COMPONENT PARTS OF SALTS* £0/ 



is employed as the basis of other chemical analyses. Ber- cwately deter- 

 thollet, who has sought to determine some of these in his OUB 

 late papers, was desirous, that they should be carried to the 

 highest degree of accuracy; and invited me, to resume thtf 

 subject, reiterating the experiments, varying the methods, 

 and taki.ig the greatest care to avoid every source of tTrour. 

 This I have endeavoured to do, and at the same time I ex- 

 tended my observations to a greater number of compounds. 



" As these determinations depend particularly on the ac- 

 curacy of the weights, I think it necessary to say, that I al- 

 ways used a balance made by Fortin, which, when loaded 

 with a kilogramme [2flbs. nearly], is sensible to a milli- 

 gramme [0*01544 of a grain, or one millionth of the load].** 



After this introduction, Mr. Berard, in a pretty long pa- 

 per, gives the detail of his experiments; but as these would 

 occupy much room to little purpose, I shall pass them over, 

 merely giving the tabulated results, with which he concludes. 



Salts* 



Muriate of potash - - - - 



of soda - - - - - 



Sulphate of barytes - - - 



of potash - - - 



of soda - - - - 



Nitrate of potash - - - - 



Carbonate of potash - - - 



of soda - - - - 



Subcarbonate of potash - 



■ ■■ — — — — of soda - - 



Base. 



66-66 

 57*00 

 07-70 

 5724 



47*22 

 48-64 

 53-81 

 44*38 

 70-21 

 62'53 



Acid. 



33*34 

 43*00 

 32-30 

 42 76 

 52-78 

 51-36 

 46-19 

 55-62 

 29-07 

 37*47 



Total. 



100* 



100 



100f 



100 



J 00 



100 



100+ 



100 



100 



100 



Table of salts, 



* Observations on the Proportions of the Elements of Compounds, 

 Mem. d'Arcueil, vo\ II. 

 t Ibid. 



Jl I suppose the carbonate of potash, as well as the other salts, to beto* 

 tally deprived of wa'.er. 



