LUTHER BURBANK 
thoroughly fixed that in a lifetime it would be 
impossible, through pure environment, to over- 
throw it. 
Let us next take a twenty-foot flower bed, say, 
divide it in the middle, plant one side solid with 
the orange daisies, and the other side solid with 
white daisies, and let the bees and the breezes mix 
those heredities up to produce for us the new pink 
daisy which we have planned to produce. 
Up come the orange flowers, and up come the 
white. The breezes and the bees carry the pollen 
from flower to flower; the petals fall away, and 
disclose the pods of fertile seed in which, for the 
first time, these two strains of heredities are 
combined. 
In the millions of seeds which we can beat 
out of these pods, there are some with the white 
tendencies stored away unaltered, some with the 
orange tendencies still predominant—some with 
white pulling evenly against orange to make a 
red, some with orange slightly stronger than white, 
and all of the infinity of variation in between. 
We shall find in those seeds the mixed ten- 
dencies not only of the two species, but of all of 
the families of two species, and of the individuals 
of those families; mixed, upset, disturbed—so 
thoroughly that, not only will the life history of 
both parents be laid bare in the resulting plants, 
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