PORK-PRODUCTION 



BY 



WILLIAM W. SMITH, M.S. A. 



ASSOCIATE PROFESSOR OF ANIMAL HUSBANDRY 

 PURDUE UNIVERSITY 



WITH A CHAPTER ON 



THE PREVENTION OF HOG DISEASES 



BY 



E. A. CRAIG, D.V.M. 



PROFESSOR OP VETERINARY SCIENCE, PURDTTE UNIVERSITY 

 AND CHIEF VETERINARIAN, PURDUE AGRICUL- 

 TURAL EXPERIMENT STATION 



THE MACMILLAN COMPANY 

 1923 



All rights reserved 



