CHINOLINE AND ITS HOMOLOGUES. * 383 
HOFMANN. GERHARDT. BROMEIS. GREvy. WILLIAMS. 
Fs ——— Mean. 
Calcul. 
Carbon, . 32:06 Aes 32:99 32:46 32:51 33°31 33:42 33.33 32:26 32°19 
Hydrogen, 2°58 ai 314 314 3:28 2-71 283 2:68 2:76 2°39 
Nitrogen, ... sob 4:42 Ae 3:98 421 4:00 ace 4:17 
Chlorine, 30-96 “Oe Se 31:74 
Platinum, 29:27 29-11 2780 28-08 27:69 28-23 28:34 9881 29:38 99:51 
100-00 
Only the first of these analyses was made from a base extracted from coal-tar ; 
all the others were obtained from chinoline, produced by destructive distillation of 
cinchonine with potash. 
Laurent, by mixing hot alcoholic solutions of hydrochlorate of chinoline and 
bichloride of platinum, obtained, after twenty-four hours, fine yellow needles ; but. 
on examination under the lens, it was found not to be a homogeneous crystalliza- 
tion, for a small quantity of little grains had also deposited.* Ihave not found 
that any observer, except myself, has subjected the bases produced from cincho- 
nine to a systematic fractionation, before forming the platinum salt. The fraction 
analysed by me had been rectified fourteen times, and was nearly constant be- 
tween 460° and 470°. 
Aurochloride of Chinoline—The only account of this beautiful salt I have 
been able to find is in Dr Hormann’s paper, on the bases of coal-tar, where he 
merely states, that it corresponds in colour and other properties with the gold 
salt of aniline, but the latter appears} to be a yellow precipitate which rapidly 
_ becomes brown in the air, and, therefore, differs considerably from the chinoline 
‘salt, which is quite permanent under the same circumstances. As obtained by 
_ me from a specimen of chinoline of considerable purity, it was in the form of 
_ slender canary-yellow needles, sparingly soluble in cold water, and precipitating 
4 instantly on the addition of a solution of terchloride of gold, to a moderately strong 
solution of hydrochlorate of chinoline. 
3883 grains of aurochloride of chinoline dried at 212° gave, on ignition, 
1625 ... of gold. 
or, per cent.— 
Experiment. Theory. 
(C,, H, N, HCl+ Au Cl,) 
41°85 42°00 
Palladiochloride of Chinoline.—Dr Hormann describes this salt in his paper. 
% previously quoted, as resembling that from aniline, but M. Méxiert{ states the 
- latter to be yellow ; 1 found, however, that when moderately concentrated solu- 
4 tions of chloride of palladium and hydrochlorate of chinoline are mixed, a copious 
* GerHarpr, loc. cit., and Laurent, Ann. de Chim. et de Phys. [3] xxx., 368. 
_ { Geruarpz, Traité, tome troisiéme, p. 86. t Ann. der Ch. u. Pharm. Ixxxvi., 368. 
