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- 

 phovinic acid. 



Agreeably to another experiment, 1750 grains by weight, of the 

 ethereal sulphurous sulphate of etherine, after washing with ammo- 

 nia, 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, 1 associated with the apparatus 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 per- 

 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- 



