WORLD BOOK COMPANY 







THE HOUSE OF APPLIED KNOWLEDGE 



Established, 1905, by Caspar W. Hodgson 



YONKERS-ON-HUDSON, NEW YORK 



2126 PRAIRIE AVENUE, CHICAGO 



World Book Company offers Zoology for col- 

 lege and university use. Modern zoology, 

 the science of animal life, is inseparably 

 linked with the general problems of biology, 

 sociology, and even ethics. Regarded thus 

 broadly, it is a science which cannot be 

 omitted from any adequate system of educa- 

 tion, and the purpose of the present text is 

 to supply a treatment of the subject suffi- 

 ciently modern and comprehensive to meet 

 the needs of this age of social and political 

 reconstruction. It may form the basis of a 

 course to be given preferably in the sopho- 

 more year, and is designed for the use of 

 those who have had little or no previous 

 training in the subject. It is the first vol- 

 ume of a series of college science texts that 

 will be issued by this house 



Copyright, 1920, by World Book Company 



Copyright in Great Britain 



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