โ Scribed by C.
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Warming and Ventilation, etc. 77
Warming and Ventilation.--Flavitsky uses double windows, placing an air-chamber under each window, into which the fresh outside air is admitted, and heated by .ribbed tubes, by means of water or steam. The hot air rises between the windows, and enters the room near the ceiling. --Ann, du genie civil, July, 1876 ; Zeits. des Arch. u. Ing.-Vet. zu Hannover, xxiii, 298. C.
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