270 TITANIUM. 



mental arithmetic to atomic weights, using the change per 

 o. i stated, give the following very varied values : 



Chemist. Te : Oxide. Oxide : Acid. Te : Acid. 



Berzelius, 128.3 



Wills, I 128.1 



II 128.2 



Brauner, 5 I2 5-7 



i 127.4 



Staudenmaier, 127.4 127.05 127.25 



What is needed, is much more careful work. Brauner 

 intended to find low, for "periodic law." 



The " face of the returns " shows that tellurium has a 

 higher atomic weight than iodine ; possibly 128 is the value, 

 and old Berzelius was right again. 



Ti = 48. TITANIUM. H. ROSE, 1823. 



Ti O2 : Ti CU=8o : 190 = 0.42 105. Chg. 31 high. 

 H. Rose, 1823, 5 Det., 825 273; 552. Mean 828 high. 

 Demoly, 1849, 3 Det > " 3 8ir low - 



Thorpe, 1883, 6 Det., 182 160; 22. " 66 high. 



Process by water alone; oxide weighed. 

 Ti O2 : Ti Br4=8o ; 368 0.21 739. Change 21 high. 

 Thorpe, 1885, 306^,790 762; 28. Mean 36 high. 



To Silver: 



Ti CU : 4 Ag= 190 : 432 =0.43 982. Change 23 high, 

 feidore Pierre, 1847, 9 Det., 520 322; 198. Mean 450 high. 

 Thorpe, 1883, 8 Det., 015 978; 37. " 17 high. 



Ti Br4 : 4 Ag = 368 : 432=0.85 235. Change 23 high. 

 Thorpe, 1885, 5 Det., 241230; n. Mean 50 high. 



To Silver Haloid : 



Ti CU : 4 Ag Cl = 190 : 574 = 0.33 101. Chg. 18 high. 

 H. Rose, 1823. 5 Det., 258 100; 158. Mean 55 high. 

 Demoly, 1849, 3 Det v " T 48 high- 



Thorpe, 1883, 5 Det., 125 in ; 14. " 17 high. 



Ti Br4 : 4 Ag Br= 368 : 752 = 0.48 936. Chg. 13 high. 

 Thorpe, 1885, 4 Det., 982 951 ; 31. Mean 26 high. 



The so-called determinations of Demoly are a curiosity; 



