Tables 170-172. 

 CAPILLARITY. -SURFACE TENSION OF LIQUIDS.* 



TABLE 170. —Water and Alcohol In Oontaot with Air. 



^7Z 



TABLE 172. —Solutions ol Salts in 

 Water, t 



TABLE 171. — Miscellaneous Llanlds in Contact wltb Air. 



* This determination of the capillary constants of liquids has been the subject of many careful experiments, but the 

 results of the different experimenters, and even of the same observer when the method of measurement is clianged, 

 do not aj;ree well together. The values here quoted can only be taken as approximations to the actual values for the 

 liquids in a state of purity in contact with pure air. In the case of water the values given by I.ord Ravleiph from the 

 wave length of ripples (Phil. Mag. 1890) and by Hall from direct measurement of the tension of a flat film (Phil. Mag. 

 1893) have beefl preferred, and the temperature correction has b'-en taken as 0.141 dyne per degree centigrade. The 

 values for alcohol were derived from the experiments of Hall above referred to and the experiments on the effect of 

 temperature made by Timberg (Wied. Ann. vol. 30). 



The authority for a few of the other values given is quoted, but they are for the most part average values derived 

 from a large number of results published by different experimenters. 



\ From Volkmann (Wied. Ann. vol. 17, p. 353). 



For more recent data see especlaUy HarUns, J. Am. Ch. Soc, 39, p. 66, 1917 (336 liquids), and 42, 

 P 702, 2643. 1920. 

 Smithsonian Tablfs- 



