Essays

An account of the manners of the German inhabitants of Pennsylvania, written 1789

Medical Inquiries And Observations Upon The Diseases Of The Mind

Address to the inhabitants of the British settlements, on the slavery of the negroes in America

Psychopathy : Or, Spirit Healing

Medical Inquiries and Observations

Medical inquiries and observations

An account of the life and character of Christopher Ludwick

An account of the bilious remitting yellow fever as it appeared in the city of Philadelphia

Medical inquiries and observations

Sermons to gentlemen upon temperance and exercise