<ARTICLE>5
       
                                                                                     
<PERIOD-TYPE>                                                            3-MOS
<FISCAL-YEAR-END>                                                                         Dec-31-1995
<PERIOD-END>                                                                              Jun-30-1996
<CASH>                                                                                          6,972
<SECURITIES>                                                                                   30,936
<RECEIVABLES>                                                                                       0
<ALLOWANCES>                                                                                        0
<INVENTORY>                                                                                         0
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<PP&E>                                                                                         28,748
<DEPRECIATION>                                                                                 23,325
<TOTAL-ASSETS>                                                                                 49,069
<CURRENT-LIABILITIES>                                                                           6,490
<BONDS>                                                                                             0
<COMMON>                                                                                           15
<PREFERRED-MANDATORY>                                                                               0
<PREFERRED>                                                                                         1
<OTHER-SE>                                                                                     36,607
<TOTAL-LIABILITY-AND-EQUITY>                                                                   49,069
<SALES>                                                                                             0
<TOTAL-REVENUES>                                                                                3,018
<CGS>                                                                                               0
<TOTAL-COSTS>                                                                                       0
<OTHER-EXPENSES>                                                                                8,381
<LOSS-PROVISION>                                                                                    0
<INTEREST-EXPENSE>                                                                                 92
<INCOME-PRETAX>                                                                               (4,987)
<INCOME-TAX>                                                                                        0
<INCOME-CONTINUING>                                                                           (4,987)
<DISCONTINUED>                                                                                      0
<EXTRAORDINARY>                                                                                     0
<CHANGES>                                                                                           0
<NET-INCOME>                                                                                  (4,987)
<EPS-PRIMARY>                                                                                  (0.16)
<EPS-DILUTED>                                                                                  (0.16)