------------

Shareholders may elect to:

(1) reinvest both dividends and capital gain distributions;

(2) take dividends in cash and reinvest capital gain distributions; or

(3) take both dividends and capital gain distributions in cash.

Your dividends and capital gain distributions will be reinvested if you do
not instruct otherwise or if you own Fund shares in a prototype retirement
plan.

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.

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.

Dividends on Class B and Class D shares will be lower than the dividends on
Class A shares as a result of their higher 12b-1 fees. Capital gain
distributions will be paid in the same amount for each Class.

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.

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.

Capital gains distributed by the Fund may be taxed at different rates depending
on the length of time the Fund holds its assets.

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.


                                       13

<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 Henderson
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 HENDERSON EMERGING MARKETS GROWTH FUND
Seeks long-term capital appreciation by investing primarily in equity securities
of companies in emerging markets.

SMALL COMPANY
- --------------------------------------------------------------------------------
SELIGMAN FRONTIER FUND
Seeks to maximize capital appreciation 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 HENDERSON 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 HENDERSON GLOBAL GROWTH OPPORTUNITIES 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 HENDERSON INTERNATIONAL 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 SERIES
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 Series 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, free from regular federal income taxes.
STATE-SPECIFIC FUNDS:
Seek to maximize income free from regular federal income taxes and from income
taxes in the designated state.

California        Louisiana          New Jersey
 oHigh-Yield      Maryland           New York
 oQuality         Massachusetts      North Carolina
Colorado          Michigan           Ohio
Florida           Minnesota          Oregon
Georgia           Missouri           Pennsylvania
                                     South Carolina

* 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.

                                       14

<PAGE>

FINANCIAL HIGHLIGHTS

The tables below are intended to help you understand each Class's financial
performance 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 Class share held throughout the periods shown. "Total return" shows how
much 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. , 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.

CLASS A
<TABLE>
<CAPTION>

                                                                      Year ended September 30,
                                                   ---------------------------------------------------------------
                                                   1998           1997           1996           1995         1994
                                                   -----          -----          -----          -----         -----
<S>                                               <C>            <C>           <C>             <C>           <C>
Per Share Data*:
Net asset value, beginning of year .............  $17.55         $15.38         $14.04         $11.62        $12.83
                                                   -----          -----          -----          -----         -----
Investment operations:
  Net investment loss ..........................   (0.16)         (0.16)         (0.13)         (0.06)         (0.08)
  Net realized and unrealized
    gain (loss) on investments .................   (3.32)          3.20           1.95           3.87          1.10
                                                   -----          -----          -----          -----         -----
Total from investment operations ...............   (3.48)          3.04           1.82           3.81          1.02
Less distributions:
  Distributions from net realized
    capital gains ..............................   (1.63)         (0.87)         (0.48)         (1.39)        (2.23)
                                                   -----          -----          -----          -----         -----
Total distributions ............................   (1.63)         (0.87)         (0.48)         (1.39)        (2.23)
                                                   -----          -----          -----          -----         -----
Net asset value, end of period .................   12.44         $17.55         $15.38         $14.04        $11.62
                                                   =====          =====          =====          =====         =====
Total return ...................................(21.32)%         21.19%         13.40%         36.80%         9.79%

Ratios/Supplemental Data:

Net assets, end of year (000s omitted) .........$379,945       $568,261       $523,737       $272,122       $58,478
Ratio of expenses to average net assets ........   1.47%          1.52%          1.56%          1.43%         1.34%
Ratio of net investment loss to average
  net assets ................................... (1.05)%        (1.10)%        (0.91)%        (0.50)%       (0.87)%
Portfolio turnover rate ........................  83.90%         97.37%         59.36%         71.52%       124.76%

- ----------------
  * Per share amounts are calculated based on average shares outstanding.
</TABLE>

                                       15
<PAGE>


<TABLE>
<CAPTION>

CLASS B                                                Year ended              4/22/96**
                                                      September 30,               to
                                                   --------------------
                                                   1998           1997          9/30/96
                                                   -----          -----         ------
PER SHARE DATA*:
<S>                                               <C>             <C>           <C>   
NET ASSET VALUE, BEGINNING OF PERIOD ..........   $16.68          $14.78        $14.55
                                                  ------          ------        ------
Investment operations:
  Net investment loss .........................    (0.27)         (0.27)         (0.11)
  Net realized and unrealized
    gain (loss) on investments ................    (3.12)          3.04           0.34
                                                   -----          -----          -----
Total from investment operations ..............    (3.39)          2.77           0.23
Less Distributions:
  Distributions from net realized
    capital gains .............................    (1.63)         (0.87)            --
                                                   -----          -----          -----
Total distributions ...........................    (1.63)         (0.87)            --
                                                   -----          -----          -----
Net asset value, end of period ................   $11.66         $16.68         $14.78
                                                   =====          =====          =====
Total return .................................. (21.95)%         20.17%          1.58%+
RATIOS/SUPPLEMENTAL DATA:
Net assets, end of period (000s omitted) ......  $67,199        $69,869        $24,016
Ratio of expenses to average net assets .......    2.24%          2.25%          2.45%++
Ratio of net investment loss to average
  net assets ..................................  (1.82)%        (1.88)%        (1.80)%++
Portfolio turnover rate .......................   83.90%         97.37%         59.36%+++

- ----------------------
  * Per share amounts are calculated based on average shares outstanding.
 ** Commencement of offering of shares.
  + Not Annualized.
 ++ Annualized.
+++ For the year ended September 30, 1996.

</TABLE>



<TABLE>
<CAPTION>

                                                                       Year ended September 30,
                                                   ----------------------------------------------------------------
CLASS D                                            1998           1997           1996           1995         1994
                                                   -----          -----          -----          -----         -----
PER SHARE DATA*:
<S>                                               <C>            <C>            <C>            <C>           <C>   
Net asset value, beginning of year .............  $16.69         $14.77         $13.61         $11.40        $12.80
                                                   -----          -----          -----          -----         -----
Investment operations:
  Net investment loss ..........................   (0.27)         (0.27)         (0.24)         (0.15)        (0.23)
  Net realized and unrealized
    gain (loss) on investments .................   (3.12)          3.06           1.88           3.75          1.06
                                                   -----          -----          -----          -----         -----
Total from investment operations ...............   (3.39)          2.79           1.64           3.60          0.83
Less Distributions:
  Distributions from net realized
    capital gains ..............................   (1.63)         (0.87)         (0.48)         (1.39)        (2.23)
                                                   -----          -----          -----          -----         -----
Total distributions ............................   (1.63)         (0.87)         (0.48)         (1.39)        (2.23)
                                                   -----          -----          -----          -----         -----
Net asset value, end of period .................  $11.67         $16.69         $14.77         $13.61        $11.40
                                                   =====          =====          =====          =====         =====
Total return ...................................(21.94)%         20.32%         12.47%         35.53%        8.06%
RATIOS/SUPPLEMENTAL DATA:
Net assets, end of period (000s omitted) .......$263,900       $390,904       $337,327       $145,443        $9,318
Ratio of expenses to average net assets ........   2.24%          2.30%          2.35%          2.29%         2.72%
Ratio of net investment loss to average
  net assets ................................... (1.82)%        (1.88)%        (1.70)%        (1.35)%      (2.25)%
Portfolio turnover rate ........................  83.90%         97.37%         59.36%         71.52%       124.76%

- --------------------
  * Per share amounts are calculated based on average shares outstanding.

</TABLE>




                                       16
<PAGE>

HOW TO CONTACT US
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

- --------------------------------------------------------------------------------
24-hour 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.

