. 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. and complicated. The engr. repre-sents the most common and useful apparatusof this kind, and the one almost exclusivelyemployed in the laboratory. It is used asfollows:—After the fluid and other matters (ifany) are put into the still, the head is placedon and
. 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. and complicated. The engr. repre-sents the most common and useful apparatusof this kind, and the one almost exclusivelyemployed in the laboratory. It is used asfollows:—After the fluid and other matters (ifany) are put into the still, the head is placedon and connected with the wovm-tub or refri-gerator, and the joints are all securely ordinary liquids, a stiff paste made withlinseed meal and water, to which a little chalkmay be added, answers well for this corrosive liquids, nothing is better thanelastic bands or rings interposed between thejoints, which are then brought home, as it iscalled, with screws or clamps. Heat is nextapplied, and the worm-tub is supplied withcold water in sufficient quantity to preserve itscontents at a proper temperature; the applica-tion of the heat being so regulated that theliquid may drop from the end of the refrige-rator quite cold and unaccompanied with va-pour. For highly volatile liquids a closedreceiver should be a. Body of stiU, which may be either placed in a steam jacket or in a brick firnace. b. Still head or capital. c. Worm-tub. d. Pewter-worm or refrigerator. e. Cold-water Waste-pipe. g. Receiver. Of the various forms of distillatory appa-ratus that patented by Coffey in 1832 is theone almost universally employed in thiscountry. It yields the strongest spirits ob-tainable on a large scale. Coffees still (ofwhich a drawing is given on the next page)effects a great economy in the expenditui-eof heat, by causing the liquid to be exposed to a very extended heated service j whilstit effects the evaporation of the alcoholfrom the wash by passing a curr
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