—, yield of Russian mines of, xxi, 372.
— mines of Nertchinsk, xvii, 34.
— — of the Hartz, xix, 113.
— — of Peru and Chili, xvii, 43.
— —, —, Pasco, S. America, sketch of, De Rivero, xvii, 43.f
— — —, Tarapaca, xliv, 8.
— — of Mexico and South America, xxiv, 213, 226.
— — of Davidson Co., North Carolina, xli, 183, 348.
—, sulphuret of, in New York, i, 237.
— ore, red, analysis of, v, 377.