[satterly] 



SURFACE TENSION, ETC. 



89 



Fig. 1 illustrates the results obtained by different observers for 

 the surface tension of water over the range 0° to 100°C. The values 

 differ widely, not only in absolute magnitude but in their temperature 

 coefficients.' 



20 40 



60 80 100 120 I40 160 180^200 220 240 2(>0 280 300^320 340 



TEMPERATURE (°C) 



60 380 



Fig. 2 shows in the same way for a number of liquids the varia- 



tion of surface tension over a wide range of te mperature.^ I have 



^Data from Landolt and Bornstein'? Tables and elsewhere. t>H 



^Weinstein's data for water gives a curve about .6 higher than Ramsay and 



Shields' curve in Fig. 1. In Fig. 2, the curve marked Ether, J. should be Ether, 



Ramsay and Shields. 



