LUTHER BURBANK 
apples and sour, green varieties and red varieties. 
And all this without any necessity for experi- 
mentation on your part. You need have no knowl- 
edge of plant breeding except an understanding 
of the simple technique of grafting. 
The professional experimenters have supplied 
the material; you have but to avail yourself of the 
results of their work. 
Of course, if you wish to go a step farther there 
are inviting fields that you may enter. With the 
materials furnished by a single old apple treé you 
may become a plant developer. You may plant 
the seed of any choice apple purchased in the 
market and from the seedlings you will develop 
an interesting variety of fruits, some of which may 
seem to you better than any existing varieties. 
We have already caught glimpses, in the out- 
lines of my work already given, of the possibili- 
ties of the development of various orchard fruits 
as to size and flavor and other desirable qualities. 
If you desire to try your hand at similar im- 
provement either of the fruit now growing on your 
ungrafted trees, or of that growing on cions of 
improved varieties, it will require only reasonable 
attention to the principles already outlined in 
earlier chapters of this work, together with a fair 
degree of patience and persistency, to insure some 
measure of success. 
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