( 830 ) 
It can be seen that the values obtained for ,4 are not the same at 
the two temperatures. Meanwhile it has to be applied here only as a 
correction for the susceptibility of solid oxygen which at the most is 
3°/o- A difference of temperature of J°C. in the bath under reduced 
pressure gives more than half the difference between the two values, 
whence we have given the determination under reduced pressure 
only half the weight accorded the measurement at ordinary pressure. 
The uncertainty of the mean has less than 1% influence upon the 
value of the susceptibility of solid oxygen. The curve for as well 
as its sign correspond with what were found for the silver ellipsoid. 
TABLE VIII. 
Susceptibility of solid oxygen. 
/ = — 
fbath of liquid hydrogen .boiling under atmospheric pressure). 
H 
K. 10 6 
K.W 
corrected 
gauss 
the scale 
jp- w 
uncorrected 
according to 
tab. VII. 
2296 
0.89 
1.60 
519 
533 
4615 
3.57 
1.676 
518.3 
532.9 
6944 
7.92 
1.642 
512.3 
527.3 
9205 
14 07 
1.660 
515.0 
530 1 
11280 
21.14 
1.661 
515.2 
530.1 
12835 
27.92 
1.684 
518.7 
532.8 
14015 
32.96 
1.678 
517.6 
529.0 
14900 
37.38 
1.683 
518.4 
527.5 
15585 
40.77 
1.678 
517.6 ' 
523.7 
16120 
44 05 
1.696 
520.0 
523.6 
Mean 529.0 
whence it follows that X2o°.3K. = 10-6 — 375.2.10— 6 . 
