374 MIXTURE OP CAMPHOR AND CHLOROFORM. 
presence of capric acid, or rather of the aldehyde, which 
always accompanies it. For instance, when fresh butter is 
heated with concentrated sulphuric acid, and potash is added 
in excess to the melted brown-red mass, the odor of the oil 
of rue is distinctly perceptible amidst the penetrating odors 
of the volatile fatty acids contained in the butter. I ob- 
tained the same odor by submitting to a similar treatment 
various sorts of fish oil, a piece of herring, several kinds Of 
cheese, &c. 
I will mention, in conclusion, that a mixture of train oil 
and sulphuric acid saturated with lime having been kept 
several days before distillation, the distillate consisted of a 
turbid water, which no longer possessed the odor of oil of 
rue, but distinctly that of peppermint. This circumstance 
is interesting on account of the isomerism of the oil of rue 
with the camphor of the oil of peppermint. — Chem. Gaz., 
from Journ.fur Prakt. Chem. 
ART. XCIIL— MIXTURE OF CAMPHOR AND CHLOROFORM. 
Messrs. J. & H. Smith, of Edinburgh, have discovered a 
valuable means of administering camphor in a perfect and 
concentrated state of solution ; which consists in uniting it 
with chloroform, according to the following formula : solid 
camphor, three grammes ; chloroform, one gramme. The 
solution occurs rapidly and completely. It is a truly 
curious fact which, perhaps, has no analogy in chemistry, 
where the relation of the solid to the liquid solvent is so 
great. The addition of a certain proportion of water, 
emulsinized with yoke of egg very fresh, does not cause 
the separation of particles of either camphor or chloroform. 
If you add to this emulsion a quantity of water sufficient 
to obtain a mixture weighing 120 grammes, (about 4 
ounces) each tea-spoonful of the mixture contains about 25 
centigrammes (3| grains) of camphor. 
