192 STASIAN FOLLY AND FRAUD. 



The data used are the same values for O, Ag, as before, 

 to which now must be added, from p. 70 or any other 



Ka = 38.817 C1=35.I79 



giving us KaCl = 73.996. 



The analytical ratio a, recorded on p. 65, as observed, 

 gives the corresponding atomic weight of silver nitrate by 

 dividing the ratio into the above 73.996; from which quotient 

 we, as before, subtract the value of Ag Oa = 154.745 to 

 obtain the value of N due to the analytical ratio found by 

 the chemist. 



Value of N from Ag Nitrate to Ka Chloride. 



Chemist : Marignac Stas I. Stas II. Stas III. 



No. i 14.057 13.895 13.945 13.834 



2 14.011 .907 .930 .895 



3 14.014 .907 .903 .868 



4 13.924 * .911 



5 !3-899 



6 13-926 



Mean 13-972 13-905 !3-9 2 7 13.866 



These actual results have also been plotted most care- 

 fully to the same scale used for the nitrate, namely, o.oi to 

 the inch; the reduced photo-engraving is printed on 

 Plate III. 



We note again some very striking facts by mere inspec- 

 tion. 



First, we see that the concordance diminishes, as before, 

 in both directions from some central value, near the heavy 

 circle marked N on the line of means. 



One of the most remarkable facts is readily recognized 

 by comparing the graphics for the three series of Stas. 



The first series is the most compact, the least divergent; 

 the other two are less concordant. 



Of these the second lies decidedly high, the third decid- 

 edly low. 



In the original record of Stas (1. c., p. 291), we learn that 

 Series I was made with silver nitrate, many times recrys- 

 tallized, and originally prepared from pure silver. 



