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Scientific American, Vol. 59, No. 19 (1888) (1888)
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sing the sewer by this channel will be purified, the gases enter- The first public pleasure boat to be driven by elec- dabber, the motion of the dabber is so easy and posi- ing this flue returning into the cylindrical curb above trical power on the river Thames was recently launched. tive that it… … - UNWIN'S DABBING MOTION FOR NOBLE COMBS. females. ‘ MORGAN'S VENTILATING MAN HOLES FOR SEWERS, © 1888 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
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