On poisons in relation to medical jurisprudence and medicine . ntonin the readeris referred to Fig. 64, p. 653. These two vegetable principles differ from strychnia in their proper-ties. When heated in close tubes, they give off acid vapors. Salicinis soluble in water. Santonin is not soluble in water, but is dissolvedby alcohol. Tannic acid and the chloriodide of potassium and mer-cury do not precipitate the solutions, while they readily precipitatethose of strychnia. Nitric, iodic, and sulphomolybdic acids have noeffect upon either. Sulphuric acid does not change santonin, but givesa rose-re
On poisons in relation to medical jurisprudence and medicine . ntonin the readeris referred to Fig. 64, p. 653. These two vegetable principles differ from strychnia in their proper-ties. When heated in close tubes, they give off acid vapors. Salicinis soluble in water. Santonin is not soluble in water, but is dissolvedby alcohol. Tannic acid and the chloriodide of potassium and mer-cury do not precipitate the solutions, while they readily precipitatethose of strychnia. Nitric, iodic, and sulphomolybdic acids have noeffect upon either. Sulphuric acid does not change santonin, but givesa rose-red color to salicin. Salicin undergoes no change with nitricand iodic acids, but acquires a deep maroon color from sulphomolybdicacid. The crystals of santonin closely resemble (in microscopical ap-pearance) those of salicin, but they are distinguished from salicin andother alkaloids and principles by acquiring a brilliant yellow color onexposure to sunlight, without undergoing any change of form. Organic Mixtures—The Tissues.—A similar method of research. Crystals of saliciu, magnified 124diameters. 688 STRYCHNIA IN ORGANIC LIQUIDS. answers for both. If there is much water present, this must be evap-orated to an extract in a water-bath. The strychnia may be thenobtained by filtration in a state fit for preliminary testing. An organic liquid containing strychnia, dissolved, will yield a precip-itate after filtration by the chloriodide of potassium and mercury, andthe ioduretted iodide. The liquid will also have an intensely bittertaste. The dialytic process by a tube (see ante, p. 154) applied to asmall quantity of the liquid, will be found a convenient method ofpreliminary testing for the presence of strychnia. It will allow of theseparation of strychnia, when in combination with an acid and in astate of solution, from blood, mucus, and other mixed organic matterspresent in the stomach or in articles of food. The tests above men-tioned may be applied to the dialyzed, in pla
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectpoisons, bookyear1875
