Cooley's cyclopaedia of practical receipts and collateral information in the arts, manufactures, professions, and trades including medicine, pharmacy, hygiene, and domestic economy : designed as a comprehensive supplement to the Pharmacopoeia and general book of reference for the manufacturer, tradesman, amateur, and heads of families . he B. P.) 3. Alcohol of 90g, five parts are mixed withoil of vitriol, 9 parts, in a vessel of copper oriron immersed in cold water; the mixture isnext introduced into a still or retort, and raisedto a state of ebullition as rapidly as possible, asbefore. A fres
Cooley's cyclopaedia of practical receipts and collateral information in the arts, manufactures, professions, and trades including medicine, pharmacy, hygiene, and domestic economy : designed as a comprehensive supplement to the Pharmacopoeia and general book of reference for the manufacturer, tradesman, amateur, and heads of families . he B. P.) 3. Alcohol of 90g, five parts are mixed withoil of vitriol, 9 parts, in a vessel of copper oriron immersed in cold water; the mixture isnext introduced into a still or retort, and raisedto a state of ebullition as rapidly as possible, asbefore. A fresh quantity of alcohol, equal inbulk to the liquid distilled over, is then addedto the liquid in the still, and distillation againhad recourse to. As much concentrated alco-holic solution of potassa as will give it a per-ceptible alkaline reaction is next added todistilled liquor, which is then rectified by theheat of a water bath, as long as the ether whichdistils over has the sp. gr. 720 to -725 at 80°Fahr. Instead of the potassa, a little milk oflime may be used, along with its own bulk ofwater. By allowing the product to stand forsome days over chloride of calcium or quick-lime, and again rectifying it along with oneof these substances, perfectly pure ether maybe obtnined. Obs. The mixture of alcohol with sulphuric ETHYL 665. a. Condenser tube,i, c Glass lube. d. Fuuuel by wbich cold water runs in from the waterbottle h. e. Pipe by which water escapes through / into thebottle g. i. Retort. k. Adapter, connecting the retort with the condenser. I. Adapter, connectLug the condenser with the bottlest,t. A. Wooden ttessel, with movable arms n, o. for sup-porting and adjustiug the heights ol the condenser. acid requires some caution. It is best done byintroducing the alcohol into a suitable vessel,and imparting to it a rapid whirling motion,by which a considerable conical cavity is formedin the centre, and into which the acid may begradually poured with perfect safety. Themixed f
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