I90I Jahn] ABSTRACT 47 



pressure upon the migration value, which he assumes as 0.699 > 

 ■p is the pressure in atmospheres. 



xgoi. H. Jahn's Schiller. 



Ueber die Wanderungsgeschwindigkeit der lonen in verdiinnten Ldsungen. 

 Zeit. phys. Chein., J7, 673 ; 3S, 127. 



Apparatus : N-shaped tube fitting on top of the Erlenmeyer- 

 flask-like anode compartment ; capacity of the anode vessel 

 300-700 c.c. ; no diaphragms ; Hg cathode surrounded by a 

 concentrated solution of copper nitrate or cadmium sulphate ; 

 i8°-i9° ; calculation correct. 



In the fourth column I have calculated the percent change 

 in the middle portion. 



' 25 percent ethyl alcohol. 

 ^50 percent ethyl alcohol. 



