NEW CREATIONS IN PLANT LIFE 



kinds of trees already started on their way 

 that it would not be worth while to make 

 further crossings. 



In this connection it is of peculiar interest 

 to note that Mr. Burbank has come to the 

 conclusion, after many years of crossing, or 

 hybridizing, and grafting, that hybridization 

 in one sense is only a mode of grafting, both 

 being a more or less permanent combination. 



In an elaborate chart he traces side by side 

 the parallelism of results he has noted in both 

 grafting and pollenating: 



Where, for example, the pollen of one plant 

 acts as a poison upon another, the grafts 

 blight and die as if poisoned. 



Where, in pollenating, the union is partial, 

 mosaic or temporary, seed is rarely produced, 

 seedhngs generally inheriting tendencies and 

 qualities of one parent only, the second or 

 later generations reverting fully; the grafting 

 shows often a temporary union but not in 

 normal condition. 



Where the union by crossing is free, seed- 

 lings showing an unbalanced condition, 

 varying widely, the best condition for scien- 

 tific or natural selection, while the grafting 



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