HOG CHOLERA 



ITS 



NATURE AND CONTROL 



BY 



RAYMOND R. IRCH, B.S., D.V.M., Pn.D. 



PROFESSOR IN CHARGE OF THE NEW YORK STATE VETERINARY 



COLLEGE EXPERIMENT STATION AT CORNELL 



UNIVERSITY, ITHACA, NEW YORK 



gotft 



THE MACMILLAN COMPANY 

 1922 



All rights reserved 



