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Scientific American, Vol. 29, No. 7 (August 1873) (1873)

leaf 4

An illustration from Scientific American, Vol. 29, No. 7 (August 1873), 1873, leaf 4
ng principle of course being the same in all, the wooden tubs or vesdfls in which the sewage has to be well, but the pattern, so long and so deservedly celebrated, namely, the means of controlling the action of the rakes, removed from the different houses; and, the tubs being now looks very antique… … the negatives, which he thinks is titors, of which seven were sim- badly done by the Americans, andis ple mowers, and nine combined AIR PUMP FOR RAISING SEWAGE. machines. Of the whole number seen in nearly all of their exhibited pictures. The prints of the magnificent series of the Yel- there…

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