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aggregate. Hence: To sum up; to put together mentally; as, to add numbers; to add up a column. Back to thy punishment, False fugitive, and to thy speed add wings. Milton. As easily as he can add together the ideas of two days or two years. Locke.

*al*ly, adv. Adiabatic line or curve, a curve exhibiting the variations of pressure and volume of a fluid when it expands without either receiving or giving out heat. Rankine.

, or that made before it is due; advance proofs, advance sheets, pages of a forthcoming volume, received in advance of the time of publication.

The hypoptilum.

A plume or tuft for the head composed of feathers, or of gems, etc. Prescott.

al division of a building, separated from the middle part, called the nave, by a row of columns or piers, which support the roof or an upper wall containing windows, called the clearstory wall.

l of the feldspar family, triclinic in crystallization, and in composition a silicate of alumina and soda. It is a common constituent of granite and of various igneous rocks. See Feldspar.

a scale graduated so as to indicate the percentage of pure alcohol, either by weight or volume. It is usually a form of hydrometer with a special scale.

A reddish glow seen near sunset or sunrise on the summits of mountains; specif., a reillumination sometimes observed after the summits have passed into shadow, supposed to be due to a curving downward (refraction) of the light rays from the west resulting from the cooling of the air.

Alum stone.

mineral frequently found on the walls of mines and quarries, chiefly hydrous sulphate of alumina; -- also called feather alum, and hair salt.

Left-handed on both sides; clumsy; -- opposed to ambidexter. [R.] Sir T. Browne.

An explosive consisting of a mixture of powdered aluminium and nitrate of ammonium.

nt plant, or the part of it used as a detergent, as the roots of Agave Americana, Chlorogalum pomeridianum, etc. [Sp. Amer. & Mex.]

the ancients to kill insects, etc., on vines; -- applied by Brongniart to a carbonaceous alum schist.

composition. It occurs in monoclinic crystals; also massive, generally with fibrous or columnar structure. The color varies from white to gray, green, brown, and black. It is a silicate of magnesium and calcium, with usually aluminium and iron. Some common varieties are tremolite, actinolite, asbestus, edenite, hornbl…

Doubly prostyle; having columns at each end, but not at the sides. -- n.

of the rounded prominences of the lower surface of the lateral hemispheres of the cerebellum, each side of the vallecula.

eans of an analytical table or key. Ultimate, Proximate, Qualitative, Quantitative, and Volumetric analysis. (Chem.) See under Ultimate, Proximate, Qualitative, etc.

An accessory process in many lumbar vertebræ.