. Economic entomology for the farmer and fruit-grower [microform] : and for use as a text-book in agricultural schools and colleges . A breeding-cage of the Riley pattern. box there should be three or four inches of clean sand for the benefit of those forms that go underground to change to a pupa, and in due time the caterpillar or slug will, under the observer's very eyes, change to a butterfly, beetle, or other insect, accord- ing to the character of the larva.

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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphila, bookyear1896