\\-JLIJAM SIEMENS, F.R.S. 



293 



accomplish its fusion in a continuous manner, and on a large scale, 

 the fused ore might be acted upon by solid carbonaceous matter, 

 so as to separate the metallic iron in a more compact form, while 

 the earthy constituents of the ore would form a fusible slag with 

 the fluxing material. Experiments proved that this reduction by 

 precipitation of the iron could be accomplished only at an intense 

 heat, exceeding the welding heat of iron, but that the iron so pro- 

 duced was almost chemically pure, although the ores and the fuel 

 used might contain a very considerable percentage of sulphur and 

 phosphorus. The specimens of iron which I exhibit were made in 

 this manner from ores of various descriptions, and the following 

 tables give the analysis of the ores and the iron, as also the yield 

 of iron obtained from a ton of ore : 



RESULTS OP PRECIPITATION PROCESS AT LANDORE. 



RESULTS OF ROTATOR. 



