[ 63 ] 
the ftove, and another N outward, which carries off 
the fmoke. 
Nothing can be more limple than the effeft re- 
fulting from the affemblagc of all thefc parts. The 
heat of the furnace, impelled by the outward air, and 
attraded by the rarefied air of the ftove, rufhes 
through the flit, afcends into the tube, fpreads through 
the ftove by the vent holes, heats the bricks, and 
from them the whole room. The fmoke, which- 
has a free paflage, is carried off by the funnels. 
2. Admitting this defcription, which explains the 
model ; let us next confider what is requifite for th« 
conftrudion of a good Kang. The furnace may 
be placed either in the room itfelf, or in the next 
room, or without doors. The poor, who are glad 
to make the moft of the firing that warms the 
Kiio-Kang, on which they fit by day, and fleep by 
night, place the furnace in the fame room j the 
middling fort put it in an adjoining room ; the rich 
and great have it on the outfide, and moft com- 
monly behind the north wall. The furnace muff 
be much below the level of the flove, that the 
heat and flame niay afcend with the greater im- 
petuofity into the condudor, and not drive up the 
aflies. The furnace is in the form of a cone, fome- 
what arched, that the adivity of the heat and flame 
may be all impelled into the ffove, and not fly olf 
when the aperture at the top is left open. Note,, 
that the two little moveable flips are planks, that 
take up occafionally, when people want to go down 
into the cellar and empty out the aflies. The 
opening in the furnace is narrow, • and the lower 
end of the condudor mufl: go quick up into the 
lloves 
