ELEMENTARY TEXTBOOK OF 



ECONOMIC ZOOLOGY 



AND 



ENTOMOLOGY 



BY 



VERNON LYMAN KELLOGG 



PROFESSOR 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 



