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AGREEMENT
JOINT FILING OF SCHEDULE 13G
The undersigned hereby agrees to file jointly the Statement on
Schedule 13G (the "Statement") relating to the Common Stock, $.001 par value per
share, of SIBIA Neurosciences, Inc., and any further amendments thereto which
may be deemed necessary pursuant to Regulation 13D or G promulgated under
Section 13 of the Securities Exchange Act of 1934, as amended.
It is understood and agreed that a copy of this Agreement
shall be attached as an exhibit to the Statement, filed on behalf of each of the
parties hereto.
This Agreement may be executed in multiple counterparts, each
of which shall constitute an original, one and the same instrument.
IN WITNESS WHEREOF, each of the undersigned has executed this
Agreement as of the 14 day of February, 1997.
NOVARTIS AG
By: /s/ Xxxxxx Xxxxxxx
--------------------------------
Name: Xxxxxx Xxxxxxx
Title: Authorized Signatory
NOVARTIS PRODUKTE AG
By: /s/ Xxxxxx Xxxxxx
--------------------------------
Name: Xxxxxx Xxxxxx
Title: Authorized Signatory
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