1892 Bein] ABSTRACT 29 



Sulphates of Zn, Cu. 



" Zn, Cd. 

 " " Zn, Ag. 



" Zn, Na, Mg, Cu. 



" Zn, Cu, Ni, K. 

 Nitrates " Ba, Ag. 



" Ba, Cu. 



" Ba, Ni. 



" Ba, Zn. 



" Ba, K, Cu. 

 " " Ba, K, Cu, Na, Zn, Mg, Co, Ag. 



" Pb, Ba, Zn, K. 



" Cu, Ba, Ag, K. 

 Chlorides " K, Zn. 



" " Ca, Na, Zn, Cu. 



" Zn, Ba, Mg, K. 

 Sulphates " K, Cd, Cu, with acetate of Zn. 

 K.^SO„Zn(C2Hj02)j. 

 Zn(C2H30.Jj, K^SO,, Na^SO,, NaCjHjOj. 



1890. W. Kistiakowsky. 



Die wasserigen Losungen von Doppelsalzen. Zeit. phys. Chem., 6, 97. 



Apparatus a knee-shaped burette; capacity lOO c.c. ; Ag 

 electrodes; no diaphragms ; middle portion unchanged. The 

 concentrations are expressed in mols per looog solution. 



AgNOj 0.0189 15' o-04g Ag lex ac.531 



AgsCr(CjOJ3 0.022 14° o.osgAg 3ex ac.57- ± 18 



1892. W. Bein. 



Beitriige zur experimentellen Bestimmung von Ueberfiihrungszahlen in Salz- 

 losungen. Wied. Ann., 4b, 29. 



Apparatus of three types, capacity 55-90g, viz. ; (i) super- 

 posed glasses with diaphragms of fish bladder (B), or usually 

 of porous earthenware (E) ; (ii) a winding spiral and U-tube, no 

 diaphragms ; (iii) a knee-shaped burette. 



In experiments with CuSO^, CdClg, CaCU, and CdL the volt- 

 age was varied from 20-100 volts without affecting the results » 

 In the fifth column below are given the concentration changes 

 in the middle portions; the values in the last column given in 

 ( ) are those obtained by Bein in 1899 by a recalculation. 



The method of calculation is correct ; the accuracy of the 

 better experiments is estimated to be one or two units in the 

 second decimal place. 



