EXPANSION OF SALINE SOLUTIONS. 



209 



tube. The results of the experiments are here put in tabular form. In 

 the first column the formula of the substances in the small test-tubes are 

 given ; in the second, the masses of the substances in grams ; in the third 

 the number of days between the first sealing and the first opening of the 

 enclosing tube ; in the fourth, the quantities of water adhering to the 

 salts at the time of first opening ; and following are pairs of columns 

 giving similar data for the second, third, and fourth times of opening. 

 The quantities of salts and of water are also given in molecules, 100 

 molecules of water being taken as the basis of calculation. The ' period * 

 in each case is the time elapsed from the beginning of the experiment. 



Experiment I. 



Experiment II. 



1886. 



