<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AT SEPTEMBER 30, 1996 AND THE CONSOLIDATED STATEMENT
OF INCOME FOR THE QUARTER ENDED SEPTEMBER 30, 1996 AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                          JUN-30-1997
<PERIOD-START>                             JUL-01-1996
<PERIOD-END>                               SEP-30-1996
<CASH>                                      10,611,476
<SECURITIES>                                21,811,284
<RECEIVABLES>                                5,594,149
<ALLOWANCES>                                   149,196
<INVENTORY>                                    524,289
<CURRENT-ASSETS>                            25,518,802
<PP&E>                                      32,184,192
<DEPRECIATION>                              21,168,346
<TOTAL-ASSETS>                              59,611,233
<CURRENT-LIABILITIES>                        7,054,869
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                     3,921,287
<OTHER-SE>                                  47,235,077
<TOTAL-LIABILITY-AND-EQUITY>                59,611,233
<SALES>                                      8,692,500
<TOTAL-REVENUES>                             9,781,748
<CGS>                                        4,411,164
<TOTAL-COSTS>                                6,864,890
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                             12,822,768
<INCOME-TAX>                                 3,565,000
<INCOME-CONTINUING>                          9,257,768
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                 9,257,768
<EPS-PRIMARY>                                     7.72
<EPS-DILUTED>                                     7.72