PLATINUM. 



331 



PL 

 .2769 

 .3269 

 .3611 

 .6159 

 .3668 



.4899 

 1.1427 



3250 

 .6591 

 .6940 



.4705 

 .6316 

 .8245 



I-3329 

 .4210 

 5594 

 5751 



Per cent. PL 

 27.426 

 27.390 



27-393 

 27.402 



27-45* 

 27.431 

 27.441 

 27.460 

 27.459 

 27.438 



27-439 

 27-444 

 27.435 

 27.430 



27.449 

 27-457 

 27.465 



II. By Electrolysis. 



.4272 27.409 



.4397 27.392 



.8569 27.439 



.3180 27.386 



.7081 27.427 



.2809 27.456 



.4591 27.418 



.4591 27.418 



4397 27.392 



Mean of all thirty-two experiments, 27.429, .0027 



With potassium platinbromide Halberstadt found as follows : 



f 2.5549 

 | 2.6323 



j 2.93 '5 



3-4463 



1^4.0081 



3-9554 

 2.0794 



2.1735 

 2.3099 



1.4085 

 2.6166 

 2.6729 



PL 



.6630 

 .6831 

 .7598 

 .8939 

 1.0404 

 1.0266 

 .5388 



.5635 

 .5986 



3645 

 .6772 



.6923 



/. By Reduction in H. 



2 KBr. 



.8071 

 .8318 



.9259 

 1.0895 

 1-2653 

 1.2495 



.6558 

 .6849 

 .7297 



.4446 

 .8279 

 .8469 



Per cent. PL Per cent. KBr. 



25.940 

 25.947 

 25.910 

 25-938 

 25.957 

 25.954 

 25.911 

 25.926 

 25.914 

 25.880 

 25.881 

 25.900 



3L590 

 31-599 

 31-584 

 3L6I3 

 31.568 



31-589 

 3L538 

 31.5" 

 3L590 



3L565 

 31.640 

 31.684 



