Vernon Lyman Kellogg 



useful to make it more useful. Such an addition 

 makes a new race. 



Second, the* product of variations, abundant 

 and extreme, by various methods, as (^) the 

 growing under new and, usually, more favorable 

 environment (food supply, water, temperature, 

 light, space, etc.) of various wild or cultivated 

 forms, and (/^) by hybridizations between forms 

 closely related, less closely related and, finally, as 

 dis-similar as may be (not producing sterility), this 

 hybridizing being often immensely complicated 

 by multiplying crosses, /. <?., the offspring from 

 one cross being immediately crossed with a third 

 form, and so on. These hybridizations are made 

 sometimes with very little reference to the actual 

 useful or non-useful characteristics of the crossed 

 parents, with the primary intention of producing 

 an unsettling or instability in the heredity, of 

 causing, as Burbank sometimes says, ' perturba- 

 tion ' in the plants, so as to get just as wide and 

 as large variation as possible. Other crosses are 

 made, of course, in the deliberate attempt to 



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