408 Mr. A. Ferguson on the Surface-tensions oj 



-^All figures quoted are in C.G.S. units, and in discussing 

 the average values obtained the surface-tension at a liquid-air 

 surface is called T, that at a liquid-C0 2 surface at the same 

 temperature is called T 4- ST, whilst the effect is exhibited in 



every case by calculating -^ . 



I. Benzene. 

 ^ = •879, p! = '998, # = -9566, r=*02499. 



Gas. 



| 1 



a 1 . 



T (air). 



T (C0 2 ). 



T 17 (air). 



T 17 (CO a ). 



Air... 



184 17% 3-263 



03414 



29-44 





29-51 





;co 2 ... 



18-6 17-6 



3-213 



•03343 





28-82 





28-91 



?Air... 



18-4 17-4 



3-263 



•03414 



2944 





29-50 





co 2 ... 



18-4 176 



3-203 



03329 





28-69 





28-78 



Air ... 



18-4 !l7-4 



3241 



•03381 



29-16 





29-22 





'C0 2 ... 



184 



17'6 



3-201 



•03326 1 





28-70 





28-79 



Air ... 



18-4 



17-4 



3-249 



•03394 1 



2927 





29-33 





C0 2 ... 



18-4 



17-5 



3-207 



•03334 j 





28-75 





28-82 



Air ... 



18-4 



17-4 



3-245 



•03388: 



29-21 





29-27 





Mean T 17 benzene-air = 29-37^. 

 Mean T 17 benzene-C0 2 = 28*83^. 



"■' * cm. 



^=-•0184. 



II. Chloroform. 

 j o' = l-495, r = *02499, # = '9566. 



Gas. 



X . 



e. 



K 



cr. 



T (air). 



T(C0 2 ). 



T„ (air). 



T i7 (C0 2 ). 



Air ... 



o 

 18-2 



o 

 176 



3-715 



•01883 



27-63 





27-80 





C0 2 ... 



18-4 



17-3 



3-672 



•01846 





27-08 





27-16 



Air... 



18-6 



17-2 



3726 



•01891 



27-74 





27-80 





COo... 



18-5 



17-2 



3677 



•01850 





27-14 





27-20 



Air... 



18-6 



16-9 



3-729 



•01894 



27-78 





27-75 





C0 2 ... 



18-6 



171 



3-682 



•01855 





27-20 





27-23 



Air.. 



18-6 



16-8 



3-735 



•01899 



27-86 





27-80 





C0 2 ... 



18-6 



17-1 



3-682 



•01855 





27-20 





2723 



Air ... 



18-6 



169 



3732 



01896 



27-82 





27-79 





CO,... 



186 



17-0 



3-687 



•01859 





27-27 





27-27 



Air... 



18-8 



16-9 



3-732 



•01896 



27-82 





27-79' 





Mean T 17 chloroform-air =27*79 

 Mean T 17 chloroform-CO, = 27*22 



ST 



dynes 

 cm. 



dynes 



cm. 



= -•0205. 



