USAA MUTUAL FUND INC
N-30D, 1998-09-28
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Table of Contents

      USAA Family of Funds                            1
      Message from the President                      2
      Investment Review                               4
      Message from the Manager                        5
      Financial Information:
         Independent Auditors' Report                 7
         Portfolio of Investments                     8
         Notes to Portfolio of Investments           12
         Statement of Assets and Liabilities         13
         Statement of Operations                     14
         Statement of Changes in Net Assets          15
         Notes to Financial Statements               16


Important Information
Through  our  ongoing  efforts to reduce  expenses  and  respond to  shareholder
requests, your annual and semiannual report mailings are "streamlined." One copy
of each report is sent to each address,  rather than to every registered  owner.
For many  shareholders  and their families,  this eliminates  duplicate  copies,
saving paper and postage costs to the Fund.

If you are the  primary  shareholder  on at least  one  account,  prefer  not to
participate in streamlining, and would like to continue receiving one report per
registered account owner, you may request this in writing to:

            USAA Investment Management Company
            Attn: Report Mail
            9800 Fredericksburg Road
            San Antonio, TX 78284-8916

or phone a Mutual Fund Representative at 1-800-531-8448 during business hours.

This  report is for the  information  of the  shareholders  and  others who have
received a copy of the  currently  effective  prospectus  of the USAA  Science &
Technology Fund, managed by USAA Investment Management Company (IMCO). It may be
used as  sales  literature  only  when  preceded  or  accompanied  by a  current
prospectus which gives further details about the Fund.

USAA  with  the  eagle is  registered  in the U.S.  Patent &  Trademark  Office.
(Copyright)1998, USAA. All rights reserved.







USAA Family of Funds Summary

         Fund                                             Minimum
       Type/Name                     Volatility          Investment*
       ---------                     ----------          ----------

 CAPITAL APPRECIATION
===============================================================================
 Aggressive Growth                 Very high               $3,000
 Emerging Markets(1)               Very high               $3,000
 First Start Growth                Moderate to high        $3,000
 Gold(1)                           Very high               $3,000
 Growth                            Moderate to high        $3,000
 Growth & Income                   Moderate                $3,000
 International(1)                  Moderate to high        $3,000
 S&P 500 (Registered Trademark)
   Index(2)                        Moderate                $3,000
 Science & Technology(5)           Very high               $3,000
 World Growth(1)                   Moderate to high        $3,000
       
 ASSET ALLOCATION            
===============================================================================
 Balanced Strategy(1)              Moderate                $3,000
 Cornerstone Strategy(1)           Moderate                $3,000
 Growth and Tax
   Strategy(3)                     Moderate                $3,000
 Growth Strategy(1)                Moderate to high        $3,000
 Income Strategy                   Low to moderate         $3,000
          
 INCOME - TAXABLE         
===============================================================================
 GNMA                              Low to moderate         $3,000
 Income                            Moderate                $3,000
 Income Stock                      Moderate                $3,000
 Short-Term Bond                   Low                     $3,000
              
 INCOME - TAX EXEMPT        
===============================================================================
 Long-Term(3)                      Moderate                $3,000
 Intermediate-Term(3)              Low to moderate         $3,000
 Short-Term(3)                     Low                     $3,000
 State Bond Income(3)**            Moderate                $3,000
       
 MONEY MARKET        
===============================================================================
 Money Market(4)                   Very low                $3,000
 Tax Exempt
  Money Market(3),(4)              Very low                $3,000
 Treasury Money
  Market Trust(4)                  Very low                $3,000
 State Money Market(3),(4)**       Very low                $3,000

(1)  Foreign  investing is subject to additional  risks,  which are discussed in
     the funds' prospectuses.

(2)  S&P 500 (Registered Trademark) is a trademark of The McGraw-Hill Companies,
     Inc. and has been licensed for use. The Product is not  sponsored,  sold or
     promoted  by   Standard  &  Poor's,   and   Standard  &  Poor's   makes  no
     representation regarding the advisability of investing in the Product.

(3)  Some  income  may be  subject  to  state  or  local  taxes  or the  federal
     alternative minimum tax.

(4)  An investment in a money market fund is neither  insured nor  guaranteed by
     the U.S.  Government,  and there is no assurance that any of the funds will
     be able to maintain a stable net asset value of $1 per share.

