LUTHER BURBANK 



stand the frosts; that it shall have the quality of 

 vitality that makes it immune to the attacks of 

 insects; that it shall have abundant foliage to 

 protect the fruit from the sun; and that it shall be 

 a prolific bearer no less than a bearer of fruit of 

 marketable quality. 



All this, in addition to the quality of earliness 

 of hearing to which reference has already been 

 made. 



If we add that there are certain minor quali- 

 ties, to be borne in mind, such as the question of 

 length of stem, number of cherries to the cluster, 

 and tendency of the fruit to cling to the stone in 

 one case or leave it readily in another, an inkling 

 will be gained of the complications of the problem 

 in heredity that confronts the developer of an 

 improved race of cherries. 



But the full significance of these complications 

 can scarcely be appreciated wholly by any one 

 who has not been confronted by them in actual 

 practice. 



If I have been able to overcome them in a 

 relatively brief number of years, it is because I 

 have worked persistently, selected with discrimi- 

 nation, and invoked the aid of the bees in making 

 experiments on a large scale. 



The modern student of heredity, in dealing 

 with cases such as this, is able to give a somewhat 



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