PRINCIPLES AND PRACTICE 

 OF MILK HYGIENE 



BY 



LOUIS A. KLEIN, V.M.D. 



PKOFEBSOR OF PHARMACOLOGY AND VETERINARY HYGIENE IN THE SCHOOL OF VETERINARY 

 MEDICINE AT THE UNIVERSITY OF PENNSYLVANIA, AND DEAN OF THE FACULTY 



41 ILLUSTRATIONS IN THE TEXT 



PHILADELPHIA AND LONDON 

 J. B. LIPPINCOTT COMPANY 



