FOR

AN ESSAY

TOWARDS A

MATERIA MEDICA

OF THE

UNITED-STATES.

By BENJAMIN SMITH BARTON, M. D.

PROFESSOR OF MATERIA MEDICA, NATURAL HISTORY, AND BOTANY,

IN THE UNIVERSITY OF PENNSYLVANIA.

PART SECOND.

hanc etiam, MECENAS, aspice partem.

PHILADELPHIA:

PRINTED, FOR THE AUTHOR,

BY A. AND G. WAY.

DISTRICT OF PENNSYLVANIA.

SEAL

TO WIT:

BE it remembered, that on the fourteenth day of February, in the twenty-eighth year of the Independence of the United States of America, Benjamin Smith Barton, of the said District, M. D. hath deposited in this office, the Title of a Book, the right whereof he claims as Proprietor, in the words following, to wit:

Collections for an Essay towards a Materia Medica of the "United States. By Benjamin Smith Barton, M. D. Professor of "Materia Medica, Natural History, and Botany, in the University "of Pennsylvania. Part Second.

Hanc etiam, Mæcenas, aspice partem."

In conformity to the Act of the Congress of the United States, entituled "An Act for the Encouragement of Learning, by securing the Copies of Maps, Charts and Books, to the Authors and Proprietors, of such Copies, during the times therein mentioned, And also to the Act, entituled "An Act, Supplementary to an Act entituled "An Act for the encouragement of Learning, by securing the Copies of Maps, Charts and Books, to the Authors and Proprietors of such Copies, during the times therein mentioned, and extending the Benefits thereof to the arts of Designing, Engraving and Etching Historical and other Prints."

D. CALDWELL,

Clerk of the District of Pennsylvania.