STATEMENT OF ADDITIONAL INFORMATION (SAI) CONTAINS ADDITIONAL INFORMATION ABOUT
THE FUND. IT IS ON FILE WITH THE SECURITIES AND EXCHANGE COMMISSION (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

                                     [LOGO]

                              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 (800) SEC-0330. The SAI,
Annual/Semi-Annual reports and other information about the Fund are also
available on the SEC's Internet site: http://www.sec.gov.

Copies of this information may be obtained, upon payment of a duplicating fee,
by writing: Public Reference Section of the SEC, Washington, DC 20549-6009.

SEC FILE NUMBER:  811-4078


<PAGE>


                          SELIGMAN FRONTIER FUND, INC.

                       Statement of Additional Information
                                February 1, 1999

                                 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 Frontier Fund, Inc.,
dated February 1, 1999. 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 ...............................................  5
Control Persons and Principal Holders of Securities...................  10
Investment Advisory and Other Services ...............................  10
Brokerage Allocation and Other Practices .............................  15
Capital Stock and Other Securities ...................................  16
Purchase, Redemption, and Pricing of  Shares .........................  16
Taxation of the Fund .................................................  21
Underwriters..........................................................  22
Calculation of Performance Data ......................................  24
Financial Statements..................................................  26
Appendix .............................................................  27




<PAGE>



                                  FUND HISTORY

The Fund was incorporated under the laws of the state of Maryland on July 9,
1984.

              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.

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, acting pursuant to procedures
approved by 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 this determination be made, the Fund, acting
pursuant to such procedures, 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.

FOREIGN SECURITIES. The Fund may invest in commercial paper and certificates of
deposit issued by foreign banks and may invest directly and through American
Depositary Receipts (ADRs) in other securities of foreign issuers. Foreign
investments may be affected favorably or unfavorably by changes in currency
rates and exchange control regulation. There may be less information available
about a foreign company than about a U.S. company and foreign companies may not
be subject to reporting standards and requirements comparable to those
applicable to U.S. companies. Foreign securities may not be as liquid as U.S.
securities. Securities of foreign companies may involve greater market risk than
securities of U.S. companies, and foreign brokerage commissions and custody fees
are generally higher than those in United States. Investments in foreign
securities may also be subject to local economic or political risks, political
instability and possible nationalization of issuers. ADRs, which are traded in
dollars on U.S. Exchanges or over-the-counter, are issued by domestic banks and
evidence ownership of securities issued by foreign corporations. 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
ADRs or to commercial paper and certificates of deposit issued by foreign banks.

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 money
market instrument, generally a U.S. Government obligation, subject to resale at
an agreed upon price and date. The resale price reflects and agreed upon
interest rate effective for the period of time the instrument is held by the
Fund. 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. The Fund 


                                       2

<PAGE>

will not enter into repurchase agreements of more than one week's duration if
more than 10% of its net assets would be invested in such agreements and other
illiquid securities.

BORROWING. The Fund may borrow money only from banks and only for temporary or
emergency purposes (but not for the purchase of portfolio securities) in an
amount not in excess of 15% of the value of its total assets. The Fund will not
purchase additional portfolio securities if the Fund has outstanding borrowings
in excess of 5% of the value of its total assets.

OPTIONS TRANSACTIONS. The Fund may purchase put options on portfolio securities
in an attempt to provide a hedge against a decrease in the price of a security
held by the Fund. The Fund will not purchase options for speculative purposes.

Purchasing a put option gives the Fund the right to sell, and obligates the
writer to buy, the underlying security at the exercise price at any time during
the option period. This hedge protection is provided during the life of the put
option since the Fund, as holder of the put option, can sell the underlying
security at the put exercise price regardless of any decline in the underlying
security's market price. In order for a put option to be profitable, the market
price of the underlying security must decline sufficiently below the exercise
price to cover the premium and transaction costs. By using put options in this
manner, the Fund will reduce any profit it might otherwise have realized in the
underlying security by the premium paid for the put option and by transaction
costs.

Because a purchased put option gives the purchaser a right and not an
obligation, the purchaser is not required to exercise the option. If the
underlying position incurs a gain, the Fund would let the option expire
resulting in a reduced profit on the underlying security equal to the cost of
the put option.

When the Fund purchases an option, it is required to pay a premium to the party
writing the option and a commission to the broker selling the option. If the
option is exercised by the Fund, the premium and the commission paid may be
greater than the amount of the brokerage commission charged if the security were
to be purchased or sold directly. The cost of the put option is limited to the
premium plus commission paid. The Fund's maximum financial exposure will be
limited to these costs.

The Fund's ability to engage in option transactions may be limited by tax
considerations.

RIGHTS AND WARRANTS. The Fund may invest in common stock rights and warrants
believed by the 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 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 dividend or interest paid on the securities. The Fund
may invest the cash 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 cash or equivalent collateral to the borrower or placing broker.
The Fund does not have the right to vote securities on loan, but would terminate
the loan and regain the right to vote if that were considered important with
respect to the investment.


                                       3

<PAGE>

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:

o  Borrow money, except from banks for temporary or emergency purposes (but not
   for the purchase of portfolio securities) in an amount not to exceed 15% of
   the value of its total assets. The Fund will not purchase additional
   portfolio securities if the Fund has outstanding borrowings in excess of 5%
   of the value of its total assets;

o  Purchase securities on "margin," or sell "short", or write or purchase put,
   call, straddle or spread options, except that the Fund may make margin
   deposits on future contracts, and may purchase put options solely for the
   purpose of hedging against a decline in the price of securities held in the
   Fund's portfolio;

o  Invest more than 5% of its total assets, at market value, in securities of
   any one issuer other than the U.S. Government, its agencies or
   instrumentalities, buy more than 10% of the voting securities of any issuer,
   or invest to control or manage any company;

o  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;

o  Invest more than 25% of the value of its total assets in any one industry;

o  Invest in securities issued by other investment companies, except in
   connection with a merger, consolidation, acquisition or reorganization;

o  Purchase or sell commodities and commodity contracts other than stock index
   futures contracts or purchase or hold real estate;

o  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 issuer own in the aggregate more than 5% of such
   securities;

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

o  Make loans, except loans of portfolio securities (which loans would be fully
   collateralized and marked to market daily) and except to the extent the
   purchase of notes, bonds or other evidences of indebtedness, or the entry
   into repurchase agreements may be considered loans.

o  Invest more than 5% of the value of its net assets, valued at the lower of
   cost or market, in warrants, of which no more than 2% of net assets may be
   invested in warrants not listed on the New York or American Stock Exchanges.

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

                                       4

<PAGE>


Under the Investment Company Act of 1940 (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.

PORTFOLIO TURNOVER

The Fund's portfolio turnover rate is calculated by dividing the lesser of
purchases or sales of portfolio securities for the fiscal year by the monthly
average of the value of the portfolio securities owned during the fiscal 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 fiscal years ended September 30, 1998 and 1997 were 83.90% and
97.37%, respectively.

TEMPORARY DEFENSIVE POSITION

In an attempt to respond to adverse market, economic, political, or other
conditions, the Fund may invest up to 35% of its total assets in fixed-income
securities issued or guaranteed by the U.S. Government (such as treasury bills,
notes, and bonds), its agencies, instrumentalities, or authorities; highly-rated
corporate debt securities and certificates of deposit, or hold cash. The Fund
would take this defensive position only temporarily in seeking to minimize
extreme volatility caused by adverse market, economic or other conditions or in
anticipating significant withdrawals from the Fund. Such a position is
inconsistent with the Fund's principal strategies and could result in the Fund
not achieving its investment objective.

