—By Lucius E. Sayre, B.S., Ph.M., Dean of the School of Pharmacy; Professor of Materia Medica in the University of Kansas; Member of the Committee of Revision of the United States Pharmacopoeia; Director of Drug Laboratory for the State of kansas. An introduction to the study of the vegetable kingdom and the vegetable and animal drugs comprising the botanical and physical characteristics, source, constituents, pharmacopoeial preparations, insects injurious to drugs, and pharmacal botany. Fourth edition, revised; 302 illustrations; 606 pages. Price $4.50 net. P. Blakiston's Son & Co., Philadelphia