26 



With solutions of potassium iodide the values « = .5ii to 

 n = .520 were found independent of the concentration and of 

 the amount of alcohol present. 



The experiments with potassium chromate were carried out 

 in a slightly modified apparatus, in which a Pt cathode sur- 

 rounded by potassium carbonate solution, and a Mg anode were 

 employed ; n = .46 — to w = .51 — independent of the concen- 

 tration and of the percent of alcohol. 



The paper further contains a number of measurements of 

 conductivity and diffusion. 



1885. J. Moser. 



Elektrische und thermische Eigenschaften von Salzlosungcn. Wien. Sit- 

 zungsber., g2, Abth. II, 652. 



The author calculated the migration values by means of the 

 formulae of Helmholtz from the E.M.F. of concentration cells 

 with and without diffusion. 



ZnClj + 100 H2O and ZnCl^ + 750 HjO lex .71— 



ZnSO^ + 100 HjO and ZnSO^ -f 800 H^O lex .64— 



1886. 0. Lodge. 



On the Migration of Ions and an Experimental Determination of Absolute 

 Ionic Velocity. Brit. Assoc. Rep., 1886, 389. 



In the following series of experiments, two cups were con- 

 nected by a horizontal siphon. When the current was passed 

 through, the ions from the cups moved through the siphon, their 

 progress being followed by a color change or by the formation 

 of a precipitate. 



