Cast Iron^ Steely and Malleable Iron, 
For 35 grains of those irons. 
577 
Ingredients. 
Gray 
French 
Iron. 
White 
Welsh 
Iron. 
Creuzot 
Iron. 
Iron (a). 
Iron (&). 
Iron (c). 
Speci- 
men (d). 
steel. 
Residuum 
in acids. . 
|5-53 
6-7700 
12-005 
10-890 
16-625 
9-45 
10045 
1-995 
Increase of 
weight 
after ig- 
nition .... 
0-000 
0-9084 
2-697 
0-385 
1-880 
1-82 
0-880 
0-059 
Flocculent 
powder 
after boil- 
ing with 
hydro- 
chloric 
acid 
(lost.) 
4-762 
0-6270 
1-603 
2-316 
2-036 
0-485 
2-044 
0-381 
gray. 
gray. 
gray. 
gray. 
black. 
black. 
black. 
gray. 
Table inclusive of the increase of 'weight in the different 
states of ignition. 
Gray 
French 
Iron. 
White 
Welsh 
Iron. 
Creuzot 
Iron. 
(«). 
(6). 
(C). 
Loss. 
Steel. 
1st 
0-000 
0-173 
0-000 
0 064 
0-1454 
1-14 
0-059 
2nd 
0-000 
0-584 
0-450 
0-209 
0-8000 
1-16 
0-000 
3rd 
0-000 
0-043 
0-846 
0-096 
0-560 
0-80 
0-000 
4th 
0-000 
0-000 
0-810 
0016 
0-218 
0-00 
0-000 
5th 
0-000 
0-000 
0-210 
0000 
0000 
0-00 
0-000 
6th 
0-000 
0-000 
0-162 
0-000 
0-000 
0-00 
0-000 
7th 
0-000 
0-000 
0-144 
0000 
0 000 
0-00 
0-000 
8th 
0-000 
0*000 
0-018 
0-000 
0-000 
0-00 
0-000 
9th 
0-000 
0-000 
0-054 
0-000 
0000 
0-00 
0-000 
10th 
0-000 
0-000 
0-000 
0-000 
0-000 
0-00 
0-000 
If we treat powdered iron with a current of dry chlorine, a 
quantity of silicon is always retained by the remaining car- 
bon and azote ; and this is likewise a proof that a certain 
quantity of silicon is chemically combined with the carbon, 
as no alkali has the power to extract it^. 
* In specimens in which the silicon is combined with the iron, the silicon 
is left after the solution of the iron in acids, in the form of a white and 
somewhat gelatinous granulation, as we saw in the gray iron from Vienne. 
On the contrary, where the carbon is combined with the silicon in not too 
large proportions, even a white heat is insufficient to burn this carbon, as 
we had examples in the black second remainders of the iron, (6), (e), and 
