486 



INDEX TO VOLUME I. 



INCREASED TEMPERATURE. 



Increased temperature at boshes of 

 blast furnace, negative effect of, 

 267. 



Indian Wootz made by steel fusion 

 process, 215. 



Ingots of steel, non-homogeneity of, 

 339. 



Intelligence required in using and 

 working steel, 314. 



Iodine used in silver extraction, 330. 



Ireland, J., iron sponge, recent im- 

 provements in manufacture of by 

 Blair process, discussion of paper 

 by, 365-366. 



Iron, in blast furnace, heat necessary 

 to melt, 261 ; slow oxidation of, 

 in dry atmosphere, 277. 



Iron ores, temperature of reduction 

 in blast furnace, high for peroxide, 

 magnetic and dense, 277 ; low for 

 hydrated and spathose, 277 ; not 

 high enough for Ilmenite and Mar- 

 bella, 278. 



Iron oxide, required in puddling, 

 calculation of, 243. 



KENNEDY, A. W. B., mild steel, dis- 

 cussion of paper on, 402-408. 



LANDORE open hearth steel process. 



388 ; bath, final adjustment of, in. 



389 ; charging pig metal and scrap 

 in, 390 ; ferro-manganese used in, 

 391 ; furnace bed, Le Chatelier's 

 mixture for, 231 ; limestone added 

 to, 389 ; ore. advantages of, in, 

 391 ; oxidation with ebullition of 

 gas in, 389 ; preliminary opera- 

 tions in, 389 ; sampling bath in, 

 389 ; scrap, use in, advantages of, 

 391 ; slag from, 390 ; modification 

 of, for special quality of steel, 391; 

 stirring bath and tapping, 390 ; 

 temperature requisite for, 389 ; 

 time occupied in, 390 ; yield by, 

 390. 



MANGANESE. 



Larkin, H., steel direct from ore, 

 manufacture of, discussion of 

 paper by, 328-329. 



Le Chatelier's proposal to use bauxite. 

 217. 



Lefroy, Sir H., remarks by, regard- 

 ing Siemens, C.W.. 378. 



Lester, J., Danks's rotary puddling 

 machine, discussion of paper by, 

 280-283. 



Lime for furnace linings, 304 ; and 

 magnesia linings, Siemens, C. W.'s, 

 experiments on, 305 ; used in ore- 

 reducing process, 304. 



Lime lining, dephosphorization by, 

 363 ; used in ore-reducing pro- 

 cess, 304. 



Limestone added to open hearth 

 steel process, 411 



Limit of elasticity in metals, 269, 

 270, 271, 423,424,459. 



Lining, basic,usecl in open-hearth steel 

 process, 412 ; of calcined bauxite, 

 and plumbago powder, 296. 



Livadia's steel plates, 444 ; burnt, 

 445 ; carbon varying in, 445 ; 

 chemical nature of, 445 ; irregular 

 composition of, 444. 445 ; silicon 

 in, 445. 



Longridge, J., views on ordnance cri- 

 ticised, 399. 



MACHINERY for steel-making, 437 ; 

 compound engine for, 438 ; econo- 

 my in steam engine for, necessity 

 of, 438 ; hydraulic arrangements 

 in, 439 ; quick-working reversing 

 engine best for, 439. 



Magnesia lining, difficulty of repair- 

 ing, 413, 414. 



Maitland, Col., British Ordnance, 

 metallurgy and manufacture of, 

 discussion of paper by, 452-458. 



Manganese, action of, non-chemical, 

 288 ; in blast furnace removes 

 sulphur from ore and fuel, 288 ; 



