NEW-WORLD AGRICULTURE SERIES 



NATURE-STUDY 

 AGRICULTURE 



A Textbook for Beginners 



by * 

 William T. S killing, M.S. 



Super-visor of Nature Study and Agriculture 

 State Normal School, San Diego, California 



ILLUSTRATED 



ivitb 266 engravings from photographs 

 and drawings 



Yonkers-on-Hudson, New York 



WORLD BOOK COMPANY 



1920 



