Hermes Handbag

and go up the chimney. To prevent this the hole itself is madHermes Kellye the chimney; bot as this would be too short, and would produce very little current and very little heat, the whole furnace is set under a tall dome. Thus the heated air from the real furnace is confined in this dome, and constitutes a high column of veHermesry light air, which will therefore rife with great force up the dome, and escape at the top. The dome is therefore the chimney, and will produce a draught or current proportioned to its height. Some are raised above an hHermes Birkinundred feet. When all the doors of this house are sluit, and thus no supply given except through the fire, the current and heat become prodigious. This, however, cannot be done, because the workmen are in this chimney, and must have respirable air. But notwithstanding this supply^y the house-doors, the draught of the real furnace is vastly increased by the dome, and a heat produced sufficient for the work, and which could not have been produced
without the dome.
This has been applied with great ingenuity and effect Improve, to a furnace for melting iron from the ore, and an iron"."p"* finery, both without a blast. The common blast iron "'f^r* furnace is well known. It is a tall cone with the apex me ting undermost. The Hermes bagsore and fluxes are thrown into this»TM fron» cone mixed intimately with the fuel till it is full, and *' orc* the blast of most powerful bellows is directed into the
air has come in by the grate, and passed through the * bottom of thisBirkin cone through a hole in the side. The
middle of the fuel, it can hardly be otherwise than near ly saturated with it; and if air be also admitted by the door (which is generally done or something equivalent), the pure air lies above the vitiated air, and during the passage along the horizontal part of the furnace, and along the surface of the metal, it still keeps above it, at least there isHermes outlet on the base metal and calcine it, andHermes Handbags the operation of refining goes on slowly. Trifling circumstances in the form of the arch or canal may tend to promote the jumbling of the airs together, and thus render the operation more expeditious; and as these are but ill understood, or perhaps this circumstance not attended to, no wonder that we fee these considered as so many nostrums of great importance. It were therefore worth while to try the effect of changes in the form of the Toof directed to this very circumstance. Perhaps some little prominence down from the arch of the reverberatory would have this effect, by suddenly throwing the current into confusion. If the additional length of passage do not cool the air too