viii FOOT-NOTES TO EVOLUTION. 



Leland Stanford Jr. University. The essay of Professor 

 Conklin was read before the American Philosophical So- 

 ciety. The others are here presented for the first time. 

 I may add that the present volume is not intended 

 as a text-book in Evolution, although most phases of 

 organic development are in one way or another touched 

 upon, some of them, however, most briefly. The treat- 

 ment of different topics is necessarily unequal. The 

 time is long past when any one man can master what is 

 known in any science, least of all the universal science 

 of life. In the supplementary essays I have asked my 

 scientific friends to do for this volume certain work 

 which I could not do except by the unsatisfactory 



method of compilation. 



David Starr Jordan. 



Palo Alto, California, yawwar;/ 79, i8q8. 



