INFECTION AND 

 RESISTANCE 



AN EXPOSITION OF THE BIOLOGICAL PHENOMENA 



UNDERLYING THE OCCURRENCE OF INFECTION 



AND THE RECOVERY OF THE ANIMAL BODY 



FROM INFECTIOUS DISEASE 



BY 



HANS ZINSSER, M.D. ' 



Professor of Bacteriology at the College of Physicians and Surgeons, Columbia University, 



and Bacteriologist to the Presbyterian Hospital, New York 



Major, Medical Officer's Reserve Corps, U. S. A. 



WITH A CHAPTER ON 



COLLOIDS AND COLLOIDAL REACTIONS 



BY 



PROFESSOR STEWART W. YOUNG 



Department of Chemistry, Stanford University 



SECOND EDITION REVISED 



THE MACMILLAN COMPANY 



1918 



