1823.] 

 Or, 3 



Venctahle and Animal Substances. 



349 



= 3 x 0-9722 

 volumes of water 2 x 0-625 



volumes olefiant gas 



2-9166 

 1-25 



4-1666 



which suffering a condensation equal to the whole vapour of 

 water, will give an ethereous vapour, whose specific gravity- 

 is 2-5. 



"The proportion of the constituents of sulphuric ether, deduced 

 by M. Gay Lussac from the experiments of M. Th. de Saussure, 

 are 2 volumes ole fiant gas + 1 volume vapour of water, which 

 3 volumes are condensed into 1 of vapour of ether, having a spe- 

 cific gravity = 2*58. The ether which I used had been first 

 distilled off dry carbonate of potash, and then digested on dry 

 muriate of lime, from which it was simply decanted, according 

 to the injunction of M. de Saussure. Whether my ether con- 

 tained more aqueous matter than that employed by the Genevese 

 philosopher, or whether the difference of result is to be ascribed 

 to the difference in the mode of analysis, must be decided by 

 future researches." 



"By analogous modes of reduction, the following results were 

 deduced from my experiments. I ought here to state, that in 

 many cases the materials, after being ignited in the tube, and 

 then cooled, were again triturated in the mortar, and subjected 

 to a second ignition. Thus, none of the carbon could escape 

 conversion into carbonic acid. I was seldom content with one 

 experiment on a body ; frequently six or eight were made." 



Table of Organic Axalyses. 



