490 Mr. G. ^y. Wiilker on the 



From this we deduce 



K=l + 



•000 8966 P J -0058 P ] f ^38(9ol 



(l + -0037076| ^ (l + -0037/)76j| "^ J* 



Hence at 16° C. and 76 cms. we get 



K = l + -000886. 



Boltzmann gives K = l + '000892 at 76 cms. and 16° C. 



Hydrogen. 



In this case the variation of //- with temperature was 

 distinctly less than that given by the Jaw fJ?—\ oc N. 



Although the compressibility term for hydrogen is less than 

 unity and gives a temperature variation of the same sign as 

 that found experimentally, the variation is insufficient to 

 account for the observed facts. Hence the only portion of 

 the curve which will meet the case is that between the points 



A and B. Ketteler eives — ^— - = 1*00456 from Li red to Na. 



If we take ^ =4 for the Na line and 0° C, we get 



hO, 



X-4382 



I- r\ x-4839 



= 1-00456. 



Hence 



hOo 



= •095. 



My experiments may be reduced as follows : — 







Eatio 





Divided by 





Temp. 



Eatio. 



, -0014 



Multiplied by 



(1+ -003650- 



1+ 119^^0 ^1_ 



4^)- 



(1+-003650' 



10-65 



3-048 



3-052 



3-170 



3-305 



1 



10-85 



3-039 



3-043 



3-163 



3-298 





23-3 



2-920 



2-924 



3-172 



3-305 





32-35 



2-830 



2-833 



3167 



3-297 





33 



2-827 



2-830 



3-171 



3-301 





65-8 



2-560 



2-563 



3-178 



3-299 





77-5 



2-479 



2-482 



3-184 



3-302 





81-7 



2-449 



2-452 



3-185 



3-301 





83-2 



2-445 



2-448 



3191 



3-307 











Me 



an 3-302 



1 



1 



