SECRETARY TO THE ROYAL SOCIETY OF LONDON; FELLOW OF
THE ROYAL SOCIETY OF EDINBURGH;

MEMBER OF THE

GEOLOGICAL SOCIETY; PROFESSOR OF CHEMISTRY IN THE
ROYAL INSTITUTION OF GREAT BRITAIN; AND PROFESSOR OF
CHEMISTRY AND MATERIA MEDICA TO THE APOTHECARIES'
COMPANY.

LONDON:

JOHN MURRAY, ALBEMARLE-STREET.

1817.

16.

Printed by W. Bulmer and Co.
Cleveland-row, St. James's.

THE

QE 35
B7

FOLLOWING PAGES ARE DEDICATED

TO THE

PRESIDENT AND MEMBERS

OF THE

ROYAL INSTITUTION OF GREAT BRITAIN.

BY

THEIR FAITHFUL SERVANT,

THE AUTHOR.