An oration, delivered February 4, 1774, before the American Philosophical Society, held at Philadelphia : Containing, an enquiry into the natural history of medicine among the Indians in North-America, and a comparitive view of their diseases and remedies, with those of civilized nations. : Together with an appendix, containing, proofs and illustrations. / By Benjamin Rush, M.D. Professor of chemistry in the College of Philadelphia. ; [Four lines from Malebranche in French].