d plugs, or similar contrivances, at the base of the appa- chimney is placed on the top of the densation in the receiver, E, until the ratus at H, by means of a pump, to be restored to the feed- building, to which abut tide props, balance of temperature was restored. ing tank. Applied to ordinary… … lars or vertical props, according to Fig. 5.—VENTILATING APPARATUS. circumstances; and at night, the na- tural heat of the sun not being avail- in proportion to the rapidity with which advantages, which it is unnecessary to mention here, not con able, artificial heat is employed. the vapor is…
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