PLANT-BREEDING 



COMMENTS ON THE EXPERIMENTS 

 OF NILSSON AND BURBANK 



BY 



HUGO DE VRIES 



Ml 

 PROFESSOR OF BOTANY IN THE UNIVERSITY OF AMSTERDAM 



1 

 ^ 



563975. 



/. (o- S^ 



CHICAGO 

 THE OPEN COURT PUBLISHING CO. 



London: Kegan Paul, Trench, Trubner & Co., Ltd. 



1907 



