DESTRUCTIVE DISTILLATION OF ANIMAL MATTERS. 



579 



Carbon, 

 Hydrogen, 



Nitrogen, 

 Oxygen, 



And its formula is C 12 H 7 N HO N0 5 . 



Experiment. 





Calculation. 





46-06 



4615 



C 12 



72 



5-23 



5-12 



H 8 



8 





17-96 



N 2 



28 



... 



30-77 



o 6 



48 



100-00 



156 



Products of the Decomposition of Picoline. 



Action of Chlorine on Picoline. — The action of a current of chlorine on pico- 

 line, both dry and dissolved in water, has been already described, and the results 

 were not such as to induce further experiments in this way. But when an excess 

 of picoline is projected into dry chlorine gas, it is rapidly converted into a more 

 or less distinctly crystallized mass, which, when treated with water, leaves a 

 quantity of an amorphous powder of dazzling whiteness. The properties of this 

 substance are so like those of the corresponding pyridine compound, that the same 

 words would almost serve to describe it. It is insoluble in water ; but alcohol dis- 

 solves it easily, and the solution, when boiled, undergoes decomposition ; an ethe- 

 rial odour, not unlike that of hydrochloric ether, and probably due to the forma- 

 tion of that substance, is first produced, and that is followed by a pungent vapour. 

 It is insoluble in the dilute acids, but soluble in concentrated nitric acid. Potash 

 decomposes it in the cold, and more rapidly if heated. Heated on platinum, it 

 gives off a very pungent vapour and leaves a bulky charcoal. It is decomposed 

 when heated in the water bath. The portion used for analysis is dried in vacuo. 

 The results were, — 



{5-550 grains dried in vacuo gave 

 6-170 ... carbonic acid and 

 1-100 ... water. 



f 4-445 grains burnt with lime gave 

 19-265 ... chloride of silver. 



Carbon, 

 Hydrogen, 

 Nitrogen, 

 Chlorine, 



This corresponds very closely with the formula 



H. 



Experiment. 





Calculation. 





30-32 



30-9° 



C 12 



72 



2-20 



214 



H 5 



5 



... 



5-02 



N 



14 



61-54 



60-94 



Oi 



142 



C "* 



°!2 CI. 



} N 



HC1. 



233 



or that of the hydrochlorate of a base produced by the substitution of three 



VOL. XXI. PART rv. 7 r 



