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ll; inconsiderable; insignificant; as, a fractional part of the population. Fractional crystallization (Chem.), a process of gradual and approximate purification and separation, by means of repeated solution and crystallization therefrom. -- Fractional currency, small coin, or paper notes, in circulation, of less valu…

, or a species (Rhamnus Frangula) of the buckthorn. Frangulinic acid (Chem.), a yellow crystalline substance, resembling alizarin, and obtained by the decomposition of frangulin.

A yellow crystalline dyestuff, regarded as a glucoside, extracted from a species (Rhamnus Frangula) of the buckthorn; -- called also rhamnoxanthin.

A colorless crystalline substance, regarded as a glucoside, and found in the bark of the ash (Fraxinus) and along with esculin in the bark of the horse-chestnut. It shows a delicate fluorescence in alkaline solutions; -- called also paviin.

A sulphide of antimony, lead, and silver, occuring in monoclinic crystals.

Lately produced, gathered, or prepared for market; not stale; not dried or preserved; not wilted, faded, or tainted; in good condition; as, fresh vegetables, flowers, eggs, meat, fruit, etc.; recently made or obtained; occurring again; repeated; as, a fresh supply of goods; fresh tea, raisins, etc.; lately come or made…

rcle in the sky attending frosty weather and formed by reflection of sunlight from ice crystals floating in the air; the parhelic circle whose center is at the zenith.

d cyanuric acids, and designating an acid so called. Fulminuric acid (Chem.), a white, crystalline, explosive subatance, H3C3N3O3, forming well known salts, and obtained from the fulnunates. It is isomeric with cyanuric acid, and hence is also called isocyanuric acid.

ric acid (Chem.), a widely occurring organic acid, exttracted from fumitory as a white crystallline substance, C2H2(CO2H)2, and produced artificially in many ways, as by the distillation of malic acid; boletic acid. It is found also in the lichen, Iceland moss, and hence was also called lichenic acid.…

An alkaloid extracted from fumitory, as a white crystalline substance.

The little stalk that attaches a seed to the placenta.

A white, crystalline base, obtained indirectly from furfurol.

A yellow, crystalline substance, (C4H3O)2.C2O2, obtained by the oxidation of furoin. [Written also furil.]

A colorless, crystalline substance, C10H8O4, from furfurol.

responding fusion of creeds. C. Kingsley. Watery fusion (Chem.) the melting of certain crystals by heat in their own water of crystallization.

serpentine, later to the rock called euphotide, and now generally used for a coarsely crystalline, igneous rock consisting of lamellar pyroxene (diallage) and labradorite, with sometimes chrysolite (olivine gabbro).

A white, crystalline sugar, C6H12O6, isomeric with dextrose, obtained by the decomposition of milk sugar, and also from certain gums. When oxidized it forms mucic acid. Called also lactose (though it is not lactose proper).

incipal ore of lead. It is of a bluish gray color and metallic luster, and is cubic in crystallization and cleavage. False galena. See Blende.

A red crystalline dyestuff, obtained by heating together pyrogallic and phthalic acids.

found in the free state in galls, tea, etc., and produced artificially. It is a white, crystalline substance, C6H2(HO)3.CO2H, with an astringent taste, and is a strong reducing agent, as employed in photography. It is usually prepared from tannin, and both give a dark color with iron salts, forming tannate and gallate…