146 On the Viscosities of Mixtures and of Solutions. 



Liquids. 



Values of m. 



In Temperature 

 Variation Formula. 



In Mixture 

 Formula. 



Carbon Tetrachloride and Benzine 



•58* 

 •67 1 

 •68 

 •68 



•50 + 

 •12 § 

 •45 || 

 •66 || 



•64* 



•64 



•64 



•23 



•61 



•65 



•65 



•65 



•49 

 •50 

 •50 

 •11 

 •30 

 •22 & -25 

 •50 

 3-0 to -'25 



Ethyl Ether and Benzine 



Ethyl Ether and Alcohol , 



Ethyl Benzoate and Toluene 



Glycerine and Water 



40-per-cent. Sugar solution and water. 

 20-per-cent. NaOl solution and water... 



* The numbers in these two columns, with the exception of those for nitro- 

 benzine, ethyl benzoate, and glycerine, are taken from Thorpe and Rodger's papers. 



t Calculated from observations of Pribram and Handl, Wien. Ber. II. Ixxviii. 

 p. 113. 



+ Calculated from observations of Rellstab, Inaug. Diss. Bonn, 1868. 



§ Calculated from Schottner's values, I. c. 

 T [| Calculated from Hosking's values, I. c. The agreement between observed 

 and calculated values may be seen from the following tables : — 

 40-per cent. Sugar Solution. 





Viscosity. 



Temperature 











Observed. 



Calculated. 



0°C. 



•148 



•148 



10 



•895 



•903 



20 



•607 



•605 



30 



•423 



•430 



40 



•313 



•320 



50 



•241 



•247 



60 



•191 



•195 



70 



•155 



•158 



80 



•129 



•130 



90 



•109 



•109 



20-e 



er cent. !NaCl Solution. 







•0267 



•0267 



10 



197 



197 



20 



154 



153 



30 



124 



123 



40 



102 



102 



50 



87 



86 



60 



74 



74 



70 



65 



65 



80 



57 



57 



90 



51 



51 



