SCIENCE 



Niw SEKua TP-pTn AV MavI 1Q14- Sinqlb Copies, 16 Cxs. 



T0L.XXXIX. Ko.1009 i.ii.i.ua.1, J.TJ.AI X, xtfiTt anhual Sdbsobiptiom, |5.00 



Drew's Invertebrate Zoology 



The New (2d) Edition 



For this edition Professor Drew has subjected his book to a very 

 searching revision, bringing it into accord with the latest knowledge. 

 His work gives you a working knowledge of comparative anatomy and 

 an appreciation of the adaptation of animals to their environments. 



Prof. John M. Tyler, Amherst College: "It covers the ground well, 

 is clear and very compact. The table of definitions is excellent." 



Invertebrate Zoology. By Gilman A.Drew, Ph.D., Assistant Director of the Marine Biological 

 Laboratory, Woods Hole, Mass. 12mo of 213 pages. Cloth, $1.25 net. 



Daugherty's Economic Zoology 



This work is issued, for convenience, in two parts. Part I is a Field 

 and Lahoratary Guide, interleaved for notes. Part II is the textbook 

 part or the Principles. The life and habits are emphasized. 



J. Eemsen Bishop, Ph.D., Eastern High School, Detroit. "The 

 illustrations alone prove the book superior to any other." 



By L. 8. Daugherty, M S.. Ph.D.. Professor of Science, Missouri Wesleyan College; and M. C 

 Daugherty. Parti — Field and Laboratory Guide. 12mo of 275 pages, interleaved. Cloth, $1,25 net. 

 Part II — Principles. 12moof 406 pages, illustrated. Cloth, $2.00 net. 



McFarland's Biology New (2d) Edition 



This work has chapters on the origin of life and its manifestations, 

 the cell and cell division, reproduction, ontogenesis, conformity to 

 type, divergence, structural and blood relationship, parasitism, mutila- 

 tion and regeneration, grafting, senescence, etc. 



Prof. W. R. McCoNNELL, Pennsylvania State College: "It has some 

 admirable features, the most valuable of which is the careful resume 

 of the subjects of heredity and evolution." 



Biology. General and Medical. By Joseph McFarland. M D., Professor of Pathology and Bacteriol- 

 ogy, Medico-Chirurgical College, Philadelphia. 12mo of 457 pages, illustrated. Cloth, $1.75 net. 



Stiles' Nutritional Physiology 



Dr. Stiles takes up each organ, each secretion concerned with the pro- 

 cess of digestion, discussing the part each plays in the physiology of 

 nutrition. A valuable feature is Dr. Stiles' happy use of homely 

 similes. 



Prof. Colin C. Stbwabt, Dartmouth College: It is remarkable for 

 the fineness of its diction and for its clear presentation of the subject." 



Nutritional Physiology. By Percy G. Stiles, Assistant Professor of Physiology in Simmons College, 

 Boston. 12mo of 271 pages, illustrated. Cloth, $1.25 net. 



W. B. SAUNDERS COMPANY West Washington Sq., PhUa. 



