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the other two-thirds was estimated at $2,500. The saving to the plum 
crop and other small fruits frequently amounts to the securing of a 
perfect crop where otherwise no yield whatever of sound fruit could be 
secured. 
An illustration, in the case of field insects, may also be given where, 
by the adoption of asystem of rotation, in which oats were made to alter- 
nate with corn, the owner of a large farm in Indiana made a saving of 
$10,000 per year, this amount representing the loss previously sustained 
annually from the corn root-worm. The cotton crop, which formerly 
m years of bad infestation by the leaf-worm was estimated to be 
injured to the extent of $30,000,000, 1s now comparatively free from 
such injury, owing to the general use of arsenicals. 
Facts of like import could be adduced in regard to many other lead- 
ing staples, but the foregoing are sufficient to emphasize the money 
value of intelligent action against insect enemies, which, with the pres- 
ent competition and diminishing prices, may represent the difference 
between a profit or a loss in agricultural operations. 
A 
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