"■{ ?. 



CHINOLINE AND ITS HOMOLOGUES. 401 



7' 921 grains platinochloride of cryptidine, after treatment with nitric 

 j J acid, &c, dried at 212°, gave 



N 10-603 ... carbonic acid, and 

 2-453 . . . water. 



108 ... platinochloride of cryptidine, same as last, gave 

 392 ... platinum. 



Carbon, 



Hydrogen, 



Nitrogen, 



Chlorine, 



Platinum, 



100-00 



A very perceptible increase in the carbon is, therefore, obtained by the remo- 

 val of the impurity rendered insoluble by means of nitric acid. 



Chinoline is, therefore, the first of a series of homologous nitryl bases, of 

 which three members are now known, viz. : — 



Chinoline, . . C 18 H 7 N 



Lepidine, . . C 20 H g N 



Cryptidine, . . C 22 H u N 



And of which a greater number might possibly be obtained by an extension of 

 the inquiry. 



I. & II. 



Calculation 



36-51 



36-31 



3 44 



3-30 





3-85 





29-30 



27-25 



27*24 



VOL. XXI. PART III. 5 q 