                             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.

<TABLE>
<CAPTION>
             Name,                                                                     Principal
           (Age) and                   Positions(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,
             (60)                Board, Chief Executive          Chairman and Chief Executive Officer, the Seligman
                                 Officer and Chairman of the     Group of investment companies; Chairman, Seligman
                                 Executive Committee             Advisors, Inc, Seligman Services, Inc., and Carbo
                                                                 Ceramics Inc., ceramic proppants for oil and gas
                                                                 industry; Director, Seligman Data Corp., Kerr-McGee
                                                                 Corporation, diversified energy company; and Sarah
                                                                 Lawrence College; and a Member of the Board of
                                                                 Governors of the Investment Company Institute.
                                                                 Formerly, Director, Daniel Industries Inc.,
                                                                 manufacturer of oil and gas metering equipment.

</TABLE>

                                       5
<PAGE>







<TABLE>
<CAPTION>



    <S>                          <C>                             <C>
        Brian T. Zino*           Director, President and         Director and President, J. & W. Seligman & Co.
             (46)                Member of the Executive         Incorporated; President (with the exception of
                                 Committee                       Seligman Quality Municipal Fund, Inc. and Seligman
                                                                 Select Municipal Fund, Inc.) and Director or Trustee,
                                                                 the Seligman Group of investment companies; Chairman,
                                                                 Seligman Data Corp.; Director, Seligman Advisors, Inc., 
                                                                 Seligman Services, Inc., and Seligman Henderson Co.

     Richard R. Schmaltz*        Director and Member of the      Director and Managing Director, Director of
             (58)                Executive Committee             Investments, J. & W. Seligman & Co. Incorporated;
                                                                 Director or Trustee, the Seligman Group of investment
                                                                 companies; Director, Seligman Henderson Co., and Trustee
                                                                 Emeritus of Colby College. Formerly, 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
             (69)                                                University; Director or Trustee, the Seligman Group
       Tufts University                                          of investment companies; Chairman, American Council
        Packard Avenue,                                          on Germany; a Governor of the Center for Creative
       Medford, MA 02155                                         Leadership; Director; Raytheon Co., electronics;
                                                                 National Defense University; and the Institute for
                                                                 Defense Analysis.  Formerly, Director, USLIFE
                                                                 Corporation; 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
             (63)                                                or Trustee, the Seligman Group of investment
      18 Highland Circle                                         companies; Director, the Committee for Economic
     Bronxville, NY 10708                                        Development; and Chairman, The Rockefeller
                                                                 Foundation, charitable foundation. Formerly,
                                                                 Trustee, The Markle Foundation, philanthropic
                                                                 organization; and Director, NYNEX, telephone
                                                                 company; and International Research and Exchange 
                                                                 Board, intellectual exchanges.
</TABLE>

                                       6
<PAGE>




<TABLE>
<CAPTION>
 <S>                             <C>                             <C>
       Frank A. McPherson        Director                        Retired Chairman and Chief Executive Officer of Kerr
              (65)                                               McGee Corporation; Director or Trustee, the Seligman
    123 Robert S. Kerr Ave.                                      Group of investment companies; Director,
    Oklahoma City, Ok 73102                                      Kimberly-Clark Corporation, consumer products; Bank
                                                                 of Oklahoma Holding Company; Baptist Medical Center;
                                                                 Oklahoma Chapter of the Nature Conservancy; Oklahoma
                                                                 Medical 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 &
             (69)                                                Cromwell, law firm; Director or Trustee, the Seligman
                                                                 125 Broad Street, Group of investment companies; Director, 
                                                                 Commonwealth New York, NY 10004 Industries, Inc., manufacturers
                                                                 of aluminum sheet products; the Foreign Policy  Association;
                                                                 Municipal Art Society of New York; the U.S. Council for
                                                                 International Business; and The New York and Presbyterian
                                                                 Hospital; Chairman, American Australian Association;
                                                                 and The New York and Presbyterian Hospital Care 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
             (56)                                                investment companies; Trustee, the Geraldine R. Dodge
         P.O. Box 449                                            Foundation, charitable foundation; and Chairman of
      Gladstone, NJ 07934                                        the Board of Trustees of St. George's School

                                                                 (Newport, RI). Formerly, Director, the National
                                                                 Association of Independent Schools (Washington, DC).

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

       James Q. Riordan          Director                        Director or Trustee, the Seligman Group of investment
             (71)                                                companies; Director, The Houston Exploration Company;
       675 Third Avenue,                                         The Brooklyn Museum, KeySpan Energy Corporation; and
          Suite 3004                                             Public Broadcasting Service; and Trustee, the
      New York, NY 10017                                         Committee for Economic Development. Formerly,
                                                                 Co-Chairman of the Policy Council of the Tax
                                                                 Foundation; Director, Tesoro Petroleum Companies,
                                                                 Inc. and Dow Jones & Co., Inc.; Director and
                                                                 President, Bekaert Corporation; and Co-Chairman,
                                                                 Mobil Corporation.
</TABLE>

                                       7
<PAGE>





<TABLE>
<CAPTION>
     <S>                         <C>                             <C>
       Robert L. Shafer          Director                        Retired Vice President, Pfizer Inc.; Director or
             (66)                                                Trustee, the Seligman Group of investment companies.
     235 East 42nd Street,                                       Formerly, Director, USLIFE Corporation.
      New York, NY 10017

       James N. Whitson          Director                        Director and Consultant, Sammons Enterprises, Inc.;
             (63)                                                Director or Trustee, the Seligman Group of investment
      300 Crescent Court,                                        companies; C-SPAN; and CommScope, Inc. manufacturer
           Suite 700                                             of coaxial cables.  Formerly, Executive Vice
       Dallas, TX 75202                                          President, Chief Operating Officer, Sammons
                                                                 Enterprises, Inc.; and Director, Red Man Pipe and
                                                                 Supply Company, piping and other materials.
        Arsen Mrakovcic          Vice President and Portfolio    Managing Director, J. & w. Seligman & Co.
              (33)               Manager                         Incorporated; Vice President and Portfolio Manager,

                                                                 two other open-end investment companies in the
                                                                 Seligman Group.  Formerly, Vice President, Investment
                                                                 Officer, J & W. Seligman & Co. Incorporated from
                                                                 January 1995 to January 1996 and Portfolio Assistant,
                                                                 J & W. Seligman & Co. Incorporated from June 1992 to
                                                                 January 1995.

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

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

         Thomas G. Rose          Treasurer                       Treasurer, the Seligman Group of investment companies
              (41)                                               and 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.

                                       8
<PAGE>



<TABLE>
<CAPTION>

COMPENSATION

                                                                          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                          $                          N/A               $
Alice S. Ilchman, Director                                                   N/A
Frank A. McPherson, Director                                                 N/A
John E. Merow, Director                                                      N/A
Betsy S. Michel, Director                                                    N/A
James C. Pitney, Director                                                    N/A
James Q. Riordan, Director                                                   N/A
Robert L. Shafer, Director                                                   N/A
James N. Whitson, Director                               (d)                 N/A                         (d)


</TABLE>

(1) For the Fund's fiscal year ended September 30, 1998. Effective January 16,
    1998, 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 eighteen investment
    companies. 
(d) Deferred.

The Fund has a compensation arrangement under which outside directors may elect
to defer receiving their fees. Under this arrangement, interest will be accrued
on the deferred balances. The annual cost of such fees and interest is included
in the directors' fees and expenses, and the accumulated balance thereof is
included in "Liabilities" in the Fund's financial statements. The total amount
of deferred compensation (including interest) payable in respect of the Fund to
Mr. Whitson as of September 30, 1998 was $ . Messrs. Merow and Pitney no longer
defer current compensation; however, they have accrued deferred compensation in
the amounts of $ and $ , respectively, as of September 30, 1998.

