OPERATIVE CHEMIST,

Lecturer on Practical Chemistry, on Mineralogy, and on Chemistry applied to the Arts and

Manufactures; Member of the Royal Irish Academy; Fellow of the Linnæan Society;

Member of the Royal Academy of Sciences, and of the Royal Society

of Arts of Berlin, &c. &c.


LONDON:

PRINTED FOR THOMAS BOYS, 7, LUDGATE HILL,

By C. Green, Leicester Street, Leicester Square.

1821.