Introduction to Zoology 



By ROBERT W. HEGNER, Ph.D. 



Assistant Professor of Zoology in the University of Michigan 



Illustrated, Cloth, l2mo, 350 pages, $1.90 

 Only a few animals belonging to the more important phyla, as 

 viewed from an evolutionary standpoint, are considered in this book. 

 They are, however, intensively studied in an endeavor to teach the 

 fundamental principles of zoology in a way that is not possible when 

 a superficial examination of types from all the phyla is made. 

 Morphology is not specially emphasized, but is coordinated with 

 physiology, ecology and behavior, and serves to illustrate by a com- 

 parative study the probable course of evolution. The animals are 

 not treated as inert objects for dissection, but as living organisms 

 whose activities are of fundamental importance. No arguments are 

 necessary to justify the " type course." developed with the problems 

 of organic evolution in mind, and dealing with dynamic as well as 

 static phenomena. 



College Zoology 



By ROBERT W. HEGNER, Ph.D. 



Assistant Professor of Zoology in the University of Michigan 



Illustrated, Cloth, i2mo, 733 pages, $2.60 

 This book is intended to serve as a text for beginning students in 

 universities and colleges, or for students who have already taken a 

 course in general biology and wish to gain a more comprehensive 

 view of the animal kingdom. It differs from many of the college 

 textbooks of zoology now on the market in several important re- 

 spects : (1) the animals and their organs are not only described,, 

 but their functions are pointed out ; (2) the animals described are 

 in most cases native species ; and (3) the relations of the animals 

 to man are emphasized. Besides serving as a textbook, it is be- 

 lieved that this book will be of interest to the general reader, since 

 it gives a bird's-eye view of the entire animal kingdom as we know it 

 at the present time. 



THE MACMILLAN COMPANY 



Publishers 64-66 Fifth Avenue New York 



