OP ARTS AND SCIENCES. 



U 



have been able to detorniine, sufficiently to be made available in analy- 

 sis, and probably isoiubrplious. Nitrate of luteocobalt gives line orange 

 crystalline, sliglitly soluble precipitates with potassic oxyfluotungstate, 

 oxylluoniolybdate, and tluoborate. 



For convenience of reference I give here a list of the salts which, iu 

 my judgment, belong to the purpureocobalt series, and which have 

 been more or less completely described. 



ChloVide, 



Bromide (Claudet), 



Iodide (Claudet), 



Sulphate, 



Nitrate, 



Chloro-nitrate, 



Chloro-oxalate, 

 Pyrophosphate (Braun), 

 Chromate (Braun), 

 Dichromate, 

 Amraonia-cobalt-nitrite, 

 Cobalto-nitrite, 



Chloro-fluosilicate, 

 Platino-chloride, 

 Auro-chloride, 

 Antimonio-chloride, 

 Hydrargo-chloride «, 

 Hydrargo-chloride p', 



NORMAL SKRIES. 



Co,(NIl3)„Cle 

 Co,(NII,),„Br„ 



c<>,(Nn3),or,; 



Co,(XIl3)„(SO;;,+OII, 

 Co,(NII,),,(NO,)« 

 Co,(NII,)„Cl,(NO,),+Co,(NIT3)j„ 

 (N03)« 



Co.,(NI-I,),oPp,,+2lOH2 



Co,(NH,),„(CrOj3 

 Co,(NH3),,(Cr,0,)3+OH, 

 lCo,(NH,),,nCo,(NH,).(NO,)j3 

 ^Co,(NH3),„(NO,),UlCo,(NO,),J, 



H-90H., 

 Co,(NH3),„(8iF,),a 

 Co,(NH3),,Cl,+2PtCl, 

 Co,(NII,),,Cl,+2AuCl3 

 Co.,(NIl3)ioCl„+SbCl3 

 Co;(NH3),„Cl„4-4HgCl, 

 Co,(NH3),,Cl,+6HgCI, 



BASIC SERIES. 



Chromate, Co,(NH3),„.0.(CrO,),+60H2 



Hyposulphate (Rammelsberg), Co,(NH3)j,j.O.(S,Oj2 

 Nitrate, Co2(NH,) ,,.0. ( Nb8)^+60 H^ 



Chloride? (Schiff), Co2(NH,)io-O.Cl, 



Sulphate? (Schiff), Co,"(NH,)„.0.(SO,)2 



Tungstate, Co,(NH3)i,.0.(WOJ2 



