PRODUCED BY DISTILLATION OF CINCHONINE. 321 
I. II. Til. IV. Vv. Calculation. 
— = 
Carbon, 31:93 a0 32°24 32°52 308 32-22 C,, 108 
Hydrogen, 3:09 sa 2°62 2-58 ons 2°39 H, 8 
Nitrogen, ae ist #38 aes ofp 4:18 N 14 
Chlorine, a. ae a sx 31-77 Cl, 106-5 
Platinum, 29°44 29-60 Ks oe 29:40 29-44 Pt 98-7 
100-00 3352 
Lepidine.—After repeated rectifications it was found that the fraction boiling 
about 510° contained another base, to which I give the name of lepidine.* It was 
only, however, when the rectifications had been very frequently repeated, that it 
was obtained pure. My reason for giving a new name to the base containing 
twenty equivalents of carbon, and retaining that of chinoline for the other was, 
that C,, H, N, is almost universally received as the formula of the latter. It has 
been said that the positions of the bases in the fractions greatly alter as the 
rectifications proceed. This is nowhere more strikingly illustrated than with 
lepidine, which in the eighth rectification was met with as low down as 420° F. 
(216° C.). By fractional crystallization, without heat, a crop was obtained, which 
yielded the annexed numbers :— 
{ 5'905 grains of platinum salt gave 
1685 ~~... _ platinum. 
Experiment. Theory. 
28°53 28:27 
But this salt formed only a small portion of the original fraction, for upon further 
evaporation crystals were obtained, which the subjoined platinum determination 
proved to consist of platinochloride of chinoline,— 
6:345 grains of platinochloride of chinoline gave 
1885 ... platinum. 
or per cent. 29-71. 
Experiment. Theory (Chinoline.) 
29-71 29°44 
The real boiling point of lepidine is probably as high as 500° F. (260° C.), or 
éven a little higher, and after four more rectifications, no sign of it could be found 
in the fraction at 420° F., and the nearest approach to a pure base was obtained 
at 510° F. (265° C.). But by so many distillations, at such an elevated tempera- 
ture, it becomes slightly decomposed, a little pyrrol and carbonate of ammonia 
being formed; this in addition to the incombustibility of the fluid rendered its 
j purification and analysis difficult. Fortunately, however, the same remark does 
not apply to its salts. 
3-615 grains of lepidine gave 
11:040 ... of carbonic acid and 
27140 ... of water. 
* From Aemos. 
VOL. XXI. PART II. 4k 
