rms a general depres- sion on the summit of the ridge, and Nature has waters across the intervening distance in a solid rock, and, as excavated rock occupies about double the masonry viaduct. The Croton aqueduct, or, as it is helped to lessen the labor of digging out and embank- space that it does… … Fig. 2.-SECTI0N THBOTTGH DOUBLE CONDUIT ABOVE MAIN GATE HOUSE. Fig. 3.-SECTI0N THBOUOH DOUBLE CONDUIT BELOW MAIN GATE HOUSE. feature to travelers over the old Albany post road (bet- material. The excavation is being done with powerful be 361^ feet and its area nearly 175 acres, by surround- ter…
Adapted · Reservoir · Patents · Bicycle · Scientific American · Water · Double conduit · Building edition · Expansion cylinder · High water · Water Supply · Gate house · Main gate · Transfer piston · Water tube
Internet Archive · Public domain (published before 1931). Free to use for anything.
