382 



BULLETIN OF THE UNIVERSITY OF WISCONSIN. 



solved in these nitriles are quite different, as a comparison of 

 the results in the followng table shows. The molecular con- 

 ductivities of silver nitrate in benzonitrile are taken from the 

 work of Lincoln 1 while those for the propionitrile are taken 

 from the work of Dutoit and Friderich. 2 



Table VIII. 



The molecular conductivities of silver nitrate dissolved in 

 pyridine and in butyronitrile furnish another interesting com- 

 parison. 



Table IX. 



Solvent. 



Butyronitrile 3 ) . 



Pyridine 4 ) . 



D. C. 



20.3 



12.4 



While Table VII shows that the Nernst-Thomson rule holds 

 for the three members of the same homologous series, Table 

 VIII demonstrates that chemically analogous substances having 

 about the same dielectric constants may nevertheless yield solu- 

 tions (containing the same solute) with very different electrical 

 conductivities. Table IX shows conclusively that a pyridine 

 solution of silver nitrate conducts better than a corresponding 



1 1. c. pp. 422, 423. 

 2 1. c. pp. 300, 331. 

 8 1. c. pp. 42A 42 i. 

 * 1. c pp. 330, 331. 



