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Scientific American, Vol. 81, No. 6 (1899) (1899)
leaf 4
difference of temperature of the two going air is drawn from the upper left hand corner of of heat brought in and carried out by this ventilating walls is made as smallas possible by warming or cool- the rear end of the chamber and then downward and current are the same. Arrangements are provided… … out. The volume of sampling the ventilat- © 1899 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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