from the RIVER DEE. 263 



Titanium, - 41. 1 



Iron, - - 39.4 



Uranium, - 3.4 



Silica and alumina, 20.0 



103.9 



Here, then, is Hill an excefs of nearly 4 per cent. But this I 

 am difpofed to afcribe to the oxides of titanium and uranium, 

 having been only dried upon the fteam-bath. Upon the whole, 

 it appears, that, in the fpecimens of iferine analyfed, the pro- 

 portions of titanium and iron were nearly equal, and that the 

 uranium did not exceed 4 per cent. The appearance of uranium 

 furprifed me a good deal. I perceive, however, that it has al- 

 ready been detected in this ore, from an analyfis publifhed by 

 Profeflor Jameson, in the fecond volume of his Mineralogy, 

 which, I underftand, was made by Lampadius. The fpeci- 

 men examined by Lampadius yielded very nearly 60 parts of 

 titanium, 30 of iron, and 10 of uranium. Whereas, in mine, 

 if the foreign matter be removed, there was obtained, very 

 nearly, - - 48 titanium, 



48 iron, 

 4 uranium, 



IOQ 



But, there can be no doubt, that the iferine which I analyfed 

 was ftill contaminated with a good deal of iron-fand ', for it 

 was impoffible to remove the whole. 



i 3 tb 



