—, hydrostat for supplying water to, I. Doolittle, xiii, 64.f
—, incrustations within, prevented by potatoes, vii, 193.
—, protection of, by timber, xix, 176.
—, strength of cylindrical, W. R. Johnson, xxiii, 68.
[Steam-engines,] large, x, 170.
—, spark extinguisher for, xlii, 209.f
—, in Great Britain, xv, 185.
—, the first at Glasgow, xii, 385.
—, economy of using highly elastic steam expansively, J. Perkins, xiii, 59.f
—, J. Perkins's method of applying his mode of generating steam to ordinary, vii, 332.f