A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . DISTILLATION. 459 The worm or condenser is frequently constructed of earthenware, and set in an earthen-ware vessel; these are very convenient when the operation is not to be conducted on avery large scale, and only at a moderate temperature. They are now to be obtained of allmanufacturers of stone-ware articles. More commonly the worm is of copper, tin, or cop-per lined with silver, and in some rare cases, where the liquids to be distilled act upon bothcopper a
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . DISTILLATION. 459 The worm or condenser is frequently constructed of earthenware, and set in an earthen-ware vessel; these are very convenient when the operation is not to be conducted on avery large scale, and only at a moderate temperature. They are now to be obtained of allmanufacturers of stone-ware articles. More commonly the worm is of copper, tin, or cop-per lined with silver, and in some rare cases, where the liquids to be distilled act upon bothcopper and silver, of platinum. {Fie/. 232.) A tube of the shape shown in fig. 233 is found more convenient than the worm, onaccount of its exposing a larger surface, and also because it can be placed into a vessel of aprismatic form which occupies but little space. The water employed for condensationenters at the bottom and passes out at the top. 233 234 (a I cz D. TTMTirl Gndilia Condenser is represented in fp. 234. It consists of two conical vessels ofmetal, of unequal size, flie smaller being fixed within the other, and the space between themclosed at the bottom. These are placed in a tub filled with cold water, which comes in con-tact with the inner and outer surfaces of the cones, while the space between is occupied bythe vapor to be condensed. This condenser is subject to the objection which applies to thecommon worm, that it cannot be easily and efficiently cleaned. To obviate this, Professor Mitscherlich has proposed a very simple modification in itsform, in which the inner cone is movable, so that, v/hen taken out, the intervening spacebetween it and the outer cone can be cleaned, and then the inner cone replaced previouslyto commencing an o])eration. Dhtillalion of Spirits.—In the manufacture of m-dent spirits, the alcoholic liquor ob-tained by fermentation of a saccharine solution is submitted to distillation ; the alcohol,being mor
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
