582 PROFESSOR ANDERSON ON THE PRODUCTS OF THE 



it communicates its smeli to that fluid when shaken with it. It dissolves in all 

 proportions in alcohol, ether, the fixed and volatile oils. It has a highly charac- 

 teristic empyreumatic smell, quite distinct from that of picoline, without pungency, 

 and closely resembling that of the bases extracted from the portions of Dippel's 

 oil of very high boiling point, and which not improbably contain it. Its smell 

 adheres pertinaciously to the fingers. It fumes slightly when a rod dipped in 

 hydrochloric acid is brought near it, and restores the blue colour of reddened 

 litmus. Boiled with strong nitric acid, it gives off red fumes, and on dilution 

 with water a small quantity of a resinous matter deposits, but the greater 

 part of the base is separated unchanged on the addition of potash. It gives an 

 emerald-green precipitate with sulphate of copper, which dissolves in hydro- 

 chloric acid, and forms a green solution, containing a double salt. Most of its 

 compounds are uncrystallizable, and readily soluble in water. Its specific 

 gravity is 1077, and it boils between 500° and 600° Fahrenheit, and is partially 

 decomposed. The portions employed for analysis were very carefully distilled 

 for that purpose. Owing to the high boiling point, some difficulty was expe- 

 rienced in the combustion, and it was found convenient to weigh the substance 

 in a small open tube, which was passed into the combustion tube. The results 

 were, — 



(3"060 grains of parapicoline gave 

 8 730 ... carbonic acid and 

 2-158 ... water. 



{3*707 grains of parapicoline gave 

 10-601 ... carbonic acid and 

 2-655 ... water. 



{4 270 grains of parapicoline gave 

 12195 ... carbonic acid and 

 3-072 ;... water. 



Carbon, 



Hydrogen, 



Nitrogen, 





Experiment. 





Calculation. 





I. 



II. 



in. 









77-81 



77'99 



7789 



77-42 



C 12 



72 



7-83 



7-96 



7-99 



7-53 



H 7 



7 



... 







15-05 



N 



14 



10-000 93 



These numbers correspond almost exactly with those of picoline itself, as in- 

 dicated by the calculation. The quantity of carbon in all the analyses is con- 

 siderably above that required by theory ; but it is easy to understand how a 

 small quantity of empyreumatic matters formed during the decomposition may 

 produce this effect ; and itis sufficiently obvious that the base is isomeric with 

 picoline. This is further confirmed by the analysis of its platinum salt, which is 



