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great satisfaction. He closed his common fire-place by a 
wall built across it. Near this wall, ancl in front of it, lie 
placed a small close stove, of a peculiar construction, and 
surrounded it with a white marble case, having an opening 
in the upper part of the front. The external cold air was 
admitted through a perforation in the hearth under the 
stove, passed up around it, within the marble casement, and 
issued warm into the room from the opening in front made 
for that purpose. The white marble, while it added to the 
beauty of the structure, protected the stove from the dust, 
which in other cases, by burning on the heated iron, gives 
a disagreeable smell to the air. He then made his doors 
and windows tight, and the effect was, that with a very small 
quantity of fuel, in the midst of winter when the thermom¬ 
eter stood at 10° or 15° below 0, he enjoyed, in his room, 
a fine fresh summer atmosphere. 
But as close stoves are not so lively and pleasant as open 
fire-places, I undertook to apply this principle to a common 
Franklin stove ; and accordingly procured a small one cast 
with a flue projecting horizontally about four inches beyond 
the back. After closing my common fire-place by a straight 
wall, I placed this stove about two inches in front of it, and 
elevated about the same distance from the hearth. The flue 
entered of course about two inches into the wall. The open¬ 
ing around the edge of the hearth-plate was then shut, so as 
to inclose the vacuity underneath, and the same was done 
as to the space behind the back of the stove. The external 
air was admitted through a hole previously made in the floor 
under the front semicircular part of the hearth plate. The 
current entering there spreads under the whole of the bot¬ 
tom, and behind the back, and issues into the room through 
openings for that purpose at the side of the stove. This air 
brings with it all the heat from the plates, which otherwise 
would be conducted away, and no cold air from without re¬ 
quires to be admitted. The room in which I have this small 
fire-place is large, with the doors of two smaller rooms 
