ELEMENTARY TEXTBOOK OF 



ECONOMIC ZOOLOGY 



AND 



ENTOMOLOGY 



SO|l OF ENTOMOLOGY AND LECTURER IN BIONOMICS 

 IN STANFORD UNIVERSITY 



AND 



RENNIE WILBUR DOANE 



ASSISTANT PROFESSOR OF ECONOMIC ENTOMOLOGY 

 IN STANFORD UNIVERSITY 



NEW YORK 

 HENRY HOLT AND COMPANY 



