58 Mr. A. M. Worthing ton on Calculating Surface-Tensions 



Air-bubbles in Olive-oil. 

 D = -9136. Temp. 25°-8 C. 



No. 



L. 



I—*. 



1 



1 



b' 



Grams per cm. 



3-282 L 



S. tension 

 (Quincke). 



S. tension, 

 corrected. 



1. 

 2. 

 3. 

 4. 



5. 

 6. 



7. 



cm. 



1-5 



1-7 



1-7 



1-56 



1-56 



1-485 



1-485 



cm. 

 •3001 



•2858 

 •2885 

 •2905 

 •2814 

 •2751 

 •2861 



•2031 

 •1792 



•1953 



•2052 



•0095 

 •00377 



•00719 



•01041 



•04113 

 •03735 

 •03804 

 •03850 

 •03617 

 •03457 

 •03741 



•03678 

 •03387 

 •03453 

 •03470 

 •03271 

 •03122 

 •03364 



Mean 





•03760 



•03392 









By ca 



pillary 



tubes (temp. 2 



2°) (Quincke). 





•03271 



Air bubbles in Oil of Turpentine. 

 D = -8867. Temp. 25°'l 0. 



No. 



L. 



K-k. 



1 



1 



b' 



Grams per cm. 



3-282 L* 



S. tension 

 (Quincke). 



S. tension, 

 corrected. 



3. 



4. 



cm. 

 1-34 



cm. 

 •2665 



•2659 



I -2274 



•01199 \ 



•03149 

 •03134 



1 '02818 



Mean (of 8 mes 



isures) 



•03033 



•02818 





: 



By capi 



llary tu 



bes (temp. 21 °- 



7) (Quincke) . 





•02765 



(The mean value of K— 7c used in the calculation of r is *2615 cm.) 



