Observations on the Operation and Use of Mercury in the Venereal Disease

In 1772, syphilis ravaged Europe with terrifying efficiency, and mercury was the only treatment physicians had. This treatise by Scottish physician Andrew Duncan represents a remarkable historical document: a careful, rational examination of the most controversial medicine of the age. Duncan methodically catalogs mercury's properties, its various preparations, and the hotly debated question of how exactly it functioned against venereal disease. What emerges is not merely a technical manual but a window into the moral and scientific anxieties of Enlightenment medicine: the desperate need to cure, the awareness of danger, and the fragile logic of treating poison with poison. Duncan argues fiercely for understanding the "principles behind medicinal actions" rather than blindly administering mercury, demonstrating an empiricist's faith that would eventually revolutionize medical practice. For historians of medicine and anyone fascinated by the messy, uncertain path from folklore to science, this treatise offers unequaled access to the mind of an 18th-century physician grappling with a plague.