The Fund has applied for and received exemptive relief that would permit a
director who has elected deferral of his or her fees to 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 any of the investment companies advised by
Seligman, as designated by the director. The Fund may, but is not obligated to,
purchase shares of such investment companies to hedge its obligations in
connection with this deferral arrangement.

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 Funds, the other investment companies in the Seligman Group, and J. & W.
Seligman & Co. Incorporated 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 J. & W. Seligman & Co. Incorporated 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.


                                       9


<PAGE>



               CONTROL PERSONS AND PRINCIPAL HOLDERS OF SECURITIES

CONTROL PERSONS

As of November 2, 1998, 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 November 2, 1998, 14.67% of the Fund's Class A capital stock then
outstanding, and 44.36% of the Fund's Class D capital stock then outstanding,
were owned of record by MLPF&S for the Sole Benefit of Its Customers, Attn Fund
Administrator, 4800 Deer Lake Drive East, 3rd Floor, Jacksonville, FL 32246.

MANAGEMENT OWNERSHIP

Directors and officers of the Fund as a group owned less than 1% of the Fund's
Class A Capital Stock at November 2, 1998. As of that date, no Directors or
officers owned shares of the Fund's Class B or Class D Capital Stock.

                     INVESTMENT ADVISORY AND OTHER SERVICES

INVESTMENT ADVISER

J. & W. Seligman & Co. Incorporated (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. On December 29, 1988, a majority of the outstanding voting
securities of Seligman was purchased by Mr. William C. Morris and a simultaneous
recapitalization of Seligman occurred. 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 .95% per annum of the Fund's
average daily net assets on the first $750 million of net assets and .85% per
annum of the Fund's average daily net assets in excess of $750 million. For the
fiscal year ended September 30, 1998, the Fund paid Seligman $8,859,463, equal
to 0.93% per annum of its average daily net assets. For the fiscal year ended
September 30, 1997, the Fund paid Seligman $8,127,464, equal to .94% per annum
of its average daily net assets, and for the fiscal year ended September 30,
1996, the Fund paid Seligman $6,014,692, equal to .92% per annum of its average
daily net assets.

The Fund pays of all 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 the Manager or
its affiliates, insurance premiums and extraordinary expenses such as litigation
expenses.

                                       10

<PAGE>

The Management Agreement was initially approved by the Board of Directors at a
Meeting held on October 11, 1988 and by the shareholders at a meeting held on
December 15, 1988. The amendments to the Management Agreement, effective January
1, 1996, to increase the fee rate payable to the Manager by the Fund, were
approved by the Board of Directors on September 21, 1995 and by the shareholders
at a special meeting held 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) if the
Manager 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 or by Seligman, 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. 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.

Officers, directors and employees of Seligman are permitted to engage in
personal securities transactions, subject to Seligman's Code of Ethics. 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 Compliance Officer,
and sets forth a procedure of identifying, for disciplinary action, those
individuals who violate the Code of Ethics. The Code of Ethics prohibits each of
the officers, directors and employees (including all portfolio managers) of
Seligman from purchasing or selling any security that the officer, director or
employee knows or believes (1) was recommended by Seligman for purchase or sale
by any client, including the Fund, within the preceding two weeks, (2) has been
reviewed by Seligman for possible purchase or sale within the preceding two
weeks, (3) is being purchased or sold by any client, (4) is being considered by
a research analyst, (5) is being acquired in a private placement, unless prior
approval has been obtained from Seligman's Compliance Officer, or (6) is being
acquired during an initial or secondary public offering. The Code of Ethics also
imposes a strict standard of confidentiality and requires portfolio managers to
disclose any interest they may have in the securities or issuers that they
recommend for purchase by any client.

The Code of Ethics also 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) for which the portfolio manager or investment team
manages; and (2) each employee from engaging in short-term trading (a purchase
and sale or vice-versa within 60 days). Any profit realized pursuant to either
of these prohibitions must be disgorged.

Officers, directors and 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 officers, directors and
employees are also required to disclose all securities beneficially owned by
them on December 31 of each year.

PRINCIPAL UNDERWRITER

Seligman Advisors, Inc., (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 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 of the Fund" as directors or officers of both the Fund and
Seligman Advisors are affiliated persons of both entities.


                                       11

<PAGE>

SERVICES PROVIDED BY THE INVESTMENT ADVISER

Under the Management Agreement, dated December 29, 1988, as amended 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 of the Fund, as set forth below:

<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(2)                  0                       0                        0

</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.

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 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

                                       12

<PAGE>

Advisors from its own resources, which may include the management fee that
Seligman receives from the Fund.

Under the 12b-1 Plan, the Fund reimburses Seligman Advisors for its actual
expenses incurred with respect to Class A shares at an annual rate of up to .25%
of the average daily net asset value of Class A shares. It is expected that the
proceeds from the fee in respect of Class A shares will be used primarily to
compensate Service Organizations which enter into agreements with Seligman
Advisors. Such Service Organizations will 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 the maintenance of
shareholder accounts. The fee payable from time to time is, within such limit,
determined by the Directors of the Fund. In the event that Seligman Advisors is
not fully reimbursed for expenses or payments made to service organizations with
respect to Class A shares in any fiscal year, such unreimbursed amounts cannot
be carried over to be paid in any other fiscal year. The total amount paid to
Seligman Advisors for the year ended September 30, 1998 in respect of the Fund's
Class A shares pursuant to the 12b-1 Plan was equal to .23% of the Class A
shares' average daily net assets.

Under the 12b-1 Plan, the Fund reimburses Seligman Advisors for its expenses
with respect to Class B and Class D shares at an annual rate of up to 1% of the
average daily net asset value of the Class B and Class D shares.

Proceeds from the Class B fees are used to pay Service Organizations a
continuing fee of up to .25% on an annual basis of the average net asset value
of Class B shares attributable to particular Service Organizations for providing
personal service and/or the maintenance of shareholder accounts and will also be
used by Seligman Advisors to defray the expense of the payment of 4% made by it
to Service Organizations at the time of sale of Class B shares. The total amount
paid for the year ended September 30, 1998 by the Fund's Class B shares pursuant
to the Plan was 1% per annum of the average daily net assets of Class B shares.
The amounts expended by Seligman Advisors in any one year upon the initial
purchase of Class B shares may exceed the amounts received by it from 12b-1 Plan
payments retained. Expenses with respect to Class B shares in one fiscal year of
the Fund may be paid from Class B 12b-1 Plan fees received from the Fund in any
other fiscal year. For the fiscal year ended September 30, 1998, there were $ of
unreimbursed expenses incurred under the 12b-1 Plan with respect to Class B
shares. This amount is equal to % of the net assets of Class B at September 30,
1997.

Proceeds from the Class D fees are used primarily to compensate Service
Organizations for administration, shareholder services and distribution
assistance (including a continuing fee of up to .25% on an annual basis of the
average daily net asset value of Class D shares attributable to particular
Service Organizations for providing personal service on shareholder accounts)
and will initially be used by Seligman Advisors to defray the expense of the
payment of 1% made by it to Service Organizations at the time of sale of Class D
shares. The total amount paid for the year ended September 30, 1998 by the
Fund's Class D shares pursuant to the Plan was 1% per annum of the average daily
net assets of Class D shares. The amounts expended by Seligman Advisors in any
one year upon the initial purchase of Class D shares may exceed the amounts
received by it from 12b-1 Plan payments retained. Expenses with respect to Class
D shares in one fiscal year of the Fund may be paid from Class D 12b-1 Plan fees
received from the Fund in any other fiscal year. For the fiscal year ended
September 30, 1998 there were $ of unreimbursed expenses incurred under the
12b-1 Plan with respect to Class D shares. This amount is equal to % of the net
assets of Class D at September 30, 1997.

