( 378 ) 



absorption which comforms slowlj to the pressure. As to the 

 absorption of the gas in the mercury, its adsorption to the wall 

 and the interchange of gas with a thin layer between the wall and 

 the mercury they (and especially the last) may be left out of account, 

 though they are not rigorously zero. For with manometers, where 

 no influences but these can exert themselves, the pressure of the 

 gas is sometimes considerably raised during a long time, and not- 

 withstanding the variations of the normal volume are much slighter 

 than with the thermometers. 



Consequently we shall rather have to think of a slow dissolving 

 in and evaporating from the layer of glue, which is applied between 

 the steel caps and the glass. 



ERRATA. 



p. 193 1. 1 from top for : deviation, read : value of the deviations. 

 1. 2 from top for: largest deviation, read: of the largest 

 deviations, 

 p. 195 1. 8 from bottom and 1. 2 from bottom for : values read : 



quantities, 

 p. 196 1. 7 from top for : from, read : for. 



1. 9 from top for : and are combined, read : and these 

 are given, 

 p. 198 1. 19 from top for: agree, read: correspond. 



1. 6 from bottom in note, for : calculations, read: calculation 



of the formulae we used. 

 1. 6 from top must be omitted : "are used" 

 p. 211 1. 16 from top for : with, read : containing also. 



(November 22, 1906). 



