1904 Tower] ABSTRACT 65 



in 1000 g. 11,0. In qualitative experiments it was found that 

 the yellow color of a concentrated solution of cupric chloride 

 in hydrochloric acid moved toward the anode into a concen- 

 trated solution of hydrochloric acid or magnesium calcium or 

 lithium chloride, proving the presence of complex anions. 

 When concentrated cupric chloride solution was electrolysed 

 between layers of ammonium or sodium sulphate or acetate, the 

 boundary on the anode side remained stationary, while a blue 

 color moved towards the cathode. The method of calculation 

 is correct. I think that the probable explanation of the extra- 

 ordinary influence of the concentration on the migration value 

 is to be sought for in the excessive hydration of the cation. 

 Surely the fourth experiment must be a mistake. 



CuClj 7ii.3g = 5.29 mols 



584.4g = 4-35 " 

 5oo.9g = 3.72 " 



445-4g = 3-3 



357-5g=2.66 " — 1.35° 



357-5g = 2.66 " -f 17-95° 



1904. T. W. Richards and F. Bonnet. 



Das veranderliche hydrolytische Gleichgewicht von gelostem Chromsulphat. 

 Zeit. phjs. Chem., ^7, 46. Proc. Am. Acad. Arts and Sci., June, 1903. 



Apparatus : four glasses superposed upon a U-tube ; Cd elec- 

 trodes ; parchment diaphragms. 



A solution of green chromium sulphate saturated with chro- 

 mic hydroxide was placed in the middle vessel while the four 

 other vessels were filled with a solution of cadmium sulphate. 

 No chromium was moved towards the anode; ii = .26 — if the 

 cation containing chromium is divalent, n = .63 — if monovalent. 

 The possibility of the presence of a colloid is not discussed. 



1904. 0. F. Tower. 



Transport number of Sulphuric Acid. Jour. Am^ Chem. Soc, ^6, 1038. 

 Jour, de chim. physique, j, i. [Abs. W.L.M.] 



Apparatus : two U-tubes with side apertures connected by 

 rubber tubing, 40 cm. long and 3 cm. diameter; in a smaller 

 apparatus (S.A.) the diameter was 2 cm. Anode, Cd ; cathode, 

 Pt spiral. Average current 0.07 amp, in a few cases twice as 

 much. Duration of electrolysis, 2-3 hours. After electrolysis 

 the solution was analyzed in 5 portions ; in every case the com- 

 position of the middle portion remained constant within the error 

 Proc. Wash. Acad. Sci., July, 1907. 



