Within this vintage volume, Smith E. Jelliffe offers the reader an fantastic introduction to the broad subject of Pharmacognosy¿the study of plants or other natural sources of medicinal drugs. Smith Ely Jelliffe (1866 ¿ 1945) was an American psychiatrist, neurologist, and psychoanalyst who spent most of his life in New York City. Jelliffe started began by studying botany and pharmacy, but changed course and began studying neurology in the mid-1890s, followed by psychiatry, neuropsychiatry, and finally psychoanalysis. This wonderfully-illustrated volume is highly recommended for those with an interest botany and pharmacology, and it is not to be missed by collectors of vintage literature of this ilk. Other notable works by this author include: ¿Diseases of the Nervous System: A Text-Book of Neurology and Psychiatry¿, ¿The Modern Treatment of Nervous and Mental Diseases¿, and ¿Sketches in Psychosomatic Medicine¿. Many vintage books such as this are increasingly scarce and expensive. It is with this in mind that we are republishing this book today in an affordable, modern edition complete with the original text and artwork.