192 S. P. Sadtler on Fischer's Salt. 
sesquioxyd-forming ack of the €o is sufficient to enable it 
to take liberated ox 
water-bath and then in a water-oven exactly at 100°. I saw no 
evidence of a decomposition at this temperature alluded to by 
E 
mann. 
The results of full analyses of these six preparations warrant 
me I think in presenting the following conclusions :— 
1st. That Fischer's salt is a Tri-potassic-Cobaltic-Nitrite, its es- 
sential formula being €0,0,,38N,0,+3(K,6, N 0.) + Aq or 
€o0,6N9 _+6(KNO, )+Aq. 
2nd. That it can be formed with 4H, ©, 3H, ©, 2H, ?, H,®; 
or anhydrous, according to the degree of sonceniestion Of the 
solutions hee passing in color from a light yellow to a dark 
oe ellow. 
heel nd, a when the €o is thrown down as ©08, ie 
is roasted and, after treatment Sete ua regia and sul 
ee pki was throws 
dowa from t e solution of the ie sulphates as ed ree 
acetate of soda are chlorine, and then uced b 
e metalic sta 
The potash is aes determined i difference. 
