( 762 ) 



the determination of the normal-volume for series III, the latter com- 

 prises the three series. 



i) The two last determinations Lave been left out of account, though they show 

 but slight deviations, because on account of variations of temperature in the room 

 a certain cause could be assigned for the apparent rise of the normal- volume. 



2 ) A determination of the normal volume was made in this series both before 

 and after, and also between the determinations at high pressure. The value given 

 here is the mean from these three determinations. 