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 with respect to any other class or any
other Seligman mutual fund. Expenses attributable to the Fund as a whole will be
allocated to Class A, Class B and Class D shares in accordance with a
methodology approved by the Fund's Board of Directors. The Fund may participate
in joint distribution activities with other Seligman mutual funds, and the
expenses of such activities will be allocated among such funds in accordance
with a methodology approved by the Board.

                                       13
<PAGE>



During the Fund's fiscal year ended September 30, 1998, the payments made by the
Fund to Seligman Advisors under the 12b-1 Plan were spent on the following
activities in the following amounts:

                                             Class A       Class B       Class D
                                             -------       -------       -------

Advertising

Printing and Mailing of Prospectuses to 
  other than Current Shareholders

Compensation to Service Organizations

Compensation to Sales Personnel

Interest, Carrying, or Other Finance Charges

Other

The 12b-1 Plan was approved on March 19, 1992 by the 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 Plan or in any agreement related to the 12b-1 Plan (the
"Qualified Directors") and was approved by shareholders of the Fund at a Special
Meeting of the Shareholders held on May 1, 1992. The 12b-1 Plan became effective
in respect of the Class A shares on June 1, 1992. 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 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 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 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, Inc. (SSI), an affiliate of Seligman, is a limited purpose
broker/dealer. SSI acts as a broker/dealer of record for shareholder accounts
that do not have a designated financial advisor and receives compensation from
the Fund pursuant to the 12b-1 Plan for providing personal services and account
maintenance to such accounts and other distribution services. For the fiscal
years ended September 30, 1998, 1997, and 1996, SSI received distribution and
service fees of $ , $65,586 and $73,340, respectively, pursuant to the 12b-1
Plan.


                                       14

<PAGE>



                    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 fiscal years ended September 30, 1998, 1997, and 1996, the Fund paid
total brokerage commissions to others for execution and research and statistical
services in the amounts of $ , $1,446,040, and $956,356, respectively. The
amount of brokerage commissions paid by the Fund has increased materially from
1996 due to an increase in portfolio turnover.

COMMISSIONS

For the fiscal years ended September 30, 1998, 1997, and 1996, 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.

DIRECTED BROKERAGE

During its fiscal year ended September 30, 1998 neither the Fund nor Seligman
directed any of the Fund's brokerage transactions to a broker because of
research services provided.

REGULAR BROKER-DEALERS

During its fiscal year ended September 30, 1998, the Fund did not acquire
securities of any of its regular brokers or dealers (as defined in Rule 10b-1
under the 1940 Act).

                                       15


<PAGE>



                       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 $0.10, divided into three classes, designated Class A, Class B. and
Class D shares. Each share of the Fund's Class A, Class B and Class D capital
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 capital 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) 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 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 


                                       16

<PAGE>

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.

CDSC APPLICABLE TO CLASS A SHARES. Class A shares purchased without an initial
sales charge in accordance with the sales charge schedule in the Fund's
Prospectus, or pursuant to 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
(as described below) may be subject to a CDSC of 1% for terminations at the plan
level only, on redemptions of shares purchased with in eighteen months prior to
plan termination. The 1% CDSC will be waived on shares that were purchased
through Dean Witter Reynolds, Inc. by certain Chilean institutional investors
(i.e. pension plans, insurance companies and mutual funds). Upon redemption of
such shares within an eighteen-month period, 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.

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.

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.

                                       17

<PAGE>

FURTHER TYPES OF REDUCTIONS. Class A shares may also be issued without an
initial sales charge 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; to separate accounts established and maintained by an insurance
company which are exempt from registration under Section 3(c)(11) of the 1940
Act; to registered representatives and employees (and their spouses and minor
children) of any dealer that has a sales agreement with Seligman Advisors; to
financial institution trust departments; to registered investment advisers
exercising discretionary investment authority with respect to the purchase of
Fund shares; 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; 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; to other investment companies in the Seligman
Group in connection with a deferred fee arrangement for outside directors; and
to "eligible employee benefit plans" which have at least (1) $500,000 invested
in the Seligman mutual funds or (2) 50 eligible employees to whom such plan is
made available.

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%

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.

SYSTEMATIC WITHDRAWALS. Class B and Class D shareholders who reinvest both their
dividends and capital gain distributions to purchase additional shares of the
Fund, may use the Fund's Systematic Withdrawal Plan to withdraw up to 12% 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 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 

                                       18

<PAGE>

    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 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.

FUND REORGANIZATIONS

Class A 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.

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.

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.

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


                                       19

<PAGE>

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 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, including open short positions and options written, are
valued at the last sale 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. 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 sixty days remaining
to maturity are generally valued at amortized cost. Short-term obligations with
more than sixty 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 U.S. 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.

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 U.S. dollars at the mean between the bid and offer prices of such
currencies against U.S. 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 are sold with a maximum initial sales charge of 4.75%
and Class B and Class D shares are sold at NAV1. Using each Class's NAV at
September 30, 1998, the maximum offering price of the Fund's shares is as
follows:

Class A
- -------
Net asset value and redemption price per Class A share...........     $12.44
                                                                      ------

Maximum sales charge (4.75% of offering price)...................        .62
                                                                      ------

Offering price to public.........................................     $13.06
                                                                      ======


                                       20

<PAGE>



Class B
- -------
Net asset value and offering price per share 1.......................     $11.66
                                                                           =====

Class D
- -------
Net asset value and offering price per share 1.......................     $11.67
                                                                           =====
- --------------
1  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 subject to a 
   CDSC of 1% on redemptions 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 Securities and Exchange Commission. 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 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 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


                                       21


<PAGE>

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 shareholder on a 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.

                                  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, as set forth above under "DEALER
REALLOWANCES." Seligman Advisors retains the balance of sales charges and any
CDSCs paid by investors.

Total sales charges paid by shareholders of Class A shares of the Fund for the
fiscal years ended September 30, 1998, 1997 and 1996, amounted to $ ,
$1,825,779, and $6,222,709, respectively, of which $ , $203,896 and $5,689,900,
respectively, was retained by Seligman Advisors. For the fiscal years ended
September 30, 1998 and 1997, Seligman Advisors retained CDSC charges on Class A
shares amounting to $ and $1,089, respectively.

For the fiscal years ended September 30, 1998, 1997 and 1996, Seligman Advisors
retained CDSC charges on Class D shares amounting to $ , $147,084, and $117,636
respectively. 

                                       22


<PAGE>

Seligman Advisors has sold its rights to collect any CDSC imposed on redemptions
of Class B shares to FEP Capital, L.P. Seligman Advisors has also sold its
rights to substantially all of the distribution fee in respect of Class B shares
received by it pursuant to the 12b-1 Plan to FEP, which provides funding to
Seligman Advisors to enable it to pay commissions to dealers at the time of the
sale of the related Class B shares. In connection with the sale of its rights to
collect any CDSC and the distribution fees with respect to Class B shares,
Seligman Advisors receives payments from FEP based on the value of Class B
shares sold. The aggregate amount of such payments and the Class B distribution
fees retained by Seligman Advisors for the fiscal years ended September 30,
1998, 1997 and for the fiscal period ended September 30, 1996, amounted to $ ,
$106,996, and $61,955, respectively.

