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TO CASPAR WISTAR, M. D.
PROFESSOR OF ANATOMY, SURGERY, AND
MIDWIFERY,
IN THE UNIVERSITY OF PENNSYLVANIA,
ONE OF THE VICE PRESIDENTS
OF THE
AMERICAN PHILOSOPHICAL SOCIETY, &c. &c.
THE FOLLOWING PAGES
ARE INSCRIBED, AS A MARK OF ESTEEM,
FOR
HIS INGENUOUS FRIENDSHIP, AS A MAN,
AND
HIS UNREMITTED EXERTIONS
IN THE
CAPACIOUS FIELD OF GENERAL SCIENCE,
AS A PHILOSOPHER ;
BY HIS FRIEND,
THE AUTHOR.
