Extremes of 
Development 
The Burbank apple 
at the left is one of 
the largest apples ever 
grown; whereas the wild 
apples at the right are 
fruits of insignificant size. 
Note that the small apples 
are nearly all seeds, where- 
as the large apple is nearly 
all pulp. No more striking 
example could be given of 
the possibility of modify- 
ing a fruit through se- 
lective breeding. The wild 
apple may still be of serv- 
ice as a hybridizing agent 
in the development of 
hardy strains of cul- 
tivated apples. 
