DARWINISM TO-DAY 



A DISCUSSION OF PRESENT-DAY SCIENTIFIC CRITICISM 

 OF THE DARWINIAN SELECTION THEORIES, TO- 

 GETHER WITH A BRIEF ACCOUNT OF THE 

 PRINCIPAL OTHER PROPOSED AUXIL- 

 IARY AND ALTERNATIVE THEO- 

 RIES OF SPECIES-FORMING 



BY 



VERNON L. KELLOGG 



PROFESSOR IN LELAND STANFORD, JR., UNIVERSITY 



LONDON 

 GEORGE BELL AND SONS 



NEW YORK: HENRY HOLT AND COMPANY 

 1907 



twenty-five years ago seemed an indisputable scientific 

 gospel and now stand* so much discredited as our author 

 tells us that they do. B.C.A.W. 



