LUTHER BURBANK 



And as the conference goes on, the points of 

 discrepancy become only the more apparent. 



All the differences that are manifest between 

 a blackberry bush and an apple tree, and between 

 an apple and a blackberry — together with a mul- 

 titude of intimate distinctions that the crude hu- 

 man senses cannot fathom — are represented by 

 factors that obviously cannot blend. 



So, after studying the matter over and wrang- 

 ling about it till their heads ache, the elfin build- 

 ers give up the thing as a bad job. 



Their germ factors lie in separate piles unas- 

 sembled and incapable of being assembled; and 

 the result is that no provision will be made for 

 fruit in the future plant. In other words the plant 

 will be sterile, and that particular double stream 

 of germ plasm w;ill cease to be perpetuated. 

 By Way of Summary 



This, then, is what may be imagined to occur 

 when there is too great difference of materials. 

 It may be left to the reader's imagination to make 

 for himself a picture of the various activities of 

 the elfin architects in those cases where the di- 

 versity between the different hereditary factors is 

 greater than that between the two kinds of black- 

 berries, but less than that between the apple and 

 the dewberry. 



We saw in such cases as that of the Primus 



[300] 



