= 
Analytical Chemistry. We 
completely washed with hot water. The separation of lime from eam 
by this method is complete, but extremely small traces of magnesia usu- 
ally remain with the alumina. 
Separation of Oxyd of Iron from Lime and Magnesia.—By precisely 
the same method, oxyd of iron may be separated easily and completely 
from both lime and magnesia. The oxyd of iron may be readily washed 
out by hot water, and is not gelatinous like alumina. 
ration of ‘Alumina and Iron Jrom Manganese—Alumina may be 
too small to be detected by the blowpipe. The same process may be ¢ 
Bere directly in separating manganese from iron, when the quantity ‘of 
Manganese is comparatively small. When however this is not the case, 
ammonia i is expelled. It is also necessary in casio the bases by this 
process to bring the solution to the boiling point before adding ammonia, 
and to boil without intermission till all the free ammonia is expelled. I 
this manner, we avoid the formation of traces of sesquioxyd of manganese, 
When iron, manganese, alumina, lime and magnesia are present, and the 
quantity of magnesia is not too large, the solution may be saturated with 
chlorine, precipitat ated by ammonia, and the alumina, iron and manganese 
separated from the other bases by boiling with the solution. The manga- 
nese may then be separated from the alumina and iron by a precisely 
similar lg 
Separation of Manganese ire Magnesia and Lime.—tThis is best 
effected ‘ye ik acetate of soda to the solution, heating and passing a 
current of chlorine gas through it gia hot. The purple red solution is 
to be supersaturated with ammonia and boiled till the free ammonia is 
expelled. The ma —— is preci J esrgecid as sesquioxyd, while the mag- 
hesia remains in solution When alumina and Leas are pee 
as mina, manganese, nesia are 
ie the dilute Blution is is - be oxydized by hicrna and then the 
alumina and uioxyd of manganese precipitated by ammonia and the 
solution boiled till the free apes is expelle 
eparation of Strontia from Lime ~The best method of separating 
ese bases, according to Rose, is the old: rocess of Stromeyer, viz: by | 
ing the nitrates with anhydrous alcohol, which dissolves the nitrate of lime. io 
18 ; 
pie iti omy 1860. 
Au. Jour. crepe 
