40 Conductivities and Viscosities in Pure and in Mixed Solvents. 



4. Solvated salts show larger percentage temperature coefficients of 

 conductivity than non-solvated salts. 



5. The order of magnitude of percentage temperature coefficients 

 of conductivity is approximately proportional to the viscosity of the 

 solutions. 



6. Formamid is the first of the pure solvents studied with reference 

 to the viscosity of solutions, in which none of the salts used produces 

 negative viscosity. A satisfactory explanation of the above fact is 

 apparent, if the very large association factor of the solvent is considered 

 in connection with the theory of Jones and Veazey. 



7. In regard to conductivity, dissociation and effect on viscosity 

 of solvent, caesium salts are very closely allied to rubidium salts. 



8. Mercuric chloride is more dissociated in formamid than in water. 



