LOUIS CLARK VANUXEM FOUNDATION 



A CRITIQUE 



OF THE 



THEORY OF EVOLUTION 



BY 



THOMAS HUNT[MORGAN 



PROFESSOR OF EXPERIMENTAL, ZOOLOGY IN 

 COLUMBIA UNIVERSITY 



LECTURES DELIVERED AT PRINCETON UNIVERSITY 

 FEBRUARY 24, MARCH 1, 8, 15, 1916 



PRINCETON UNIVERSITY PRESS 

 PRINCETON 



LONDON: HUMPHREY MILFORD 



OXFORD UNIVERSITY PRESS 



1916 



