132 DR ANDERSON ON THE CONSTITUTION AND PROPERTIES OF PICOLINE, 
The crystals of this salt, after washing with alcohol and ether, and drying 
at 212°, gave the following results of analysis :— 
10°032 grains of chloride of platinum and picoline gave 
8862  ... carbonic acid, and 
2°760 --- water. 
The determination of the platinum, as formerly mentioned, gave in two dif- 
ferent trials 32°544 and 32°522 per cent., the mean of which is 32°533. The 
analysis corresponds with the formula C,H, N, HCl, Pt Cl. 


Theory. Experiment. 
Cy = 900°0 : 24:07 : 24-09 
H, = 100-0 : 2°67 . 3°05 
Ni. = pred ae : 4:73 : ts 
Cl =18804 . e899  . ol 
Pt’ = 1238270 32°94 - 32°533 
3739°4 100-00 
Chloride of Picoline and Mercury.—When picoline is added to a concentrated 
solution of bichloride of mercury, a white curdy precipitate immediately falls. 
If, however, the solution be dilute, it is not precipitated for some time, and then 
appears in the form of radiated silky needles. It is sparingly soluble in cold 
water, more readily in hot. It dissolves pretty abundantly in boiling alcohol, 
and the solution, on cooling, deposits it, sometimes in prismatic, sometimes in 
feathery crystals. It dissolves readily in dilute hydrochloric acid, with the for- 
mation of a peculiar compound which I have not particularly examined. Boiled 
with water it is decomposed, picoline being evolved, and a white powder being 
deposited. 
In the analysis of this compound I interposed, between the combustion tube 
and the chloride of calcium apparatus, a small tube in which the mercury and 
water were condensed, and at the conclusion of the process, a current of dry air, 
heated to 212°, was drawn through the tube, by means of which the water was 
conveyed into the chloride of calcium apparatus. The salt was dried simply by 
exposure to the air, as it loses picoline when heated ; when analysed it still smelt 
of picoline, which accounts for the excess of carbon obtained. 
The following are the results of the analysis :— 
10.962 grains chloride of mercury and picoline gave 
8:245 ... carbonic acid, 
2°168 =... water. 
This corresponds to the formula C,,H,N+Hg Cl, which gives the following 
results :— 
Theory. Experiment. 
Cy = 900:0 : 19-63 , 20°51 
Heyy). 8 ; 1-90 ; 2°19 
NY 0 : 3°86 : ty 
Cl, = 887:0 : 19°35 a 
Hg = 2531°6 é 55:26 sus 


4583°1 100-00 
