THE CREATION OF NEW TREES 
English walnut, produced on an average four 
hundred and fifty pounds of nuts per season, 
in some cases as high as five hundred and 
fifty-two pounds. 
In the skin or outer layer of the meat of 
the walnut is more or less tannin, a substance 
which, when present in considerable quanti- 
ties, relatively, gives the skin a dark appear- 
ance and makes the meat more or less bitter 
and disagreeable to the taste. In some wild 
nuts when it appears in larger quantities, it 
becomes positively dangerous. While the out- 
side of the walnut is commercially changed 
by bleaching, the inside is not reached and 
the tannin has remained. Mr. Burbank thought 
that if Nature had allowed this undesirable 
substance to enter into the walnut, she could 
be induced to give it up, so he set about 
breeding the tannin out, succeeding at last in 
driving it entirely away, leaving the meat a 
pure creamy white. At the same time, he 
developed the size of the nut also, making it 
from a quarter to a third larger than its 
parents. 
Turning his attention to the chestnut, he 
decided to relieve it of some of its bur, and 
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