LATE OF PEMBROKE HALL, CAMBRIDGE:
FORMERLY PRESIDENT OF THE ROYAL MEDICAL, NATURAL HISTORY,
AND CHEMICAL SOCIETIES OF EDINBURGH.

LONDON:

PRINTED FOR LONGMAN, HURST, REES, ORME, AND BROWN,
PATERNOSTER-ROW.
1819.

Printed by Strahan and Spottiswoode,
Printers-Street, London.

TO

Sir JAMES MACKINTOSH, M.P.