GOLD, PLATINUM, PALLADIUM, c. 



ride. The constituents of the triple salt are ob- 

 viously 



1 atom bichloride of platinum =21 

 1 atom chloride of potassium = 9*5 



30-5 



And the atomic weight of an integrant particle 

 of the salt is 30-5. 



Berzelius has published an analysis of this 

 powder, which differs but little from mine. He 

 found the constituents 



Platinum . 40 or 12-2 



Chlorine . . 292 - 8-906 



Chloride of potassium 30-8 - 9'394 



100 30-5 



The atomic weight of the salt is the same as 

 that deduced from my own experiments. Not 

 having seen the particulars of Berzelius' expe- 

 riments, but merely the result, I cannot judge of 

 the cause of the slight discrepancies between the 

 proportions of the ingredient, when his analysis 

 is compared with mine : they are probably, in 

 a great measure, owing to the difference of the 

 data, which he employs for his calculations. 

 But, notwithstanding these slight differences, the 

 analysis of Berzelius is a most important corro- 

 boration of the very near approach to accuracy 

 which I have attained in mine. 



