86 URANIUM, ANTIMONY, CHROMIUM, &c. 



the original weight of the sulphuret of titanium, 

 we obtain 0%51543 for the titanium in the com- 

 pound. Hence, its constituents must be 



Titanium 51-543 or 4-254? 

 Sulphur 48-457 - 4 



100-000 



4 representing the weight of two atoms of sul. 

 phur, it follows from this experiment that the 

 compound is a bisulphuret, and that an atom of 

 titanium weighs 4 '2547. 



But the titanic acid from 1*000 of sulphuret 

 of titanium was 0'7443 ; which, as appears from 

 the preceding calculations, contained 0*51543 of 

 titanium. Hence, titanic acid must be a com- 

 pound of 



Titanium 0-5154 or 4-5035 

 Oxygen 0-2289 - 2 



0-7443 



2 representing the weight of two atoms of oxy- 

 gen, 4%5035 must represent the weight of an 

 atom of titanium. 



Thus, from the analysis of bisulphuret of ti- 

 tanium by Rose, we have obtained two different 

 atomic weights of titanium, namely 4-25 and 

 4%5. I am disposed to consider the weight de- 

 rived from the sulphur found by experiment, to 

 be nearest the truth, as it is not absolutely cer- 

 tain that the whole titanium was converted into 



