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TO

CASPAR WISTAR, M. D.

PROFESSOR OF ANATOMY IN THE UNIVERSITY OF PENNSYLVANIA,

PRESIDENT OF THE PENNSYLVANIA SOCIETY FOR PROMOTING THE ABOLITION OF SLAVERY, &c.—AND OF THE AMERICAN PHILOSOPHICAL SOCIETY, &c. &c.

THIS LITTLE VOLUME

IS GRATEFULLY AND RESPECTFULLY

INSCRIBED,

BY HIS AFFECTIONATE NEPHEW,

THE AUTHOR.