New Remedies; The Method of Preparing and Administering Them Their Effects on the Healthy and Diseased Economy, &C

New Remedies; The Method of Preparing and Administering Them Their Effects on the Healthy and Diseased Economy, &C

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1839 edition. Excerpt: ...to Proust and Gay-Lussac, two parts of good and finely powdered Prussian blue must be boiled with one part of deutoxide of mercury and eight parts of water, until the mixture acquires a bright yellowish tint. It is then filtered; and the filtered liquor, which is the hydrocyanate of deutoxide of mercury--containing, however, some iron--is digested or boiled with an excess of the deutoxide of mercury, whereby the oxide of iron is completely precipitated. As, however, the hydrocyanate is combined with an excess of the oxide of mercury, this must be saturated with free hydrocyanic acid, and the solution be evaporated to induce crystallisation. In this mode the cyanide is formed. The formula of the Pharmacopoeia of the United States, into which the cyanuret has been introduced to serve in the preparation of the hydrocyanic acid, is the same as that adopted in the Codex Medicamentarius of Paris, which was recommended by Berzelius. It is as follows: --Take of red oxide of mercury, three ounces; ferrocyanate of iron, (Prussian blue, ) six ounces; distilled water, three pints. Put the oxide of mercury and the ferrocyanate of iron, previously powdered and thoroughly mixed together, into a glass vessel; and pour upon them two pints of the distilled water. Then boil the mixture, stirring constantly, till it becomes of a yellowish colour; after which filter through paper. Wash the residue in a pint of the distilled water, and filter as before. Mix the solutions, and evaporate by the fire till a pellicle appears; then set the liquor aside that crystals may form. To purify the crystals, dissolve them again in distilled water; filter; evaporate the solution, and set it aside to crystallise.1 The former of these methods is, doubtless, the best, as it ensures.show more

Product details

  • Paperback | 192 pages
  • 189 x 246 x 10mm | 354g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236579437
  • 9781236579430