tal position. top, middle, or bottom layer, at will, of the new lake. This aqueduct starts from Croton Falls, and runs In Fig. 2isshown a verysimple wheel, to be operated Each inlet is circular and fourteen feet six inches in south and east, taking an almost direct line for the city. by gases. The… … as regards the portion ahove the Croton Dam, while Fig. 2.-GAS WHEEL. many miles of country between it and Quaker Bridge will also be converted into a lake. The scene of the edges so as to form hollow cones, as shown. The knit- the old aqueduct. The character of a tunnel in solid operations we…
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