Bookworm
any grub which feeds on the paper of books. The name more especially belongs to the larva of an on the paper of books. The name more anobium (anobium pertinax, A. eruditum, etc.), a small coleopterous insect, which anobium (anobium pertinax, A. eruditum, is classed among the Death-Watch insects; though the larva of ecophora pseudospictella, a small brown moth, seems to have nearly an equal claim to it. The latter much resembles the the anobium has none. Most people are familiar with the bookworm's ravages; but the creatures are extremely rare in the United States, especially since so many chemical substances have been introduced into the manufacture of paper. troduced into the manufacture of paper. bium is still common.
BOONTON vented and used by the native Australians, who are generally deemed the lowest ans, who are generally deemed the lowest vented and used by the native Australi- BOOMERANG, a missile weapon inin intelligence of any tribe or race of one side and flat on the other, about three-quarters of an inch thick. It is one side and flat on the other, about wise, either upward into the air, or downward so as to strike the ground at some distance from the thrower. In the first case it flies with a rotary motion, as its shape would indicate, and after assuddenly returns in an elliptical orbit to a spot near its starting point. On throwcending to a great height in the air, it ing it downward to the ground, it reject at which it is thrown. The most ricochet motion until it strikes the obbounds in a straight line, pursuing a singular curve described by it is when it is projected upward at an angle about and the native who throws it stands with his back to the object he intends and the native who throws it stands 45°, when its flight is always backward, it is projected upward at an angle about to hit. co., Ia.; on the Chicago and Northwestern, the Chicago, Milwaukee and St. Paul