ON THE ORIGIN OF NEW SPECIES 
undeviating patience, and cultivated eyes to 
detect variations of values.” 
The production of these three new and 
valuable species of fruits is not only of great 
interest and large economic value, but it opens 
the way to an indefinite extension. Here, as 
in many other lines, much work remains to be 
done by other hands. Within certain limita- 
tions there remain vast opportunities for the 
production of other fruits, of grains and grasses 
and trees and all manner of plant life now 
unknown to the world. Not only is novelty 
to be looked for, but important additions to 
man’s resources. If a combination of certain 
grains, for example, could be made producing 
a wholly new grain of augmented food supply 
and productivity, the importance of the 
product to the world would be beyond 
estimate. 
Such creations as these Mr. Burbank has 
effected, with many other improvements upon 
old forms of plant life, establish anew the fact 
that the time which has been predicted by 
some pessimistic theorists, when there will be 
too many people on the globe for the produc- 
tivity of the earth, must be set forward so 
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