"The Witches Pharmacopoeia" is one of the better academic works dealing with the use of herbs and other things within the traditional workings of witchery both real and fraudulent. Speaking of Shakespearean verse, ancient tales from pagan tradition, and the burning times, it speaks of more than just wolfsbane and nightshade. Delivered by the assistant librarian to the US Surgeon General at the time, the work sums up a tradition found through centuries of grimoires and other literature within the occult.