stop the flow of water, but those by the short exposure, the edges of the plate are var- Improved Apparatus for cleaning Water Pipes. piscine invaders are now removed without difficulty. nished to keep on the collodion film, the plate is The patent for this invention was granted on April The… … Rapids and Little Falls astrainer, C, ofsheet met- PIPES. for 352 miles, or nearly to APPARATUS FOR CLEANING WATER al, pierced with five aper- the Falls of Pokegoma, to which point a steamboat 7, 1863, to Thomas D. Bond, of Washington, D. C., tures, the sum of whose area will equal the diameter…
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