452 
ME. C. GEEVILLE WILLmiS OX SOIME OF THE PEODHCTS 
produced milkiness when thrown into water, indicating the presence of the nitrocom- 
pound. After washing several times with solution of potash, and digestion with sticks 
of the latter substance to remove moisture, it was distilled over fragments of sodium, 
and came over chiefly between 65° and 71°. On one occasion, when distilling over 
sodium some impure propyle, as soon as the retort became nearly dry, a small quantity 
of nitrocompound present, which had dissolved in the indifierent hydrocarbon, reacted 
on the metal with great violence, the latter becoming ignited, torrents of smoke being 
evolved, and large quantities of carbon at the same time depositing on the interior of the 
retort and receiver : when the radical is in a state of pmity, sodium remains perfectly 
brilliant under it during the distillation. 
In order to ascertain the boiling-point of propyle, I commenced by determining the 
vapour-density of the fractions, beginning with the portion distilling, in the sixteenth 
rectiflcation, between 72° and 79°; the experiments were made by the method of Dumas. 
the second being taken at a slightly higher temperature than the first. 
I. 
II. 
Temperature of air . . . . 
20° 
20° 
Temperatm’e of vapour . 
o 
o 
112° 
Pressure 
769 mm. 
769 mm. 
Excess of weight of balloon . 
•4673 grm. 
•4817 gi’m. 
Capacity of balloon .... 
294 cub. cent. 
307 cub. cent. 
Residual ah' 
11 cub. cent. 
5 cub. cent. 
Experiment. 
A 
Theory. 
t \ 
I. II. 
C'-'H 
volumes. 
3-10 3-08 
2-97 
It appearing, therefore, that the boiling-point was considerably below 79°, the fraction 
distilling between 65° and 70° was taken for further examination. On combustion, it 
was found that — 
I. ’1678 gramme yielded •5148 carbonic acid and ’2521 water. 
II. ‘1673 gramme yielded •5132 carbonic acid and -2450 water. 
Experiment. Calculation. 
A 
I. 
II. 
r 
Carbon . . 
. 83-7 
83-7 
C12 
72 
83-7 
Hydrogen 
. 16-7 
16-3 
HU 
14 
16-3 
86 
100-0 
The following are the details of a determination of the vapour-density of the same 
portion of fluid by Gat-Lussac’s method : — 
Weight of fluid .... -1098 grm. 
Temperature of vapour . . 100° 
Observed volume of vapour . 43^5 cub. cent. 
