—, sulphurets, new method of precipitating, xlvii, 193.
Metallic casting, vii, 190.
— decompositions by phosphuretted hydrogen, xviii, 403.
— salts, C. Matteucci on the decomposition of, xx, 187.
— vegetation, ii, 349.
— wires and springs, on tempering, xx, 393.
Metalliferous veins, course of, and origin, R. W. Fox, xxxi, 373.
— —, electro-magnetic properties of, xx, 136.
Metamorphic changes at the Lipari Islands, xxxiii, 77.
— agency, as indicated by certain crystals in some rocks in N. York, &c., L. C. Beck, xlv, 143; xlvi, 333.