504 CATALOGUE OF EXHIBITS. 



29. 1 Chilled Cast-iron. 



29.2 Coarse Structure in Sheet steel. 



29.3 Influence of Temperature on the Hardening Power of 



Steel. 



5. New Special or Alloy Steels. 



30. 25/0 Nickel Steel. 



31. Manganese Steel quenched from 1050° C. in a freezing 



mixture. 



32. Manganese Steel quenched from 1050° C. in molten 



lead. 



33. Manganse Steel cooled slowly. 



34. Tungsten Steel. 



35. Heavy Chip cut from Steel Forging by Tungsten Steel 



Tool. 



36. Molybdenum Steel. 



37. Chrome Steel. 



38. Gruson Chilled Cast Iron Armor. 



39. Harvey Nickel Steel Armor. 



40. Oxide Colors for tempering steel. 



6. Non-Ferrous Metals. 



42. Metallic Nickel from Carbonyl. 



42.1 Nickel made by the Mond process. 



42.2 Nickel Electro deposited. 



43. Rosette Copper. 



44. Hiibnerite, Tungsten Ore, 68 to 72 per cent. WO3. 



45. Hiibnerite, Tungsten Ore concentrated first grade ^6,. 



to 70 per cent. WO3. 



46. Ferro-Tungsten, 37 per cent. W. ■ 



47. Metallic-Tungsten, 95 to 97 per cent, 



48. Ferro-Molybdenum 50 per cent. Mo. 



49. Metallic Molybdenum 95 to 99 per cent. 



50. Ferro-Boron, free from carbon, 25 per cent. B. 



51. Metallic Manganese, free from carbon. 



52. Ferro-Chromium 6^ per cent. 



