Cast Steel . 
375 
Exp. XII. Swedish iron - - grs, 1537 
Charcoal ~th, or 3 1 grs. 
From the exposure of this mi >,ture 5 a metallic but- 
ion was obtained, which weighed - 1533 
Lost in fusion, equal to ^f-j-th part 4 
The surfaces of this button were uniformly smooth,, The 
fracture was dense, and displayed a grain peculiar to high- 
ly saturated blistered steel. When put under the ham- 
mer, with a low red heat, it stood a few blows, but after- 
wards parted. Weight of mixture employed in the ex- 
periment grs. 1568 
Steel obtained - - 1533 
Total loss of weight 35 
r m — 1 JWTB-Sa 
Exp. XIII. Swedish iron - - 1362 
Charcoal ~th, or 15 grs. 
A very fine fusion was produced from the exposure 
of this mixture. The metallic button was found 
to weigh 1319 
Lost in fusion, equal to -2--th part, 43 
^ Wo 
This button presented a wavy crystallized surface. The 
under surface was rough, and contained one large pit ac- 
curately crystallized. The fracture was regularly granu- 
lated, small, but distinct, of a light blueish colour. The 
crystals, though distinct, were not so prominent as those 
of easy drawing cast steel. It, however, hammered with 
the usual degree of caution necessary to the working of 
cast steel. The bar of steel formed from the button pos- 
sessed all those properties requisite for file making, -and 
other purposes requiring a quality highly charged with 
carbonaceous matter. Grs. 
Weight of the mixture . . 1377 
Steel obtained - . « 1319 
