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: — 



' 9-046 grains of platinum salt from fraction boiling between 380° and 390°F. (1 93°- 1 98°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. 

 29-56 





Calculation. 





Carbon, 



29-33 



C 16 



96 



Hydrogen, . 



3-56 



3-66 



H 12 



12 



Nitrogen, 





4-31 



N 



14 



Chlorine, 





32-54 



C1 3 



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. 







Carbon, 



I. 



28-77 



II. I. 

 29-00 29-04 



II. 

 29-56 



ill. ^ 



Theory. 



29-33 



Hydrogen, . 



Nitrogen, 



Chlorine, 



3-57 



3-63 



3-54 



3-56 





3-66 



4-31 



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 Gerhaedt 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 

 nearer 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. 



