PLATE 6. 
Fio;ure 
! 
Atomic 
percentage 
of tin. 
Per cent, 
by weight 
of tin. 
Magni- 
1 fication. 
Method of cooling 
the ingot. 
Method of 
i etching. 
Description. 
1 
t 
1 
60 
Sn 22 
34-45 
X 18 
S.c.c. 565° 
HCl + FeCls 
Dark bands of >/ and lace 1 
complex of 8 + •>/. 
61 
34 • 45 
X 45 
C. 495° 
Dark bars of >/ and lace 
bars of 8 + 7/. 
62 
Sn 23 
35-8 
X 18 
V.s.c.c. 620° 
Crystallisation of in¬ 
creasing in amount. 
63 
Sn 24 
37-1 
X 18 
S.c.c. 685° 
)) 
Solid y (crystallisation of 
1 ] not wholly prevented 
by chill). j 
I 
64 
n 
37-1 
X 18 
S.c.c. 635° 
« 
” 
Dark crystals of nearly 
filling the alloy. 
65 
Sn 25 
38-4 
X 13 
S.C.C. 720° 
Ignited to orange 
Copper-i’ich y combs darker 
than tin-rich licj^uid. 
65a 
M 
38-4 
X 45 
S.c.c. 720° 
Shows the breaking up of 
the y into complex of 
fig. 64. 
66 
38-4 
X 18 
Not chilled 
HCl + FeCls 
Bars of ditferently oriented 
V- 
67 
Sn 26 
39 • 65 
X 45 
C. 656° 
Solid solution of y. 
68 
39 • 65 
X 45 
C. 612° 
n 
Plates of )/. 
69 
Sn 27 
40-8 
X 18 
S.c.c. 647° 
n 
y with traces of liquid and 
chill primary of 7 / bars. 
70 
n 
40-8 
X 45 
S.c.c. 635° 
n 
Solid solution y. 
71 
1 ) 
40-8 1 
X 45 
C. at 625° 
1 
HCl + Br i 
Plates of 7/ with inclusions 
of tin-rich liquid. i 
i 
I 
