URANIUM, ANTIMONY, CHROMIUM, &c. 



The whole was then washed out of the glass with 

 distilled water, and dissolved in muriatic acid, 

 leaving 2-63 grains of metallic titanium behind ; 

 so that 1*37 grain of the titanium had been 

 converted into titanic acid. This titanic acid 

 was obtained partly by boiling the muriatic so- 

 lution, and partly by mixing the residual liquid 

 with ammonia, evaporating to dryness, and 

 redissolving. The whole titanic acid, after being 

 heated to redness, weighed 2-185 grains ; it was 

 white, but had a shade of brown, indicating the 

 presence of peroxide of iron, which however I 

 did not succeed in separating by means of mu- 

 riatic acid. The retort, in which the titanium 

 had been heated, had lost Ol grain of its weight; 

 deducting this for silica, the true weight of the 

 titanic acid was 2*08,5. And as the weight of 

 the titanium from which it had been formed 

 was 1-37, it is evident that titanic acid is a com- 

 pound of 



Titanium 1-37 or 3-8322 

 Oxygen 0-715 - 2 



2-085 



The result of this experiment gives us 3-8322 

 for the atomic weight of titanium. Though it 

 was repeated again, the result did not differ ma- 

 terially from what has been stated. It is ex- 

 tremely difficult to obtain titanic acid perfectly 

 free from all traces of potash when prepared in 



