<ARTICLE>                     5
       
                             
<PERIOD-TYPE>                   3-MOS
<FISCAL-YEAR-END>                         Dec-31-1996
<PERIOD-END>                              Sep-30-1997
<CASH>                                          9,636
<SECURITIES>                                   26,215
<RECEIVABLES>                                       0
<ALLOWANCES>                                        0
<INVENTORY>                                         0
<CURRENT-ASSETS>                               36,818
<PP&E>                                         30,283
<DEPRECIATION>                                 25,370
<TOTAL-ASSETS>                                 46,306
<CURRENT-LIABILITIES>                           9,360
<BONDS>                                             0
<PREFERRED-MANDATORY>                               0
<PREFERRED>                                         0
<COMMON>                                           20
<OTHER-SE>                                     22,401
<TOTAL-LIABILITY-AND-EQUITY>                   46,306
<SALES>                                             0
<TOTAL-REVENUES>                                  125
<CGS>                                               0
<TOTAL-COSTS>                                       0
<OTHER-EXPENSES>                                8,478
<LOSS-PROVISION>                                    0
<INTEREST-EXPENSE>                                282
<INCOME-PRETAX>                                (8,141)
<INCOME-TAX>                                        0
<INCOME-CONTINUING>                            (8,141)
<DISCONTINUED>                                      0
<EXTRAORDINARY>                                     0
<CHANGES>                                           0
<NET-INCOME>                                   (8,141)
<EPS-PRIMARY>                                   (0.21)
<EPS-DILUTED>                                   (0.21)