220 Mr Purvis, The influence of a strong magnetic field on the 
\ 
Inten- 
sity 
d\/\ 2 
3575-95 
1 n. 
+ 1-96 s 
0 p 
- 1-90 s 
2833-18 
1 r. 
+ 1-96 s 
0 p 
-1-96 s 
[ The middle constituent was removed by calcite before 
j measurement. 
2823-28 
3 
+ 1-29 s 
0 p 
- 1-29 s 
(The middle constituent was removed by calcite. Exner 
J and Haschek describe the line as 1 r : but it was not 
1 so strong in my photographs. Compare Sn 2850 
( (p. 221). 
2802-12 
1 r. 
+ 1-44 s 
0 p 
- 1 - 44 s 
1 The middle constituent was removed by calcite. The 
j constituents are comparable with those of Sn 3261. 
Tin. 
The line 333075 was divided into four; but the constituents 
could only be seen well separated on analysis by the calcite. The 
measurements were taken between corresponding constituents. 
+ 1-79 s 
-j 
3330-75 
1 
+ 1-22 p 
0 
- 1-22 p 
-1-79 s 
[The two extreme constituents were weaker and more 
f diffuse than the two middle ones. 
The following lines were divided into three components. The 
middle constituent of each triplet was usually the strongest, but 
the exceptions are noted. 
4524-93 
1 n. 
+ 1-64 s 
0 p 
-1-61 s 
3801-15 
1 n. 
+ 1-22 s 
0 p 
-1-22 s 
1 The middle constituent was removed by calcite. 
) 
3261-60 
1 r. b. 
+ 1-50 s 
0 p 
-1-52 s 
( The two extreme constituents were only a shade weaker 
l than the middle one. They are comparable with 
j those of Pb 2802-12. 
3175-17 
1 r. b. 
+ 2-12 s 
0 p 
-2-13 s 
\ The two extreme constituents were only a shade weaker 
l than the middle one. They are comparable with 
) those of Pb 3639-72 (p. 219). 
3033-00 
1 
+ 2-12 s 
0 p 
-216 s 
| do. 
