36 Mr. 8S. C. Laws on the Magnetic Susceptibility 
The mean value obtained for & is 8°83 x 10-®, which is 
about one-third less than that obtained for bismuth. 
Alloy No. 3.—Containing 10:0 per cent. tin. 
Radius of rod =*2616 ems. 
ik a. an eee gli 
ae | 
18 235 | 226 | -039 | 6-96 
2-6 339 | 37 081 7-01 
3:3 | 431 | 545 | +180 | 694 
4 523 | 89 195 | 712 
| 48 627 128 231 | 711 
| 58 758 | 657 | +388 | 686 
ioe 915 | 958 | 578 | 6:86 
8 1046 | 197 «| «768 | 696 | 
9 1176 | 1615 | -972 | 7-00 | 
10:2 1333 | 207 125 | 698 | 
These experiments indicate that for this alloy also, the 
magnetic susceptibility is independent of the magnetizing 
force. 
The mean value found for & is 6°96 x 10~-°, which is exactly 
half that found for bismuth. 
Alloy No. 4.—Containing 23:6 per cent. tin. 
Radius of rod =*2769 cms. 
C. Hi, o. Ly kx 10°. 
26 339 58 074 567 
3: 444 101 198 | 578 
40 523° 138 176 | 5-70 
45 588 , 1735 | +221 | 566 
52 680 82 ‘200 | 57 
65 849 1288 | -469 | 5-74 
75 980 161 624 | 577 
83 1085 197 765 | 5°76 
10-2 1383 297 117 | °.5°80 
Here as in all other cases it will be observed that the values 
of & remain constant throughout the range of magnetizing 
forces used. 
. The mean value obtained for k is 5°73 x 10—*, which is 
about 18 per cent. less than that obtained for the preceding 
alloy containing 10:0 per cent. tin. 
From the above experiments we are able to conclude that 
the addition of tin to bismuth, or to an alloy of bismuth and 
