METALS. 



METCALF, THERON. 



489; tungsten steel by Bessemer's process, 

 489 ; test of steel-headed rails, 490. 



VIII. Khodium, 464; vanadium, 464 ; mo- 

 lybdenum and chromium, 465 ; niobium and 

 tantalum, 466 ; aluminium bronze, 466 ; mag- 

 nesium, 466 ; effect of cold on metals, 466 ; 

 science of alloys, 467 ; new mode of toughen- 

 ing and refining gold, 467" ; desilvering lead by 

 zinc, 467 ; reduction of oxide of copper by su- 

 gar, 467 ; refining copper, 468 ; tinning cop- 

 per vessels, 468 ; crystallized tin-foil, 468 ; the 

 Heaton steel process, 468, 469 ; the Siemens- 

 Martin steel process, 470; other new steel 

 processes, 470 ; Bessemer process and spec- 

 trum analysis, 470 ; the Ellerhausen wrought- 

 iron process, 471 ; coating iron with copper, 

 472 ; purification of iron, 472 ; decarbonizing 

 cast-iron, 473 ; alloy of tungsten and iron, 473. 



IX. Making lead pipes with a tin lining, 

 418; reducing aluminium from its ores, 418; 

 platinizing copper, 419 ; preventing silver 

 waste, 419; tinning brass and copper vessels, 

 419 ; plating steel, etc., with nickel, 419 ; al- 

 loys of copper and tin, 419 ; alloy of iron and 

 sine, 420 ; fusibility and volatility of metals, 

 420; bronze manufacture, 420; Whitworth 

 metal, 421 ; casting steel under pressure by 

 use of gunpowder, 421 ; the Ellerhausen pro- 

 cess, 421 ; the Siemens-Martin process, 422 ; 

 Berard's process, 422 ; Ponsard & Boyneval's 

 process, 422 ; the Heaton process, 423 ; 

 Krupp's Bessemer rails, 424 ; tungsten Besse- 

 mer steel, 424 ; durability of steel rails, 424 ; 

 tests of steel and iron car-wheels, 424 ; chro- 

 mium and titanium in pig-iron, 425 ; malleable 

 cast-iron, 425; special method of blooming, 

 426 ; smelting, carburizing, and purifying iron, 

 426 ; iron analysis, 426 ; how to determine 

 the carbon chemically combined with iron, 

 427 ; chemical nature of cast-iron, 427. 



X. The Henderson steel process, 481 ; the 

 Sherman process, 481 ; Brady's process, 482 ; 

 Wheeler's process, 482 ; dephosphorization of 

 iron, 482 ; treatment of iron with alkaline 

 metals, 482 ; Russian charcoal-iron, 483 ; 

 Bessemer metal, 483 ; malleable cast-iron, 

 483 ; iron and steel crystals, 483 ; melting 

 steel easily, 484 ; bronze guns, 484 ; white 

 brass, 484 ; copper in birds' plumage, 484 ; 

 selenium in commercial copper, 485 ; desilver- 

 ing lead, 485 ; a cold-tinning process, 485 ; tin 

 in California, 485 ; alloys with manganese, 

 485 ; alloy of lead with platinum, 486 ; alu- 



minium weights, 486 ; metallic zirconium, 486 ; 

 silver and the chlorine-treatment, 486 ; reduc- 

 ing silver with zinc, 487 ; Claudet's silver pro- 

 cess, 487 ; economical gold-working, 487. 



XI. Copper-manufacture, 497; improved 

 process of extracting gold and silver, 497, 498 ; 

 zinc sheathing, 498 ; new method of making 

 ferro-manganese, 498 ; Sherman's process, 498 ; 

 Berard's process, 498, 499 ; chrome steel, 499 ; 

 the corrosion of iron, 499, 500 ; phosphorus in 

 iron and steel, 500 ; action of fluospar on cast- 

 iron, 500 ; Russian sheet-iron, 500, 501 ; iron 

 paper, 501 ; effects of cold on iron, 501 ; ac- 

 tion of water on iron, 501, 502 ; preservation 

 of sheet-iron vessels, 502. 



XII. Gold in sea-water, 510 ; assay of py- 

 rites for gold, 510 ; fusion of metallic arsenic, 

 611 ; filiform silver, 511 ; the copper process 

 at Agordo, 511 ; the presence of copper in 

 plants, 511 ; indium, 512 ; treatment of tinned 

 scraps, 512; preparation of tellurium, 513; 

 metallic printing on cloth, 513 ; phosphor- 

 bronze, 513 ; smelting of manganese-ores, 513 ; 

 the manufacture of malleable iron, 514 ; pure 

 wrought-iron, 514 ; new smelting and pud- 

 dling furnaces, 515 ; rotary puddling, 515 ; 

 Dormoy's mechanical puddler, 515 ; the War- 

 ner process, 516; the Hazeltine process, 516; 

 new metallic alloy, 516. 



XIV. Mechanical puddling, 527 ; effects of 

 cold on iron and steel, 528 ; silicon in pig-iron, 

 528; extraction of iron from pyrites refuse, 

 529 ; strength of iron increased by strain, 529 ; 

 restoration of burned steel, 529 ; preservation 

 of iron, 530 ; spongy iron as a water-purifier, 

 530 ; unpressed tin-dressing machinery, 531 ; 

 nickel and cobalt ores, 531 ; precipitation of 

 copper with tin-scrap, 531 ; new method of 

 welding copper, 532 ; purification of lead by 

 steam, 532 ; assay of lead, 533 ; quicksilver, 

 633 ; origin of gold nuggets, 533 ; gold assays, 

 534 ; alloys, 534 ; ornamentation of metals, 

 335. 



XV. Gallium, 484 ; separation and purifi- 

 cation of metals, 485 ; spectra of metallic 

 solutions, 485 ; bronzes incrustes, 485 ; purifi- 

 cation of quicksilver, 486 ; a new steel, 486 ; 

 new method of treating mixed copper, silver, 

 and gold ores, 486. 



METCALF, Bey. H. KENDRICK. XII. Obit- 

 uary, 632. 



METCALF, THERON, an American jurist. XI. 

 Biographical sketch of, 487. 