(5)  This Fund may be more  volatile  than a fund that  diversifies  across many
     industries.

 *   The  InveStart (Registered Trademark)  program is available  for  investors
     without the $3,000 initial investment  required to open an IMCO mutual fund
     account.  A mutual fund account can be opened with no initial investment if
     you elect to have monthly automatic investments of at least $50 from a bank
     account.  InveStart  is not  available on  tax-exempt  funds or the S&P 500
     Index Fund. The minimum initial investment for IRAs is $250, except for the
     $2,000 minimum  required for the S&P 500 Index Fund. IRAs are not available
     for tax-exempt  funds. The Growth and Tax Strategy Fund is not available as
     an  investment  for your IRA  because  the  majority  of its  income is tax
     exempt.

**   California,  Florida,  New York,  Texas,  and Virginia funds available to
     residents only.  

Non-deposit investment products are not insured by the FDIC, are not deposits or
other  obligations  of, or guaranteed  by, USAA Federal  Savings  Bank,  and are
subject to investment risks, and may lose value.

For more complete  information about the mutual funds managed and distributed by
USAA IMCO,  including  charges and expenses,  please call  1-800-531-8181  for a
prospectus. Read it carefully before you invest.








Message from the President

On June 14, 1998, my wife attended a baby shower given for her daughter, Andrea.
That evening, in addition to many nice gifts, Andrea had another surprise, a new
baby boy,  James Kade  Broyles.  James was our fourth  grandchild  to receive an
Investart(Registered  Trademark)  account.  His  account is in the USAA Growth &
Income  Fund.  These  accounts  point up at this  time  some  things I have long
believed.

[Photograph of Michael J. C. Roth, CFA, President and Vice Chairman of the Board
appears here]

Shortly  after we opened  James'  account,  the stock  market  began to feel the
effects  of  long-simmering  problems.  There  was the Asian  crisis,  Russia in
turmoil,  a worsening trade deficit,  and very high stock valuations.  Suddenly,
the mood  changed.  There were several days of market drops well over 100 points
on the Dow. The August 8 edition of The Economist has a picture of a bear on the
cover  under the  caption  "Grin and bear it." So, how do we feel about the four
InveStart accounts? We feel just fine!

The reason is that we have a match between our objective and our risk tolerance.
These  accounts  are aimed at events 15 to 17 years from now,  college  for four
grandchildren.  We are  certain  that  between  then and now,  the  market  will
fluctuate.  I think we're better off to keep adding to the  InveStart  accounts,
because I believe the risk and potential reward are in harmony.

Whatever  your  investment  situation,  I believe it is possible to achieve this
kind of match  between  risk and  potential  reward  that can help you with your
investment program.

Sincerely,

Michael J.C. Roth, CFA
President and
Vice Chairman of the Board


Past performance is no guarantee of future results.

A  systematic  plan,  such as  Investart,  does not  assure a profit or  protect
against loss in declining markets.

For more  information  about mutual funds managed and  distributed by USAA IMCO,
including charges and expenses, please call for a prospectus.  Read it carefully
before investing.








Investment Review

USAA SCIENCE & TECHNOLOGY FUND

OBJECTIVE: Long-term capital appreciation.

TYPES OF INVESTMENTS: Primarily common stocks.

- --------------------------------------------------------------------------------
                                                                 7/31/98
- --------------------------------------------------------------------------------
  Net Assets                                                 $111.3 Million
  Net Asset Value Per Share                                      $11.17
- --------------------------------------------------------------------------------


- --------------------------------------------------------------------------------
AVERAGE ANNUAL TOTAL RETURNS AS OF 7/31/98
- --------------------------------------------------------------------------------
  1 Year                                                         11.70%(+)
- --------------------------------------------------------------------------------


(+) The Fund commenced operations on August 1, 1997.

Total  return   equals   income  yield  plus  share  price  change  and  assumes
reinvestment of all dividends and capital gain distributions.  No adjustment has
been made for taxes payable by shareholders on their reinvested income dividends
and capital gain  distributions.  The  performance  data quoted  represent  past
performance and are not an indication of future results.  Investment  return and
principal value of an investment will fluctuate,  and an investor's shares, when
redeemed, may be worth more or less than their original cost.








