Many keen naturalists believe that the last great enemy of man, barring those released by his own stupidity, will be the insects. Certain it is that the problems of economic entomology and tropical hygiene are understood by all too few, and they chiefly the specialists whose business it is to fight the never-ending pests. A bureau of the U. S. Department of Agriculture devotes its whole time to this important work, and calls upon it this Summer have been particularly pressing.
Skirmishes in the anti-insect campaign :
1) The ravages of the Japanese...
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