CONTENTS 



PAET I 

 ADAPTATION AND DISEASE 



BEING THE CROONIAN LECTURES DELIVERED TO THE ROYAL 

 COLLEGE OF PHYSICIANS, LONDON, JUNE 1917 



CHAPTEE I 



PA 



THE BASAL PROBLEM OP EVOLUTION 



CHAPTER II 



ADAPTATION IN THE BACTERIA AND THE EVOLUTION OP THE 



INFECTIOUS DISEASES 15 



CHAPTER III 



ADAPTATION IN THE BACTERIA (continued) .... 28 



CHAPTER IV 



ADAPTATION TO DISEASE-PRODUCING AQBNCIES IN THE HIGHER 



ANIMALS 45 



CHAPTER V 



THE INHERITANCE OF ACQUIRED CONDITIONS IN THE HIGHER 



ANIMALS 60 



xiii 