COMPENSATION

Seligman Advisors received the following commissions and other compensation from
the Fund during its fiscal year ended September 30, 1998:

 Net Underwriting     Compensation on
  Discounts and       Redemptions and         Brokerage            Other
   Commissions          Repurchases          Commissions        Compensation(1)
 ----------------     ---------------        -----------        ---------------
(1)

SSI is eligible to receive commissions from certain sales of Fund shares. For
the Fund's fiscal years ended September 30, 1998, 1997 and 1996, SSI received
commissions of $ , $25,093, and $156,157.

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" (as defined under "PURCHASE
OF SHAREs--Eligible Employee Benefit Plans") 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.

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 


                                       23


<PAGE>

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 the Manager during a specified period of time. Such bonus or
other incentive may take the form of payment for travel expenses, including
lodging, incurred in connection with trips taken by qualifying registered
representatives and members of their families to places within or outside the
United States. 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

The average annual total returns for the Fund's Class A shares for the one-year,
five-year, and ten-year periods through September 30, 1998, were -25.08%, 9.12%,
and 14.31%, respectively. These returns were computed by subtracting the maximum
sales charge of 4.75% of public offering price and assuming that all of the
dividends and distributions paid by the Fund over the relevant time period were
reinvested. 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 dividends and
gain distributions are reinvested in additional taken in shares. It shows that a
$1,000 investment in Class A shares, assuming payment of the 4.75% sales charge,
made on October 1, 1988, had a value of $       on September 30, 1998, resulting
in an aggregate total return of    %. 

The average annual total returns for the Fund's Class B shares for the one-year
period ended September 30, 1998 and for the period from April 22, 1996
(inception) through September 30, 1998, were -25.45% and -2.99%, respectively.
This return was computed assuming that all dividends and distributions paid by
the Fund's Class B 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 applicable CDSC. Table B illustrates the total return (income
and capital) on Class B shares of the Fund, assuming all dividends and gain
distributions are reinvested in additional shares. It shows that a $1,000
investment in Class B shares on April 22, 1996 (commencement of operations of
Class B shares) had a value of $ on September 30, 1998, resulting in an
aggregate total return of    %.

The average annual total returns for the Fund's Class D shares for the one-year
and five-year periods ended September 30, 1998 and for the period from May 3,
1993 (inception) through September 30, 1998, were -22.64%, 9.12%, and 13.20%,
respectively. These returns were computed assuming that all of the dividends and
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 for the one year period the 1% CDSC,
if applicable. Table C illustrates the total return (income and capital) on
Class D shares of the Fund, assuming all dividends and 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 $ on September 30, 1998, resulting in an aggregate total return of %.


                                       24

<PAGE>



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                         Total Value
Period          Initial       Capital Gain      Value of             of                 Total
Ended(1)     Investment(2)    Distributions     Dividends         Investment(2)      Return(1)(3)
- --------     -------------    -------------     ---------        --------------      ------------
<S>          <C>              <C>               <C>              <C>                 <C>
9/30/89      $                $                 $                $
9/30/90
9/30/91
9/30/92
9/30/93
9/30/94
9/30/95
9/30/96
9/30/97
9/30/98                                                                                      %

                                TABLE B - CLASS B

                Value of        Value of                         Total Value
Period          Initial       Capital Gain      Value of             of                 Total
Ended(1)     Investment(2)    Distributions     Dividends         Investment(2)      Return(1)(3)
- --------     -------------    -------------     ---------        --------------      ------------
             $                $                 $                $
9/30/96
9/30/97
9/30/98                                                                                      %

                                TABLE C - CLASS D

                Value of        Value of                         Total Value
Period           Initial       Capital Gain      Value of             of                 Total
Ended(1)     Investment(2)    Distributions     Dividends         Investment(2)      Return(1)(3)
- --------     -------------    -------------     ---------        --------------      ------------
             $                $                 $                $
9/30/93
9/30/94
9/30/95
9/30/96
9/30/97
9/30/98                                                                                      %

</TABLE>

                                       25

<PAGE>

1   For the ten-year period ended September 30, 1998 for Class A shares, from
    commencement of operations of Class B shares on April 22, 1996 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;
    determining total value of all dividends and distributions that would have
    been paid during the period on such shares assuming that each dividend or
    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 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 Fund's total return and average annual total return of Class A shares quoted
from time to time through June 1, 1992 do not reflect the deduction of the
administration, shareholder services and distribution fee, and through December
31, 1995 for Class A and Class D shares does not reflect the increased
management fee approved by shareholders on December 12, 1995 and effective on
January 1, 1996; which 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 Service, 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 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.

                              FINANCIAL STATEMENTS

The Annual Report to shareholders for the fiscal year ended September 30, 1998
contains a schedule of the investments of the Fund as of September 30, 1998, 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
Statement of Additional Information.

                                       26
<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

o    Helps finance America's fledgling railroads through underwritings.

o    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.
o    Becomes a prominent underwriter of corporate securities, including New York
     Mutual Gas Light Company, later part of Consolidated Edison.
o    Provides financial assistance to Mary Todd Lincoln and urges the 
     Senate to award her a pension.
o    Is appointed U.S. Navy fiscal agent by President Grant.
o    Becomes a leader in raising capital for America's industrial and urban
     development.

 ...1900-1910

o    Helps Congress finance the building of the Panama Canal.

 ...1910s

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

 ...1920s

o    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.
o    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

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

                                       27
<PAGE>



 ...1940s

o    Helps shape the Investment Company Act of 1940.

o    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.
o    Assumes management of National Investors Corporation, today Seligman Growth
     Fund, Inc.
o    Establishes Whitehall Fund, Inc., today Seligman Income Fund, Inc.

 ...1950-1989

o    Develops new open-end investment companies.  Today, manages more than 40
     mutual fund portfolios.
o    Helps pioneer state-specific, municipal bond funds, today managing a 
     national and 18 state-specific municipal funds.
o    Establishes J. & W. Seligman Trust Company and J. & W. Seligman Valuations 
     Corporation.
o    Establishes Seligman Portfolios, Inc., an investment vehicle offered 
     through variable annuity products.

 ...1990s

o    Introduces  Seligman Select  Municipal Fund, Inc. and Seligman  Quality  
     Municipal Fund, Inc. two closed-end funds that invest in high quality 
     municipal bonds.
o    In 1991 establishes a joint venture with Henderson plc, of London, known as
     Seligman Henderson Co., to offer global investment products.
o    Introduces to the public Seligman Frontier Fund, Inc., a small 
     capitalization mutual fund.
o    Launches Seligman Henderson Global Fund Series, Inc., which today offers
     five separate series: Seligman Henderson International Fund, Seligman
     Henderson Global Smaller Companies Fund, Seligman Henderson Global
     Technology Fund, Seligman Henderson Global Growth Opportunities Fund and
     Seligman Henderson Emerging Markets Growth Fund.
o    Launches Seligman Value Fund Series, Inc., which currently offers two
     separate series: Seligman Large-Cap Value Fund and Seligman Small-Cap Value
     Fund.

                                       28

<PAGE>

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

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

         All Exhibits have been previously filed and are incorporated  herein by
         reference,  except  Exhibits  marked with an asterisk (*) which will be
         filed by amendment.

(a)      Form of Amended and Restated Articles of  Incorporation.  (Incorporated
         by reference to Registrant's  Post-Effective  Amendment No. 21 filed on
         January 28, 1997.)

(b)      Amended and Restated Bylaws of Registrant.  (Incorporated  by reference
         to  Registrant's  Post-Effective  Amendment No. 21 filed on January 28,
         1997.)

