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vast number of species. He collected, with incredible, pains, the synonymous names of the various authors who had written on the subject, and, above all, added descriptions, and the places where they were to be found. So great were the effects of this union of talents and in dustry, that he increased the number of known insects from two hundred to nearly three thou sand, though this number is not the sixth part of those no known. This vast multitude is included in seven orders.

ORDER 1.

co1eoptera.-Tleis division contains all those insects whose wings are guarded by a pair of strong, horny cases, under which the wings are folded when at rest. rrhese cases are called eytra. The beetle is an example of this order.

ORDER II.

Hemiptera, or half winged.----Tbe upper part 'of the wing-sheaths in this tribe is of a leathery texture, and the lower part a sort of membrane The sheaths of this order cross each other when closed, instead of meeting in a direct line, as in the coleoptera. It comprises all the locusts or grasshoppers with many others.

ORiiEJt