36 URANIUM, ANTIMONY, CHROMIUM, &c. 



Peroxide of uranium 1-8668 

 Oxalic acid . 0*4502 



Water . . 0-3530 



2-6700 



Now, this is equivalent to 



RESULT OF EXPERIMENT. 



li atom oxalic acid . 6-75 675 



1 atom peroxide of uranium 28 27'925 



2 atoms water . 2-8125 2-8428 



37-5625 



Thus, the result of this analysis corresponds also 

 exceedingly nearly with mine. The atom of 

 peroxide from this salt falls short of 28 a very 

 little ; while the number from the muriate gave 

 a result a little higher than 28. 



(4.) Berzelius likewise formed uraniate of 

 barytes by precipitating a solution of pernitrate 

 of uranium with barytes water, and boiling the 

 precipitate in water till all the soluble barytes 

 was removed. 2*128 grammes of this uraniate 

 previously heated to redness gave 0*451 of ba- 

 rytes, and 1*677 of peroxide of uranium. These 

 determinations are merely given by Berzelius, 

 without stating the weight of the sulphate of 

 barytes and protoxide of uranium, from which 

 they were derived. This puts it out of my 

 power to apply any correction to them. Ac- 

 cording to this statement, uraniate of barytes is 

 composed of 



