"One of the earliest treatises devoted to the bezoar of mystic/medicinal repute and similar animal calculi. Numerous chapters provide detailed descriptions and discussions of the various types as imitations and substitutes, the latter principally taken from similarly shaped concretions or fossils of the mineral kingdom. Replete with historical notes, reflecting the considerable importance attached to bezoars as antidotes to poisons or as ingredients in various medical concoctions." Sinkankas 477.