ROBERT HARE, M.D.

EMERITUS PROFESSOR OF CHEMISTRY IN THE UNIVERSITY OF PENNSYLVANIA,

GRADUATE OF YALE COLLEGE AND HARVARD UNIVERSITY,

ASSOCIATE OF THE SMITHSONIAN INSTITUTE, AND

MEMBER OF VARIOUS LEARNED SOCIETIES.

_Verba animi proferre_, vitam impendere vero.

Denounce dark Error and bright Truth proclaim,

Though ghastly Death oppose, with threat’ning aim.

NEW YORK:

PARTRIDGE & BRITTAN, 342 BROADWAY.

1855.