(672) 
TABLE III. 
t — 19 .5 C. Hydrogen at atm. pressure (20°.2 K.) 
H (gauss) r (cm. of 
the scale) 
before 
16100 91.74 
20540 92.09 
after 
16100 91.79 
20540 92.20 
The zero determined from the 
changed by about 2 mm. 
R (gauss) P (cm. of 
the scale) 
1780 93.57 
5410 100.49 
5050 101.54 
11830 101.84 
16100 102.13 
19050 102.34 
20540 102.51 
22020 102.48 
22840 102.49 
t of readings to right and left 
For H— 16100 gauss — 1.0549 
„ H — 20540 „ „ 1.0547 
mean 1.0548 not connected fordilation. 
Cobalt. 
The measurements with cobalt did not lend ,i, . , 
? ,ween ,hepo,es wou,d ’ and henee a 
already happened.^AUhou^T m^rf^ 8 °“ ethin S “"expected 
left ought to have given the zer^tt of 1 '° ^ 8111(1 
was actually observed to vary wi^thp « th ® W aratus * the point 
wards see/ to be about ^ ™ ^ 
following figures bring this out deaT«n T '‘ e 
the external field is given uncorrected for ,he rf measurements 
the ellipsoid. When saturation is reached 
