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Vol. XXXVIII. No. 979 T KIDAY, UCTOBER iJ, iyid Ankual Subsoeiption. $5.00 



Drew^s Invertebrate Zoology 



JUST ISSUED— NEW {2d) EDITION 



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

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

 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., Asgistant 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 Laboratory Guide, interleaved for notes. Part II is the textbook 

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



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

 illustrations alone prove the book superior to any other. ' ' 



By L. S. Daugherty, M.S., Ph.D., Professor of Zoology, State Normal School, Kirksville, Mo. ; and 

 M. C. Daugherty, author with Jackson of "Agriculture Through the Laboratory and School 

 Garden." Parti — Field and Laboratory Ouide. 12mo of 275 pages, interleaved. Cloth, $1.25 net. 

 Part II— Prindplee. 12mo of 406 pages, illustrated. Cloth, $2.00 net. 



McFarland's Biology 



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: Generaland Medical. By Joseph McFarland, M.D., Profesaorof Pathology and Bacteriol- 

 ogy, Medico-Chirurgical College, Philadelphia. 12mo of 440 pages, illustrated. Cloth, $1.75 net. 



Stiles' Nutritional Psychology 



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 feature is Dr. Stiles' happy use of homely similes. 



Prof. Colin C. Stewart, 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. 12mu of 271 pages, illustrated. Cloth, $1.26 net. 



W. B. SAUNDERS COMPANY, W.Washington Sq.,Phila. 



