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SELECTED ARTICLES. 
or invariable ratio does not appear requisite to the distinctive 
flavour or odour of oil of wine. 
The heavy oil of wine, treated by Hennel as sulphate of hy- 
drocarbon, 2S+4CH, and by Serullas as a hydrous sulphate 
of etherine, 4CH4- 2S4-H, I have obtained as above mentioned, 
by exposing the ethereal sulphurous sulphate of etherine, in 
vacuo, over the hydrate of lime, or potash, and sulphuric acid. 
This variety sinks in water, being of the specific gravity of 
1.09 nearly; is of a deeper hue than the other, and of a smell 
less active, with a taste somewhat more rank. A specimen of oil 
thus obtained being subjected to the distillatory process, a por- 
tion came over undecomposed, leaving in the retort a carbo- 
naceous mass. 14 grains of the oil which had not undergone 
distillation, and a like portion of the distilled oil, were seve- 
rally boiled in glass tubes with nitric acid until red fumes 
ceased to appear; about 28 grains of pure nitre were added to 
each, some time before the boiling was discontinued. The 
resulting liquid was in each case poured into a platina dish, 
boiled dry, and afterwards deflagrated by a red heat. The 
residual mass being subjected to water, the resulting solution 
was filtered, an excess of nitric acid added, and then nitrate 
of barytes in excess. 
The precipitate obtained from the distilled oil, weighed, 
when dry, only nine and five-eighths grains while that pro- 
cured from the oil which had not been distilled, amounted, 
under like circumstances, to fourteen and one-eighth grains. 
Ten grains of another portion, left for some time over liquid 
ammonia, yielded only seven-eighths of a grain of sulphate. 
About a drachm of Hennel's oil of wine was subjected to 
distillation with strong liquid ammonia; fourteen and a half 
grains came over, retaining the appropriate fragrance and fla- 
vour. This yielded, by the process above described, only two 
grains of sulphate of barytes. After all the water and ammo- 
nia had distilled, the receiver was changed, and fourteen grains 
of oil, devoid of the fragrance and flavour of the oil of wine, 
were obtained. This yielded one and one-eighth grains of 
