Elements of pharmacy, materia medica, and therapeutics. / By William Whitla.

  • Whitla, William, 1851-1933.
Date:
1882
Catalogue details

Licence: Public Domain Mark

Credit: Elements of pharmacy, materia medica, and therapeutics. / By William Whitla. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    Sulphur Prsecipitatum (S). (12S + 3CaH ,0o = 2CaS3 + CaS.O, + 3H..0 l2CaS, + CaS,03 + 6HC1 = 6S, + 3CaCL + SBLO (a)—A greyish-yellow, soft powder, free from gritti- ness, and from the smell of Sulphuretted Hydrogen (H„S). b)—Entirely volatilised by heat. Under the micro- ™ / scope it is seen to consist of opaque globules s without any admixture of crj'stalline matter; (absence of Sulphate of Calcium), (c)—When heated in an open vessel it burns with a blue flame, and the evolution of Sulphurous Acid. Sulphur Sublimatum (S). /(«)—A slightlj' gritty powder, of a fine greenish- yellow colour, without taste or smell, unless when heated ; burning in open vessels, with a blue flame, and the evolution of Sulphui'ous Acid. ^ J (J)—Entirely volatilised by heat; does not redden > moistened litmus paper (absence of traces of Sulphuric (H^SO,) or Sulphurous (H^SOj) Acids). [c]—Solution of Ammonia (NH,HO) shaken with it and filtered docs not, on evaporation, leave \ any residue (absence of Orpimeut—As._,S3). Sulphuris lodidum (S,I,). S, + L = S,I, irt)—A greyish-black, solid substance, with a radi- ated crj'stalline appearance, (i)—It has the smell of Iodine, and stains the skin Tksts—{ when apjilicd to it. ((•)—If 100 grains be thoroughly boiled with water, the Iodine will (lass off in vapour, and about 20 grains of Sulphur will remain. Zinci Acetas (Zn (C,H,0;,2H,0). ZnCO,,2ZnO + 6HC,H:,0, = 3(Zn2C,H30,) + 3H,0 + CO,