744 
Proceedings of the Royal Society of Edinburgh. [Sess. 
Table VI. — Ratios obtained from the Analysis of Ammonium Chloroplatinate. 
Comparison of Platinum and Ammonium Chloroplatinate with Silver and 
Silver Chloride. 
Experiment. 
60 
O 
7 w 
£5- 
«-t— i 
o o 
tfl CO 
-+n 
M ^H 
c3 c3 
Ph Ph 
Atomic Weight 
of Platinum. 
Parts of Pt = 100-00 
parts of 6AgCl. 
Atomic Weight 
of Platinum. 
o 
o 
z 3 o 
Pa co 
yi i 
T}' # 
£ o 
w-o <1 
a? o 
Ph 
Atomic Weight 
of Platinum. 
Parts of Pt = 100-00 
parts of 6Ag. 
Atomic Weight 
of Platinum. 
CC 
72 o 
Ph m 
"Pi ^ 
l-rT 03 
M Ph bjo 
ZD 
«+H ^ 
° 8 
S ii 
Ph 
Atomic Weight 
of Platinum. 
13 
78-457 
19522 
22-695 
195-18 
5P621 
195-12 
30-165 
195-25 
68-613 
195-29 
14 
78-424 
195-14 
22-699 
195-22 
51-643 
195-31 
30-147 
195-14 
68-588 
195-13 
15 
78-457 
195-28 
22-703 
195-25 
51-640 
195-29 
30-165 
195-25 
68-613 
195-29 
16 
78-471 
195-26 
22-698 
195-21 
51-623 
195T4 
30-167 
195-27 
68-611 
195-28 
17 
78-428 
195-15 
22-699 
195-22 
51-641 
195-29 
30-152 
195-17 
68-597 
195-19 
Average 
78-447 
195-21 
22-699 
195-22 
51-634 
195-23 
30-159 
195-22 
68-604 
195-24 
Table VII. — Results of the Analysis of Ammonium Bromoplatinate. 
Experi- 
ment. 
Sample 
of Silver 
used. 
Weight of 
(NH 4 ) 2 PtBr 6 
in vacuum. 
Weight of 
Pt in 
vacuum. 
Weight of 
6AgBr in 
vacuum. 
Weight of 
6Ag in 
vacuum. 
19 
I. 
1-83860 
0-50497 
2-91430 
1 -67448 
20 
II. 
2-31057 
0-63437 
3*66269 
2T0379 
21 
55 
2-33965 
0-64272 
3-70900 
2-13049 
Table VIII. — Ratios obtained from the Analysis of Ammonium Bromoplatinate. 
Comparison of Platinum and Ammonium Bromoplatinate with Silver and 
Silver Bromide. 
Experiment. 
O o 
O 
© PQ 
o pzt 
H -t- 
II ffi 
HH> JZ 
PH C7 
CM e+H 
o o 
CO co 
H-H 
Sh b 
Cl 
Ph Oh 
Atomic Weight 
of Platinum. 
Parts of Pt= 100-00 
parts of 6AgBr. 
Atomic Weight 
of Platinum. 
o 
?H 
co 
72 o 
Ph co 
^ rrt 
a 
o§ S 
cn 
3 I' 
Ph 
Atomic Weight 
of Platinum. 
Parts of Pt- 100-00 
parts of 6Ag. 
Atomic Weight 
of Platinum. 
o 
pp ‘p 
72 o 
Ph co 
Z— “N t-* 
Jz; o<ti 
co 
*4-4 O 
° 8 
A rH 
7 II 
Ph 
Atomic Weight 
of Platinum. 
19 
37-865 
195-23 
17*327 
195-25 
63-089 
195-28 
30T57 
195-20 
109-801 
195T3 
20 
37-846 
195T3 
17-320 
195-16 
63-084 
195-23 
30-154 
195T8 
109-829 
195-30 
21 
37-876 
195-29 
17-329 
195-26 
63-080 
195-19 
30-168 
195-27 
109-817 
195-22 
Average 
37-862 
195*25 
17-325 
195-22 
63-084 
195-23 
30-160 
195-21 
109-819 
195-22 
