Bowen’s Analysis. 825 
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 grainsin weight. Dilutedsulphuric 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, 
~ erystals of alum were formed. This precipitate then con- 
-. sisted of alumine and oxide of iron. 
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 produced by the decomposition of the sulphate, 
the Lake Erie mineral contains in two hundred parts— 
Pure strontian, ~ - 108.5 
Silex, -. - - ~ - 1. 
Alumine, —— - iat ot 1. 
Oxide of iron, - - - vhs 
Sulphuric acid and water, _— - 88. 
200. 
Analysis of a Sulphate of Barytes from Berlin, Con. 
Having, by the aid.of charcoal and a red heat,decomposed 
a specimen of sulphate of barytes from Berlin, for the pur- 
pose of obtaining the muriate, it was observed that the crys- 
- Vou. IV.....No. 2... 16, 
