and Observations on Wootz. 329 
Stodart, was like that of cast steel of the best quality ; con- 
sequently it was uniform and rather close. Its specific gravity, 
as already stated, was about 7,200. 
500 grains of steel wire melted under the circumstances 
just mentioned. The mass which had been fused was fractured 
in the same manner, and had the same kind of grain, as wootz 
which had been melted. 
I did not always succeed in melting wootz and steel, al- 
though the fire denoted by the pyrometer was of the same, or 
a higher temperature than that in which at other times they 
were melted. Nor is this result difficult to account for by 
those who consider the different temperatures in different parts 
of the same fire ; even supposing the instrument to invariably 
indicate the real temperature. 
(/) Equal weights, namely, 500 grains of wootz, steel wire, 
and gray pig iron, were exposed, for half an hour, in the same 
crucible well covered, to a pretty considerable fire. On cool- 
ing, the pig iron was found to have been fused, but the other 
two states of iron had retained their form. The pyrometer 
was contracted to near the 140th degree. 
(k) I melted together 500 grains of steel wire and 50 grains 
of gray pig iron, in a close vessel, without any addition of 
carbon. The steel so alloyed was more brittle than cast steel. 
Its grain was coarser, and it had not the uniformity of tex- 
ture and colour of melted wootz ( § 3. h ) ; but had more 
resemblance to some of the fractures of the unmelted wootz 
(§ 3 - 4). 
§ 4. Effects of Fire and Oxygen Gaz conjointly. 
A piece of wootz ignited to whiteness, being exposed to a 
