"Subsulphide of lead"
before 1889
Crystallised ore-furnace slag
before 1889
Deposit coating the bricks inside the stack of the ore-furnace, Mines Royal Works
before 1889
Ore slag from first fusion
before 1889
Gornal sandstone altered by heat. From the hearth of the blast furnace
before 1889
Dinas clay from the ore-furnace at the Mines Royal Works
before 1889
Native graphite from the Horicon Mines, U.S.A.
before 1889
Result of heating one equivalent of sulphate of lead with one of sulphide of lead
before 1889
Metal slag
before 1889
Brick from a copper refinery furnace bottom, Morfa Copper Works
before 1889
Result of heating one equivalent of sulphate of lead with one of carbon
before 1889
Native graphite from the Horicon Mines, U.S.A.
before 1889
Coal from the Province of St. Catherine's, Brazil
before 1889
Copper sheathing from H.M.S. "Netley"
before 1889
Sample of purified graphite from Horicon Mines, U.S.A.
before 1889
Crystallised metal slag from the Haford Works
before 1889
Coal from the Imperial Brazilian Collieries Company mines
before 1889
Result of heating one equivalent of suphide of lead with one of protoxide of lead
before 1889
Copper sheathing from H.M.S. "Favorite"
before 1889
Result of heating together galena and phosphate of lead
before 1889
Result of heating sulphide of lead with haematite and carbon
before 1889
Result of heating three equivalents of sulphate of lead with one of sulphide of lead
before 1889
Coal from San Jeronymo
before 1889
Sulphate of lead produced by fusing together one equivalent of lead sulphate with one of litharge
before 1889
Coal from the Raniganj Coalfield, Damuda Valley, Bengal
before 1889
Result of heating together one equivalent of sulphide of lead with two of tin
before 1889
Result of heating together one equivalent of sulphide of lead with one of copper
before 1889
Coal from South of Chile
before 1889
Copper sheathing from H.M.S. "Acteon"
before 1889
Coarse galena from Portugal
before 1889
Copper sheathing from H.M.S. "Indefatigable"
before 1889
Copper sheathing from H.M.S. "Portland"
before 1889
Alloy of 45 copper and 55 antimony
before 1889
Fine-grained galena from Cornwall
before 1889
Copper sheathing from H.M.S. "Argonaut"
before 1889
Copper sheathing from H.M.S. "Naiad"
before 1889
Copper sheathing from H.M.S. "Aurora"
before 1889
Alloy of 76 parts of copper and 24 of tin
before 1889
Alloy of 2 copper to 1 tin, making "speculum" metal
before 1889
Copper sheathing from H.M.S. "Duke"
before 1889
Coal from the Bolan Pass, Baluchistan, (now part of Pakistan)
before 1889
Alloy of 90 copper and 10 antimony
before 1889
Coal from Lao Tsa Gulley, China
before 1889
Argentiferous black copper, an accidental product
before 1889
Metallic copper in Kupferstein from Halsbrucke
before 1889
Alloy of 80 copper and 20 antimony
before 1889
Coarse galena from the New Red Sandstone, Garendon, Charnwood Forest
before 1889
Two varieties of Pung Chung coal, China
before 1889
Copper sheathing from H.M.S. "Melampus"
before 1889
Sheet copper, Grunthal Hutte
before 1889