CUMULATIVE PERFORMANCE COMPARISON

A chart in the form of a line graph appears here, illustrating the comparison of
a $10,000  hypothetical  investment in the USAA Science & Technology  Fund,  the
Lipper Science & Technology Funds Average,  and the S&P 500 Index for the period
of 08/01/97 through 07/31/98. The data points from the graph are as follows:

                                       Lipper Science &
               USAA Science &          Technology Funds       S&P 500
               Technology Fund             Average             Index
              -----------------        ----------------      ----------

08/01/97         $10,000                   $10,000           $10,000
08/31/97           9,380                    10,040             9,440
09/30/97           9,800                    10,561             9,957
10/31/97           9,200                     9,562             9,625
11/30/97           9,240                     9,454            10,070
12/31/97           9,070                     9,126            10,243
01/31/98           9,450                     9,341            10,356
02/28/98          10,540                    10,414            11,102
03/31/98          10,660                    10,630            11,670
04/30/98          11,020                    11,051            11,790
05/31/98          10,390                    10,248            11,588
06/30/98          11,170                    10,993            12,058
07/31/98          11,170                    10,789            11,931

Data since inception on 8/1/97 through 7/31/98

The graph illustrates the comparison of a $10,000 hypothetical investment in the
USAA  Science &  Technology  Fund to the S&P 500 Index and the Lipper  Science &
Technology  Funds  Average,  an  average  performance  level  of all  science  &
technology  funds,  as  reported  by  Lipper  Analytical   Services,   Inc.,  an
independent  organization that monitors the performance of mutual funds. The S&P
500 Index is an unmanaged index representing the average  performance of a group
of 500 widely held,  publicly traded stocks. It is not possible to invest in the
S&P 500 Index.








Message from the Manager

[Photograph of Portfolio Manager, Curt Rohrman, CFA, appears here]

"It's different this time."  Investors  spend quite a bit of time  contemplating
whether this economic cycle and this bull market are different from the past. We
believe  everything  is  in  fact  different  this  time,  with  scientific  and
technological developments at the root of the change.

STRATEGY
Your USAA Science & Technology Fund seeks to exploit these changes. We invest in
a broad spectrum of  outstanding  companies,  each  developing  technologies  to
ensure  that life  will be not just  different,  but  better -  technologies  as
diverse  as  internet  phone  calls,   enterprise  resource  planning  software,
treatments for  Parkinson's and  Alzheimer's,  agricultural  biotechnology,  and
multiwave array seismic surveys.

FUND PERFORMANCE
The stock  market's  performance  during the  latest  six  months was  certainly
different from the initial six months of the USAA Science & Technology Fund. The
Fund performed well during the most recent period,  with a total return of 18.2%
from January 31, 1998 to July 31, 1998,  compared  with a 15.2% total return for
the S&P 500 Index.(1)  Technology and  healthcare  stocks  contributed  gains in
excess of the  overall  market,  while our  broad-based  approach  dampened  the
volatility inherent in traditional technology stocks. Other technology funds, as
measured by Lipper's average,(2) increased 15.8% over the past 6 months.

(1)  Your  Fund's  total  return  since  inception  on  8/1/97  is  11.7%.  Past
     performance is no guarantee of future results.
(2)  See page 4 for the Lipper Average definition.

OUTLOOK
Our outlook for science and technology  stocks remains  bullish for the near and
long term horizons - largely because we believe technology is a critical element
sustaining  this  economic  cycle  and this  bull  market.  Just a few  examples
include:  technology  provides better  information for accurate  measurement and
management of production cycles on a micro and a macro level;  technology allows
productivity  enhancements  sufficient  to offset  moderate  increases  in labor
costs; and technology  affords  lower-cost  healthcare  through  substitution of
pharmaceuticals for hospital days.


- ------------------------------------------
        TOP 10 EQUITY HOLDINGS  
           (% OF NET ASSETS)
- ------------------------------------------
Cisco Systems                      3.6
Dell Computer                      3.4
Medtronic                          3.1
American International Group       3.0
Schering-Plough                    3.0
Applied Materials                  3.0
CVS                                2.9
Pfizer                             2.9
Lucent Technologies                2.8
Intel                              2.8
- ------------------------------------------


- ------------------------------------------
            TOP 10 INDUSTRIES
            (% OF NET ASSETS)
- ------------------------------------------
Drugs                              9.9
Electronics-Semiconductors         9.0
Computer Software & Service        8.4
Communication Equipment            6.3
Computer-Networking                5.8
Computer-Hardware                  5.5
Medical Products & Supplies        5.3
Retail-Drugs                       5.0
Healthcare-Diversified             5.0
Equipment-Semiconductors           4.4
- ------------------------------------------


See page 8 for a complete listing of the Portfolio of Investments.









Independent Auditors' Report

The Shareholders and Board of Directors

USAA SCIENCE & TECHNOLOGY FUND:
We have audited the accompanying statement of assets and liabilities,  including
the portfolio of investments of the USAA Science & Technology  Fund, a portfolio
of USAA Mutual  Fund,  Inc.,  as of July 31, 1998 and the related  statement  of
operations,  the statement of changes in net assets,  and financial  highlights,
presented in note 7 to the financial  statements,  for the period from August 1,
1997  (commencement  of  operations)  through  July 31,  1998.  These  financial
statements  and financial  highlights  are the  responsibility  of the Company's
management.  Our  responsibility  is to express  an  opinion on these  financial
statements and financial highlights based on our audit.

We conducted our audit in accordance with generally accepted auditing standards.
Those standards  require that we plan and perform the audit to obtain reasonable
assurance  about whether the financial  statements and financial  highlights are
free of material  misstatement.  An audit includes  examining,  on a test basis,
evidence supporting the amounts and disclosures in the financial  statements and
financial  highlights.  Our procedures included confirmation of securities owned
as of July 31, 1998, by correspondence  with the custodian and brokers. An audit
also includes assessing the accounting principles used and significant estimates
made by  management,  as well as  evaluating  the  overall  financial  statement
presentation.  We believe  that our audit  provides a  reasonable  basis for our
opinion.

In our opinion,  the financial  statements and financial  highlights referred to
above present fairly, in all material  respects,  the financial  position of the
USAA  Science  &  Technology  Fund as of  July  31,  1998,  the  results  of its
operations,  the changes in its net assets, and the financial highlights for the
period from August 1, 1997  (commencement of operations)  through July 31, 1998,
in conformity with generally accepted accounting principles.

                                   KMPG Peat Marwick LLP

San Antonio, Texas
September 4, 1998








USAA SCIENCE & TECHNOLOGY FUND
PORTFOLIO OF INVESTMENTS

July 31, 1998
 
                                                                        Market
   Number                                                               Value
 of Shares                 Security                                     (000)
- --------------------------------------------------------------------------------

                      COMMON STOCKS (97.7%)

