Bowen’s Analysis. 327 
F 
The muriatic solution was then filtered and saturated with 
caustic ammonia, when a brownish coloured floculent pre- 
cipitate was produced, which when dried, weighed three 
and a half grains, and consisted of oxide of iron witha trace 
of alumine. 
The muriatic solution freed from iron and alumine, was 
decomposed by carbonate of ammonia, and the precipitate 
again redissolved in muriatic acid. This solution being 
placed ona sand bath, deposited tabular crystals of muriate of 
barytes until the solution had become highly concentrated, 
when it shot into needle-form crystals, which tinged the 
flame of alcohol of a deep red colour, and possessed all the 
other properties of muriate of strontian. These crystals of 
muriate of strontian, when collected and dried on paper, 
weighed twelve grains. The crystallized muriate of bary- 
tes, when washed with alcohol and dried, amounted to 182 
‘grains. 
The sulphate of barytes from Berlin contains then, in two 
hundred grains—— 
Pure Barytes, - - - 114.66 
Pure Strontian, — - - - 7.84 
Sulphuric acid - = - 67. 
Silex, - - - = - 5. 
Oxide of iron and alumine, - 3.5 
Water, - - - - - Pe 
200.00 
Remark. 
The sulphate of barytes which forms the gangue of the 
celebrated Missouri galena, having been examined by a 
similar process, gave, in one hundred parts, about one part 
of strontian ;—the sulphat of barytes, fromthe Southampton 
lead mines, Mass. gave no trace of strontian. 
