264 SULPHUR. 



Reiser's other determinations had not shown so remarkable 

 fluctuations, as in regard to hydrogen. 

 But the conflicts are too great. 



Pt=195. PLATINUM. SEUBERT, 1881. 



See the excellent analytical determinations of Seubert in 

 Part III, pp. 115-119. 



Rb 85.5? RUBIDIUM. 



Rb Cl : AgCl=i2i : 143.5=0.84 321. Chg. 69 high. 

 Bunsen, 1861, 4 Det., 388 175; 213. Mean 68 low. 



Piccard, 1862, 406^,313 245; 68. " 31 low. 



Godeffroy, 1876, 4 Det, 354 320; 34. " 14 high. 



The master came within o.i; hence, no use to credit the 

 value to the closer work of 15 years later. 



Other determinations are called for, independent of this 

 silver process. 



Rh=103? RHODIUM. 



Rh : RhCh (N 13)5=103 : 294.5=0.34 975. Chg. 22 high. 

 Seubert and Kobbe, 1890 : 



10 Det., 974 929; 45. Mean 21 low. 

 This is the only series of value, known to me. The work 

 done under Seubert, probably permits the value 103 to be 

 taken. 



Ru- 102? RUTHENIUM. 



Ru : Ru O'2 = 102 : 134 = 0.76 119. Change 18 high. 

 Joly, 1889, 4 Det., 075 046; 29. Mean 59 low. 



This corresponds to 101.7. All other work is objection- 

 able and very meager. New and serious work is demanded. 



S = 32. SULPHUR. MARCHAND, 1844. 



Set pp. 96-97 for the fundamental determinations, which 

 here are supplemented with some of the more interesting 

 direct determinations. 



Ag2 S : Ag2 = 248 : 216=1.14 815. Chg. 14 low. 

 Dumas, 1860, 5 Det., 838 811; 27. Mean 8 high. 

 Stas, 1865, 5 Det., 854 8495 5- " 37 high. 



Cooke, 1877, I 5 Det., 892 882; 10. " 73 high.* 



Ill 2 Det., 823 810; 13. " 15 high. 



* Rejected for cause. 



