. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. te /,which is covered with ashes or sand. The fire-placeopens above this aperture, and its outlet is providedwith a moveable iron cover g, in which there is a smallhole for the issue of the gases. The sole of the kilnconsists of a cast iron slab h, which may be raised bymeans of a hook i upon it. This is drav/n back afterthe carbonization is completed, whereby the charcoalfalls from the coaking space into a subjacent vault. Thevolatile products are carried off by the pipe k, and led
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. te /,which is covered with ashes or sand. The fire-placeopens above this aperture, and its outlet is providedwith a moveable iron cover g, in which there is a smallhole for the issue of the gases. The sole of the kilnconsists of a cast iron slab h, which may be raised bymeans of a hook i upon it. This is drav/n back afterthe carbonization is completed, whereby the charcoalfalls from the coaking space into a subjacent vault. Thevolatile products are carried off by the pipe k, and ledinto the condensing cistern ; the gases escaping to thefire-place where they are burned. The iron slab is protected from the corrosion of theacid vapors by a layer of coal ashes. CHICA is a red coloring principle made use of in America by some Indian tribesto stain their skins. It is extracted from the bignonia chica by boiling its leaves inwater, decanting the decoction, and allowing it to settle and cool, when a red matterfalls down, which is formed into cakes and dried. This substance is not fusible, and. 280
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
