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at branch of mathematics which investigates the relations, properties, and measurement of solids, surfaces, lines, and angles; the science which treats of the properties and relations of magnitudes; the science of the relations of space.

Any superficial coating or appearance, as opposed to what is solid and genuine. Gilding metal, a tough kind of sheet brass from which cartridge shells are made.

ts, or progresses, on the inside of the branchial arches of fishes, which help to prevent solid substances from being carried into gill cavities.

Resembling ice; having the appearance and consistency of ice; - - said of certain solid compounds; as, glacial phosphoric or acetic acids. Glacial acid (Chem.), an acid of such strength or purity as to crystallize at an ordinary temperature, in an icelike form; as acetic or carbolic acid. -- Glacial drift (Geol.), ear…

A round or spherical body, solid or hollow; a body whose surface is in every part equidistant from the center; a ball; a sphere.

A tall herb (Solidago Virga-aurea), bearing yellow flowers in a graceful elongated cluster. The name is common to all the species of the genus Solidago. Golden-rod tree (Bot.), a shrub (Bosea Yervamora), a native of the Canary Isles.

Soft material lying between the wall of a vein aud the solid vein. Raymond.

ing, and reproducing sounds, the record being a tracing of a phonautograph etched in some solid material. Reproduction is accomplished by means of a system attached to an elastic diaphragm.

lume of some other body taken as the standard or unit. This standard is usually water for solids and liquids, and air for gases. Thus, 19, the specific gravity of gold, expresses the fact that, bulk for bulk, gold is nineteen times as heavy as water.

mp, and not dried before the cast is made. -- Green sea (Naut.), a wave that breaks in a solid mass on a vessel's deck. -- Green sickness (Med.), chlorosis. -- Green snake (Zoöl.), one of two harmless American snakes (Cyclophis vernalis, and C. æstivus). They are bright green in color. -- Green turtle (Zoöl.), an e…

A variety of sandstone, usually imperfectly consolidated, consisting largely of glauconite, a silicate of iron and potash of a green color, mixed with sand and a trace of phosphate of lime.

The projecting solid angle formed by the meeting of two vaults, growing more obtuse as it approaches the summit.

Solidly; deeply; thoroughly. [Obs.] Those whom princes do once groundly hate, Let them provide to die as sure us fate. Marston.

l for melting gum and mixing other ingredients. -- Gum resin, the milky juice of a plant solidified by exposure to air; one of certain inspissated saps, mixtures of, or having properties of, gum and resin; a resin containing more or less mucilaginous and gummy matter. -- Gum sandarac. See Sandarac. -- Gum Senegal, a…

One of a group of plectognath fishes (Gymnodontes), having the teeth and jaws consolidated into one or two bony plates, on each jaw, as the diodonts and tetradonts. See Bur fish, Globefish, Diodon.

Not easily penetrated, cut, or separated into parts; not yielding to pressure; firm; solid; compact; -- applied to material bodies, and opposed to soft; as, hard wood; hard flesh; a hard apple.

To become hard or harder; to acquire solidity, or more compactness; as, mortar hardens by drying. The deliberate judgment of those who knew him [A. Lincoln] has hardened into tradition. The Century.

of calves. They afford a kind of jelly. Hebert. -- Salt of hartshorn (Chem.), an impure solid carbonate of ammonia, obtained by the destructive distillation of hartshorn, or any kind of bone; volatile salts. Brande & C.-- Spirits of hartshorn (Chem.), a solution of ammonia in water; -- so called because formerly obta…

multiplying the atomic weight of any element by its specific heat. The atomic heat of all solid elements is nearly a constant, the mean value being 6.4. -- Dynamical theory of heat, that theory of heat which assumes it to be, not a peculiar kind of matter, but a peculiar motion of the ultimate particles of matter. Hea…

A white, semisolid, spermaceti-like hydrocarbon, C16H34, of the paraffin series, found dissolved as an important ingredient of kerosene, and so called because each molecule has sixteen atoms of carbon; -- called also hexadecane.