72 Mr. Clive Cathbertson on New Determinations of 



Table II. 



Element. 



1. 

 NxlO~ 27 . 



VxlO- 27 . 





1-21238 

 2-59826 

 4-71632 

 5 3146 

 6-1209 



34992 

 38916 

 17009 

 12768 

 8978 



Neon , 



Argon 





Xenon 





If the figures in the first column, which are proportional 

 to the number of " dispersion electrons " in the atom, are 

 plotted against the square roots of Rankine's values for the 

 relative mean free path at 0° and 100° C, we obtain two 



Fig. 1. — Inert Gases. 



Relative number of dispersion electrons plotted against square roots 

 of relative mean free paths at 0° and 100°. 



7 



.\ x 

















\ 



[>. 



\ 















\. 





\ 

















.-^A 



















• We. 



x 

















\ 



H2 \ 





















curves which are shown in fig. 1. The radios of curvature 

 is directed away from the origin, but the lines are so nearly 



