. The railway library . and a half inches broad, is spiked down to treenails of oak, or locustwood, driven into jumper-holes bored in the stone curb. The construction shown in Figs. 16 and 17, which are a crosssection and side view of one of the tracks, is in very general use inAmerica. I met with it on the Philadelphia and Norristown, theNew York and Harlem, and the Buffalo and Niagara railroads;and I believe it has been introduced on many others. It consists of two lines of longitudinal wooden runners, marked a, measuring onefoot in breadth, and from three to four inches in thicknes
. The railway library . and a half inches broad, is spiked down to treenails of oak, or locustwood, driven into jumper-holes bored in the stone curb. The construction shown in Figs. 16 and 17, which are a crosssection and side view of one of the tracks, is in very general use inAmerica. I met with it on the Philadelphia and Norristown, theNew York and Harlem, and the Buffalo and Niagara railroads;and I believe it has been introduced on many others. It consists of two lines of longitudinal wooden runners, marked a, measuring onefoot in breadth, and from three to four inches in thickness, beddedon broken stone or gravel. On these runners, transverse sleepers, h,are placed, formed of round timber with bark left on, measuringabout six inches in diameter, and squared at the ends, to give thema proper rest. Longitudinal sleepers, c, for supporting the rails,are notched into the transverse sleepers, as shown in the 18 is an enlarged view of the plate-rail and longitudinal sleeperused for railways of this construction. The rail is made of wrought-iron, and varies in weight from 10 to 15 pounds per lineal is fixed down to the sleepers at every fifteen or eighteen inches, byspikes four or five inches in length, the heads of which are counter-sunk in the rail. Figs. 19 and 20 are the rails used on the Camden and AmboyRailway, which is sixty-one miles in length. They are paralleledge-rails, and are spiked to transverse sleepers of woorailwaylibrary07thom
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