LIPPINCOTT’S FARM MANUALS 
EDITED BY K. C. DAVIS, Pu.D. (Cornett) 
PRODUCTIVE FEEDING 
OF 
FARM ANIMALS 
BY 
F. W. WOLL, Pu.D. 
PROFESSOR OF ANIMAL NUTRITION, UNIVERSITY OF CALIFORNIA; FORMERLY PROFESSOR OF 
AGRICULTURAL CHEMISTRY, UNIVERSITY OF WISCONSIN, AND CHEMIST “TO WISCONSIN 
AGRICULTURAL EXPERIMENT STATION; EX-PRESIDENT OF ASSOCIATION OF 
OFFICIAL AGRICULTURAL CHEMISTS OF NORTH AMERICA; MEMBER OF 
INTERNATION JURY, PACIFIC INTERNATIONAL EXPOSITION. 
106- ILLUSTRATIONS IN THE TEXT 
SECOND EDITION REVISED 
“Tf vain our toil, 
We ought to blame the culture, not the soil.” 
Pope—Essay on Man 
PHILADELPHIA & LONDON 
J. B. LIPPINCOTT COMPANY 
