BISMUTH. 237 



tions, mean 20 high. Richards, 1893, 14 determinations, 

 mean 224 high. 



For the bromide, the mean of 15 determinations oi 

 Richards was 245 high. 



According to Richards' determinations, we ought to put 

 Ba= 137.5. 



We have seen that this conflicts with the dry way work, 

 also with Dumas and Marignac, who would require only 

 137.05 and 137.15, or a mean 137.1. 



As the case stands, we must conclude Ba=i37, until 

 positive dry way work, in which definite compounds are 

 weighed, proves that the dry way work done by Turner, 

 Struve and Marignac was very badly done. 



Be = 9. BERYLLIUM. NILSON, 1880. 



The crystallized sulphate, Be C>4 S, 4 H2 O= 177 yields 

 upon ignition the oxide Be O = 25. The atomic ratio is 

 0.14 124, rise 51 for o.i. 



Nilson and Pettersson, 1880, made 4 determinations, from 

 52 to 36 high; mean 45 high. 



Kriiss and Mohradt, 1891, by the same method, made 16 

 determinations, running from 37 to 10 high; mean 20 high. 



The last mean corresponds to 9.04. 



Bi = 208. BISMUTH. SCHNEIDER, 1851. 



Biz : Bi2 Os =416 : 464 = 0.89 655. Chg. 5 low. 



Schneider, 1851, 8 Det., 682 634; 48. Mean o low. 

 Marignac, 1883, 6 Det., 696 658; 38. " 27 high. 

 Lowe, 2 Det., 656 640; 16. u 7 low. 



Schneider, 1894, 6 Det., 662 648; 14. " 2 high. 

 Bi2 (O* S)3 : Bi2 Oa =704 : 464= 1.51 724. Chg. 20 low. 

 Marignac, 1893, 6 Det., 775 682; 93. Mean 4 high. 

 This record is sufficient. Schneider's work, of 1851, 

 determined the value; Marignac by his new method con- 

 firmed it; Schneider, in 1894, settled the question. We 

 have no room for rubbish. 



