THE BURBANK CHERRY 117 



pendably from seed. But, of course, it is neces- 

 sary in producing new varieties to work from 

 seedlings, and from the standpoint of the experi- 

 menter who wishes to produce new varieties, it is 

 fortunate that the tendency to vary exists. For, 

 as our other experiments have taught, in the case 

 of plants already described, it is only when a 

 tendency to vary from a fixed racial type has 

 been brought about by hybridization, or other- 

 wise, that the material is furnished upon which 

 the experimenter can build. 



In the case of the cherry, all the familiar 

 varieties are the result of hybridizing uncon- 

 sciously in the past. 



By working with the seed of any single exist- 

 ing variety, one secures plants of numerous 

 types that suggest different possibilities of de- 

 velopment. 



THE IDEAL CHERRY 



In the course of these experiments, however, 

 I have had occasion to bring together, through 

 artificial pollenization, various standard varieties 

 of the cherry, and, although it has not been found 

 to be necessary to send to foreign countries, yet 

 the stock with which I have worked represents 

 races which have been developed in regions as 

 widely separated as Russia, the eastern United 

 States, California, and Japan. 



