<ARTICLE>    5
<LEGEND>
This schedule contains summary financial information extracted from the
consolidated balance sheets, statements of operations and statements of cash
flows included in the Company's Form 10-Q for the period ended September 30,
1998, and is qualified in its entirety by reference to such financial statements
and notes thereto.
</LEGEND>
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               SEP-30-1999
<CASH>                                           4,099
<SECURITIES>                                    39,118
<RECEIVABLES>                                    4,170
<ALLOWANCES>                                         0
<INVENTORY>                                        793
<CURRENT-ASSETS>                                51,184
<PP&E>                                          54,962
<DEPRECIATION>                                (34,170)
<TOTAL-ASSETS>                                  73,767
<CURRENT-LIABILITIES>                           26,600
<BONDS>                                              0
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                       291,229
<OTHER-SE>                                      20,381
<TOTAL-LIABILITY-AND-EQUITY>                    73,767
<SALES>                                          8,822
<TOTAL-REVENUES>                                29,111
<CGS>                                            2,844
<TOTAL-COSTS>                                        0
<OTHER-EXPENSES>                                60,200
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               1,844
<INCOME-PRETAX>                               (40,902)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                           (40,902)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                  (40,902)
<EPS-BASIC>                                   (1.35)
<EPS-DILUTED>                                   (1.35)