898 MR C. G. WILLIAMS’ RESEARCHES ON 
Experiment. Mean. Calculation. 
$e ————— 
zr Il. Ill. 1B he AMS 
Carbon, 34:48 Au 34:58 aor hate 34:53 34:33 C,, 120 
Hydrogen, 2:97 a5 311 ae ees 3-04 286 H,, 10 
Nitrogen, ee doo not ace aon me 401 N 14 
Chlorine, Bee rae oh ee Rac sae 30°47 Cl, 106°5 
Platinum ... 28:09 oo 28°36 28:08 28°17 28°33 Pt 99 
100-00 349°5 
In the following table, the mean of these results is compared with my ana- 
lyses of the platinum salt from the cinchonine bases. 
Coal-Tar. Cinchonine. 
Mean. Mean. Theory. 
Carbon, 5 . 34:53 34:04 34:33 
Hydrogen, . : 2b O0 2:95 2°86 
Nitrogen, . . fe US Sue 4:01 
Chlorine, . : ee eae 30-47 
Platinum, . 7 = 204 28°13 28°33 
Action of Iodide of Ethyl on Lepidine. 
Hydriodate of Ethyl-Lepidine.—As it was evident that the process for prepar- 
ing this compound, and from it the platinum salt, was one of purification, I thought 
that I should, by this means, obtain nearer results on analysis than was the case 
with the experiments last quoted; and the following may be considered as con- 
firming the truth of the supposition. 
Coal-lepidine, sealed in a tube with excess of iodide of ethyl, and exposed for 
some hours to 212°, yields a mass of brown needles, which, on recrystallization 
from alcohol, are of a brilliant canary yellow. They have the same property of 
becoming red at 212° as the corresponding salt of chinoline, although scarcely to 
the same degree. 
ee grains iodide ethyl-lepidine gave 
5595 ... iodide silver. 
or per cent.— 
Experiment. Caleulation. 
Carbon, ; 3 Roe 48:16 Gye GE 
Hydrogen, . 5 386 4:68 LaDy TRE 
Nitrogen, . : oP 4-68 N 14 
Todine, ; : 42°52 42°48 I 127 
100-00 299 
Platinum Salt of Ethyl-Lepidine.—This salt was obtained in the same manner 
as the corresponding one of ethyl-chinoline. It is, at the first moment of preci- 
pitation, somewhat soft, but soon becomes hard and crystallized. It was pul- 
verized and well washed with a mixture of alcohol and ether previous to ana- 
lysis. 
