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A substance (C6H5.N2.C6H5) derived from nitrobenzene, forming orange red crystals which are easily fusible.

A mineral occurring in triclinic crystals approaching pyroxene in angle, and of a greenish black color. It is a silicate of iron, manganese, and lime.

A white, crystalline substance,

Native sulphate of barium, a mineral occurring in transparent, colorless, white to yellow crystals (generally tabular), also in granular form, and in compact massive forms resembling marble. It has a high specific gravity, and hence is often called heavy spar. It is a common mineral in metallic veins.…

A mineral of a white or gray color, occurring massive or crystallized. It is a compound of the carbonates of barium and calcium.

Relating to, or forming, the base. Basal cleavage. See under Cleavage. -- Basal plane (Crystallog.), one parallel to the lateral or horizontal axis.

The basal plane of a crystal.

Said of crystalline rocks which contain a relatively low percentage of silica, as basalt. Basic salt (Chem.), a salt formed from a base or hydroxide by the partial replacement of its hydrogen by a negative or acid element or radical.

om sea water, by evaporation in shallow pits or basins, by the heat of the sun; the large crystalline salt of commerce. Bacon. Ure.

Minute acicular or dendritic crystalline forms sometimes observed in glassy volcanic rocks.

A transparent crystalline substance,

A transparent crystalline substance, C6H5.CO.NH2, obtained by the action of ammonia upon chloride of benzoyl, as also by several other reactions with benzoyl compounds.

A yellowish crystalline substance, C6H5.CO.CO.C6H5, formed from benzoin by the action of oxidizing agents, and consisting of a doubled benzoyl radical.

mation or decoction. It is also found in the urine of infants and herbivorous animals. It crystallizes in the form of white, satiny flakes; its odor is aromatic; its taste is pungent, and somewhat acidulous. -- Benzoic aldehyde, oil of bitter almonds; the aldehyde, C6H5.CHO, intermediate in composition between benzoic…

A white crystalline substance, C14H12O2, obtained from benzoic aldehyde and some other sources.

A white crystalline powder used as an intestinal antiseptic; beta-naphthol benzoate.

an intestinal antiseptic and as a substitute for creosote in phthisis. It is a colorless crystalline pewder.

g of a double twelve-sided pyramid; -- so called because the planes of this form occur on crystals of beryl.

Sprinkled over; strewed. His face besprent with liquid crystal shines. Shenstone. The floor with tassels of fir was besprent. Longfellow.

ng naturally in beetroot molasses and its residues, from which it is extracted as a white crystalline substance; -- called also lycine and oxyneurine. It has a sweetish taste.