Volume 1

The elements of materia medica and therapeutics / by Jonathan Pereira.

  • Pereira, Jonathan, 1804-1853.
Date:
1854-1857
Catalogue details

Licence: Public Domain Mark

Credit: The elements of materia medica and therapeutics / by Jonathan Pereira. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

    869/1034 (page 839)
    ^vho hud been engaged in picking the crystals of the sulphate from their mother ^''^UsES.—Sulphate of iron is to be preferred to other ferruginous compounds in cases in which there is great relaxation of the solid parts, with immoderate discharges. When the long-continued use of ferruginous compounds is re- quired, it is less adapted for administration than some other preparations ot n-on, on account of its local action on the alimentary canal. It is employed in lump, powder, or solution, as a styptic, to check hemorrhage from numerous small vessels. A solution of it is applied to ulcerated surfaces and to inucous membranes to diminish profuse discharges, as in chrome ophthalmia, leucor- rhoea, and gleet. Mr. Yincent used it in prolapsus am. A solution ot three drachms of the sulphate in five ounces of water has been used by V elpeau to repress erysipelas. . Internally, it is administered in passive hemorrhages, on account ot its supposed astringent influence over the system generally ; also m immoderate secretion and exhalation—as in humid asthma, chrome mucous catarrh, old dysenteric affections, colliquative sweating, diabetes, leucorrhoea, and gleet. In intermittents it has been employed as a tonic. It has also been found serviceable against tape-worm. Its other uses are the same as the ferruginous- compounds before mentioned. Administration.—The dose of it is from one to five grains m the form ot pill. If given in solution, the water should be recently boiled, to expel the atmospheric air dissolved in it, the oxygen of which converts this salt into a persulphate. A very agreeable method of exhibiting sulphate of iron is in solution in carbonic acid water. Mr. Webb prepared it for me of three strengths: one containing three grains, a second six grains, a third nine grains of the crystaUised sulphate to each bottle of carbonic acid water (bottle soda water). For local purposes, solutions of it are employed of various strengths, according to circumstances. In chronic ophthalmia, we may use one or two grains to an ounce of water; as an injection in gleet, from four to ten grains. It has been used to disinfect night soil the products are sulphate of ammo- nia and hydrated sulphuret of iron. 1. FERRI SULPHAS EXSICCATUM,E.; FerriSulphas Siccatum, J).-, Dried Sulphate of Iron. (Expose any convenient quantity of Sulphate of Iron to a moderate heat in a porcelain or earthenware vessel, not glazed with lead, till it is converted into a dry greyish-white mass, which is to be reduced to powder, E) Take of Granulated Sulphate of Iron, any convenient quantity. Expose the salt in a porcelain capsule to an oven heat not exceeding 400°, until aqueous vapours cease to be given off, and having then reduced it to a fine j^owder, preserve it in a well-stopped bottle, D.)—By exposure to a moderate heat, the crystals lose fths of their water of crystallisation; so that 85 grains of dried sulphate are equivalent to 139 grains of the crystaUised sulphate, or 3 grains are equal to ^-rV grains of the crystals. The dried sulphate is used in the following preparation. 2. PILl]L./E FERRI SILPRATIS, E.; VilU of Sulphate of Iron. (Dried Sulphate of Iron, two parts ; Extract of Taraxacum, Jive parts; Conserve ' Complex-llendtis, xix. 11-1.