On the Magnetic Susceptibility of Liquid Oxygen. 323 



II. With the Bismuth Ball. 



Volume of ball at temperature of liquid oxygen = 6'287 c.c. 

 Density of liquid oxygen = 1'1397. 

 Distance of centre of ball from pole = 4*865 cm. 

 Magnetic susceptibility of bismuth ball = 13'75 X 10~ 6 at 15 C. 



= 15-9xlO- 6 at-182C. 



Mean value of susceptibility of liquid oxygen as determined with 

 the bismuth ball = 319 X 10~ 6 . 



III. With the Copper Ball 



Volume of ball at temperature of liquid oxygen = 4' 190 c.c. 

 Density of liquid oxygen = 1*140. 

 Distance of centre of ball from pole = 5*46 cm. 

 Magnetic susceptibility (varies from 8 X 10~ 6 to 15 x 10~ 6 ). 



Mean value of susceptibility of liquid oxygen as determined with 

 the copper ball = 327 x 10~ 6 . 



