ally different vided with two lamps, one white and the other green. AN lUPBOVEMENT IN FTTBNACE CONSTBUCTION. from the ordinary European The hot-air furnace which we illustrate herewith is clock; but the method of indi- so constructed that a large volume of heated air may cating the time is… … the time of day, two cylinders having suction and discharge connection AN IMFBOVEMENT IN FUBNACE CONSTBUCTION. A QUAINT OLD JAPANESE CLOCK. with the water-main. In order to render the water- the clock is re- main continuous, a by-pass is employed, which con- markable for its and that the draft may…
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