               Advertising/Marketing (2.3%)
   58,000      Snyder Communications, Inc. *                            $  2,606
                                                                     -----------
               Chemicals (2.2%)
   44,000      Monsanto Co.                                                2,492
                                                                     -----------
               Communication Equipment (6.2%)
   34,000      Lucent Technologies, Inc.                                   3,143
  104,000      Pairgain Technologies, Inc. *                               1,404
   32,000      Tellabs, Inc. *                                             2,409
                                                                     -----------
                                                                           6,956
                                                                     -----------
               Computer - Hardware (5.5%)
   35,000      Dell Computer Corp. *                                       3,801
   42,000      Hewlett-Packard Co.                                         2,331
                                                                     -----------
                                                                           6,132
                                                                     -----------
               Computer - Networking (5.8%)
   55,000      Ascend Communications, Inc. *                               2,446
   42,000      Cisco Systems, Inc. *                                       4,021
                                                                     -----------
                                                                           6,467
                                                                     -----------
               Computer - Peripherals (1.0%)
   47,000      Seagate Technology, Inc. *                                  1,069
                                                                     -----------
               Computer Software & Service (8.4%)
   56,000      J.D. Edwards & Co. *                                        2,093
   25,000      Microsoft Corp. *                                           2,748
   49,000      Network Associates, Inc. *                                  2,337
   57,000      Synopsys, Inc. *                                            2,166
                                                                     -----------
                                                                           9,344
                                                                     -----------
               Drugs (9.9%)
   29,000      Pfizer, Inc.                                                3,190
   34,000      Schering-Plough Corp.                                       3,289
   45,000      SmithKline Beecham plc ADR "A"                              2,576
   50,000      Zeneca Group plc ADR                                        1,941
                                                                     -----------
                                                                          10,996
                                                                     -----------
               Electronics - Semiconductors(9.0%)
  112,000      Analog Devices, Inc. *                                      2,408
   37,000      Intel Corp.                                                 3,124
   33,000      Linear Technology Corp.                                     1,974
   42,000      Texas Instruments, Inc.                                     2,491
                                                                     -----------
                                                                           9,997
                                                                     -----------
               Equipment - Semiconductors (4.4%)
   98,000      Applied Materials, Inc. *                                   3,283
   40,000      Tegal Corp. *                                                 150
   65,000      Teradyne, Inc. *                                            1,491
                                                                     -----------
                                                                           4,924
                                                                     -----------
               Finance - Diversified (1.1%)
   25,000      Federal Home Loan Mortgage Corp.                            1,181
                                                                     -----------
               Healthcare - Diversified (5.0%)
   22,000      Bristol-Myers Squibb Co.                                    2,506
   39,000      Johnson & Johnson, Inc.                                     3,013
                                                                     -----------
                                                                           5,519
                                                                     -----------
               Healthcare - Specialized Services (3.7%)
   96,000      HBO & Co.                                                   2,829
   20,000      IMS Healthcare, Inc.                                        1,256
                                                                     -----------
                                                                           4,085
                                                                     -----------
               Hospitals (2.1%)
   79,000      Tenet Healthcare Corp. *                                    2,365
                                                                     -----------
               Insurance - Multi-Line Companies (3.0%)
   22,000      American International Group, Inc.                          3,318
                                                                     -----------
               Internet Services (0.4%)
    8,000      broadcast.com, Inc. *                                         437
                                                                     -----------
               Major Regional Banks (3.4%)
   30,000      First Tennessee National Corp.                                941
   13,000      Fleet Financial Group, Inc.                                 1,117
   25,000      Mellon Bank Corp.                                           1,685
                                                                     -----------
                                                                           3,743
                                                                     -----------
               Medical Products & Supplies(5.3%)
   27,000      Boston Scientific Corp. *                                   2,069
   55,000      Medtronic, Inc.                                             3,407
   60,000      Nanogen, Inc. *                                               450
                                                                     -----------
                                                                           5,926
                                                                     -----------
               Money Center Banks (1.9%)
   36,000      First Union Corp.                                           2,169
                                                                     -----------
               Oil & Gas - Drilling/Equipment (1.4%)
   15,000      BJ Services Co. *                                             316
   20,000      Schlumberger Ltd.                                           1,211
                                                                     -----------
                                                                           1,527
                                                                     -----------
               Retail - Drugs (5.0%)
   78,000      CVS Corp.                                                   3,198
   77,000      Duane Reade, Inc. *                                         2,324
                                                                     -----------
                                                                           5,522
                                                                     -----------
               Services - Commercial & Consumer (2.7%)
   59,000      Applied Graphics Technologies, Inc. *                       3,046
                                                                     -----------
               Services - Data Processing (2.4%)
   75,000      Sungard Data Systems, Inc. *                                2,672
                                                                     -----------
               Telecommunications - Long Distance (3.1%)
   10,000      MCI Communications Corp.                                      648
   53,000      WorldCom, Inc. *                                            2,802
                                                                     -----------
                                                                           3,450
                                                                     -----------
               Telephones (2.5%)
   68,000      SBC Communications Corp.                                    2,780
                                                                     -----------

               Total common stocks (cost: $96,324)                       108,723
                                                                     -----------

 Principal 
  Amount
  (000)
- ------------
                      SHORT-TERM (3.4%)
               U.S. Government & Agency Issues
   $3,778      Federal Home Loan Mortgage Corp.,
                 5.56%, 8/03/98  (cost: $3,777)                            3,777
                                                                     -----------
               Total investments (cost: $100,101)                       $112,500
                                                                     ===========







USAA SCIENCE & TECHNOLOGY FUND
NOTES TO PORTFOLIO OF INVESTMENTS

July 31, 1998

GENERAL NOTES
Market values of securities are determined by procedures and practices discussed
in note 1 to the financial statements.

