of schooley's mountain. 545 



Examination of the fixed Constituent parts. 



Seventy-four ounce measures slowly evaporated in a water bath, left 

 a brownish extract of 4.10 grs. This gives 7.09 grs. only to the gallon. 

 The proportion of foreign ingredients to the simple element, is, there- 

 fore, remarkably small in this mineral water. With the 16.50 grs. senl 

 me I made the following experiments. 



1. I poured over the whole between two and three fluid ounces of 

 alcohol of the sp. gr. .847 in a close phial, and shook it repeatedly 

 during twenty-four hours. The solvent acquired a pretty deep brown 

 tinge and look up 4.10. 



2. The remaining 12.40 grs. were treated with three fluid ounces of 

 cold distilled water, and shaken frequently during twelve hours. The 

 water was coloured brown, and left an extract on the filter, that, after 

 being thoroughly dried by the h^at of boiling water, weighed 4.50 

 grains. 



3. The residue of 7.90 was boiled in 5,000 grs. of distilled water, by 

 which it was diminished 0.65 of a gr. which must have been sulphate of 

 lime. This third solution was still of a pale brown colour, even after 

 the separation of the selenite. All the solutions were kept separate, 

 and the extracts dried, except in one instance, by the heat of boiling 

 water. 



Examination of the Solution hy Alcohol. 



4. A little of the alcoholic solution was tried in a tube the eighth 

 of an inch in diameter, with tincture of galls, as from its brown colour 

 it might possibly contain highly oxidized sulphate of iron ; but no trace 

 was discovered of such an impregnation. The rest was slowly evapo- 



71 



