222 DR T. ANDERSON ON THE PRODUCTS OF THE 



and volatile oils. It dissolves with great facility in the acids, but even when added 

 in large excess, it does not neutralize them. It precipitates alumina, chromium* 

 zinc, and peroxide of iron from their solutions, but gives no precipitate with baryta, 

 lime, magnesia, manganese, or nickel. It throws down oxide of lead from the 

 nitrate, but not from the acetate, a remarkable peculiarity, which it shares with 

 methylamine and ethylamine. With corrosive sublimate, it forms a double salt, 

 but from salts of the suboxide of mercury, it throws down the oxide. Its odour 

 is strong, aromatic, and far from unpleasant. Its specific gravity is 0921, and it 

 boils at 354°. The following results were obtained by analysis, — 



{4-075 grains of collidine gave 

 11-800 ... carbonic acid, and 

 3-450 ... water. 



{4-079 grains of collidine, gave 

 11-800 ... carbonic acid, and 

 3-393 ... water. 



{4-124 grains of collidine, gave 

 11.980 ... carbonic acid, and 

 3-560 ... water. 







Experiment. 





Calculation. 







i. 



II. 



in. 







" 



Carbon, 



78-97 



78-89 



79-22 



79-33 



C 13 



96 



Hydrogen, 



9-40 



9-24 



9-58 



9-09 



< 



11 



Nitrogen, 



11-63 



11-87 



11-20 



11-58 



N 



14 



100-00 100-00 100-00 100-00 121 



These numbers correspond with the formula C 15 H n N. Collidine forms, there- 

 fore, another member of the picoline series, and corresponds in constitution 

 with the base described by Cahours, under the name of zylidine, in the aniline 

 series ; with which, however, it is isomeric only, and not identical, its properties 

 being different in all respects. 



The salts of collidine are, for the most part, highly soluble and deliquescent. 

 When evaporated, they form uncrystallizable gummy masses, some of which, on 

 standing, show traces of crystallization. They are soluble also in alcohol, but 

 not in ether. The only highly crystallizable compounds, are the mercury and 

 platinum double salts. 



The mercury double salt is thrown down in the form of a curdy white preci- 

 pitate, on the addition of a solution of corrosive sublimate to a solution of the 

 hydrochlorate of collidine. It dissolves in boiling spirit, and is deposited, on cool- 

 ing, in needles. It could not be obtained of definite composition. 



Platinochloride of Collidine — is obtained, when strong solutions of hydrochlo- 

 rate of collidine and bichloride of platinum are mixed. It is slowly deposited in 

 the form of orange-yellow prisms or needles, according to the degree of concen- 

 tration of the fluids. It is readily soluble in water, but insoluble in alcohol and 

 ether. Its analysis gave the following results, — 



