LiPPiNCOTT's FARM MANUALS 



EDITED BY K. C. 



PRODUCTIVE FEEDING 



OF 



FARM ANIMALS 



BY 



F. W. WOLL, PH.D. 



PROFESSOR OF ANIMAL NUTRITION, UNIVERSITY OK 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 CF 



INTERNATION JURY, PACIFIC INTERNATIONAL EXPOSITION. 



105 ILLUSTRATIONS IN THE TEXT 

 SECOND EDITION REVISED 



" If vain our toil. 

 We ought to blame the culture, not the soil." 



POPE Essay on Man 



PHILADELPHIA & LONDON 

 J. B. LIPPINCOTT COMPANY 



