254 DR ANDERSON ON THE PRODUCTS OF THE 
jess, and does not become coloured by exposure to the air. It dissolves in water 
in all proportions, and is also readily soluble both in the fixed and volatile oils. 
It dissolves in the concentrated acids, with the evolution of much heat, and the 
formation of highly soluble salts. When bichloride of platinum is added to a 
solution of its hydrochlorate, a double salt is slowly deposited in flattened prisms, 
which are tolerably soluble in boiling water, less so in alcohol, and entirely insoluble 
in ether. When these crystals are boiled for a considerable time in water, they 
appear to undergo decomposition, with the formation of a platinum salt, crystal- 
lizing in golden scales. Two analyses of this salt were made, one upon the sub- 
stance simply precipitated from the hydrochlorate; the other was the same salt 
redissolved in hot water, so as to leave a considerable proportion undissolved. In 
the last analysis the salt was mixed with the chromate of lead when still rather 
hot, and it immediately evolved a strong smell of the base, which accounts for 
the loss of carbon obtained in the experiment. 


8-234 grains of the platinochloride gave 
I. { 6486 ... of carbonic acid, and 
1:705 ... of water. 
( 5-396 grains of the platinochloride gave 
Il. ¢ 4:015 ... of carbonic acid, and 
1:091 ... of water. 
8-138 grains platinochloride gave 2-792 grains platinum. 
4:956 as os 1-703 6h 
Experiment. Calculation. 
_———__ — 
Carbon, : : 21-48 20:29 21:03 Cra 00 
Hydrogen, . A 2°30 2:24 2:10 H, 6 
Nitrogen, ; sca S36 4:93 N 14 
Chlorine, . . sa ee 37°34 Cl, 106° 
Platinum, . 5 34:30 34°56 34:60 Pt 98-7 
100-00 285:2 
The formula C,, H, N, HCl, Pt Cl, agrees very closely with these analyses ; 
and the salt is consequently that of a base having the formula C,, H, N, which 
forms a term of the picoline series. I have not as yet directed further attention 
to this base, as the phenomena observed in the examination of the next base 
served to shew that, notwithstanding the correspondence of the salt with theory, 
much difficulty would be experienced in obtaining the base itself in a state of 
purity. 
Lutidine. 
In the fraction boiling about 310°, a base occurs which possesses precisely the 
constitution of toluidine, and to which I give the name of lutidine. When in the 
distillation of the mixed bases the temperature rises to about 305° to 310°, more 
distinct indications of a fixed boiling point are obtained than at any other tem- 
perature, and the base which distils presents sufficiently distinct characters from 
those obtained at lower points. The product is now much less soluble in water ; 
eT 
