496 



INDEX TO VOLUME I. 



WELSH DINAS SILICA BEICK. 



Welsh Dinas silica brick, analysis of, 

 226. 



"West, J., shipbuilding, steel for, dis- 

 cussion of paper by, 426-428. 



Wheels, action of, on rails, 272. 



Whitworth, Sir J., fluid compressed 

 steel and guns, discussion of paper 

 by, 320-323. 



Whitworth, Sir J., 321 ; definition of 

 steel, 517 ; rifling, mechanical 

 gunnery, gun material considered 

 by, 321 ; process for compression 

 of steel, 321. 



Williams, K. P., permanent way of 

 railways, discussion of paper by, 

 338-340. 



Williamson, Prof., regarding de- 

 phosphorization, 363. 



YIELD FROM PUDDLING FURNACE. 

 Woolwich system of ordnance. 398. 

 Work done and heat developed in 



blast furnace, 273. 

 Wrought iron contains only 96 or 97 



per cent, of metallic iron, 398 ; 



what it is, 403. 

 Wrought iron and steel, table of 



carbon and silicon in, 253. 

 Wrought steel from Creusot, 380. 



YATES'S trials with spongy metal, 



292. 

 Yield from blast furnace increased 



by copper, 331. 

 Yield from puddling furnace, actual, 



241,282 ; difference between actual 



and theoretical, 242. 



END OF VOLUME I. 



BHADBURY, AUM5W, & CO , PRINTERS, WHITEFR1ARS 



