. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. ion, as shownby the arrows in the section, the products of combustion aremade to impart nearly the whole of their heat to the water bywhich they are surrounded. At the commencement, someburning paper or wood shavings are inserted at the orifice m,to establish a draught in this circuitous chimney. The air isadmitted into the ashpit at the side, in regulated quantities,through a small square door, moveable round a rod which runshorizontally along its middle line. This swing valve is a
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. ion, as shownby the arrows in the section, the products of combustion aremade to impart nearly the whole of their heat to the water bywhich they are surrounded. At the commencement, someburning paper or wood shavings are inserted at the orifice m,to establish a draught in this circuitous chimney. The air isadmitted into the ashpit at the side, in regulated quantities,through a small square door, moveable round a rod which runshorizontally along its middle line. This swing valve is actedupon by an expanding bar (see Heat-Regulator), whichopens it more or less, according to the temperature of tbestove apartment in which the eggs are is the upper orifice of the boiler, by which the hotter and consequently lighter par-ticles of the water continually ascend, and are replaced by the cooled particles, whichenter the boiler near its bottom, as shown in fig. 578, at r. Into further details relativeto the boiler it is needless to enter; for though its form, as designed by M. Bonnemain,. 670 INCUBATION, ARTIFICIAL. is excellent and most economical of heat for a charcoal fire, it would not suit one of pit-coal, on account of the obstruction to the pipes which would soon be occasioned by it soot.
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
