Sidphurous jEther, and Sulphate of JEtherim, 477 



The residue of the 2150 grains of eethereal sulphate being 

 subjected to distillation, raising the temperature from 95^, the 

 point at which it had been before discontinued, to 14-0°, 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 aethereal sulphurous sulphate 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-flavoured oil of wine 

 was evolved, and floated upon a quantity of water acidulated 

 by sul})huric or sulphovinic acid. 



Agreeably to another experiment, 1750 grains by weight, 

 of the aethereal sulphurous sulphate of aetherine, after washing 

 with ammonia, gave 869 grains of an aethereal 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 aethereal sulphurous sulphate of astherine yields about half 

 its weight of the aethereal solution of oil of wine. The quan- 

 tity is always somevvhat 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 em- 

 ployed in the condensation of the aethereal sulphurous sul- 

 phate, during the process by which it is evolved. 



Under the expectation of procuring a sulphurous aether 

 of a still higher degree of volatility, I associated with the 

 apparatus usually employed in the process for generating 

 hydric aether, 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 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 like weigh r. of sul- 

 phuric acid, besides the ethereal sulphurous sulphate of aether- 

 ine usually resulting from the process, and condensing in the 



