The extra pharmacopoeia / by William Martindale ... and W. Wynn Westcott.

  • Martindale, William, 1840-1902.
Date:
1901
Catalogue details

Licence: In copyright

Credit: The extra pharmacopoeia / by William Martindale ... and W. Wynn Westcott. Source: Wellcome Collection.

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

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    THE PRIKOIPAL CHAKGES Ilf THE BRITISH PHARMACOPEIA Effected by the Revision of 1898, Compared with that of 1885. The dual system of Weights and Measures, introducing the Metrie System, has been referred to (p. xii.). The Index, like that of the Extra Pharmacopceia, forms an elaborate Posological Table. As regards strength, dosage, and change in appearance, the following are the most important:— Alcohol, Ethylic (Ethyl Hydroxide).—Has 'five several degrees of dilution,' viz., SriRiTUS Recti- FiCATUS—Anglicised Alcohol (90 per cent.)—slightly stronger than formerly, 70 per cent., 60 per cent., 45 per cent, and 20 per cent. (p. 55). Proof Spirit.—This name is abandoned and, as a rule Alcohol (90 per cent.) has replaced Rectified S])irit, and Alcohol (60 per cent.) Proof Spirit, where these were ordered in B.P. 1885. Spirits.—The spirituous solutions of essential oils, formerly termed Essences (1 to 4) and Spirits (generally 1 to 49), arc now collectively termed Spirits, and are of the strength of 1 in 10, except Spirit of Juniper (1 in ;20). Tinctures.—Alcohol of the most suitable degree of dilution is employed as the menstruum for each drug, and the strength of Tinctures has been so adjusted that they may be arranged in two classes in regard to dose ; (1) dose, 5 to 1 di'achm, and (2) more potent tinctures, dose, 5 to 15 miuims. Standardisation is extended to Tincture of i3elladonna ns well as (0 the other preparations of this drug, all being made from n Liquid Extract. Standardisation is also applied to Liquid Extract of Ipecacuanha from which the A'incgar and Wine are prepared. Tinctures prepared by maceration are not now directed to have their product made up to a prescribed volume.