278 Sulphurous Ether and Sulphate of Etherine. 
The residue of the 2150 grains of ethereal sulphate being sub- 
jected to distillation, raising the temperature from 95°, the point at 
which it had been before discontinued, to 140°, the product obtained 
by means of a refrigerated receiver weighed 602 grains. This was, 
of course, inferior in volatility to the first portion distilled; and, when 
redistilled, it was found to contain a small quantity of oil of wine. 
In fact, it appears, the boiling point of the ethereal sulphurous sul- 
phate rises, not only as the ratio of the sulphurous acid lessens, but _ 
also as the proportion of oil of wine augments. 
The residual liquid being exposed to the heat of a water bath at 
212°; a very fragrant and well flavored oil of wine was evolved, 
and floated upon a quantity of water acidulated by sulphuric or sul- 
phovinie acid. 
Agreeably to another experiment, 1750 grains by weight, of the 
ethereal sulphurous sulphate of etherine, after washing with ammo- 
hia, gave 869 grains of an ethereal solution of oil of wine. This be- 
ing subjected to distillation by a water bath raised gradually to 190°, 
there remained in the retort 148 grains of oil, beneath which there 
were a few drops of acidulated water. Agreeably to the result of 
several experiments, the ethereal sulphurous sulphate of etherine 
yields about half its weight of the ethereal solution of oil of wine. 
The quantity is always somewhat less than half when weighed ; but 
the deviation is not greater than might be expected to result from . 
the loss by evaporation, and the diversity of refrigeration employed 
in the condensation of the ethereal sulphurous sulphate, during the 
process by which it is evolved. 
Under the expectation of procuring a sulphurous ether of a still 
higher degree of volatility, I associated with the apparatus usually 
employed in the process for generating hydric ether, a series 0 
tubulated retorts, of which the beaks were recurved downwards in 
such a manner that the beak of the first communicated with a pet- 
pendicular tube, passing through an open-necked cylindrical receiver, 
‘so as to enter the tubulure of the second retort, of which the beak 
was in like manner inserted into a tube passing through a receiver 
in a third retort, and this communicated in like manner with a fourth 
retort. ‘The second, third and fourth retorts, and the tubes entering 
them, were all refrigerated, the first with ice, the second with ice 
and salt, and the third with ice and chloride of calcium. 
By these means, on subjecting to distillation in the first retort 48 
ounces of alcohol of 830, and a light weight of sulphuric acid, be- 
