Page:Chronicles of pharmacy (Volume 1).djvu/226

 bdellium, laudanum, asafoetida, gum ammoniacum, opium, and squill are selected as particularly useful; the accounts he gives of treatments since abandoned (some of which are mentioned above, but to these Sprengel adds the application of wool fat to wounds which has been revived since he wrote), are of special interest; and the German historian further justly points out that many remedies re-discovered in modern times were referred to by Dioscorides. Among these are castor oil, though Dioscorides only alludes to the external application of this substance; male fern against tape worms; elm bark for eruptions; horehound in phthisis; and aloes for ulcers. He describes many chemical processes very intelligently, and was the first to indicate means of discovering the adulterations of drugs.

No writer of either ancient or modern times can compare with Claudius Galenus probably in the abundance of his output, but certainly in the influence he exercised over the generations that followed him. For fifteen hundred years the doctrines he formulated, the compound medicines he either introduced or endorsed, and the treatments he recommended commanded almost universal submission among medical practitioners. In Dr. Monk's Roll of the College of Physicians, mention is made of a Dr. Geynes who was admitted to the Fellowship of the College in 1560, "but not until he had signed a recantation of his error in having impugned the infallibility of Galen." This