on the Ammonia-cobait Bases. 263 
quently by Gregory. Frémy gives in addition one equivalent 
ace of 15 equiva 
phere of carbonic acid gas, which could not be the case upon 
Claudet’s view, since we should then have the equation . 
Ns H16Co2Cls=5NH3+2Co0Cl+ HCl, 
tee the presence of free nitrogen and hydrogen renders it 
he probable that the decomposition is in reality expressed by the 
* equation 
. 5NHs.Co2Cls=2CoC]+NH:0]l+8NH;+N+2H. 
i e have more than once endeavored to determine the amount 
the chlorid of Purpureocobalt is readily decomposed by boiling, 
a dark-brown precipitate, probably of the hydrated magnetic 
a he being thrown down, while the solution becomes brown- 
yetow, and contains chlorid of ammonium and chlorid of Luteo- 
cobalt, ammonia being at the same time given off. The quantity 
of chlorid of Luteocobalt which is thus formed is always very 
small, being very much less than one equivalent for two equiva- 
lents of the chlorid of Purpureocobal 
may be boiled for a very long time with concentrated chlorhy- 
dric acid without decomposition, and this stability in the presence 
magnetic oxyd of cobalt, CosO1. The red gas arising 
ew the action OF ete acid : n ave pig exertsa 
‘ty remarkable influence upon the chlorid o ba 
Converting it into the accu ot a base, which will be described 
further on under the name of Xanthocobalt. 