The cost of securities for federal income tax purposes is approximately the same
as that reported in the financial statements.

The percentages shown represent the percentage of the investments to net assets.
Investments in foreign securities were 5.1% of net assets at July 31, 1998.

ADR - American Depositary Receipts are receipts issued by a U.S. bank evidencing
ownership of foreign shares. Dividends are paid in U.S. dollars.


SPECIFIC NOTES
* Non-income producing.


See accompanying notes to financial statements.







USAA SCIENCE & TECHNOLOGY FUND    
STATEMENT OF ASSETS AND LIABILITIES
(IN THOUSANDS)

July 31, 1998


ASSETS
   Investments in securities, at market value
     (identified cost of $100,101)                                   $  112,500
   Cash                                                                     175
   Receivables:
      Capital shares sold                                                   340
      USAA Transfer Agency Company                                            2
      Dividends                                                              55
                                                                     -----------
            Total assets                                                113,072
                                                                     -----------
LIABILITIES
   Securities purchased                                                   1,336
   Capital shares redeemed                                                  273
   USAA Investment Management Company                                        72
   Accounts payable and accrued expenses                                     73
                                                                     -----------
         Total liabilities                                                1,754
                                                                     -----------
            Net assets applicable to capital shares outstanding      $  111,318
                                                                     ===========
REPRESENTED BY:
   Paid-in capital                                                   $   99,481
   Accumulated net realized loss on investments                            (562)
   Net unrealized appreciation of investments                            12,399
                                                                     -----------
            Net assets applicable to capital shares outstanding        $111,318
                                                                     ===========
   Capital shares outstanding                                             9,961
                                                                     ===========
   Authorized shares of $.01 par value                                  105,000
                                                                     ===========
   Net asset value, redemption price, and offering price per share   $    11.17
                                                                     ===========


See accompanying notes to financial statements.








USAA SCIENCE & TECHNOLOGY FUND
STATEMENT OF OPERATIONS
(IN THOUSANDS)

Year ended July 31, 1998*

Net investment loss:
   Income:
      Dividends                                                      $      294
      Interest                                                              208
                                                                     -----------
         Total income                                                       502
                                                                     -----------
   Expenses:
      Management fees                                                       522
      Transfer agent's fees                                                 249
      Custodian's fees                                                       46
      Postage                                                                32
      Shareholder reporting fees                                              9
      Directors' fees                                                         3
      Registration fees                                                      82
      Professional fees                                                      32
      Other                                                                   5
                                                                     -----------
         Total expenses                                                     980
                                                                     -----------
            Net investment loss                                            (478)
                                                                     -----------
Net realized and unrealized gain/(loss) on investments:
   Net realized loss                                                       (562)
   Change in net unrealized appreciation/depreciation                    12,399
                                                                     -----------
            Net realized and unrealized gain                             11,837
                                                                     -----------
Increase in net assets resulting from operations                     $   11,359
                                                                     ===========

* Fund commenced operations August 1, 1997.

See accompanying notes to financial statements.







USAA SCIENCE & TECHNOLOGY FUND
STATEMENT OF CHANGES IN NET ASSETS 
(IN THOUSANDS)

 Year ended July 31, 1998*

From operations:
   Net investment loss                                               $     (478)
   Net realized loss on investments                                        (562)
   Change in net unrealized appreciation/
     depreciation of investments                                         12,399
                                                                     -----------
      Increase in net assets resulting from operations                   11,359
                                                                     -----------
From capital share transactions:
   Proceeds from shares sold                                            120,796
   Cost of shares redeemed                                              (20,837)
                                                                     -----------
      Increase in net assets from capital share transactions             99,959
                                                                     -----------
Net increase in net assets                                              111,318
Net assets:
   Beginning period                                                          --
                                                                     -----------
   End of period                                                     $  111,318
                                                                     ===========
Change in shares outstanding:
   Shares sold                                                           11,974
   Shares redeemed                                                       (2,013)
                                                                     -----------
      Increase in shares outstanding                                      9,961
                                                                     ===========


* Fund commenced operations August 1, 1997.

See accompanying notes to financial statements.





