TITANIUM. 91 



titanic acid with carbonate of soda or carbonate 

 of potash ; to dissolve the fused mass in water, 

 and pass the whole through a filter. The com- 

 pound of titanic acid and the alkali remained on 

 the filter ; it was washed and dried in the open 

 air. Being heated to redness to drive off the 

 water, the loss of weight was noted, and the ex- 

 cess of the weight of the anhydrous salt above 

 that of the titanic acid was considered as the al- 

 kali. 



The mean of two experiments conducted in 

 this way gives the constituents of titaniate of soda 

 as follows : 



Titanic acid 75-10 or 1Q-737 

 Soda . 15-22 - 4 

 Water . 9-68 - 2-544 



100-00 



It would seem from this to be a compound of 

 3 atoms titanic acid, 1 atom soda, and 2 atoms 

 water. If we consider the atomic weight of 

 titanic acid to be 6, then the true constitution of 

 the salt will be 



3 atoms titanic acid . 1 8 



1 atom soda . . 4 



2 atoms water . . 2-25 



24-25 



But the atomic weight of titanic acid will be (if 



