CONTENTS 



PAET I 

 ADAPTATION AND DISEASE 



BEING THE CROONIAN LECTURES DELIVERED TO THE ROYAL 

 COLLEGE OF PHYSICIANS, LONDON, JUNE 1917 



CHAPTER I 



PAGE 



The Basal Problem of Evolution 3 



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 Agencies in the Higher 



Animals 45 



CHAPTER V 



The Inheritance of Acquired Conditions in the Higher 



Animals .60 



xiii 