USAA SCIENCE & TECHNOLOGY FUND
NOTES TO FINANCIAL STATEMENTS

July 31, 1998


(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
USAA MUTUAL FUND, INC. (the Company),  registered  under the Investment  Company
Act of 1940,  as  amended,  is a  diversified,  open-end  management  investment
company  incorporated  under the laws of  Maryland  consisting  of ten  separate
funds. The information presented in this annual report pertains only to the USAA
Science & Technology Fund (the Fund). The Fund's primary investment objective is
long-term capital appreciation. USAA Investment Management Company (the Manager)
seeks to achieve this  objective by investing at least 80% of the Fund's  assets
in equity  securities  that are expected to benefit from the development and use
of scientific and technological advances and improvements.

A.  Security  valuation - The value of each  security is  determined  (as of the
close of  trading  on the New  York  Stock  Exchange  on each  business  day the
Exchange is open) as set forth below:

1.  Portfolio  securities,  except as  otherwise  noted,  traded  primarily on a
domestic  securities  exchange  are  valued  at the  last  sales  price  on that
exchange.

2.  Over-the-counter  securities  are priced at the last sales  price or, if not
available, at the average of the bid and asked prices.

3.  Securities  purchased  with  maturities  of 60 days or less  are  stated  at
amortized cost which approximates market value.

4.  Securities  which cannot be valued by the methods set forth  above,  and all
other assets,  are valued in good faith at fair value,  using methods determined
by the Manager under the general supervision of the Board of Directors.

B. Federal taxes - The Fund's policy is to comply with the  requirements  of the
Internal  Revenue Code  applicable  to  regulated  investment  companies  and to
distribute  substantially all of its income to its shareholders.  Therefore,  no
federal  income or excise  tax  provision  is  required.  As a result of certain
permanent  differences between book and tax basis accounting,  reclassifications
have  been  made  on  the  statement  of  assets  and  liabilities  to  decrease
accumulated net investment loss and decrease paid-in capital by $478,000.

C.  Investments in securities - Security  transactions  are accounted for on the
date the securities are purchased or sold (trade date).  Gain or loss from sales
of investment  securities  is computed on the  identified  cost basis.  Dividend
income,  less foreign taxes, if any, is recorded on the ex-dividend date. If the
ex-dividend  date has passed,  certain  dividends  from foreign  securities  are
recorded upon  notification.  Interest  income is recorded on the accrual basis.
Discounts and premiums on short-term  securities  are amortized over the life of
the respective securities.

D. Use of estimates - The preparation of financial statements in conformity with
generally accepted  accounting  principles requires management to make estimates
and  assumptions   that  may  affect  the  reported  amounts  in  the  financial
statements.


(2) LINES OF CREDIT
The Fund  participates  with other USAA funds in two joint short-term  revolving
loan  agreements  totaling  $850  million,  one with  USAA  Capital  Corporation
(CAPCO),  an affiliate of the Manager ($750 million  uncommitted),  and one with
NationsBank  of  Texas,  N.A.  ($100  million  committed).  The  purpose  of the
agreements is to meet  temporary or emergency cash needs,  including  redemption
requests that might  otherwise  require the untimely  disposition of securities.
Subject to availability under its agreement with CAPCO, the Fund may borrow from
CAPCO an amount up to 5% of the Fund's  total assets at CAPCO's  borrowing  rate
with no markup.  Subject to availability  under its agreement with  NationsBank,
the Fund may borrow from NationsBank an amount which,  when added to outstanding
borrowings  under the CAPCO  agreement,  does not exceed 25% of the Fund's total
assets at NationsBank's borrowing rate plus a markup. The Fund had no borrowings
under either of these agreements during the year ended July 31, 1998.


(3) DISTRIBUTIONS
Distributions  of  net  investment  income  and  realized  gains  from  security
transactions not offset by capital losses are made in the succeeding fiscal year
or as  otherwise  required  to avoid the payment of federal  taxes.  At July 31,
1998,  the Fund had capital loss  carryovers  for federal income tax purposes of
approximately  $470,000 which, if not offset by subsequent  capital gains,  will
expire in 2006. It is unlikely that the Fund's Board of Directors will authorize
a  distribution  of capital gains  realized in the future until the capital loss
carryovers have been utilized or expired.


