374 MR. P. 0. PEDERSEN ON THK SURFACE-TENSION OK LIQUIDS 



TABLE VIII. 



In Table VIII. are given the mean values of T u corresponding to each aperture. It 

 is evident that the orifices I. and II. have too great amplitudes. For the orifice III. 

 it cannot with certainty be determined on the basis of Table VIII. ; if the amplitude 

 has any influence on the period it can only be said that the influence must be small. 

 The amplitude for the next orifice, VII., is only one-fifth of that of orifice III., and 

 there can therefore be no doubt that the amplitude of orifice VII. is sufficiently 

 minute. That is still more certain for the orifices IV. and V. In Table VIII. is also 

 inserted the mean value of T 16 for holes VII., IV., and V. taken together. This mean 

 value is 74'34. The fourth column contains the values of 74'34 T 16 and the fifth 



7 J. -^ A. T 1 



column contains the values of ' ^ - for the orifices I., II., and III. Finally in 



the last column the values of 0'02 . S 2 are given for all the orifices. The numbers in 

 the last two columns must naturally be taken with all possible reserve, but still they 

 serve to explain, and at the same time also prove, the correctness of the above result, 

 namely, that the amplitudes for holes VII., IV., and V. are so small that their values 

 have no appreciable influence on the determination of the surface-tension. 



Reference has only been made in the above to the amplitude of the aperture and 



TABLE IX. 



