INDIUM. 183 



ditional experiment, the third as given below, was made after the method 

 of Reich and Richter. The third column gives the percentage of In in 



In 2 3 : 



1.124 g rm - J n gave 1.3616 grm. In 2 O 3 . Per cent., 82.550 



1.015 " 1.2291 " " 82.581 



.6376 " .7725 82.537 



These figures were confirmed by a single experiment of Bunsen's,* 

 published simultaneously with the specific heat determinations which 

 showed that the oxide of indium was In 2 3 , and not InO, as had been 

 previously supposed : 



1.0592 grm. In gave 1.2825 grm. In 2 O 3 . Per cent. In, 82.589 



For convenience we may add this figure in with Winkler's series, which 

 gives us a mean percentage of In in In 2 s of 82.564, .0082. Hence, if 

 = 15.879, .0003, In = 112.787, .0542. 



Combining both values, we have 



From gold series In = 113.179, =b .0517 



From oxide series '. (( = 112.787, .0542 



General mean In = 1 12.992, .0374 



If = 16, In = 113.853. 



* Poggend. Annal., 141, 28. 



