568 MR G. CARR ROBINSON ON 
He Il. Il. IV. V; 
Carbon, , ; ues aot Bt 37:99 37°78 
Hydrogen, : a - 4:32 4:54 
Platinum, ¢ foci , 2619, 2600 6-02 
In accordance with these views, the next base would be found in fractions ; 
Calculated. 
38:19 
3°72 
26°12 
305°-310° or 310°-315°, therefore this latter was the next one examined. 
Examination of Fraction 310°-315°. 
About 5 grms. of fraction 310°--315° was dissolved in nitric acid, and the 
chloro-platinate prepared just as in case of fractions 270°—-275° and 290°-295". 
Analysis of Chloro-Platinate from Fraction 310°-315". 
I. 0°7385 grms, salt gave 
017475 ,, platinum = 23°66 per cent. platinum. 
II. 0528 » salt gave 
01275 ,, platinum = 2414 * ne 
III. 0:2525 ,, salt gave 
038025 , CO, = 41:07 . carbon. 
0-121 ep eal®) == ls 2 hydrogen. 
IV. 0:2575 ,, salt gave 
0°388  ONOO = 41°08 nf carbon. 
0121 yee) HO aru i; hydrogen. 
These results are in accordance with the opinion stated above, that this” 
fraction, 310°-315°, consisted of the third new base C,,H,,N, the chloro-— 
platinate of which, 2C,,H,,NHC1, PtCl, has the composition— 
Carbon, ; 3 : 41:48 
Hydrogen, ; ‘ , Ate: 
Platinum, : ; , 24:32 
Chlorine, : : : 26:29 
Nitrogen, ‘ ; ; 3°45 
whilst analysis gave— 
I. ; II. III. UN 
Carbon. : : eae eo 41:07 41:08 
Hydrogen, : ae 5a 5:18 5:04 
Platinum, . ‘ 23°56 24:14 
Calculated. 
41:48 
4-44 
24:31 
‘Aw 
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