1S93 Sheldon] 



ABSTRACT 



31 



potential fall, and the velocity calculated from Kohlrausch's 

 conductivity measurements and Hittorf's migration determina- 

 tions. In the case of the alcoholic solutions, for lack of migra- 

 tion determinations, the sum of the observed ionic velocities is 

 compared with that calculated from the conductivity. 



CuClj and NH^Cl 

 CuCIj and NH^Cl 



KCl and KMnO^ 

 KCl and KMnO^ 



KjCrjO, and K.,CO;, 



KjCr^O, and KCl 



CoCNOs), and CoClj 

 CoClj and CaCl^ 



Co(N03)j and CaCNOj), 



1893. S. Lussana. 



Einfluss der Temperatur auf die elektromotorische Kraft der Concentrations- 

 elemente und die Wanderung der lonen. Beibliitter, //, 218, from Atti del R. 

 1st. Venet., Ser. VII, j, iiii (1892). 



Apparatus : Horizontal tube bent into five parallel portions, 

 with vertical tubes sealed on at the ends and at the middle ; 3 (?) 

 middle portions. 



The author found the migration of the cation (i-«) propor- 

 tional to the absolute temperature {T). In the second column 

 below is given the weight of salt in lOOg water ; in the third 

 the value found for io''{i-n)/T; and in the last the transport of 

 the anion at o° C. 



1893. S. Sheldon and G. M. Downing. 



Die kritische Stromdichtigkeit fiir Kupferniederschlage und die absolute 

 Geschwindigkeit der Wanderung der lonen. Beibliitter, /^, 1090, from Phjs. 

 Rev., /, 51. 



The author deduced the migration values from measurements 



of the limiting current density at which normal products appear 



at the electrodes, and above which secondary reactions occur. 



The velocity is presumably in cm. per second for unit potential 



fall. 



CUSO4 0.1- 1. 89m 0.00020-0.000445 



