Cast Steel . 
361 
Charcoal disappeared No. I. 
II. 
III. 
l 
l 
i 
Equal to - t — 
— 
— 
4— 
l c 
; 6 
Si 
1 
i 
1 
Gained by iron —— 
— 
Average 2 d part-. 
19 
22 
23 
211 - 
General loss in fusion 211 
133 
85 
Grains. 
Exp . IV. Swedish iron 
OP 
- 
1060 
Charcoal ~th, 
or 106 grains. 
From this mixture a very perfect fusion was obtain- 
ed, in which all the charcoal disappeared except a^ 
bout grain 2 composed of small granules possessing 
a rich deep black colour* The metallic button 
weighed 1093 
Gained by the combination of charcoal 33 
equal to ~-d part the weight of the iron employed. In ad- 
dition to the weight of the button, the sides and top of the 
crucible contained a considerable number of minute 
spheres of iron possessing prismatic colours. The sur- 
face of the present product was crystaiized in radii. The 
fracture was that of highly blown crude iron of a pale sil- 
very white colour, marked with an imperfect crystalliza- 
tion. The quantity of charcoal which disappeared in this 
operation was equal to-— th part the quantity of iron at first 
introduced. Grains. 
The aggregate weight was - - 1166 
Charcoal remaining™ grain, and iron obtained 1060 1060| 
Total loss in this fusion 105^ 
Exp . V. Swedish iron - 1000 
Charcoal -—th, or - - 66 
This fusion was found complete after half an hour’s expo- 
sure. The charcoal had totally disappeared. The me- 
tallic button was regularly crystallized, and weighed 1000 
grains^ being exactly the same weight introduced* Be* 
