726 



filtered, and evaporated on a water-bath to the consistence of a syrup, 

 gives on cooling a white solid mass, which is the body in question. 

 This was pressed between folds of blotting-paper, dried in vacua over 

 sulphuric acid, and analysed. The numbers obtained on analysis 



lead to the formula 



C 4 H 5 2 ] 



S 2 4 4 , 

 Ba J 



as will be seen from the following per-centage Table : 

 Theory. Experiment. 



I. II. III. IV. 



1071* 



H 5 5-00 2-40 279 



38-09 



36-50 36-10 



209-5 109-00 

 The formation of this compound may be thus explained : 



4 + S 2 H 2 8 = ' '" X 



On neutralizing this compound with carbonate of baryta, the basic 

 hydrogen is replaced by one atom of barium. I propose to call this 

 salt sulphoglycolate of baryta. It is analogous in composition to 

 the sulphoglycerate of baryta obtained by M. Pelouze. This salt 

 does not readily crystallize. It is almost insoluble in ether and in 

 absolute alcohol, but freely soluble in water. It is somewhat deli- 

 quescent. Exposure to the temperature of 100 Cent, causes slight 

 decomposition. From its solution in water, sulphuric acid precipi- 

 tates sulphate of barytes. Baryta-water occasions no precipitate, at 

 least in the cold ; on heating, however, for some time, it becomes 

 turbid, from the separation of the same salt. 



Action of Hydrochloric and Acetic Acids on Glycol Chloracetine 

 of Glycol. A mixture of equivalent quantities of glycol and glacial 

 acetic acid was introduced into a long tube and saturated with dry 

 hydrochloric acid. The tube was then hermetically sealed, and ex- 

 posed to the temperature of a water-bath for about four hours. On 



* Chromate of lead was employed in this analysis. 



