PREFACE TO EDITION OF 1929 xiii 



the still unknown causes of Evolution^ it has been 

 a joy to entirely reconsider, revise, and rewrite 

 this volume. The original references and cita- 

 tions have been carefully examined, wherever 

 possible, and annotated. In renewing the dedi- 

 cation to my revered teacher in philosophy, who, 

 despite his rigid theological training, was among 

 the first to welcome the solution of the age-long 

 riddle of Creation, I also now dedicate this work 

 to the many and learned commentators on the 

 history of the evolution idea whose writings are 

 fully cited in the new bibliography at the close of 

 the volume. 



From the Greeks to Darwin is a history of 

 ideas and only to a small extent a story of per- 

 sonalities. In Impressions of Great Naturalists, 

 the succeeding volume of my Biological Series, I 

 enter more fully into the character, personality 

 and education of Darwin and of a number of 

 great men of his period. In time I hope to add a 

 third volume descriptive of Darwinism up to the 

 present day. 



Henry Fairfield Osborn. 



Columbia University and 

 American Museum of Natural History, 

 February 1, 1929. 



