WORK OF M. R. SCHMIDT. 



143 



the concentrated solutions, were due to partial polymerization of the cobalt chloride 

 molecules. This point was tested by Mr. H. R. Kreider. He showed by the boiling- 

 point method that the dissociation of cobalt chloride in ethyl alcohol, for concen- 



Fig. 63. Conductivity of 

 Cobalt Chloride in 

 Glycerol -Water at 



o 



3 



-a 

 C 

 o 



a 



D 



2i 

 o 



Fig. 64. Conductivity of 

 Cobalt Chloride in 

 Glycerol-Ethyl Alco- 

 hol at 25. 



25 50 75 100 



Per cent. Glycerol 



trations ranging near tenth-normal, is apparently negative; or, in other words, the 

 indicated molecular weight is greater than that calculated for CoCl 2 . Some of his 

 results are given here: 



me 8.1 13.0 13.; 



found.... 155 134 131 



M.W.=129 



no f Volume 

 96 lM. W. 



