150 
bility in cold water. This so- 
lution reddened turnsole paper. 
These two last experiments do 
not agree with those of M.Bou- 
illon-Lagrange, who asserts 
that the sublimate is not solu- 
ble in water, and that it does 
not redden turnsole paper. But 
he must have certainly been 
led into an error by a part of 
the sublimate surcharged with 
empyreumatie oil. 
The solution of this sublimed 
camphoric acid had also an 
aromatic smell like oil of rese- 
mary: upon the liquor cooling, 
the acid was precipitated in the 
form of small leaves. The neck 
of the retort towards the belly 
was coated with a brownish 
empyreumatic cil, opake and 
very thick weighing froma grain 
to a grain and a half: the bot- 
tom and sides of the retort were 
covered with a slight coating of 
charry matter. 
On the Camphoric Acid, — Mi 
In spite of the difference between the camphoric and benzoic 
acids as above exhibited, I thought it right to subject them to 
some new experiments, with a view particularly to neutralize them 
by some bases, in order to observe the properties of their salts. 
" 6. Neutralization of the 
camphoric acid ly lime. 50 
grains of camphoric acid were 
boiled in four ounces of water, 
and it was attempted to neu- 
tralize them by pure carbonate 
oflime; when 30 grains of this 
carbonate were added, the ef- 
fervescence ceased; but the li- 
quor, although reduced to three 
ounces, reddened turnsole still 
strongly; it even’ retained this 
property when I had added 85 
grains of carbonate of hme: 
having diluted the liquor in 
eight ounces of water, it lost 
this 
§. Neutralization of the 
benzoic acid by lime. 50 
grains of benzoic acid were 
boiled with 30 grains of car- 
bonate of lime, and six ounces 
of water, until the liquor no 
longer reddened turnsole: the 
salt was afterwards separated 
by treating the deposit eight 
times with eight ounces of wa- 
ter each time. The residue, 
when well washed and strongly 
dried, weighed ten grains, and 
was nothing but pure earbonate 
of lime: thus 20 grains were 
consumed, The liquor having 
; been 
