420 Campbell — Caesium- Cobalt and Caesium-Nickel, etc. 



The following analyses were made : 



Cs s Co Cl 8 . 



Caesium. Cobalt. Chlorine. 



Found 62-79 9-16 27-83 



Calculated 62*82 9-24 27*74 



Cs 2 Co Cl 4 . 



Cassiurn. Cobalt. Chlorine. 



Found... 56-86 12-53 30-40 



Calculated 56-99 12-58 30-43 



Cs Co Cl 3 . 2H 2 0. 

 Cassium. Cobalt. Chlorine. Water. 



Found 38-64 17-67 32-07 10'94 



Calculated 39-80 17-56 31-87 10*77 



Cs 3 Co Br 5 . 



Cassium. Cobalt. Bromine. 



Found A. 46-65 6 '8-8 46-33 



" B... 7-44 46-97 



" C 45-81 7-08 46-52 



Calculated 46*52 6-84 46*64 



Cs 2 Co Br 4 . 



Cassium. Cobalt. Bromine. 



Found A 41-21 9-49 49-43 



" B 9-20 4960 



" C... 9-25 4932 



Calculated 41-26 9-10 49-64 



Ce 2 Co I 4 



Cassium. Cobalt. Iodine. 



Found A 29-69 7'10 



" B 7*34 60-24 



" C. 7-31 60-29 



Calculated 31-93 7*09 60-98 



Cs Ni Cl s . 



Cassium. Nickel. Chlorine. 



Found A.. 44-42 19.70 35-78 



" B 19*14 35*57 



Calculated 44*61 19-66 35-73 



Cs Ni Br 3 . 



Cassium. Nickel. Bromine. 



Found A 29-93 13'83 55*84 



" B 30*60 13*58 55*49 



Calculated 30*81 13-58 55-61 



The author takes pleasure in expressing his indebtedness to 



Prof. H. L. Wells for valuable advice in connection with this 

 investigation. 



Sheffield Scientific School, 

 New Haven, Conn., September, 1894. 



