pownts in the Manujacture of Malleable [ron. 273. 
Further analyses were made of another specimen, before and 
after its annealing, which when, annealed and broken was brittle, 
and showed the crystalline structure to some extent. 
VIL. Before annealing. 
: 
EB Average. 
Silicon, 577 ‘580 579 
Phosphorus, "425 "423 424 
Manganese, 154 117 "165 
Sulphur, “116 112 114 
Total Carbon, 3-277 3°285 3°281 
VIL. After annealing. 
1; 2. Average. 
Silicon, 560 babe 60 
Phosphorus, "46 “44 450 
Manganese, 136 158 “147 
Sulphur, "113 Sune 113 
Total Carbon, below 0°10 per cent. 
The weakness in this case may perhaps be partially caused 
by the large amount of phosphorus present,but the next two 
analyses made of specimens, which when broken after being 
annealed were very brittle and showed a most decided crystal- 
ine structure, go to prove that this phenomenon of crystalliza- 
Hon cannot be attributed to the presence of an excessive 
amount of silicon, phosphorus or sulphur. 
TX. Once annealed, large erystalline Saces in fracture. 
1. . 
Average. 
Sili “44 “46 450 
Phosphorus, 267 266 "266 
Manganese, "264 "182 "223 
Sulphur, 145 133 139 
Carbon, below 0°10 per cent. 
X. Twice annealed, crystalline faces extended entirely across the 
Sracture, 
jh Average. 
Silicon, 585 593 589 
Phosphorus, 213 212 "212 
anganese, "149 158 153 
Sulph 092 118 ‘105 
Carbon, none or slight trace. 
The above analyses to seem afford no explanation of this erys- 
talline structure, and the cause of it can only be determined by 
careful experimenting and by the comparison of a large num 
of trustworthy anal : : 
€ next analysis was made of an annealed casting which 
When bent sliciwadl a greater degree of toughness than common. 
