PRODUCED BY DISTILLATION OF CINCHONINE. 323 



crystalline mass, which on solution in water and re-evaporation becomes lighter 

 in colour. The nitrate in this state cannot be obtained in the form of a dry or 

 pulverulent salt, in consequence of the presence of an impurity which renders it 

 readily fusible at 212°. But if the salt is pressed repeatedly between folds of 

 blotting paper, and then crystallized from alcohol, fine hard prisms are obtained, 

 quite infusible at 212°, and without the slightest tendency to deliquesce. As a 

 little colouring matter was still retained, rendering the salt yellow, the crystals 

 were pulverized and washed with ether, in which they were nearly insoluble ; the 

 purified salt gave, on combustion, the numbers annexed. It should be stated, that 

 the first analysis was made upon a mixture of two crops, the second of which 

 was obtained by evaporating the mother liquor of the first, the second and third 

 analyses were made upon the first crop of crystals. 



{6-840 grains of nitrate of lepidine (mixture of two crops of crystals) gave 

 14-470 ... carbonic acid and 

 3-035 ... water. 



(6 - 855 grains of nitrate of lepidine (first crop of crystals) gave 

 14-680 ... carbonic acid, and 

 3025 ... water. 



( 6-340 grains of nitrate of lepidine (first crop of crystals) gave 

 III. < 13-540 ... carbonic acid, and 

 ( 2-845 ... water. 



Experiment. Calculation. 





I. 



II. 



III. 



Mean. 







"* 



Carbon, 



57-69 



58-40 



58-24 



58-11 



58-25 



C, ft 



120 



Hydrogen, 



4-93 



4-90 



4-98 



4-93 



4-86 



H 10 



10 



Nitrogen, 











13-59 



N, 



28 



Oxygen, 









... 



23-30 



o 6 



48 



100-00 206 



Hydrochlorate of Lepidine. — This salt is obtainable without difficulty in small 

 white needles. The reason that former experimenters found so much time and 

 trouble necessary to obtain crystals, was the presence of the more volatile bases, 

 which, strange to say, yield crystalline salts with far greater difficulty than either 

 chinoline or lepidine. The crystals of hydrochlorate of lepidine are quite infusible 

 at 212°. An analysis gave the following result : — 



7*630 grains of hydrocblorate of lepidine, dried at 212°, gave 

 6-060 ... cbloride of silver. 



giving a percentage of 19-64 of chlorine, being exactly the quantity required for 

 the hydrochlorate of lepidine, as will appear from the annexed comparison with 

 the theoretical percentages. 



Experiment. 



Carbon, 



Hydrogen, . 



Nitrogen, 



Chlorine, . . 19-65 



100-00 179-5 





Calculation. 





66-85 



^20 



120 



5-57 



H 10 



10 



7-80 



N 



14 



19-78 



CI 



35-5 



