|iron, 13; sulphur, 29 | 4.4 | 2.546 | 275.00 Lead, pure | | 11.4 | 6.597 | 712.50 Galena |Sulphur, 13; lead, 87 | 7.5 | 4.340 | 468.75 Carb. of lead |Carbonic acid, 16; oxide of | | | |lead, 84 | 6.4 | 3.715 | 400.00 Zinc | | 7.0 | 4.051 | 437.50 Red oxide |Zinc, 80; oxygen, 19; oxide | | | of zinc | of manganese | 5.4 | 3.125 | 337.50 Antimony | | 6.8 | 3.935 | 425.00 Gray oxide |Sulphur, 29; antimony, 71 | 4.5 | 2.025 | 281.25 of antimony | | | | Nickel | | 8.4 | 4.861 | 525.00 Arsenical nickel|Arsenic, 56; nickel, 44 | 7.5 | 4.340 | 468.75 Sulphuret |Nickel, sulphur, arsenic | 6.2 | 3.588 | 387.50 Cobalt pyrites |Cobalt, 58; sulphur | 5.0 | 2.893 | 312.50 Iron, cast | | 7.2 | 4.166 | 450.00 Iron, wrought | | 7.78| 4.496 | 486.25 Iron pyrites |Sulphur, 53; iron, 47 | 4.9 | 2.835 | 306.25 Magnetic iron |Oxygen, 28; iron, 72 | 5.1 | 2.951 | 318.75 Arsenical iron |Arsenic, 46; sulphur, 20; | | | |iron, 34 | 5.7 | 3.298 | 356.25 Specular iron |Oxygen, 30; iron, 70 | 4.9 | 2.835 | 306.25 Hematite |Oxide of iron, 86; water, 14| 4.0 | 2.314 | 250.00 Uranium, or |Oxygen, 15; uranium, 85 | 7.0 | 4.051 | 437.50 pitch-blende | | | | Baryta or | | 4.0 | 2.314 | 250.00 heavy spar | | | | Lime rock | | 3.0 | 1.736 | 187.50 Calc spar | | 2.7 | 1.562 | 168.75 Fluor spar | | 3.15| 1.822 | 196.87 Quartz | | 2.69| 1.673 | 167.452 Granite | | 2.78| 1.608 | 173.75 ----------------+----------------------------+------+----------+----------- Note.--A vein of ore one inch thick, six feet long, and six feet high, will measure three cubic feet; two inches, six cubic feet, and so on in proportion, allowing three cubic feet for every inch of ore in the lode, six feet high and six feet long. Excellent Advice to the Emigrant Traveler Is given by the California Immigrant Union, No. 248 Montgomery Street, San Francisco, which, if heeded, will be of service: