10 AET. S. — S. KAWAMÜRA : COAGULATION OF COLLOIDAL 



TABLE 2. 



These numbers sliow clearly that with the concentration of 

 0.001 molar of potassium sulphate the coagulation was complete 

 and the further addition of the electrolyte had no effect. It is 

 also to be noted that the coagulation began at a concentration 

 as low as 0.0005 and was considerable at 0.0007. In this way 

 we get a tolerably good idea of the degree of coagulation effected 

 by different concentrations of the electrolyte. 



4. The Influence of Temperature. 



In order to be able to make generalisations which should 

 hold good over a wide range of temperature we had to study 

 the influence which temperature exercises on the phenomena 

 of coagulation. As a typical electrolyte, potassium sulphate was 

 chosen, and the viscosity was further measured at three different 

 temperatures, viz. 6°, 40°, and 60°. The results obtained are 

 contained in the following tables. 



TABLE 3. 



Temperature = 6°. 



