Bartisch on theriac.

George Bartisch is best known as the German ophthalmologist who wrote the mammoth textbook Ophthalmodouleia, printed in 1583. He wrote several other books, most of which were never published. One that he self-published is on Venice Theriac of Andromachus. Common theriac has a long history in medicine from just after Hippocrates. It initially was used for venomous snake bites but later was used for poisonings too. By Bartisch's time it was considered a nearly universal cure-all. In the book, a multitude of ophthalmic and general diseases are listed and then the dose of Theriac is given. Bartisch warned against the many inferior types of theriac available through unscrupulous traveling salespeople. He offered the superior Venice Theriac for sale, compounded by himself in Dresden, Germany, where he resided.