Ammonia, Picric Acid and Metallic Bases. 83 
sequent addition of ammonia in excess. To the a solution, 
a hot, strong solution of picrate of ammonia was a Imme- 
diately the whole became nearly solid with beautiful yellow nee- 
dles and scales—the beaker was rapidly cooled by cold water, 
the contents thrown on a filter, and washed first with a solu- 
tion of carbonate of ammonia mixed with caustic ammonia, and 
finally with dilute caustic ammonia alone 
The splendid gold yellow mass of interlaced needles and scales, 
was more or less decomposed, even by the most careful washing, 
so that the brightest and purest parts only could be taken for 
analysis, nor were even these satisfactory. 
CHIN O.. mean of 5 determinations, 81:26 
re é“ 3 eae - 9:06 
- - 10°08 
100°30 
3 
fae . ‘ e ‘ Zs 
The formula 8NH, 3[70.0,, iad bo. ] requires :— 
+ 
De ee 
Wig ecke A ee ae ee ie: AOE 
100-00 
The salt examined may be either this compound containing 
ed picrate of ammonia, or may be a mixture of :-— 
INH200.C25NG, t 0, wiee 
Ni,Zn0.C,, i, me 
of the latter hypothesis. 
Ammonia-picrate of Cadmium. | ee 
The cadmium salt is eee and eink eh in exactly re a i, 
manner as the zinc, which it nearly rese 
es: it is however not~ 
sO Siok in color, but pure anus y allow. Like Lt zine 5 
Heated on platinum the salt wih a beautiful 
Tight, - hose, 
eS 
- 