(c)      Copy of Specimen Stock Certificate.
         (Incorporated by Reference to Form SE filed on April 16, 1996.)

(d)      Management  Agreement between the Registrant and J. & W. Seligman & Co.
         Incorporated. (Incorporated by reference to Registrant's Post-Effective
         Amendment No. 20 filed April 19, 1996.)

(e)      Distributing   Agreement  between  Registrant  and  Seligman  Financial
         Services,    Inc.    (Incorporated   by   reference   to   Registrant's
         Post-Effective Amendment No. 21 filed on January 28, 1997.)

(e)(1)   Amended Sales Agreement between Seligman Financial  Services,  Inc. and
         Dealer.  (Incorporated  by  reference  to  Registrant's  Post-Effective
         Amendment No. 20 filed April 19, 1996.)

(e)(2)   Form of Sales Agreement between Seligman Financial  Services,  Inc. and
         Dean Witter Reynolds,  Inc. (Incorporated by reference to Exhibit 6b of
         Registration  Statement No. 2-33566,  Post-Effective  Amendment No. 53,
         filed on April 28, 1997.)

(e)(3)   Form of Sales Agreement between Seligman Financial  Services,  Inc. and
         Dean  Witter   Reynolds,   Inc.   with   respect  to  certain   Chilean
         institutional  investors.  (Incorporated  by reference to Exhibit 6c of
         Registration  Statement No. 2-33566,  Post-Effective  Amendment No. 53,
         filed on April 28, 1997.)

(e)(4)   Form of Dealer Agreement between Seligman Financial Services,  Inc. and
         Smith  Barney  Inc.   (Incorporated  by  reference  to  Exhibit  6d  of
         Registration  Statement No. 2-33566,  Post-Effective  Amendment No. 53,
         filed on April 28, 1997.)

(f)      Matched  Accumulation  Plan  of J. & W.  Seligman  & Co.  Incorporated.
         (Incorporated by reference to Registrant's Post-Effective Amendment No.
         21 filed on January 28, 1997.)

(f)(1)   Deferred  Compensation  Plan for Directors of Seligman  Group of Funds.
         (Incorporated by reference to Registrant's Post-Effective Amendment No.
         21 filed on January 28, 1997.)

(g)      Custody  Agreement  between  Registrant and Investors  Fiduciary  Trust
         Company.  (Incorporated  by  reference to  Registrant's  Post-Effective
         Amendment No. 21 filed on January 28, 1997.)

(h)      Not applicable.

(i)      Opinion  and  Consent  of  Counsel.   (Incorporated   by  reference  to
         Registrant's  Post-Effective  Amendment  No.  21 filed on  January  28,
         1997.)

(j)      Consent of Independent Auditors.*

(k)      Not applicable.

(l)      Copy of  Purchase  Agreement  for  Initial  Capital for Class B shares.
         (Incorporated  by referenced ot Registrant's  Post-Effective  Amendment
         No. 20 filed April 19, 1996.)


<PAGE>


PART C.    OTHER INFORMATION (continued)
           -----------------
(l)(1)   Copy of  Purchase  Agreement  for  Initial  Capital for Class D shares.
         (Incorporated by reference to Registrant's Post-Effective Amendment No.
         21 filed on January 28, 1997.)

(m)      Copy of Amended  Administration,  Shareholder Services and Distribution
         Plan and Form of Agreement of Registrant.  (Incorporated  by referenced
         to Registrant's Post-Effective Amendment No. 20 filed April 19, 1996.)

(n)      Financial Data Schedules meeting the requirements of Rule 483 under the
         Securities Act of 1933.*

(o)      Copy of Multiclass  Plan for Seligman  Group of Funds  pursuant to Rule
         18f-3  under  the  Investment  Company  Act of 1940.  (Incorporated  by
         reference  to  Registrant's  Post-Effective  Amendment  No. 21 filed on
         January 28, 1997.)

Other Exhibits:   Powers of Attorney. (Incorporated by reference to Registrant's
                  Post-Effective Amendment No. 23  filed on January 28, 1998.)

Item 24. Persons Controlled by or Under Common Control With Registrant - None.
- -------- -------------------------------------------------------------

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. 21 to the Registration Statement.

         Insofar as indemnification for liabilities arising under the Securities
         Act of 1933 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 as 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  ("Manager"),  is  the
         Registrant's  investment manager. The Manager also serves as investment
         manager to seventeen associated investment companies. They are Seligman
         Capital Fund,  Inc.,  Seligman Cash  Management  Fund,  Inc.,  Seligman
         Common Stock Fund, Inc., Seligman  Communications and Information Fund,
         Inc.,  Seligman  Growth  Fund,  Inc.,  Seligman  Henderson  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  Quality
         Municipal Fund, Inc.,  Seligman Select  Municipal Fund, Inc.,  Seligman
         Value Fund Series, Inc. and Tri-Continental Corporation.

         The Manager has an investment  advisory service division which provides
         investment  management or advice to private clients.  The list required
         by this Item 28 of officers and directors of the Manager, 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 or Form ADV,  filed by the  Manager  pursuant to the
         Investment  Advisers  Act of 1940 (SEC File No.  801-15798),  which was
         filed on March 25, 1998.



<PAGE>



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

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 are:

         Seligman Capital Fund, Inc.
         Seligman Cash Management Fund, Inc.
         Seligman Common Stock Fund, Inc.
         Seligman Communications and Information Fund, Inc.
         Seligman Growth Fund, Inc.
         Seligman Henderson 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 Value Fund Series, Inc.

     (b) Name of each  director,  officer or partner of  Registrant's  principal
         underwriter named in response to Item 21:
<TABLE>
<CAPTION>

                                                       Seligman Advisors, Inc.
                                                       -----------------------
                                                       As of October 31, 1998
                                                       ----------------------

                 (1)                                         (2)                                             (3)
         Name and Principal                            Positions and Offices                       Positions and Offices
         Business Address                              With Underwriter                            With Registrant
         ----------------                              ----------------                            ---------------
<S>                                                    <C>                                         <C>
         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
         ED LYNCH*                                     Senior Vice President, Director             None
                                                       of Marketing
         JAMES R. BESHER                               Senior Vice President,                      None
         14000 Margaux Lane                            Divisional Sales Director
         Town & Country, MO  63017
         GERALD I. CETRULO, III                        Senior Vice President of Sales              None
         140 West Parkway
         Pompton Plains, NJ  07444
         JONATHAN G. EVANS                             Senior Vice President of Sales              None
         222 Fairmont Way
         Ft. Lauderdale, FL  33326
         T. WAYNE KNOWLES                              Senior Vice President,                      None
         104 Morninghills Court                        Divisional Sales Director
         Cary, NC  27511

</TABLE>


<PAGE>


<TABLE>
<CAPTION>

PART C.  OTHER INFORMATION (continued)
         -----------------
                                                       Seligman Advisors, Inc.
                                                       -----------------------
                                                       As of October 31, 1998
                                                       ----------------------

