( B31 ) 
(bath of 
TABLE IX. 
Susceptibility of solid oxygen, 
t = — -258,9° 
liquid hydrogen under 70 mm. vapour 
H 
107 /f.l' 6 
tf.1l 6 1 
gauss 
m uncorreded 
corrected j 
2296 
1.19 
2.257 600.5 
614.5 
4615 
4.80 
2.253 600.1 
614.6 
6944 
10.86 
2.252 | 600.0 
615.0 
9205 
19.24 
2.270 602.2 
617.1 
14280 
28.13 
2.210 594.3 
609.2 
12835 
. 37.09 
2.250 | 599.6 
613.7 
14015 
45.05 
2.293 604.7 
616.7 
14900 
51.24 
2.306 606.8 
615.9 
15585 
55.73 
2.293 605.3 
611.1 
16120 
60.20 
2.317 | 608.5 
612.1 
From the mean 614.0 follows x, 0 /. u°.2K. =*= ^ 41 = • 10 “ 6 - The 
products into V y .T are 
- 252. °8 375.2.10—© 1^2013 = 1600.10~c 
- 258.°9 435.6.10-6 j^L2 = 1641.10-6. 
Hence we can represent the two observations pretty well by 
_l 690 1 A—fi 
which is adjusted to the measurement at the higher temperature. 
The deviation from this ratio for the lower temperature, however, 
is somewhat greater than the errors of observation. 
$ 5. Summary and conclusion. As regards the dependence of specific 
susceptibility upon temperature our most reliable determination gives 
*,•,.*>».! k. = 24°.«-l 0 - 6 - 
Curas found x = L 3 ^°,J0-» between 20" C. and 450" C. whence it 
