Formulary for the preparation and mode of employing several new remedies : namely, morphine, iodine, quinine, cinchonine, the hydrocyanic acid, narcotine, strychnine, nux vomica, emetine, atropine, picrotoxine, brucine, lupuline, &c. &c. / with an introduction and copious notes by the late Charles Thomas Haden, esq. ; translated from the French of the third edition of Magendil's 'Formulaire'.

  • Magendie, Francois, 1783-1855.
Date:
1824
Catalogue details

Licence: Public Domain Mark

Credit: Formulary for the preparation and mode of employing several new remedies : namely, morphine, iodine, quinine, cinchonine, the hydrocyanic acid, narcotine, strychnine, nux vomica, emetine, atropine, picrotoxine, brucine, lupuline, &c. &c. / with an introduction and copious notes by the late Charles Thomas Haden, esq. ; translated from the French of the third edition of Magendil's 'Formulaire'. Source: Wellcome Collection.

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

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    boiling and evaporation in a water bath, the greatest part of the odorous matter of the gentian may be driven off. The bitter acid is also taken up by the magnesia, and the yellow bitter principle remains partly free, and partly combined with the magnesia, to which it gives a fine yellow colour. The greater part of the bitter principle may then be obtained pure and isolated by boiling the magnesia in ether, and evaporating the solution. If it be desirable to separate still more of the bitter principle which the ether has failed to take from the magnesia, it may be done by digestion in enough oxalic acid to make the liquor acidulous. The acid unites with the magnesia, and the bitter prin- ciple, which is left free, may be obtained by the means indicated above. PROPERTIES OF GENTIANINE. Gentianine is yellow, inodorous, and pos- sesses very strongly the aromatic bitterness of gentian; more decidedly so, however, when it is dissolved in an acid. It is very soluble in ether and in alcohol, and may be separated from them by sponta- neous evaporation in the form of very small, yellow, needle-like, crystals. It is much less soluble in cold water, which it renders, how-