. Railway age . The Hucson & Manhattan Tunnels. 248 THE RAILROAD GAZETTE. Vol. XLIV., No. 8. atlng the tracks by curtain walls In tbo aectlorui where they donot run In tubes is to seture natural ventilation due to the move-ment of trains. A system of power ventilation has also been In-stalled. The Interior diameter of the tubes Is 15 ft. 3 In. Under theriver the rails are from 00 ft to 90 ft. below the surface of thewater. The depth of earth and rock between the roof of the tunneland the water ranges from 15 rt. to 40 ft., the deepest part of theriver being on the New York side. The two tubes


. Railway age . The Hucson & Manhattan Tunnels. 248 THE RAILROAD GAZETTE. Vol. XLIV., No. 8. atlng the tracks by curtain walls In tbo aectlorui where they donot run In tubes is to seture natural ventilation due to the move-ment of trains. A system of power ventilation has also been In-stalled. The Interior diameter of the tubes Is 15 ft. 3 In. Under theriver the rails are from 00 ft to 90 ft. below the surface of thewater. The depth of earth and rock between the roof of the tunneland the water ranges from 15 rt. to 40 ft., the deepest part of theriver being on the New York side. The two tubes are about 30 ^or the greater i)art of the distance under the river. The down town New York terminal Ih to be under the HudsonTerminal buildings at Church ami Cortlandt slreetH. These struc-tures occupy the larger i>art of two city blocks and are Ti storieshigh. They will accommodate 10,000 otilce tenants and will be openedon May 1. They contain more than 25 acres of floor space. Onebuilding is on


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Keywords: ., bookcentury1800, bookdecade1870, bookidrailwayage44, bookyear1870