1394 
TABLE II. | 
TeK eel AO Hg | 20? 
| | 
457.3* | 1212 1203 1207 
373.6* | 1046 | 1050 1052 
293.95 In 887.2 886 
| 287.6"). S77 874 875 
273.0* | 844 843 843 
261.2804) 18 814 | 816 
255.3* | 802 800 803 
938 2%). 760 747 157 
212.9* | 710 697 709 
194.4" | 670 648 666 | 
170.2 609.3 | 582 608 | 
89.63 | 392.2 | 326 389 | 
[78.2% 74 De Bea 354] | 
70.87 | 319.3 | 257 329 | 
20.04 |105—111 | 58 137 
In Table IT our results are put together with those of Markowskt 
and of Kopscn') (the last are marked with an asterisk). Fig. 3 
shows that our measurements correspond well with the previous ones. 
Korscu’s determination in liquid air forms an exception. The cause 
of this is probably an insufficient fore-cooling in Kopscn’s apparatus, 
as it is improbable that the density should have an important in- 
fluence?) here. ; 
In column 38 under »,.10* are given the values calculated by 
SUTHERLAND’s formula with 1, = 841.10? and C= 83. The differences 
become very great at the lower temperatures, in liquid hydrogen 
more than 100 °/,. 
Korsen has already pointed out that SurarrranND's formula no 
longer holds for hydrogen at the temperature of liquid air, and 
although the deviation which he found seems to be partly ascribable 
1) H. MARKOWwSKI. Ann. d. Phys. 14. 1904 pag. 742. 
*) Observations for He which will be treated in a following paper, show that 
there is no such dependence on the density. 
