— pipes, strength of, xii, 189; xiv, 369.
—, — used as an aqueduct, hydrogen in, N. Walkly, xxxiv, 393.
—, —, Ewbank's tinned, notice of, xxvi, 210.
—, —, protected by tin, safety of, xxvi, 400.
—, and tin, combustion of the alloy of, xxi, 375.
—, pots, manufacture of, by Messrs. Dixon, xxi, 196.
Leafing of plants, xliv, 419.
Leather, fabrication of Russian, iv, 193.
Leavenworth, M. C., four new plants from Alabama, vii, 61.
—, list of the rarer plants of Alabama, ix, 74.