ON THE MEASUREMENT OE TEMPERATURE. 
165 
Vapour Pressures of Liquid Hydrogen. 
Pressure on gas 
in thermometer. 
Temperature of 
dead-spac-e. 
Temperature 
of stem. 
Vapour pressure 
of 
liquid hydrogen. 
Tempt 
Found. 
irature 
Calculated. 
niillims. 
■’C. 
° He. seale. 
inillims. 
° He. scale. 
° He. scale. 
April 18th, 1902. 
74-83 
15-5 
31 
765-0 
20-42 
20-44 
72-09 
15-2 
29 
604-1 
19-70 
19-63 
72-04 
14-9 
28 
606-6 
19-69 
19-61 
67-26 
14-6 
26 
390-5 
18-38 
18-28 
o5 - 98 
14-3 
21 
100-0 
15-29 
15-14 
55 - 48 
14-0 
25 
98-0 
15-15 
15-10 
55-43 
13-7 
25 
97-5 
15-1 1 
15 - 09 
May 1st, 190 
74-75 
15-6 
41 
759 - 2 
20-41 
20-41 
68-70 
15-3 
33 
449-0 
18-76 
18-70 
55 - 20 
15-2 
27 
96-8 
15-07 
15-08 
55-30 
15-2 
27 
75-8 
14-55 
14 67 
52-90 
15-1 
27 
69-4 
14-44 
— 
52 - 20 
15-1 
27 
62-0 
14-25 
14-38 
55-05 
14-8 
35 
95 - 3 
15-01 
15-06 
51-30 
14-7 
31 
55-2 
14-00 
14-22 
55-00 
14-7 
91 
95 - 6 
15-01 
15-05 
51-90 
15-0 
29 
59-2 
14-16 
14-32 
For measurement of vapour pressures of liquid oxygen with this thermometer, 
see Part IT., 11 (II.). 
(II.) Thermometer B (26 cub. centlms. bulb). Helium purified ])y passing tlirough a 
coil cooled to 15°’5 abs. (see p. 174). 
Ice-Point of Thermometer, June 4th, 1902. 
Pressure on gas 
in thermometer. 
Temperature of 
dead-space. 
Constant. 
minims. 
° C. 
Main thermometer .... 
939-95 
17-35 
90-516 
Auxiliar}' thermometer. 
954-0 
17-35 
8-093 
