Bowen’s Analysis. 325 
C. 
The whole was then thrown upon a filter, and the insolu- 
ble powder repeatedly washed with distilled water. This 
powder when collected and dried, weighed 175 grains. 
Upon the insoluble portion (C,) muriatic acid was pour- 
ed, when it was entirely dissolved with effervescence, ex- 
cepting a residue of one grain, which was silex. 
The muriatic solution (D) was filtered and saturated with 
caustic ammonia, when a brownish coloured precipitate was 
produced. This precipitate when collected and dried 
amounted to two grains in weight. Diluted sulphuric acid when 
digested upon it, dissolved it in part, and gave with prussiate 
of potash a blue precipitate. The residue was then heated 
with caustic potash, and dissolved in water. Sulphuric acid 
being added, and the solution placed in a moderate heat, 
crystals of alum were formed. This precipitate then con- 
sisted of alumine and oxide of iron. 
F 
The muriatic solution was then evaporated, when it crys- 
tallized entirely in needle-shaped crystals, which possessed 
all the properties of muriate of strontian—particularly the al- 
coholic solution tinged flame ofa most beautiful red. Esti- 
mating, therefore, the quantity of pure strontian from the 
carbonate 4 gree by the decomposition of the sulphate, 
the Lake Erie mineral contains in two hundred parts— 
_ Pure strontian, . - 108.5 
ilex, - - — - re 
Alumine, - + . 1.6 
Oxide of iron, - . - 5 
Sulphuric acid and water, - 88. 
200, 
Analysis of a Sulphate of Barytes from Berlin, Con. 
