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Scientific American, Vol. 42, No. 6 (1880) (1880)

leaf 7

An illustration from Scientific American, Vol. 42, No. 6 (1880), 1880, leaf 7
a tolerable circulation when the weather will admit of open- of the box, and pound and wash the clothes. This tubing may lead to the place to be ventilated, and ing the windows and doors to allow the heated foul air to An improved medicine spoon, invented by Mr. Barclay T. there blow the air… … nel, connected with the pipe, wheels and provide a suitable GREEN’S SYSTEM OF VENTILATION. C, an injecting nozzle, A arrangement for the gas to is placed, and connected escape, at the least cost, and by a pipe, D, with a pressure air pump in the base- shaped opening, and the three percent of…

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