. The street railway review . from the Battery to the Harlem river. Whilein earnest themselves they were laughed at b\- the convince doubters they built, in 1870, the experi-mental line under Broadway from Warren to Murraystreet, one block in length. A car was put in, with thenecessary machinery, and everybody was carried free of. FIRST AiWERICAN UNDERGROUND ROAD. charge. Although an apparent success the road, forsome reason, was not extended. The tunnel is still in a good state of preservation,having been substantially built. It is eight feet in diam-eter, built of brick and circula
. The street railway review . from the Battery to the Harlem river. Whilein earnest themselves they were laughed at b\- the convince doubters they built, in 1870, the experi-mental line under Broadway from Warren to Murraystreet, one block in length. A car was put in, with thenecessary machinery, and everybody was carried free of. FIRST AiWERICAN UNDERGROUND ROAD. charge. Although an apparent success the road, forsome reason, was not extended. The tunnel is still in a good state of preservation,having been substantially built. It is eight feet in diam-eter, built of brick and circular in section, as shown inthe engraving. Under the sidewalk at Warren streetwas the station, a large, handsome and well lighted the other terminus in Citj Hall Park was the venti-lating shaft, of generous dimensions. The tunnel was21 feet 6 inches below the street surface, and interferedwith no sewers, gas pipes or water mains. The method of operation was simplicity itself. Thecar, which ran on a track, fitted the wall of the tunnel soclosely that very little air could escape by it at the lowpressure employed. Air at a pressure of 5 o 6 poundsto the square inch was admitted behind the car at theWarren street end, blowing it to the opposite end; whenthe air was exhausted, and the car sucked back, so tospeak. As the end of the
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
