350 
APPENDIX. 
separated from it for the purpose of being analyzed : it was found 
to contain : 
Scoria insoluble in acid - - 0,034 
Lime and alumine dissolved - 0,030 
0,064 
No traces of clirome, manganese, or phosphoric acid were perceived. 
The piece of iron bar was submitted to different experiments ; 
it was cut lengthwise, halfway, and then broken off ; it exhibited 
not a very coarse grain, but close and characteristic of iron of a 
very good quality ; it was forged, drawn out into a thin rod, bent 
and welded together ; it yielded to all these manipulations without 
exhibiting the least defect ; it was beaten and reduced to a very 
thin sheet, without cracking ; it was then put into the wire- 
drawer, which produced a very fine ductile and beautiful wire ; 
lastly, after a little bar had been tempered, we tried to curve it 
into a ring ; it readily took this form, but some cracks were ob- 
served at the top of the curve, and it was ascertained that this 
cracked part was harder than the rest : the same inequality of 
hardness was observed by means of a file on other tempered bars : 
and this inequality was discovered to be owing to a mixture of 
steely particles. Be this as it may, M. Parisot, who took the 
trouble to direct and superintend these experiments, considered 
this iron to be of excellent quality, and exactly like our iron 
from the department of Arriége, which is manufactured by the 
Catalonian method, and which is always mixed with grains and 
small veins of steel. 
