Materia medica and pharmacy : for the use of medical and pharmaceutical students preparing for examination / by W. Handsel Griffiths ; edited, and in part written, by George F. Duffey.

Date:
1879
Catalogue details

Licence: Public Domain Mark

Credit: Materia medica and pharmacy : for the use of medical and pharmaceutical students preparing for examination / by W. Handsel Griffiths ; edited, and in part written, by George F. Duffey. Source: Wellcome Collection.

Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.

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    Morphiae Acetas. 1. Decompose hyclrochlorate of morphia by ammonia. 2. Treat the morphia so precipitated with acetic acid to form acetate of morphia, which is obtained as a dry powder by evapora- tion and drying with a gentle heat. duiniae Sulphas. 1. Exhaust the bark of its alkaloids by hydrochloric acid. 2. Precipitate the alkaloids by adding soda, chloride of sodium being formed and remaining in solution. 3. Add sulphuric acid to the precipitate to form sulphate of quinia and of cinchona. 4. Set aside to crystallise. The sulphate of quinia separates first. Santoninum. 1. Boil bruised santonica with lime and water to form santonate of lime. 2. Precipitate the santoninum by the action of hydrochloric acid; chloride of lime is thus formed, and is held in solution. 3. Skim off the oily matter and decant the fluid from the pre- cipitate. 4. Wash the precipitate with water and with ammonia to free it from acid. 5. Decolorise by animal charcoal, and then dissolve out the santonin by boiling spirit. 6. Set aside to crystallise in the dark and preserve in Jbottles protected from the light, lest the crystals should become yellow- coloured. Strychnia. 1. Exhaust the seeds, by digestion in alcohol and water, of the igasurates of strychnia and brucia. 2. Add acetate of lead to form acetates of strychnia and brucia, igasurate of lead being precipitated. 3. Add ammonia to precipitate the alkaloids, acetate of ammonia being formed and held in solution, 4. Dissolve the precipitated alkaloids in spirit, and evaporate the spirituous solution to deposit the strychnia, which separates first, brucia remaining in solution. 5. Wash the strychnia thus obtained until the washings no longer become red with nitric acid, shoAving the absence of brucia. 6. Dissolve finally in boiling water and crystallise.