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o group, recently (1887) isolated as a stable, colorless gas, with a peculiar, irritating odor. As a base it forms distinct salts. Called also diamide, amidogen, (or more properly diamidogen), etc.

acid (Chem.), hydrogen chloride; a colorless, corrosive gas, HCl, of pungent, suffocating odor. It is made in great quantities in the soda process, by the action of sulphuric acid on common salt. It has a great affinity for water, and the commercial article is a strong solution of the gas in water. It is a typical acid…

(Chem.), a colorless, mobile, volatile liquid, HCN, having a characteristic peach-blossom odor. It is one of the most deadly poisons. It is made by the action of sulphuric acid on yellow prussiate of potassium (potassium ferrocyanide), and chemically resembles hydrochloric and hydrobromic acids. Called also prussic aci…

atile liquid, HF, very corrosive in its action, and having a strong, pungent, suffocating odor. It is produced by the action of sulphuric acid on fluorite, and is usually collected as a solution in water. It attacks all silicates, as glass or porcelain, is the agent employed in etching glass, and is preserved only in v…

A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air (hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those o…

ves (Erythroxylon coca), and extracted as a thick, yellow oil, having a pungent taste and odor.

A rich, powerful, perfume, obtained from the volatile oil of the flowers of Canada odorata, an East Indian tree. [Also written ylang-ylang.]

hereby; sa, when a harmless snake imitates a venomous one in color and manner, or when an odorless insect imitates, in color, one having secretion offensive to birds.

The perfume or odors exhaled from spices and gums when burned in celebrating religious rites or as an offering to some deity. A thick of incense went up. Ezek. viii. 11.

toria, I. Anil, Nereum tinctorium, etc. It is a dark blue earthy substance, tasteless and odorless, with a copper-violet luster when rubbed. Indigo does not exist in the plants as such, but is obtained by decomposition of the glycoside indican.

Flowing in. "With influent tide." Cowper. "Influent odors." Mrs. Browning.

gray metallic scales, resembling plumbago, soft but brittle, and emitting a chlorinelike odor. Symbol I. Atomic weight 126.5. If heated, iodine volatilizes in beautiful violet vapors.

Any of several isomeric iodine derivatives of the cresols, C6H3I(CH3)OH, esp. one, an odorless amorphous powder, used in medicine as a substitute for iodoform.

A yellow, crystalline, volatile substance, CI3H, having an offensive odor and sweetish taste, and analogous to chloroform. It is used in medicine as a healing and antiseptic dressing for wounds and sores.

A shrubby plant of the genus Jasminum, bearing flowers of a peculiarly fragrant odor. The J. officinale, common in the south of Europe, bears white flowers. The Arabian jasmine is J. Sambac, and, with J. angustifolia, comes from the East Indies. The yellow false jasmine in the Gelseminum sempervirens (see Gelsemium). S…

Chinese mode of worship. -- Joss stick, a reed covered with a paste made of the dust of odoriferous woods, or a cylinder made wholly of the paste; -- burned by the Chinese before an idol.

ds of the ketones. In general they are unstable oily substances having a pungent aromatic odor.

. Methyl ketol, a weak organic base, obtained as a white crystalline substance having the odor of fæces.

radicals. In general the ketones are colorless volatile liquids having a pungent ethereal odor.

of certain hydroxy acids. In general, they are colorless liquids, having a weak aromatic odor. They are so called because the typical lactone is derived from lactic acid.