ON THE INFLUENCE OF SILICON ON THE PROPERTIES OF STEEL. 

 ( mffry of Results. 



45 



i t 0'' elasti- 



'' \'i- ■ -q. in. 



Ions 

 ■' 12-77 



13-25 

 13-39 



101 12-77 

 16-30 



Breaking load 

 per sq. in 



Pounds 



48,850 



Tons 

 21-80 



Ratio 

 of limit 



to 

 break 



48,810 21-79 

 46,410 20-72 



42,940 

 49,040 



30 19-19 48,410 21-61 



30 15-11 



70 16-28 

 180 15-22 



17-63 



301 17-92 

 JO 15-53 



130 17-73 



18-27 



JO 18-58 

 10 18-17 



19-17 



21-89 



51,920 23-18 



51,430 22-96 

 22-60 



50,640 



53,670 



54,280 

 52,050 



61,490 



23-97 



24-23 

 23-24 



27-45 



64,180 28-65 



57,720 25-77 



57,330 



25-59 



0-586 



0-608 

 0-646 



0-666 

 0-744 



0-888 



0-652 



0-709 

 0-673 



0-735 



0-739 

 0-668 



0-646 



0-638 



0-721 

 0-710 



24-7 



30-7 

 19-5 



15-7 

 24-2 



27-8 



15-6 



17-1 

 15-4 



21-1 



240 

 24-5 



12-8 

 18-4 



22-0 



17-7 



•iS s a 



76-3 



77-8 

 43-4 



37-3 

 63-7 



71-1 

 30-0 



II 



Remarks 



18 



16 



15 



17 



Silky. 



Very finely silky. 



Fracture irregular ; about 60 per cent. 



silky ; the remainder in patches and 



pipes of crystal. 



Verj- unsound and faulty ; irregu- 

 lar crystalline spots ; surface ex- 

 tremely distressed all over. 



Fracture silky, but full of pipes and 

 reedy holes in part filled -with crys- 

 talline siliceous matter; some small 

 specks of crystal. 



Very finely silky, but with three large 

 and about 20 small round pipes, 

 filled with siliceous matter, which 

 flew out in a cloud of dust on frac- 

 ture ; surface reedj'. 



Fracture irregular, with unsound 

 pipes or fissures; mostly crystalline 

 granular ; edges silky. 



Like No. 6, but more irregular, and 

 surface a good deal distressed. 



Fracture irregular and not entirely 

 sound ; about 30 per cent, finely 

 crystalline, rest silky. 



Irregular ; mostly silky, but with 

 crystalline spots ; in places unsound 

 and reedy ; surface reedy. 



Silky, but with irregular crystalline 

 specks and pipes. 



Silky but irregular, with crystalline 

 spots and pipes; surface a little 

 distressed. 



Fracture 65 per cent, finely crystal- 

 line, the rest half finely gi-anular ; 

 half silky ; surface very much dis- 

 tressed on one side. 



Fracture about 65 per cent, finely 

 crystalline, the rest irregular, for 

 tlie most part silky; surface a good 

 deal distressed. 



Silk}' ; specked with crystals and 

 silica (yellowish crj'stalline mate- 

 rial), a little reedy on surface. 



Somewhat irregular, silky — with flat- 

 tened pipes containing crystalline 

 siliceous matter; surface a little 

 distressed. 



