1899 Hittorf] ABSTRACT 43 



i8gg. C. Dittrich. 



Die Uranjlsalze vom phvisikalisch-cheinischen Staiulpunkt aus betrachtet. 

 Zeit. phjs. Chem., 2g, 481. 



The solution to be investigated was placed in the bottom of a 

 U-tube ; above it in both branches was placed a solution of the 

 pure acid, in some cases in tubes closed at the bottom with 

 parchment, and containing Pt electrodes. When necessary the 

 uranyl solution was made specifically heavier by the addition of 

 urea. After the passage of the current the electrode solutions 

 were examined for uranium. In the following table are given 

 the components of the mixed solutions investigated, and the 

 compartment into which the uranium migrated. All experi- 

 ments were performed at least twice. In the cases of the pure 

 uranyl salt solutions, the uranium was moved in all cases to- 

 wards the cathode. 



1899. W. Hittorf und H. Salkowski. 



Ueber eine merkwurdige Klasse unorganischer Sauren und ihr elektroljtisches- 

 Verhalten. Zeit. phys. Chem., 28, 546. 



Apparatus : two glass trays connected by a siphon, the 

 cathode in a glass bell suspended above ; capacity 25 c.c ; Pt 

 electrodes ; no diaphragms ; no middle portion ; calculation 

 correct. 



