PRODUCED BY DISTILLATION OF CINCHONINE. 319 
num salt. After proceeding in this manner, a fine crop of crystals was obtained, 
which, on combustion with chromate of lead, gave the annexed numbers :— 
t 
. 9-046 grains of platinum salt from fraction boiling between 380° and 390°F. (193°-198°C.), 
after treatment with nitric acid (ninth rectification), gave 
9-805 carbonic acid and 
2-900 water. 
5-110 grains of platinochloride of collidine, same as last, gave 
1:525 platinum. 
corresponding to 
Experiment. Calculation. 
—_—__—_— 
Carbon, 29°56 29°33 C,, 96 
Hydrogen, 3°56 3°66 Hy, 12 
Nitrogen, ck 4:31 N 14 
Chlorine, aie 32°54 Cl, 106°5 
Platinum, 29-84 30°16 Pt 98°7 
100-00 327-2 
The numbers obtained in the analyses of the platinum salt of collidine from 
_ Dippel’s oil, is in the following table compared with those given above and the 
theoretical ones. 
Dippel’s Oil, 
Dr ANDERSON. 
GREV. WILLIAMS, 
from Cinchonine. 
I. IL. U5 Il. Itt. Theory. 
Carbon, 28-77 29:00 29:04 29°56 29°38 
Hydrogen, . 3°57 3°63 3°54 3:56 3-66 
Nitrogen, me is as 4°31 
Chlorine, ai% ore 35 we waa 32°54 
Platinum, 30°33 30°03 29-97 29-80 30-2 30:16 
100-00 
' & The collidine thus obtained, treated in the usual manner with iodide of me- 
| _ thyl, yields a finely crystallized hydriodate of the ammonium base, although the 
reaction is less energetic than in the case of lutidine. 
Chinoline.—In examining the fractions at temperatures above those already 
described, it appeared that the series which then presented itself was not homo- 
| _ logous with that of which lutidine and collidine are members. In fact, about 
| __- 400° F. (204° C.) the proportion of hydrogen in the platinum salts began to lower 
so rapidly, that it was evident that the chinoline of Geruarpr was the next base. 
| In the course of the rectifications, the relative positions of the bases undergo 
_ considerable changes, for while, in the eighth rectification, the portion of fluid 
| boiling about 420° F. contained some lepidine (the 20 carbon base, to be de- 
scribed further on), after four more distillations, it had gone higher up, and 
_ hearer to its correct boiling point, and then the position in the series of frac- 
tions formerly occupied by a mixture of chinoline and lepidine became held 
entirely by the former. 
