- © A. Wurtz’ Contributions to Analytical Chemistry. 
mination eres 0471 of magnesia : = 99-05 De Gry Fy very fair 
result. 0.42 gram of the same magnesia was dissolved in chlo- 
rohydric acid, the chlorid converted into nitrate by evaporation 
with excess of nitric acid in a beaker eae the residue trans- 
ferred to a platinum crucible, dried an ted. The residual 
0'4392 gram of the above magnesia was then taken, dissolved 
in chlorohydric acid, mixed with 06907 of the pure ‘chlorid of 
potassium, and 0- 9946 of the pure chlorid of sodium, water 
added sufficient to dissolve the chlorids, then an excess of nitric 
acid, ond the whole evaporated to dryness in a beaker glass on 
: “After expen pe power Silerine the liquid was transferred to 
a latinum crucible, and evaporated on the sand-bath until 
___ the residue was syrupy in consistence. Some caution is neces- 
ary during the latter part of this evaporation to prevent spatter- 
The cover was then placed loosely on the crucible and a 
sand- bath heat st applied. sae gas was evolved for a consid- 
time with nally the mass solidi 
aad eat hovers it again fused, 
en rue ty On 
Pg alanis 
