Powder, Escharot′ic (Arsenical). Syn. Pulvis escharoticus arsenicalis, L.; Poudre du Frères Cosme, Fr. Prep. 1. (Original formula.) From white arsenic, 12 gr.; burnt hartshorn, 1⁄2 dr.; cinnabar, 1 dr.
2. (P. Cod.) Red sulphuret of mercury and powdered dragon’s blood, of each 2 parts; levigated arsenious acid, 1 part; carefully mixed together. See Caustic, Arsenical.
Powder of Extract of Col′ocynth (Compound). Syn. Pulvis extracti colocynthidis compositi, L. Prep. From compound extract of colocynth (Ph. L. 1836), dried by a gentle heat, and powdered.
Obs. This, like many other articles employed by lazy dispensers, does not represent the preparation for which it is used as a substitute; whilst, from its peculiar character, it is very open to sophistication—a practice, we regret to say, very general with certain druggists. Indeed, some of these parties make this article by simply throwing the ingredients of the extract into a pan along with a little water, and, when they have become soft, stirring them together with a spatula, after which they are desiccated and powdered. This is then labelled by certain houses, “Pulv. Ext. Coloc. co.—P. L.,” and sold to their unfortunate customers as such, although no such an extract has been in the Ph. L. since that of 1836.
Powder, Faynard’s. The charcoal of beechwood, finely powdered. (Paris.) Used in piles, and as a styptic.
Powder, Fe′ver. See Powder, Antimonial (above).
Powder of Flint. Syn. Silex contritus (Ph. L.), L. Prep. As powdered glass. (See page 805.) It is ordered in the Ph. L. to be employed, instead of magnesia, for the purpose of mechanically dividing the essential oils used in the preparation of distilled water. It is also used as an escharotic.
Powder, Fly. Prep. From white arsenic, 5 oz.; white sugar, 6 lbs.; rose pink, 2 oz.; mix, and put 6 dr. in each paper. Used to kill flies. It is poisonous, and should be employed with great caution, particularly where there are children.
Powder, Fu′′migating. Syn. Pulvis fumalis, L. Prep. (Ph. Russ.) Amber, mastic, and olibanum, of each 3 parts; storax, 2 parts; benzoin and labdanum, of each 1 part; reduce them to coarse powder, and mix them well. See Fumigation.
Powder, Galls of (Compound). Syn. Pulvis gallæ compositus, L. See Powder, Astringent.