The elements of medical chemistry : embracing only those branches of chemical science which are calculated to illustrate or explain the different objects of medicine, and to furnish a chemical grammar to the author's Pharmacologia . * The Alembic appears to have been the most ancient form of a distil-ling apparatus. Both Dioscorides and Pliny mention the au0it- (Jimbix)which is described by the latter of these writers, as a hemispherical irorcover, luted upon the earthen pots in which mercury was procured by tindistillation of Cinnabar; it is, however, probable that the Ambix was inthe time of
The elements of medical chemistry : embracing only those branches of chemical science which are calculated to illustrate or explain the different objects of medicine, and to furnish a chemical grammar to the author's Pharmacologia . * The Alembic appears to have been the most ancient form of a distil-ling apparatus. Both Dioscorides and Pliny mention the au0it- (Jimbix)which is described by the latter of these writers, as a hemispherical irorcover, luted upon the earthen pots in which mercury was procured by tindistillation of Cinnabar; it is, however, probable that the Ambix was inthe time of Pliny a mere plain Still, without any beak or gutter, since hementions the mercury being wiped off in small drops from the inside of thevessel, the necessity of which manipulation would be superseded by the invention-of a beak. The Alchemists have adopted this instrument, pre-fixed the Arabian article al to it? name, and made considerable alteration ^in its form- PARISS MEDICAL CHEMISTRY. 105. 169. In the English* laboratories the use of the Alembicis now almost superseded by that of the Retort and Receiver,whose construction and applications we have next to consider. 170. The Retort is a bottle with a long neck, so bent as tomake with the belly an angle of about sixty degrees. From this form it bas pro-bably derived itsname. The most ca-Ipacious part of the(vessel is termed itsbelly ; its upper partis called an arch orroof; and the bent part, the neck. A Retort may be eitherplain as represented above, or stoppered, as shown in thefollowing figure, in this latter case it is said to be tubulated. 171. To the Retort, a Receiver is a necessary appendage;and this may either be plain, as engraved below (c) or tubu-lated. To some a pipe is added, as may be seen in thefigure representing the apparatus for the distillation of Nitricacid. Such a receiver is principally useful for enabling usto remove the distilled liquid, at different periods of the pro-cess, and is termed a quilled
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Keywords: ., bookcentury1800, booksubjectchemistrypharmaceutica, bookyear1825
