of Alleghany and Keskeminetas Valleys. 51 



this heated substance with -water a turbid solution was obtained, which, 

 after filtering, appeared clear and colorless ; the contents of the filter con- 

 sisted of magnesia. As caustic soda in the cold, and carbonate of soda 



ated to dryness. This exsiccated salt mass was soaked ii 

 "'' is dissolved, leaving only a very small quantity of ^ 



After the powder had settled in a high glass cylinder, and the 

 ed solution was removed, the powder was collected upon a f 

 well washed with water. The dried light powder was heated ' 

 fectly pure carbonate of lime, the heated mass then several times Doiiea 

 with water, filtered, and the contents of the filter washed. The lime of 

 this alkaline-reacting solution was precipitated by oxalic acid. The oxal- 

 ate of lime was well edulcorated, and the solution obtained evaporated to 

 dryness and then heated, in order to decompose the oxalates. After 

 heating, the remaining mass was soaked in water, and treated with mu- 

 riatic acid, when some coal remained, which was removed by filtration. 

 The colorless liquid evaporated to dryness left a small quantity of a whi- 

 tish substance, which was put in a bottle with a glass stopper, and abso- 

 lute alcohol poured upon it ; the alcohol acted upon the substance for 

 several hours, during which time the bottle was often shaken. One part 

 of the filtered alcoholic solution was evaporated, by adding some water 

 to it, and then redissolved. The solution obtained produced no action 

 upon caustic soda and oxalate of ammonia, but by adding phosphate of 

 soda and heating it in a test-tube a white turbidness was instantly pro- 

 duced. The other part of the alcoholic solution inflamed, burnt with a 



b. b. Examination of the dried precipitate (b.b.) insoluble in water. 



1. This precipitate or sediment formed a reddish-yellow powder which 

 had neither smell nor taste. By heating in a platina crucible its reddish- 

 yellow color changed into a dark cinnamon brown, without carbonizing 

 or giving any smell resembling that of burning organic substances, or 

 changing moistened curcuma-paper into brown or reddening litraus-papei 



when brought near the mouth of ^ "' " ' ''- ' ' 



refuse, soaked in water, gave a solu 

 reaction. 



2. One part of the heated powdei 

 a sufficient quantity of concentrated sulphu 

 the same, the mixture was boiled for a while, and the vapors conducted 

 h an adopter into water. It was observed that neither corrosion of the 

 glass was perceptible, nor was any flake of silica to be seen in the water, 

 ^oi even after the solution was mixed with some ammonia and left 

 standing for several days. The same was the case with the sediment 

 which was separated from a sufficient quantity of bnne by boiling, and 

 which had not been washed with water. It was also used in the dry 

 5tate, but was not heated. In neither of the experiments could fluorine 

 ^e detected. 



