POLMAISE SYSTEM OF HEATING. 
87 
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The caloric imparted to the atmosphere of the house is obtained 
from the radiation of an iron stove, situated at the back of the 
house, and opposite to which is a hole in the wall for the admis¬ 
sion of the heated air, which in its passage is met by and distri¬ 
buted through a woollen cloth, requiring to be kept wet, in order 
to deprive the air of some portion of its aridifying qualities: 
now the statement, that this instantaneous contact between the 
