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A ferruginous hydrate of alumina. It is largely used in the preparation of aluminium and alumina, and for the lining of furnaces which are exposed to intense heat.

in boggy or swampy land; a variety of brown iron ore, or limonite. (b) Bog manganese, the hydrated peroxide of manganese. -- Bog rush (Bot.), any rush growing in bogs; saw grass. -- Bog spavin. See under Spavin.

ath washed thy sallow cheecks for Rosaline! Shak. Brine fly (Zoöl.), a fly of the genus Ephydra, the larvæ of which live in artificial brines and in salt lakes. -- Brine gauge, an instrument for measuring the saltness of a liquid. -- Brine pan, a pit or pan of salt water, where salt is formed by cristallization. --…

rly mineral, occurring thin and foliated, like talc, and also fibrous; a native magnesium hydrate.

f animals and vegetables which develops into a new organism, either free or attached. See Hydra. Bud moth (Zoöl.), a lepidopterous insect of several species, which destroys the buds of fruit trees; esp. Tmetocera ocellana and Eccopsis malana on the apple tree.

odor. It is the type of a series of compounds analogous to the nitrogen compounds called hydrazines. [Written also cacodyle, and kakodyl.]

A kind of hydraulic brake for regulating the action of pumping engines and other machines; -- sometimes called dashpot.

c. It is also found to a slight extent in certain animals, as the tunicates. It is a carbohydrate, (C6H10O5)n, isomeric with starch, and is convertible into starches and sugars by the action of heat and acids. When pure, it is a white amorphous mass. See Starch, Granulose, Lignin. Unsized, well bleached linen paper is…

The layer of bone investing the root and neck of a tooth; -- called also cementum. Hydraulic cement. See under Hydraulic.

A constellation in the southern heavens between Hydra and the Southern Cross.

ic compounds by energy derived from chemical changes or reactions. Chemosynthesis of carbohydrates occurs in the nitrite bacteria through the oxidation of ammonia to nitrous acid, and in the nitrate bacteria through the conversion of nitrous into nitric acid. -- Chem`o*syn*thet"ic (#), a.

Chloral hydrate. Chloral hydrate, a white crystalline substance, obtained by treating chloral with water. It produces sleep when taken internally or hypodermically; -- called also chloral.

; greenish yellow. Citrine ointment (Med.), a yellowish mercurial ointment, the unquentum hydrargyri nitratis.

s chloride, a crystalline compound, CoCl2, of a pale rose color when hydrous, blue when dehydrated. Its solution is used for a sympathetic ink, the writing being nearly colorless when dried in the air, owing to absorbed moisture, and becoming bright blue when warmed.

ails or beams fixed overhead, as in a machine shop or foundry. -- Water crane, a kind of hydrant with a long swinging spout, for filling locomotive tenders, water carts, etc., with water.

A pneumatic or hydraulic cushion for a falling weight, as in the valve gear of a steam engine, to prevent shock.

heat, acids, or diastase. It is of somewhat variable composition, containing several carbohydrates which change easily to their respective varieties of sugar. It is so named from its rotating the plane of polarization to the right; -- called also British gum, Alsace gum, gommelin, leiocome, etc. See Achroödextrin, and…

cid. Dextronic acid, a sirupy substance obtained by the partial oxidation of various carbohydrates, as dextrose, etc.

A hydrate of alumina, often occurring in white lamellar masses with brilliant pearly luster; -- so named on account of its decrepitating when heated before the blowpipe.

orrible; terrible; lamentable. Dire was the tossing, deep the groans. Milton. Gorgons and hydras and chimeras dire. Milton.