SOME NEW BASES OF THE LEUCOLINE SERIES. 277 
Action of Iodide of Methyl on Octacoline, C,,H,,N. 
A portion of fraction 355°-360° C., consisting presumably of the base octa- 
coline, C,,H.,N, for in a former investigation it was from fraction 360-65° C. 
that this base was obtained, was heated in a sealed tube with iodide of methyl 
in the water-bath for thirty minutes. On cooling, the iodide of methyl com- 
pound crystallised out in brilliant orange needles. The crystals were collected 
on a filter, well washed with cold alcohol, and dried at 100° C. 
Analysis of orange-coloured crystals dried at 100° C. :— 
I. 0:231 grms.gave— 
0464 ,, CO, = 54°89 per cent. carbon. 
OLEG,,,! HO =. 15°36 a hydrogen. 
II. 0116 ,, gave— 
0074 ,, AglI = 34:39 per cent. iodine. 
III. 0:°249 ,, gave— 
01575 ,, AgI = 34:18 per cent. iodine. 
These analyses show this salt to be the zodide of methyl-octacoline, 
C,,H,,NCH;,I, the formula of which requires— 
Found 
Calculated |e 
5 II III. 
Carbon, F 55:28 54:89 
Hydrogen, } 6:50 5°36 ; Sas 
Iodine, ; 34°41 nas 34:39 3418 
The deficiency in the percentage of hydrogen found is inexplicable, but 
from the carbon and iodine determinations agreeing so closely with the 
theoretical quantities, it is apparent that these crystals are the iodine of 
methyl-octacoline. The fraction from which they were prepared, 355°-360’, is, 
therefore, the same in composition as the one previously examined, 360°-365° C. ; 
bearing out the statement made in a former paper that amongst bodies of such 
high molecular weights and high boiling-points the same base is found in a 
state of considerable purity, extended over several fractions. In the present 
investigation ¢etracoline has been found in fractions 285°-290° and 290°-295° C., 
its theoretical boiling-point being 292° C.; likewise pentacoline was found in 
fractions 305°-310° and 310°-315°, its theoretical boiling-point being 310° C.; 
and lastly, octacoline was found in fractions 355°-360° and 360°-365°, its theo- 
retical boiling-point being 364° C. 
VOL. XXIX, PART I. 4B 
