xvi FOREWORD 



discovery, research, and conquest of obstacles. The approach to this unknown 

 field of future human advance — the seat of the human mind and the con- 

 stitution of the human mmd — is along the great paths of human and com- 

 parative anatomy and of human and comparative psychology. 



This volume contains the basis of what to our Icnowledge is the first 

 profound study of the genesis of the intimate or internal structure of the 

 human brain in comparison with the brains of animals more or less nearly 

 related to man. It is a summary of Frederick Tilncy's lifework along largely 

 new and original paths, pursued with the most unremitting intelligence and 

 energy and yielding a result of exceptional breadth, precision and exactitude 

 which affords a new and strong ground on which neurologists, psychologists, 

 pathologists, and students of animal and human behavior may advance 

 further into the unknown. 



May we not add a further A\<)rd of welcome to this splendid mono- 

 graph at a time when we are mourning the loss of George Sumner Huntington, 

 who laid the foundations of comparative anatomy for the School of Anatomy 

 of Columbia University and who unfortunately passed away without witness- 

 ing the consummation of the research and endeavors of one of his most 

 distinguished students, namely, the linking of Man in all his parts and 

 functions with the long lines of his ancestry. 



Henry Fairfield Osborn 



New York, N. Y. •*■ 



March, 1928. 



