102 



J: VOLUTION AND ANIMAL LIFE 



mutability of species, and the strong individuality of each plant 

 organism, holding- tbat the apparent fixity of characteristics is a 

 iDhenon^-^-^^ wholly dependent for its degree of reahty on the 



Fig. C8. — Seedlings of the Williams early apple, showing all the colors ever found iu 



apples. (From photograph by Burbank.) 



length of time this characteristic has been ontogenetically re- 

 peated in the phjdogeny of the race. 



In like fashion to this working with plants, breeds of 

 animals have been estabhshed by crossing and selection with a 



