Railroads in Austria, xx, 174.
— in the United States, extent of, J. Henry, xxxiii, 296.
—, Hudson and Mohawk, account of, S. D. Bloodgood, xxi, 141.
—, graduation of Mohawk and Hudson, xxi, 385.f
—, Baltimore, method of clearing the snow from, xx, 166.f
— curves, T. Gorton, xxvii, 131.f
—, elevation of, required for rails, over roads of a certain curvature, J. Thomson, xxii, 346.f
—, inclined planes in the construction of, J. Thomson, xxiii, 107.
—, turnouts in, with flexible moveable rails, T. Gorton, xxviii, 248.
— cars, rapidity consistent with safety, xxxv, 197.