Thomson's Conspectus of the British pharmacopoeias.

  • Anthony Todd Thomson
Date:
1852
Catalogue details

Licence: Public Domain Mark

Credit: Thomson's Conspectus of the British pharmacopoeias. Source: Wellcome Collection.

    225/248 page 197
    the stomach, and have passed the pylorus; and treat the secondary symptoms by antiphlogistic measures. WOLFSBANE. See Monkshood. Method of distinguishing the fulloiving vegetable Alkaloids—Atropia, Brucitty Delphia, Emetina, Morphia, Solania, Strychnia, Veratria — when they are in powder. Treat the powder, first with nitric acid, which is coloured red by Brucia, Delphia, Morphia, and the Strychnia of commerce, but not by pure strjchnia. If the reddened acid become of a violet hue on the addition of protochloride of tin, after the nitric solution has cooled, the alkaline powder is Brucia: if the reddened acid gradually become black and carbonaceous, it is Delphia. If the powder be soluble without de- composition, and decompose iodic acid, evolving free iodine, it is Morphia: if it is not fusible, and does not decompose iodic acid, it is Strychnia. If the powder greens, instead of reddening nitric acid, it is Solania: if it is insoluble in aether, and does not redden nitric acid, it is Emetina: if it be soluble in aether, and does not redden nitric acid, but melts when heated and volatilizes, it is Atropia: if it is thus affected by aether and nitric acid, but is not volatilized, it is Veratria.'
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