SOME NEW BASES OF THE LEUCOLINE SERIES. 567 
platinate prepared in exactly the same manner as in the preparation of chloro- 
platinate from fraction 290°-295'—viz., by adding platinum chloride to the 
solution of the base cooled down in freezing mixture, collecting the precipitate 
on a filter, washing with water, then with alcohol and ether, and drying at 100° C. 
Analysis of Chloro-Platinate from Fraction 270°-275°. 
I. 0°2493 grms, salt gave 
0:0652 ,, platinum = 26:19 per cent. platinum. 
II. 0:2188 ,, salt gave 
O0571,-, platinum == 26:09) —, = 
” Tit. O24, salt gave 
03265 ,, platinum = 26°22 ,, Zs 
IV. 02695 ,, salt gave 
Osifoo)";, ° COs wot, 4 carbon. 
Oityo THEO Son 3 hydrogen. 
Ve “O76 YI salt gave 
O2445,. CO, Oi Ons carbon. 
O04, an lO Se hydrogen. 
These results confirmed the belief, that as the base C,,H,;N was found in 
fraction 290°-295°, so would the base C,,.H,;N be found in this fraction, and not 
eryptidine ; the chloro-platinate of cryptidine, 2C,,H,,NHCl1, PtCl,, has the 
composition— 
Carbon, : 3 : 36°36 
Hydrogen, ‘ : : 3°30 
Platinum, : ; ‘ 27-12 
Chlorine, : , A 29°31 
Nitrogen, : ; : 3°85 
whilst 2C,,H,,NHCI1, PtCl,, the chloro-platinate of the base C,,H,,N, has the 
composition— 
Carbon, ; ; : 38:19 
Hydrogen, : ; d 3°72 
Platinum, : f : 26°12 
Chlorine, : : ‘ 28°24 
Nitrogen, ; 3°73 
with which the above analyses agree. 
