384 Miscellanies. 
which accords with the analyses of Saussure, and also with the con- 
stitution of olefiant gas and paraftine.—Oul of balsam copaiba. This 
oil, extracted from a specimen of balsam copaiba, entirely transparent 
by aqueous distillation, then rectified and dried by chloride of cal- 
cium, and entirely colorless, had no action upon litmus paper, at 22° 
C. had a density of 0.8784, boiled at 245°, and dissolved at 25°, in 
30 parts of alcohol 33° B., in 2.5 of absolute alcohol, in every pro- 
portion in absolute ether, and hardly any in 0.5 of the ether of com- 
merce ; it was not decomposed under the influence of nitric acid sp. 
gr. 1.32, but with the aid of heat gives rise to a body of a resinous 
appearance, is colored red by sulphuric acid, and under the influ- 
ence of solar light unites with chlorine with the disengagement of a 
great quantity of heat, and forms a crystalline body which is depos- 
ited on the sides of the base, and passes from yellow to blue, and 
then to green. 0.560 of this oil analyzed by oxide of copper, gave 
1.777 carbonic acid and 0.588 water; 1m a second experiment 0.482 
produced 1.543 carbonic acid and 0.510 water. Its composition is 
therefore 
By experiment. By calculation. Atoms. 
Carbon SdeiAy SSvol 88.46 5 
Hydrogen 11.66 : 11.75 11.54 8 
which accords with the analysis of oil of turpentine and oil of citron.— 
Hydrochlorate of oil of copaiba. This results from the union of hy- 
drochloric acid gas with the oil which the balsam copaiba distilled 
alone furnishes, and which has been carefully rectified and deprived 
of water by chloride of calcium. It is purified by pressing it be- 
tween sheets of blotting paper, dissolving in ether, and precipitating 
it by alcohol, and washing. It consists of 
By experiment. By calculation. Atoms. 
Carbon 57.95 57.94 . 5 
Hydrogen 8.73 8.50 ©) 
Chlorine 39.04 33.55 1 
a composition similar to that of hydrochlorate of oil of citron, from 
which it differs only by its boiling point, by not being sublimed, and 
by its reaction upon sulphuric acid.— Oil of cajeput. ‘The oil ana- 
lyzed was brought from India by a scientific gentleman; was very — 
fluid, of a clear green and transparent, its aroma penetrating, analo- 
gous to that of camphor, taste hot, specific gravity 0.9274 at 25° C., 
boiling point 175° C., soluble in iodine without any action. 
