136 



Heredity and Eugenics 



not seem wise. It is simply mentioned as one other way in 

 which new plant varieties originate. 



In conclusion I wish to anticipate a possible question. 



Fig. 50. — Frond of Boston fern and types that have arisen tiirough bud 

 variation. 



What help have the new biological principles been to the 

 commercial plant breeder? A prominent horticulturist 

 has said that the new discoveries have made necessary no 

 changes in method. With the exception that they have 



