—, improved method of constructing, xxxv, 318.
—, cast iron sleepers for, xxxv, 318.
—, resistance of air to trains of, xxxviii, 136.
—, atmospheric, xlix, 228.
— tunnel, in Pennsylvania, xxix, 73.
Railways, vibration of, Denham, xxx, 382.
Railway iron, remarks on, D. Mushet, xxxiv, 15.
[Rain,] amount of, at different heights in the atmosphere, xxix, 354.
—, —, in S. W. of Ireland, T. Knox, xlvi, 394.
—, —, in the Ghâts of Western India, xxxviii, 103.