WILLIAM D. HARKINS 175 



M 

 the volume of liquid (F) upheld by the ring. V= — , or the volume of liquid is equal 



to the weight given by the balance, divided by the density of the liquid. 



4. After finding the value of ..j on the A'-axis, find a point on one of the curves 



TABLE VIII 



Drop-Weight Surf ace-Tension Corrections (Factor for Multiplication = F), 

 Based on the Value 72. 75 as the Surface Tension of Water at 20° C. 



I F 



(°o) 0.159 



5000 .0 172 



250.0 198 



58.1 215 



24.6 22561 



17 -1 23051 



13-28 23522 



10 . 29 23976 



8 . 190 24398 



6.662 24786 



5S22 2513s 



4653 25419 



3-975 25661 



3-433 25874 



2 . 995 26065 



2.637 26224 



2.3414 26350 



2.0929 26452 



1 . 8839 26522 



1 . 7062 26562 



I -5545 26566 



1-4235 26544 



1-3096 26495 



1 .2109 26407 



1. 1 24 ' 26324 



1.048 2617 



o . 980 2602 



.912 2585 



0.865 0.2570 



•n 



which has the same value of x. To do this it is necessary to know — . Curves are 



given for values of — equal to 29.5, 40.2, 59.1, and 78.5. If the ring corresponds to 



some other value of this ratio, it is necessary to interpolate. 



If the correction factor F is not used, the results will in general be worthless, since 

 they are not even relatively correct, as may be seen from the high curvature of the 

 correction curves. 



