Further observations on the internal use of the hydro-cyanic (prussic) acid : in pulmonary complaints; chronic catarrhs; spasmodic coughs; asthma; hooping-cough; and some other diseases. With full directions for the preparation and administration of that medicine / by A.B. Granville.

  • Granville, A. B. (Augustus Bozzi), 1783-1872.
Date:
1819
Catalogue details

Licence: Public Domain Mark

Credit: Further observations on the internal use of the hydro-cyanic (prussic) acid : in pulmonary complaints; chronic catarrhs; spasmodic coughs; asthma; hooping-cough; and some other diseases. With full directions for the preparation and administration of that medicine / by A.B. Granville. Source: Wellcome Collection.

    14/88 (page 8)
    t [8] carbonate of lime, drawing off, afterwards, ~ only of the whole by a second distillation. By this method the acid is obtained at an uni¬ form degree of concentration. Vauquelin s Process. Into a solution consisting of two ounces of cyanuret of mercury and sixteen ounces of water, pass as much sulphuretted-hydrogene gas as will serve to decompose the salt, leaving an excess of the gas. Filter the liquor to se¬ parate the sulphuret of mercury formed, and treat the filtered liquor with an excess of sub¬ carbonate of lead. Shake the bottle until the excess of sulphuretted-hydrogene be absorbed. Filter once more, and the remaining liquor V . I will be diluted hydro-cyanic acid, of a proper strength for medical purposes.* The prussic or hydro-cyanic acid is not found * See at the end of this paper the Latin formula, taken from the Pharmacopeia of the Faculty of Medicine of Paris, 1818.+ -f Mr. Garden, chemist, of Ox ford-street, is the only per¬ son, to my knowledge, who has prepared the medicinal prussic acid, according to both the above methods; each of which is perfectly good for the purpose of practice : and I have sa¬ tisfied myself, by occular demonstration, that every precaution was taken to ensure the accurate result of the operations.