1G4 
PR. M. W. TRAVERS, MR. G. SENTER, AND DR. A. JAQUEROD 
V^apour Pres3nre.s of Liquid Hydrogen, 
June 4th, 1902. 
Pressure on gas 
Temperature of 
Temperature 
Vajjour pressures 
of 
liquid hydrogen. 
Temperature 
in thermometer. 
dead-space. 
of stem. 
Found. 
Calculated. 
milliins. 
71-8.3 
71-83 
“ u. 
18-1 
18-2 
° ir, scale. 
27 
29 
inillims. 
76G-6 1 
766-6 J 
II. scale. 
20-2S 
° II. scale. 
20 - 25 
For the vapour pres,sure of liquid oxygen on this thermometer, see Part II., 
10 (III.). 
7. The Vapour Pressures of Liquid Hydrogen on the Constant-Volume 
Helium Scale. 
(I.) Thermometer A (12 cub. centims. built). For preparation of helium (fraction 1), 
see pp. 172, 174. 
Ice-Point of Thermometer, April 17th, 1902. 
Pressure on gas 
in thermometer. 
Temperature of 
dead-space. 
Constant. 
inillims. 
° C. 
Main thermometer .... 
976-42 
16-0 
44-760 
Auxiliary thermometer. 
996-5 
18-9 
7*73 
