nitro calcite

[Pref. nitro- (1), and English Min: An efflorescent silky mineral occurring in calcite.] limestone caverns, and on covered calcareous soils. Color, white; taste, bitter. Composition: Nitric acid, 59-4; lime, 307; water, 9*9=100, corresponding to the formula, CaONO3+HO. ni-tro-form, subst . [Pref. nitro- (2), and English form (yl).] Chem.: CH(NO2)3. Trinitro-methane. A nitro met hide prepared by boiling triaceto-nitrile with atmosphere and entering into a great variety of combinations. It may be obtained by burning water. The residual gas, when freed from phosphoric pentoxide, P2O5, is nitrogen. Very pure nitrogen may be obtained by pa ing chlorine into a solution of ammonia. It is destitute of color, taste, and odor, and is incapable of sustaining combustion or animal existence, though containing no positively poisonous properties. It is best char acterized by its negative properties. Nitrogen acts in the atmosphere chiefly as a diluent to moderate the activity of the oxygen. It has recently been liquefied with the aid of cold and a high pre ure. It combines with oxygen, though indirectly, forming well-known compounds. [AZOTE.]