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SELECTED ARTICLES. 
Agreeably to another experiment, 1750 grains by weight, 
of the ethereal sulphurous sulphate of etherine, after washing 
with ammonia, gave 869 grains of an ethereal solution of oil 
of wine. This being 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 acidu- 
lated 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 quan- 
tity 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 refrigera- 
tion 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 appara- 
tus usually employed in the process for generating hydric 
ether, a series of tubulated retorts, of which the beaks were 
recurved downwards in such a manner that the beak of the 
first communicated with a perpendicular tube, passing through 
an open-necked cylindrical receiver, so as to enter the tubu- 
lure of the second retort, of which the beak was in like man- 
ner 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 re- 
tort 48 ounces of alcohol of 830, and a like weight of sulphuric 
acid, besides the ethereal sulphurous sulphate of etherine 
usually resulting from the process, and condensing in the first 
receiver, it was found that in the other retorts severally, there 
were liquids of various degrees of volatility. That in the last 
boiled at 28°, but the boiling points rose gradually as the 
quantity of the residual liquid diminished. 
In order to ascertain the nature of the sulph-acids abstracted 
