Pig Iron undergoes during its conversion into Wrought Iron. 175 
into wire iron. The proportions of carbon, silicium, sulphur 
and phosphorus, were as follows :— 
First analysis. | Second analysis. Mean. 
Carbon . . 0:100 0°122 0-111 
Silicium . . 0:095 0-082 0-088 
Sulphur . . 0-093 0-096 0-094 
Phosphorus . 0:117 RES 0-117 
To complete the series of products in the conversion of pig 
iron into wrought iron, we analysed the scoria or slag which 
remained in the furnace after the balls had been taken out, and 
found its composition to be as follows :— 
Sed re te terre Ne Se ROS 
Protoxide of iron . . . 66:23 
Sulphuret of iron. . . 6:80 
Phosphoric acid . . . 8:80 
Protoxide of manganese . 4-90 
selon OL SR EAR tee, 
Rane 9. RS PL AS eo 
100:00 
Therefore in the scoria are found the silicium, phosphorus, sul- 
phur and manganese which existed in the pig iron; and pro- 
bably the phosphorus and silicium are removed from the iron 
by their forming fusible compounds with its oxide. 
We shall conclude this paper by giving our results in a tabu- 
lated form, so that the removal of the carbon and silicium may 
be better appreciated by those who may consult it with the view 
of obtaining such information as may lead them to those im- 
provements to which we think our investigations tend. 
Pig iron used. Time. Carbon. Silicium. 
2:275 2-720 
Sample No. 1 12°40 2°726 0-915 
is oat 1-0 2-905 0-197 
nO Wot 2 15 2-444 0-194 
ae 1G, vei 1-20 2305 0-182 
a5 ornne 1:35 1-647 0183 
= ” 6 1-40 1-206 0163 
-E 9 7 1-45 0-963 0:163 
i hh 1:50 0:772 0168 
Puddled bar, 9 | ......4. 0:296 0-120 
Muarearony. - VLO) |i iececss ars 0-111 0.088 
Finally, we wish to express to Mr. Siméon Stoikowitsch our 
best thanks for the ability and perseverance which he has shown 
in helping us in these long and tedious analyses. 
