﻿New Type of Ion in the A h 



641 



The positive and negative signs in the table indicate the 

 electrical class of ions to which the respective observations 

 refer, but it may be stated here that no definite difference 

 between the mobilities of the positive and negative ions can 

 be deduced from the results. 



Table I. 







[ 







Length 



1/^60. 



T. 



p. 



p/Y. 



N. 



of 



electrode, 

 cm. 









per cent. 







15-0 4- ' 



21-8 



0'78 



4 



130 



3-85 



15-24- 



20-8 



073 



}? 



158 



<3 



17-6- 



19-7 



0-68 



- 



78 



» 



38-9- 



18-4 



4-97 



31-5 





160 



49 24- 



248 



7-33 



» 





7*7 



43-0- 



20-0 



5-92 



34-0 





3-85 



53-0- 



21-3 



641 



- 





» 



49-8- 



20-9 



11-67 



64 



... 



160 



53-0- 



20-9 



10-82 



59 







53-44- 



24-5 



14-18 



62 





25 



54-8- 



15-3 



6-66 



51 





160 



55-14- 



20-4 



13-29 



75 



426 





56-24- 



20-1 



11-29 



64 



114 



)> 



604 + 



21-6 



14-11 



73 



156 



») 



63-34- 



23-9 



15-66 



71 





25 



65-34- 



22-6 



15-43 



76 



291 



160 



68-4+ 



21-0 



13-16 



71 



281 



,, 



86-4+ 



24-3 



15-58 



69 





25 



910+ 



242 



14-40 



64 





,, 



110-34- 



221 



13-89 



70 



514 



3-85 



1242- 



22-2 



14-35 



72 



1346 



» 



137-4- 



22-2 



15-43 



78-5 



1144 



3-85 



139-9- 



24-5 



1667 



73 



174 



7-7 



156-1- 



234 



14-87 



69-5 



458 



j> 



157-34- 



22-8 



14-06 



68 



1165 





350 + 



19 5 



16-88 



89-1 





25 



407+ 



19-7 



17-09 



" 





" 



Discussion of He suits. 



In my previous paper, on the nature of the large ion. I 

 showed by a simple thermodynamic argument that a formula 

 of reduction for adsorption observations at different tempe- 

 ratures is contained in the expression (^i//> 2 )»»= (I\ P-V ". 

 p and P are, respectively, the values of the pressure of the 

 vapour in equilibrium with the adsorbed fluid, and the saturated 



Phil. Mag. S. 6. Vol. 29. No. 173. May 1915. 2 T 



