Issue 26 and Volume 1891 10.

SEWERAGE. Four gangs of workmen have commenced the extension of what is known as the Wissahickon high-level sewer, located on top of the cliffs overlooking the Wissahickon creek, southeast of Roxborough, which is part of Philadelphia. The sewer was originally undertaken about four years ago and several hundred feet of it completed at enormous cost. It is intended to drain that section of the Twenty-second ward included in the territory about Wissahickon Inn and the Deaf and Dumb Asylum, more than two miles distant. Some idea of the work can be gleaned from the fact that a tunnel 300 feet long must be driven through almost solid rock in order to secure a trench four feet nine inches clear. The contract is divided into four sections. The upper section is to be 300 feet long, and will cross Cresheim creek on a bridge of stone with a single span 116…

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