The practice of pharmacy : a treatise on the modes of making and dispensing official, unofficial, and extemporaneous preparations, with descriptions of their properties, uses, and doses intended as a hand-book for pharmacists and physicians and a text-book for students / [Joseph Price Remington].

  • Remington, Joseph P. (Joseph Price), 1847-1918.
Date:
1894
Catalogue details

Licence: Public Domain Mark

Credit: The practice of pharmacy : a treatise on the modes of making and dispensing official, unofficial, and extemporaneous preparations, with descriptions of their properties, uses, and doses intended as a hand-book for pharmacists and physicians and a text-book for students / [Joseph Price Remington]. Source: Wellcome Collection.

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    has a universal ball-and-socket joint, which eflables it to be used in any position. The very convenient foot-bellows, shown in Fig. 93, may be used in connection with it for producing the blast. The sides of this Fig. 86. Fig. 87. Fig. Fig. 89. Fig. 90. Fig. 91. Berzelius's. Plattner's. Plattner's (dissected). bellows are of stout leather, and the reservoir of air beneath is obtained by stretching and fastening a circular piece of thin rubber cloth over the lower orifice and preventing too great expan- sion and rupture by enclosing it in a net: this form, with the reservoir below, is prefer- able to that formerly in use, which had the rubber cloth above; the advantages are greater protection against injury from falliflg Fig. 93. Fig. 92. Gas blow-pipe. Fool-bellows. articles, and less obstruction to the valves through sucking in dust from the floor. Crucible Operations.—A -crucible is a cup-shaped vessel made of platinum, silver, black lead, iron, porcelain, wedgwood-ware, or clay, and intended to withstand a very powerful heat. It is used for fusing metals or heating metallic oxides or organic substances, and is very useful in chemical analysis. The Hessian crucible (see Fig. 94) is the cheapest: it is unfitted for delicate operations, for, although capa- ble of withstanding great heat, its porous character permits the ready absorption of many substances. The black-lead crucible is more expen-