406 THE VISCOSITY OF SOLUTIONS. 



combination of solvent with solute, but, if such combination takes place, one might 

 expect that the viscosity of water and of a solution of potassium chlorate would be 

 altered to an appreciably different extent by addition of an indifferent solute, which 

 also enters into combination with the solvent. 



We are at present engaged in an investigation of the comparative effect of certain 

 solutes on the viscosity of different solvents, the comparison being made on the basis 

 of the number of molecules of the solute per volume of solution, and of the number of 

 molecules of the solute to molecules of solvent. In this way it is hoped some light 

 may be thrown on the nature of the effect of solute on solvent, and the alteration 

 of the effect with the nature of the solvent. 



Chemistry Laboratory, 



University of Edinburgh. 



