Elements of pharmacy, materia medica, and therapeutics. / By William Whitla.
- William Whitla
- Date:
- 1882
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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![Fig. 5. There is, however, one rule which is almost universally neg- lected, and it is of importance :—If there be a substance like prussic acid, strychnia, aconite, arsenic, corrosive sublimate, &c., ordered in a mixture, it should be put iu the l<(st thing before corking, unless there be some reason to the contrary. The force of this is obvious, for, if this be the dispenser's habit or rule, the possibilitj' of bis putting it in twice is out of the question ; and often when the ;itteution is unavoidably arrested the ablest will forget what he has just accomplished. All mixtures should be briskly shaken before the label is put on to ensure thorough incorporation. Distilled watei' should be invariably used; no doubt in many instances it will be of little moment, but a mixture made at one time with distilled water and at another with plain foun- tain water will taste differently ; and, on the whole, it will be found advisable always to use it to ensure uniformity. Should a mixture be filtered if not bright and clear ? Unless specially ordered it should not, or unless sonu; of the articles employed in its ])rcp;iration were Tiot as l)right as they should be ; it should always be strained Ihiougli wetled wool or low,](https://iiif.wellcomecollection.org/image/b21507296_0027.jp2/full/800%2C/0/default.jpg)
