Scientific American Volume 77 Number 07 (August 1897) . (Continued on jnige 111) The Berkefeld House Filter. The onlyFUter Remin^ Tirpliold amd CholeraBaciUi, TMted and Indorsed by manyleading authorities In Europe and Am-erica. It gives a continuous flow of fil-tered water, absolutely free from Is easily cleaned, as all impurities re-main on tbe surface of tbe fllteringcylinder. Cylinders can be sterilized byboiling in water for one liour. Hend forcirculars and prices to tbe BerkefeldFilter Co., 4 Cedar St., New YorkSet im Sctmtiflc American, June 23,1894.

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