The druggist's general receipt book : comprising a copious veterinary formulary, numerous recipes in patent and proprietary medicines, druggists' nostrums, etc., perfumery and cosmetics, beverages, dietetic articles, and condiments, trade chemicals, scientific processes, and an appendix of useful tables / by Henry Beasley.

  • Beasley, Henry
Date:
1872
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Licence: Public Domain Mark

Credit: The druggist's general receipt book : comprising a copious veterinary formulary, numerous recipes in patent and proprietary medicines, druggists' nostrums, etc., perfumery and cosmetics, beverages, dietetic articles, and condiments, trade chemicals, scientific processes, and an appendix of useful tables / by Henry Beasley. Source: Wellcome Collection.

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    flask and add boiling water to make up to half a pint; when cool, strain it, and dip paper in it. More colour may be extracted from the litmus by hot water, but the liquid will require to be concentrated by evaporation. [Acids change the colour to red, but it does not become green with alkalise.] Reel Litmus Paper. As the last, adding to the strained infusion a few drops of nitric acid, or of pure acetic acid. Dr. I'Aeaday recommends holding blue litmus paper over a large jar, into which a few drops of hydrochloric acid have been introduced, till sufficiently reddened. Rose Papier. Make a strong infusion of the petals of the red rose, and dip unsized paper in it. Dipped in au alkaline solution, so weak as not to affect turmeric paper, it assumes a bright green colour. Manganese Paper. Dip paper in a solution of sulphate of manganese. [It becomes black in an ozonized atmo- sphere.] Rhubarb Paper. Dip paper in a strong infusion of rhubarb, and dry it. [Alkalies render it brown. It is not, like turmeric paper, affected by boracic acid.] Starch Paper. This is merely paper imbued with starch paste. Cotton cord is sometimes used instead of jiaper. [As a test for iodine, which it turns blue.] Turmeric Paper. Boil 1 oz. of coarsely powdered tur- meric root in half a pint of water for half an hour, and strain: dip paper in the liquid, and dry it. [It is ren- dered broivn by alkalies, and also by boracic acid and borates.] Test Solutions, Ac. [The vegetable preparations are here placed first.] Tincture and Infusion of Red Cabbage. Digest red cabbage with rectified spirit in a warm place for a few days; strain, distil off most of the spirit, and evaporate what remains to the consistence of syrup. It will keep for years. When required for use, dilute it with a little water; or the concentrated infusion directed above for the paper may have a little spirit added to it. [If the cabbage leaves be well dried, they may be kept in a close vessel fbr use, and a strong infusion made when wanted.] ■dckl Infusion of Red Cabbage. Dr. Faraday directs