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Scientific American, Vol. 87, No. 7 (1902) (1902)
leaf 10
simply adding the usual cently sold the right to manufacture this disk to the other to the ceiling. The chains are provided at regu- steam and water gages, the pressure gage and a Clinton Separator and Engine Company for the sum lar intervals with eyes which are adapted to engage circulation pipe… … che roof of the ear, as shown decay. SYSTEM FOR VENTILATING TUNNELS. © 1902 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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