12 AUT. 5. — T. HIRATA : ON THE VISCOSITY 



I found in this case, that when the constants Ä and B 

 were calculated from the observed viscosities by the formula, 



the values of Ä and B thus obtained were nearly equal to the 

 constants which we had found when only one substance was 

 used ; and on calculating z using the latter constants, it was 

 found that the observed and the calculated values did not differ 

 by more than one per cent. This is shown in the following 

 tables ; the constants used are all those found before. The limits, 

 within which the above relations hold good, and noted in the 

 right hand column of the above table, are the maximum con- 

 centrations of the two dissolved substances taken together and 

 expressed in volume percentage. The maximum volume percent- 

 age of each of the tw^o dissolved substances is one-half of the 

 above limits. 



Carbon bisulphide and Ethyl ether. 



Carbon bisulphide: y4 =0.9888. 

 Ethyl ether: 5 = 0.9840. 



