LUTHER BURBANK 
find that for practical purposes it would thus be 
possible to produce all of the daisies we desired. 
We might never even care to make use of the seed. 
But if we did, by keeping our new pink daisies 
together year afier year, in eight years, or perhaps 
ten or fourteen, pink being crossed with pink, and 
the upset equilibrium restored, we should find that 
we were getting seeds which came true, or nearly 
true, to type. 
“You see, we upset heredity to produce varia- 
tion; then we let it settle down to a balance to 
perpetuate the particular variation which we have 
chosen.” 
The architect can always build a second struc- 
ture better than the first, and the plant improver, 
likewise, finds in each experiment a multitude of 
new suggestions for the production of still other 
changes or improvements. 
In even the handful of daisy variations which 
can be reproduced here, there are to be seen 
countless new tendencies, any one of which might 
lead to the perfection of a wholly different, if not 
a better flower. 
There are, of course, the variations in size— 
and those with the long petals show that with 
encouragement the flower, simply by quantity 
production and continued selection, might produce 
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