390 MR ©. G. WILLIAMS’ RESEARCHES ON 
ten minutes to 212°, combination is perfectly effected, a finely crystallized hy- 
driodate resulting. If this salt, which is perhaps more correctly called iodide of 
methyl-chinoline-ammonium, is treated in the cold with excess of oxide of silver, 
a strongly alkaline solution is obtained, containing the hydrated oxide of the am- 
monium base. The solution possesses little stability; on heating with potash, 
an excessively pungent odour is evolved, acting strongly on the eyes and mucous 
membrane of the nose. The solution reddens turmeric paper as powerfully as 
solution of caustic potash, and instantly restores the colour of reddened litmus. 
The reactions of this base, generally, are the same as those of the ethyl compound 
next to be described. The smell of a volatile base, a product of the decomposi- 
tion of methyl-chinoline, is evolved from the moment of its formation; it appears 
to be methylamine. 
By alternate precipitation of the hydriodate by nitrate of silver, hydrochloric 
acid, and bichloride of platinum, after removal of the chloride of silver, a sparingly 
soluble platinum salt was obtained. The following is the result of its ana- 
lysis :— 
8-930 Bid of platinochloride of methyl-chinoline, gave 
I. < 11:350 carbonic acid, and 
2-496 .,, water. 
8515... _ platinochloride of methyl-chinoline gave 
10:777 ~~... ~~ carbonic acid, and 
2303 ... water. 
7:861 ... _ platinochloride of methyl-chinoline gave 
2217 ~~... ~—~platinum, 
5165...  platinochloride of methyl-chinoline gave 
1456 ... platinum. 
Experiment. Mean. Calculation. 
—— ee 
I. IL. Til. Ty. 
Carbon, 34:66 34:52 as oe 34°59 34:33 Cy t20 
Hydrogen, 3:11 3°00 ae “00 3:06 2°86 ne 10 
Nitrogen, 500 “ee pale “AA “ice 4:01 N 14 
Chlorine, se sah ae aan Sor 30-47 Cl, 106-5 
Platinum, wk bas 28°20 28:19 28-20 28:33 Pt 99 
100-00 349°5 
Methyl-chinoline is, therefore, isomeric with lepidine, but has no other point 
of resemblance. The decompositions of the hydriodate almost exactly resemble 
those of the ethyl base, and, as the atomic weight of the latter, being higher, gave 
it an advantage for experiment, I selected it for the purpose. 
Action of Iodide of Ethyl on Chinoline. 
Hydriodate of Ethyl-Chinoline.—No action takes place on the mere addition 
of excess of iodide of ethyl to chinoline, but if the tube containing the mixture be 
sealed and exposed for some hours to a temperature of 212’, the whole becomesa 
