LUTHER BURBANK 



on the grotihds of Mr, Goodrich many years before 

 the time of its discovery. 



But of course that does not in the least matter, 

 for every potato of a given variety, no matter how 

 far removed from the original specimen of that 

 variety in point of time, is of the same generation 

 with that original so long as all are grown from 

 the tuber. 



All this has been clearly explained again and 

 again in dealing with the propagation of other 

 plants from tubers or cuttings or grafts or by root 

 division. 



It follows that the twenty-three seedlings were 

 progeny of the second filial generation of the 

 original varieties that were crossed and which 

 produced the Early Rose. And this fully accoimts 

 for the extraordinary range of variation that the 

 twenty-three seedlings manifested. 



We have seen many illustrations of this 

 tendency to vary in the second filial generation of 

 hybridized species or varieties. We have observed 

 that the latent qualities of diverse strains of 

 ancestors are permitted to come to the surface and 

 make themselves manifest in the various individ- 

 uals of a second generation, once the tendency to 

 relative fixity has been broken up by hybridization. 

 So the twenty-three diversified varieties of pota- 

 toes that grew from the single seedball merely 



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