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Scientific American, Vol. 77, No. 5 (1897) (1897)

leaf 4

An illustration from Scientific American, Vol. 77, No. 5 (1897), 1897, leaf 4
wrence filters : ‘‘Out of one hundred and two analy- 19 varieties of muskmelons, 17 kinds of watermelons, tions that the Metropolitan Traction Company has ses, fifty-eight indicated that the filtered water was and 15 varieties of onions. already commenced work on the important improve- absolutely… … Office. In the pre- teria grow through sent overburdened THE CURVE the bed after the condition of street manner of mildew railroad travel, and 355 square miles, or about six times the size of the Dis- through a bolt of linen. A properly constructed filter particularly of that on the Broadway line,…

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