PREFACE TO SECOND EDITION 



THE fact that the first edition of Infection and Immunity has 

 been exhausted within a year indicates the interest with which 

 the general practitioner is meeting the marvellous advances of 

 modern experimental medicine. In preparing this new edition the 

 author has endeavored to embody the most notable achievements 

 of the past year, and has thus added sections on auto- and normal 

 serum therapy, on the chemotherapy of pneumococcus infections 

 and of cancer, on the serum diagnosis of pregnancy, etc., besides 

 giving the entire work a careful review. 



The author hopes that his work has served to some extent in 

 diffusing a knowledge of this vastly important subject, and in 

 making it readily assimilable and applicable, and he hopes that 

 this new and revised edition may meet with the same generous 



recognition as its predecessor. 



C. E. S. 



