Tension of Soap Solutions for Different Concentrations. 669 



Table III. 



Sodium Oleate Solution : with capillary tube with an 



elliptical bore. 



2a = 0-0255. 26 = 0-0178 cm. 



Concentration. 



Height (corrected). 



Surface Tension. 

 (Dynes per cm.) 



1 



Saturated 







solution. 



4-658 cm. 



22-57 



0-5 of 



4-707 „ 



22-70 



0-33 



4-74 ,. 



22 88 



0-25 



4-783 „ 



23-00 



0-17 



4-917 ., 



23-63 



0-090 



4-908 „ 



25-57 



0-062 



4-999 ., 



23-93 



0-048 



5-080 ., 



24-38 



0-038 



5-182 „ 



24-83 



0-032 



5-048 „ 



24-23 



0-028 



5-000 „ 



2400 



Table IV. 



Castyl Soap Solution : by a capillary tube with an 

 elliptical bore. 



Concentration. 



Height (corrected). 



Surface Tension. 

 (Dynes per cm.) 



Saturated 







solution. 



5-038 cm. 



24-27 



05 of 



4-949 „ 



23-85 



0-33 



4-894 „ 



2359 



0-25 



4-906 „ 



23-64 



0-17 



4-874 „ 



23-49 



0-090 



4-873 „ 



23-49 



0062 



4-964 „ 



2392 



0-048 



4-934 „ 



23-78 



0-038 



4923 „ 



23-73 



0-032 



4-894 „ 



23-59 



Table V. 



Castyl Soap Solution : by different capillary tubes 

 with circular bore. 



Diameter of Bore, 

 (cm.) 



Corrected Height, 

 (cm.) 



Surface Tension. 

 (Dynes per cm.) 



0-029 

 0-020 

 0-0320 



3-398 

 4-796 

 3164 



24-10 

 23-49 

 24-70 



