20 
saving of $10,000 per year, this amount representing the loss previously 
sustained annually from the corn root-worm. The cotton crop, which 
formerly in years of bad infestation by the leaf-worm, was estimated 
to be injured to the extent of $30,000,000, is 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 ov a loss in agricultural operations. 
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