The per-centage may be calculated by multiplying the French degrees by the coefficient 0·318.
CHLOROCARBONIC ACID. (COCl2). Syn. Phosgene Gas, Carbonic oxydichloride. This compound may be produced by the direct combination of equal volumes of carbonic oxide and chlorine gases under the influence of sunlight (whence its name of “phosgene gas”), when the mixture gradually becomes colourless, and contracts to half its original volume. Chlorocarbonic acid has a peculiar pungent smell, and fumes strongly when exposed to moist air, the moisture of which it decomposes, producing at the same time hydrochloric and carbonic acids.
It is sometimes employed in chemical research for the removal of hydrogen from organic compounds, and the substitution of carbonic oxide, or its elements for the hydrogen.
CHLOROPHYLL. The green colouring matter contained in the leaves, stalks, unripe fruit, and juices of most plants.
CHLORO′SIS. Syn. Green sickness. A disease which principally affects young unmarried females.
Symp. Languor, listlessness, fatigue after the least exercise, palpitation of the heart, flatulency, indigestion, acidity of stomach and bowels, constipation (generally), appetite for unnatural food, general debility, &c. As the disease advances, the skin at first pale, assumes a peculiar greenish tint, the respiration becomes affected, the feet and legs swell, and various organic affections of the viscera ensue. During the early stages of this disease the catamenia are usually pale and scanty, and return at irregular intervals, and as it progresses they disappear altogether.
Treat. This should be tonic and restorative. That recommended under Anæmia may be adopted with advantage. See also Appetite, Atrophy.
Chlorosis, Electuary for—Female Electuary. A greenish-black thick syrup, consisting of sugar, bayberries, carbonate of iron, iron filings, and water. (Buchner.)
Chlorosis Powder—Female Powder—consists of a mixture of anise, sugar, and 14 per cent. of iron filings. (Wittstein.)
Chlorosis Powder—Female Powder, according to Schott and Strauss, is a mixture of violet root, gum Arabic, and a tasteless green powder with 33 per cent. of steel filings. According to Hager, it is composed of 2 parts ferri pulvis, with 3 parts powdered sweet-flag root.