PLATE 8. 
Figure. 
Atomic 
percentage 
of tin. 
Per cent. 
1 ‘)y weight 
of tin. 
Magni¬ 
fication. 
Method of cooling 
the ingot. 
Method of 
etching. 
] 
Description. 
1 
84 
Sir 50 
65-1 
X 45 
S.c.c. 445° 
HCl + FeCls 
Primary after 70 hours’ 
sulphur boil. Chill prim-! 
ary is H. 1 
1 
1 
So 
1 
Sn 80 
88-2 
X 18 
C. 433° 
Primary plates of >; in tin- 
rich liquid. 
86 
8 ii 50 
65-1 
X 45 
S.c.c. 420’ 
J) 
Primary plates of >/ in tin- 
rich liquid. 
87 
Sn 73 
83-5 
X 45 
C. 373° 
Plates of darkened mar¬ 
gined by white H. In ' 
liquid. 
88 
Sn 29 
43-2 
x45 
S.c.c. 380° 
Plates of darkened mar¬ 
gined by H. No liquid. 
89 
Sn 90 
94-4 
X 45 
Not chilled 
„ 
Primary of H in eutectic 
of H and tin. 
90 
1 
Sn 95 
97-25 
X 45 
Primary of H in eutectic 
of H and tin. 
91 
! 
i 
Sn 50 
65-1 
X 45 
i 
5’ 
Bars of with narrow mar¬ 
gin of H, in H -f tin 
eutectic. 
92 
5) 
65-1 
X 18 
C. after 10 hours 
at 380° 
5) 
H reaction incomplete. >/ 
largely transformed. 
1 
