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and hydrogen, in the proportion of two atoms of the former to two of the latter. It is a colorless gas, with a peculiar, unpleasant odor, and is produced for use as an illuminating gas in a number of ways, but chiefly by the action of water on calcium carbide. Its light is very brilliant. Watts.

Seeds of the annotto tree; also, the coloring matter, annotto.

Free from color; transmitting light without decomposing it into its primary colors.

To deprive of color; to make achromatic.

Color blindness; inability to distinguish colors; Daltonism.

Lacking, or deficient in, color; as, achromatous blood.

Free from color; colorless; as, in Physiol. Chem., the achromic point of a starch solution acted upon by an amylolytic enzyme is the point at which it fails to give any color with iodine.

Dextrin not colorable by iodine. See Dextrin.

Colorless; achromatic.

ished by their sour taste, solubility in water, and reddening of vegetable blue or violet colors. They are also characterized by the power of destroying the distinctive properties of alkalies or bases, combining with them to form salts, at the same time losing their own peculiar properties. They all contain hydrogen, u…

Acres collectively; as, the acreage of a farm or a country.

Color blindness; achromatopsy.

A limpid, colorless, highly volatile liquid, obtained by the dehydration of glycerin, or the destructive distillation of neutral fats containing glycerin. Its vapors are intensely irritating. Watts.

mal of the class Anthozoa, and family Actinidæ. From a resemblance to flowers in form and color, they are often called animal flowers and sea anemones. [See Polyp.].

A bright green variety of amphibole occurring usually in fibrous or columnar masses.

To make actual; to realize in action. [R.] Coleridge.

sin;" human frailty. And whipped the offending Adam out of him. Shak. Adam's ale, water. [Coll.] -- Adam's apple.

ited, given, or tending, to adaptation; characterized by adaptation; capable of adapting. Coleridge. -- A*dapt"ive*ly, adv.

ne 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.

to make suitable; to fit. [Obs.] The land about is exceedingly addicted to wood, but the coldness of the place hinders the growth. Evelyn.