DESTRUCTIVE DISTILLATION OF ANIMAL SUBSTANCES. 220 



{6 1 110 grains of hydriodate of ethylopyridine gave 

 8-105 ... carbonic acid, and 

 2-525 ... water. 



( 5-445 grains of hydriodate of ethylopyridine gave 

 15-395 ... iodide of silver. 



Carbon, 

 Hydrogen, 

 Nitrogen, 

 Iodine, 



Experiment. 



Calculation. 





36-17 



35-89 



C u 



84 



4-59 



4-27 



H 10 



10 



5-70 



6-04 



N 



14 



53-54 



53-80 



I 



126 



100-00 100-00 234 



The formula of the substance therefore is C u H 10 N I. 



Ethylopyridine itself may be separated from the salt by the action of oxide 

 of silver. It forms a highly alkaline fluid, which undergoes decomposition when 

 heated, with the evolution of a base which is no doubt ethylamine, and agrees com- 

 pletely with it in properties, though the small scale on which the experiment was 

 performed prevented my establishing this fact by analysis. It unites with acids, 

 and forms salts, which are all crystallizable, and generally highly soluble. The 

 platinum and gold salts are extremely beautiful compounds. 



Platinochloride of Ethylopyridine. — This salt was prepared in the same man- 

 ner as the corresponding ethylopicoline compound. It is sparingly soluble in 

 cold water, and insoluble in a mixture of alcohol and ether. When slowly formed, 

 it is obtained in beautiful garnet-coloured rhomboidal plates with bevelled edges, 

 which are easily got of a quarter of an inch in diameter, even when operating on 

 very small quantities. Its analysis gave — 



{7"152 grains of ethylopyridine platinum salt gave 

 6-905 ••• carbonic acid, and 

 1-885 ... water. 



f 6*435 grains of ethyl opyridine platinum salt gave 

 \ 2-035 ... platinum. 





Experiment. 



26-33 





Calculation. 





Carbon, 



26-81 



C 14 



84 



Hydrogen, . 



2-92 



3-19 



H 10 



10 



Nitrogen, 





5-56 



N 



14 



Chlorine, 





33-93 



Cl 3 



106-5 



Platinum, 



31-62 



31-51 



Pt 



98-7 



100-00' 313-2 



The formula of the compound is C 14 H 10 N Cl + PtCl 2 . 



The gold compound of ethylopyridine is obtained in fine yellow plates of ex- 

 treme beauty, sparingly soluble in cold water, and readily decomposed in boiling, 

 especially if an excess of chloride of gold be present. They were not analysed. 



