MR SCHMIDL ON THE CONSTITUTION OF OIL OF CAJEPUT. 379 
into a vessel containing water or alcohol, beautiful long prisms are formed after 
a few days, which contain no chlorine, and seem to be of the same composi- 
tion as the Hexhydrate of Cajputene. 
If the oil be mixed with a third of its volume of alcohol, or if, in place of 
alcohol, strong aqueous hydrochloric acid be taken, and gaseous hydrochloric acid 
then passed through either of the mixtures, a crystalline compound is formed 
which is of steady constitution, and different in all its physical and chemical 
qualities from the one formed without the presence of alcohol or aqueous hydro- 
chloric acid. 
The following are the detailed results of its elementary analyses :— 
(2) 0°266 grm. of substance gave 0-562 CO, 0-214 HO. 

(b) 0:268 $ iy 05°65 CO, 0-216 HO. 
(c) 0:145 s ‘. 0-205 AgCl. 
Carbon, ity 57°54 b 57°41 
Hydrogen, 8935 % 8-95 c 8°61 } Theory. 
Chlorine, : \ : : 34°49 33:98 
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Bihydrochlorate of Cajputene melts at 55° C., and solidifies again at about 30° 
C.; when submitted to dry distillation, it gives off fumes of hydrochloric acid at 
60° C., and splits into several fractions, one of which is of constant boiling point 
and steady chemical composition, which will be mentioned afterwards. When 
boiled with an alcoholic or aqueous solution of potash it undergoes no change, un- 
less a high temperature be maintained for a long time by cohobation, when one 
equivalent of hydrochloric acid is removed. It is sparingly soluble in cold, but 
readily soluble in boiling alcohol and in ether; it possesses no taste or smell what- 
ever, and differs in that and in most of its other physical and chemical qualities 
from the isomeric compound in oil of turpentine, called the artificial camphor ; 
out of alcohol it crystallizes in beautiful radiating tufts. 
VI. MonoHyDROCHLORATE OF CAJPUTENE, C,, H,, + HCl. 
When the Bihydrochlorate of Cajputene is submitted to distillation, amongst 
several other fractions, one passes over which has been mentioned before as pos- 
sessing a constant boiling point. This fraction distils at 160°, and its analyses 
gave the following results :— 
(a) 0°330 grm. of substance gave 0-848 CO, 0-295 HO. 
(b) 0-257 » » 0:654 CO, 0-233 HO. 
(c) 0°172 5S , 0-143 chloride of silver. 
Carbon, : 70:00 3 69°40 b 69°76 
Hydrogen, . 9:93 10-07 c 9-88 } Theory. 
Chlorine, . 4 - ; 20°53 20°36 

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