plugs, or similar contrivancee, at the bare 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 side props, ing tank. Applied to ordinary condensers, the refrigerator balance… … lars or vertical props, according to 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 induced in the vacuum; cerning the…
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