                 (1)                                         (2)                                             (3)
         Name and Principal                            Positions and Offices                       Positions and Offices
         Business Address                              With Underwriter                            With Registrant
         ----------------                              ----------------                            ---------------
<S>                                                    <C>                                         <C>
         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 of Sales              None
         367 Bryan Drive
         Alamo, CA  94526
         RICHARD M. POTOCKI                            Senior Vice President, Regional Director,   None
         Seligman International UK Limited             Europe and the Middle East
         Berkeley Square House 2nd Floor
         Berkeley Square
         London, United Kingdom W1X 6EA
         BRUCE M. TUCKEY                               Senior Vice President of Sales              None
         41644 Chathman Drive
         Novi, MI  48375
         ANDREW S. VEASEY                              Senior Vice President of Sales              None
         14 Woodside
         Rumson, NJ  07760
         J. BRERETON YOUNG*                            Senior Vice President,                      None
                                                       National Accounts Manager
         PETER J. CAMPAGNA                             Vice President, Regional Retirement         None
         1130 Green Meadow Court                       Plans Manager
         Acworth, GA  30102
         MATTHEW A. DIGAN*                             Vice President, Director of Mutual          None
                                                       Fund Marketing
         MASON S. FLINN                                Vice President, Regional Retirement         None
         159 Varennes                                  Plans Manager
         San Francisco, CA  94133
         ROBERT T. HAUSLER*                            Vice President, Global Funds                None
                                                       Marketing
         MARSHA E. JACOBY*                             Vice President, Offshore                    None
                                                       Business Manager
         WILLIAM W. JOHNSON*                           Vice President, Order Desk                  None
         MICHELLE L. MCCANN*                           Vice President, Director of Retirement      None
                                                       Plans
         SCOTT H. NOVAK*                               Vice President, Director of Insurance       None
                                                       Products
         RONALD W. POND*                               Vice President, Portfolio Advisor           None
         TRACY A. SALOMON*                             Vice President, Retirement                  None
                                                       Marketing Manager
         MICHAEL R. SANDERS*                           Vice President, Product Manager             None
                                                       Managed Money Services
         HELEN SIMON*                                  Vice President, Sales                       None
                                                       Administration Manager
         GARY A. TERPENING*                            Vice President, Director of Business        None
                                                       Development
         CHARLES L. VON BREITENBACH, II*               Vice President, Director of                 None
                                                       Managed Money Services
         JOAN M. O'CONNELL                             Vice President, Regional Retirement         None
         3707 5th Avenue #136                          Plans Manager
         San Diego, CA  92103

</TABLE>


<PAGE>


<TABLE>
<CAPTION>

PART C.  OTHER INFORMATION (continued)
         -----------------
                                                       Seligman Advisors, Inc.
                                                       -----------------------
                                                       As of October 31, 1998
                                                       ----------------------

                 (1)                                         (2)                                             (3)
         Name and Principal                            Positions and Offices                       Positions and Offices
         Business Address                              With Underwriter                            With Registrant
         ----------------                              ----------------                            ---------------
<S>                                                    <C>                                         <C>
         CHARLES E. WENZEL                             Vice President, Regional Retirement         None
         703 Greenwood Road                            Plans Manager
         Wilmington, DE  19807
         RICHARD B. CALLAGHAN                          Regional Vice President                     None
         7821 Dakota Lane
         Orland Park, IL  60462
         BRADFORD C. DAVIS                             Regional Vice President                     None
         255 4th Avenue, #2
         Kirkland, WA  98033
         CHRISTOPHER J. DERRY                          Regional Vice President                     None
         2380 Mt. Lebanon Church Road
         Alvaton, KY  42122
         KENNETH DOUGHERTY                             Regional Vice President                     None
         8640 Finlarig Drive
         Dublin, OH  43017
         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
         DAVID L. GARDNER                              Regional Vice President                     None
         2504 Clublake Trail
         McKinney, TX  75070
         CARLA A. GOEHRING                             Regional Vice President                     None
         11426 Long Pine
         Houston, TX  77077
         MICHAEL K. LEWALLEN                           Regional Vice President                     None
         908 Tulip Poplar Lane
         Birmingham, AL  35244
         JUDITH L. LYON                                Regional Vice President                     None
         163 Haynes Bridge Road, Ste 205
         Alpharetta, CA  30201
         STEPHEN A. MIKEZ                              Regional Vice President                     None
         11786 E. Charter Oak
         Scottsdale, AZ  85259
         TIM O'CONNELL                                 Regional Vice President                     None
         14872 Summerbreeze Way
         San Diego, CA  92128
         THOMAS PARNELL                                Regional Vice President                     None
         5250 Greystone Drive  #107
         Inver Grove Heights, MN  55077
         DAVID K. PETZKE                               Regional Vice President                     None
         2714 Winding Trail Place
         Boulder, CO  80304
         NICHOLAS ROBERTS                              Regional Vice President                     None
         200 Broad Street, Apt. 2225
         Stamford, CT  06901
         DIANE H. SNOWDEN                              Regional Vice President                     None
         11 Thackery Lane
         Cherry Hill, NJ  08003

</TABLE>

<PAGE>



PART C.  OTHER INFORMATION (continued)
         -----------------
<TABLE>
<CAPTION>

                                                       Seligman Advisors, Inc.
                                                       -----------------------
                                                       As of October 31, 1998
                                                       ----------------------

                 (1)                                         (2)                                             (3)
         Name and Principal                            Positions and Offices                       Positions and Offices
         Business Address                              With Underwriter                            With Registrant
         ----------------                              ----------------                            ---------------
<S>                                                    <C>                                         <C>
         STEVE WILSON                                  Regional Vice President                     None
         83 Kaydeross Park
         Saratoga Springs, NY  12866
         KELLI A. WIRTH-DUMSER                         Regional Vice President                     None
         8618 Hornwood Court
         Charlotte, NC  28215
         FRANK J. NASTA*                               Secretary
                                                                                                   Secretary
         AURELIA LACSAMANA*                            Treasurer                                   None
         JEFFREY S. DEAN*                              Assistant Vice President, Marketing         None
         SANDRA G. FLORIS*                             Assistant Vice President, Order Desk        None
         KEITH LANDRY*                                 Assistant Vice President, Order Desk        None
         GAIL S. CUSHING*                              Assistant Vice President,                   None
                                                       National Accounts Manager
         ALBERT A. PISANO*                             Assistant Vice President and                None
                                                       Compliance Officer
         JACK TALVY*                                   Assistant Vice President, Internal          None
                                                       Marketing Services Manager
         JOYCE PERESS*                                 Assistant Secretary                         None

</TABLE>
* The principal  business  address of each of these directors and/or officers is
100 Park Avenue, New York, N Y 10017.

     (c)  Not Applicable

Item 28.   Location of Accounts and Records
- --------   --------------------------------

           Custodian:      Investors Fiduciary Trust Company
                           801 Pennsylvania
                           Kansas City, MO  64105 AND
                           Seligman Data Corp.
                           100 Park Avenue
                           New York, NY  10017

Item 29.   Management Services - Not Applicable.
- --------   -------------------------------------

Item 30.   Undertakings - The Registrant  undertakes:  (1) if requested to do so
- -------    ------------
           by the holders of at least ten percent 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; and (2) to furnish to each person to
           whom a prospectus is  delivered,  a copy of the  Registrant's  latest
           annual report to shareholders, upon request and without charge.


<PAGE>

                                   SIGNATURES
                                   ----------

           Pursuant to the  requirements  of the Securities Act of 1933, and the
Investment   Company  Act  of  1940,   the   Registrant  has  duly  caused  this
Post-Effective  Amendment No. 24 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 9th day of November, 1998.

                                                SELIGMAN FRONTIER 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. 24 has been
signed below by the following persons in the capacities indicated on November 9,
1998.


SIGNATURE                            TITLE
- ---------                            -----



/s/William C. Morris                 Chairman of the Board (Principal
- --------------------------            executive officer) and Director
   William C. Morris*           
                                
                                
/s/Brian T. Zino                     President and Director
- --------------------------      
   Brian T. Zino                
                                
                                
/s/Thomas G. Rose                    Treasurer (Principal financial
- --------------------------            and accounting officer)
   Thomas G. Rose               
                             

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





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