148 
mi. M. W. TRAVERS, ^IR. G. SENTER, AND DR. A. JAQUEROD 
(III.) Thermometer B (26 cub. centim.s. bulb), filled with hydrogen, June 2nd. 
Ice-Point of Thermometer. 
Pressure on gas 
in thermometer. 
Temperature of 
dead-space. 
Constant. 
minims. 
C 
Wain thermometer .... 
9.52 "55 
17-75 
91-717 
Auxiliary thermometer. 
951 
17-75 
8-09.3 
Vapour Pressure of Liquid Oxygen. 
June 3rd, 1902. 
Pressure on gas 
Temperature of 
Temperature 
Vapour pressure 
Temperature 
in thermometer. 
dead-space. 
of stem. 
liquid ox 3 '’gen. 
Found. 
Calculated. 
millims. 
° C. 
° IT. scale. 
millims. 
° H. scale. 
° H. scale. 
293-75 
19-1 
9S 
316-7 
83-21 
83-23 
This result is the mean of two very concordant observations. 
11. The Vfcpour Pressures of Liquid Oxygen on the Constaid-Volume Helium 
Scale. 
(I.) Thermometer A (12 cub. centims. bull)). 
The helium, wliicb bad been obtained by beating cleveite, was purified by sparking 
with oxygen, and was afterwards passed through liquid oxygen condensed in a bulb 
and cooled to below — 200° C. The gas was passed through a bulb immersed in 
liquid air on its way into the tliermometer. 
Ice-Point of the Thermometer. 
Pressure on gas 
in thermonreter. 
Temperature of 
dead-sj3ace. 
Constant. 
Wain thermometer .... 
millims. 
966-9 
° C. 
11-6 
11-327 
Tlie auxiliary thermometer was still filled with bvdrogen. 
