Art. 10. — K. ihitsuno: 



NH-, 



NH, 



SO^H 



SO.H 



Cl. 



H,0 



NH, 



NH, 



Cl 



H,0 

 (III) 



SOiH 



On the action of water upon [Co iNH3)2(H,0)2 cy SO,H, we 

 obtain the indigo blue salt [Co (NH,), (H^Ola Cl] SO,-H.,0 (('.). the 

 configuration of which must be, as the following equations 

 illustrate, eitlier of (A) or (P>) (below). 



Whichever of tlie formulae (I), (II) and (III) one may assume 

 for the configuration of [Co (NH«).2 (H,0\ Cy SO, H, that of 

 [Co C1(H20) 3(^113)2] SO, will be as shown by eitlier of the following 

 two formulae (A) or (?>), thus : 



(1 



n , ,NH, 



Cl U,Ü 



H,.0 



(1) 



-0,H + HoO 



S04 



