PRODUCTIVE FARMING 



BY 



KARY CADMUS DAVIS, Pn.D. (Cornell Univ.) 



PROFESSOR OP AGRICULTURE, KNAPP SCHOOL OP COUNTRY LIFE, GEORGE PEABODY 

 COLLEGE FOR TEACHERS; FORMERLY PROFESSOR OF AGRONOMY, NEW JERSEY 

 COLLEGE OP AGRICULTURE (RUTGERS) ; INSTRUCTOR IN AGRICULTURE, UNI- 

 VERSITY OF VIRGINIA SUMMER SCHOOL; PROFESSOR OF HORTICULTURE, 

 WEST VIRGINIA UNIVERSITY: PRINCIPAL, DUNN COUNTY (WIS.) 

 SCHOOL OF AGRICULTURE; DEAN, STATE SCHOOL OF AGRICUL- 

 TURE, CANTON, 3, 1 . ?.: CONDUCTOR MANY SUMMER TRAINING 



SCHOOLS; INSTRUCTOR IN FARMERS' INSTITUTES 





THIRD EDITION, REVISED AND ENLARGED 



PHILADELPHIA AND LONDON 



J. B. LTPPINCOTT COMPANY 



