SILVER, POTASSIUM, ETC. 37 



Hence, if chlorine = 35.370, ± .014, then Na = 22.998, 

 ± .011. 



For potassiiun chloride: 



From (i) KCl = 74.4217, =h .016 



From (10) and (B) " = 74.4041, =t .007 



From (17) and (25) " = 74-3975. ± -Oi? 



General mean " = 74.4057, ±z .0062 



For potassium bromide we j^et : 



From (2) KBr =^ 119. 11 7, zfc .096 



From (II) and (C) " = 118.810, d= .0118 



General mean " = 1 18.815, dr .0117 



And for potassium iodide : 



From (3) KI = 165.210, =b .053 



From (12) and (D) " = 165.502, zh .029 



General mean " = 165.432, dz .026 



Now, taking the molecular weights of these three potas- 

 sium salts in connection with the atomic weights just found 

 for chlorine, bromine, and iodine, we get these values for 

 potassium : 



From the chloride K = 39.036, ^b .016 



From the bromide " -^ 39.047, it .022 



From the iodide " _= 38.875, ± .034 



General mean " = 39.019, zh .012 



Finally, the three sulphur ratios give us three estimates 

 for the atomic weight of sulphur. In the third of these I 

 have applied the "A" value for silver and the general mean 

 for silver chloride : 



From (8) and (I) S = 31.968, it .014 



From (16) and (I) " = 31-995, =t .032 



From (20) " = 32.041, it .028 



General mean " = 31.984, it .012 



We may now appropriately compare the results of this 