(4) INVESTMENT TRANSACTIONS
Cost of purchases and proceeds from sales of  securities,  excluding  short-term
securities,  for the year  ended July 31,  1998 were  $146.2  million  and $49.3
million, respectively.

Gross  unrealized  appreciation  and  depreciation of investments as of July 31,
1998 was $17.2 million and $4.8 million, respectively.


(5) TRANSACTIONS WITH MANAGER
A. Management  fees - The investment  policies of the Fund and management of the
Fund's  portfolio are carried out by USAA  Investment  Management  Company.  The
Fund's management fees are computed at .75% of its annual average net assets.

B. Transfer agent's fees - USAA Transfer Agency Company,  d/b/a USAA Shareholder
Account Services, an affiliate of the Manager,  provides transfer agent services
to the Fund based on an annual  charge of $23.50 per  shareholder  account  plus
out-of-pocket expenses.

C.  Underwriting  services - The Manager  provides  exclusive  underwriting  and
distribution  of the Fund's  shares on a  continuing  best  efforts  basis.  The
Manager receives no commissions or fees for this service.

D. Brokerage services - USAA Brokerage Services, a discount brokerage service of
the Manager,  may execute  portfolio  transactions  for the Fund.  The amount of
brokerage commissions paid to USAA Brokerage Services during the year ended July
31, 1998 was $12,000.


(6) TRANSACTIONS WITH AFFILIATES
USAA Investment Management Company is indirectly wholly owned by United Services
Automobile  Association  (the  Association),   a  large,  diversified  financial
services institution. At July 31, 1998, the Association and its affiliates owned
2 million shares (20.1%) of the Fund.

Certain directors and officers of the Fund are also directors,  officers, and/or
employees  of the Manager.  None of the  affiliated  directors or Fund  officers
received any compensation from the Fund.


(7) FINANCIAL HIGHLIGHTS
Per share operating performance for a share outstanding throughout the period is
as follows:

                                                                     Year Ended
                                                                      July 31,
                                                                       1998*
                                                                  --------------
Net asset value at beginning of period                             $   10.00
Net investment loss                                                     (.07)(a)
Net realized and unrealized gain                                        1.24
                                                                  --------------
Net asset value at end of period                                   $   11.17
                                                                  ==============
Total return (%)                                                       11.70
Net assets at end of period (000)                                  $ 111,318
Ratio of expenses to average net assets (%)                             1.42
Ratio of net investment loss to average net assets (%)                  (.69)
Portfolio turnover (%)                                                 76.31


*  Fund commenced operations August 1, 1997.
(a)Calculated using weighted average shares.






DIRECTORS
Robert G. Davis, Chairman of the Board
Michael J.C. Roth, President and Vice Chairman of the Board
John W. Saunders, Jr., Vice President
Barbara B. Dreeben
Howard L. Freeman, Jr.
Robert L. Mason
Richard A. Zucker

INVESTMENT ADVISER, UNDERWRITER AND DISTRIBUTOR
USAA Investment Management Company
9800 Fredericksburg Road
San Antonio, Texas 78288

TRANSFER AGENT
USAA Shareholder Account Services
9800 Fredericksburg Road
San Antonio, Texas 78288

CUSTODIAN
State Street Bank and Trust Company
P.O. Box 1713
Boston, Massachusetts 02105

LEGAL COUNSEL
Goodwin, Procter & Hoar LLP
Exchange Place
Boston, Massachusetts 02109

INDEPENDENT AUDITORS
KPMG Peat Marwick LLP
112 East Pecan, Suite 2400
San Antonio, Texas 78205

Telephone Assistance Hours
Call toll free - Central Time
Monday - Friday 8:00 a.m. to 8:00 p.m.
Saturdays 8:30 a.m. to 5:00 p.m.

For Additional Information On Mutual Funds
1-800-531-8181, (in San Antonio) 456-7211
For account servicing, exchanges or redemptions
1-800-531-8448, (in San Antonio) 456-7202

Recorded Mutual Fund Price Quotes
24-Hour Service (from any phone)
1-800-531-8066, (in San Antonio) 498-8066

Mutual Fund TouchLine(Registered Trademark)
(from Touchtone phones only)
For account balance, last transaction or fund prices
1-800-531-8777, (in San Antonio) 498-8777




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