( 103 ) 



TABLE I. 



Volumes behveen the marks. 



Each of the bulbs Eb, (I, II, III, IV and V of fig. 1 PI. I Comm. 

 N". ill) was calibrated twice, the auxiliary bulb Eb^ (cf. PI. I Comm. 

 N". 84) and the connecting neck Eb^ were each calibrated four times. 

 The foregoing table contains the old and the new calibrations all of 

 which are reduced to 20" C. From the excellent correspondence 

 obtained, it appears that the screen-method is quite reliable, for the 

 positions of the screens on the connecting necks have not altered in 

 any way since Comm. N". 84 (1902). At the same time it is evident 

 that the volumenometer is capable of determining volumes accurately 



2) This was not calibrated in 1902. 



