The common symptoms of catarrh are a copious discharge from the eyes and nose, a hoarseness, and generally a cough, more or less severe. The exciting causes are sudden changes of temperature and exposure to currents of cold air while the body is heated; hence the frequency of colds in hot and changeable weather.
Treat. A light diet should be adopted, and animal food and fermented and spirituous liquors should be particularly avoided. Some mild aperient should be administered; and when the symptoms are severe, or fever or headache is present, small diaphoretic doses of antimonials, accompanied by copious draughts of diluents, as barley water, weak tea, or gruel should be taken. This treatment, except in very bad cases, will generally effect a cure.
In HORSES catarrh is caused by sudden changes of temperature, draughts, and faulty ventilation. Let the animal have plenty of cool fresh air, the body being kept warm by means of horse-cloths and bandages. If necessary, give a mild physic-ball, or a clyster; keep it on a soft, laxative diet, and give it an ounce of nitre daily. Should there be sore throat or troublesome cough apply a mild blister of cantharides or mustard.
The following will be found a serviceable mixture:—Mendererus spirit, 11⁄2 oz.; sweet spirit of nitre, 2 drachms; syrup of sugar, 1⁄2 oz.; camphor mixture, enough to make a 6-oz. mixture. An adult may take two table-spoonfuls of this mixture every 3 or 4 hours. Should the cold in the head be severe and accompanied with cough, it has been recommended to inhale the vapour of pure washed ether by drawing it alternately into the nostrils from a wide-mouthed bottle holding about an ounce, and clutching it in the warm hand until about a fourth of the ounce has been volatilised. This repeated two, three, or four times in 48 hours is said to effect a cure within that time. Persons liable to colds are advised to use the cold bath.
Dr Ferrier’s Remedy for a Cold in the Head.—Hydrochlorate of morphia, 2 gr.; powdered gum Arabic, 2 drachms; subnitrate of bismuth, 6 drachms. Mix. Let a very small quantity be sniffed up the nose every five minutes for 20 or 30 minutes.
Another remedy: Carbolic acid, 10 drops; tincture iodine; chloroform, of each 71⁄2 grams. Place a few drops in a test-tube, and heat cautiously over a spirit-lamp, and when it boils remove, and inhale by the nose. Repeat after a few minutes. Two inhalations are said to be sufficient to cure a cold in the head. (‘Year-book of Pharmacy.’)
CAT′ECHIN. Syn. Catechu′ic acid, Resinous tan′nin. When cubical gambir or catechu, in powder, is treated with cold water, a portion remains undissolved. This is catechin. By repeated solutions in alcohol it may be obtained under the form of white, silky, acicular crystals.
Prop., &c. Catechin strikes a green colour with the salts of iron, but does not precipitate gelatin. When dissolved in caustic potassa, and the solution exposed to the air, it absorbs oxygen, and japonic acid is formed. If, instead of caustic potassa, carbonate of potassa is employed, it is converted into rutic acid.
CAT′ECHU. Syn. Cas′′hew, Cutch, Gam′bir; Cat′echu (Ph. L. E. & D.), Ter′ra Japon′ica, L.; Cachou, Fr. “The extract from the wood of Acacia Catechu, or from the leaf of Uncaria Gambir.” (Pale catechu, Catechu Pallidum, B. P.) Also of the “kernels of areca catechu; probably, too, from other plants.” (Ph. E.) The term is now applied to several extracts similar in appearance and properties to that of Acacia Catechu.
There are several varieties of catechu known in commerce, of which the principal are—