. Chemistry: general, medical, and pharmaceutical, including the chemistry of the U. S. Pharmacopia. A manual on the general principles of the science, and their applications in medicine and pharmacy. an acid, orvice versa; carbonates added to acetic acid yield acetates, to nitricacid nitrates, to sulphuric acid sulphates. Many illustrations ofthis general process occur in pharmacy. Evaporation of water from a liquid is best conducted in wideshallow vessels rather than in narrow deep ones, as the steam canthus quickly diffuse into the air and be conveyed rapidly away •hence a small round-botto
. Chemistry: general, medical, and pharmaceutical, including the chemistry of the U. S. Pharmacopia. A manual on the general principles of the science, and their applications in medicine and pharmacy. an acid, orvice versa; carbonates added to acetic acid yield acetates, to nitricacid nitrates, to sulphuric acid sulphates. Many illustrations ofthis general process occur in pharmacy. Evaporation of water from a liquid is best conducted in wideshallow vessels rather than in narrow deep ones, as the steam canthus quickly diffuse into the air and be conveyed rapidly away •hence a small round-bottomed basin, heated as shown in Fig. 15, isfar more suitable than a test-tube for such operations. On themanufacturing scale iron or iron lined with enamel or semi-por-celain, copper, tinned copper, or solid tinned pans are used. Up totwelve or eighteen inches diameter, pans, basins, or dishes madeof Wedgwood ware or porcelain composition (Fig. 16) may beemployed. Small dishes may be supported by retort stands (), larger by cylinders (Fig. 16), to which the dish is, if less indiameter than the cylinder, adapted by such flat rings or diaphragmsas are shown in the figure. Fig. 15. Fig.
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