op schooley's mountain. 541 



wooded mountains, and issues from the perpendicular side of a steep 

 rock, about forty or fifty feet above the level of a brook that gurgles 

 and foams over a rocky bottom, within a few paces of it. The extre- 

 mity of a wooden leader is adapted to the cleft in the rock to receive 

 the water, and convey it to the platform where the drinkers assemble ; 

 and to recesses, whither the bathers retire. The spring discharges 

 a gallon in about two minutes and a half, and the quantity is not observed 

 to vary under any changes of season or weather. Its temperature, at 

 its issue from the rock, was found to be fifty-two degrees of Fahrenheit. 

 I instituted the following preliminary trials in order to obtain some ge- 

 neral notion of the substances to be expected from the analysis of this 

 water. 



a. Though it seemed superfluous to examine it for iron, yet in order 

 to observe its habitudes with the tests of that metal, prussiate of lime 

 was added to a portion of it fresh from the spring, and tincture of galls 

 to another. The tincture speedily turned it of a fine purple colour, 

 and the prussiate produced a precipitate after a short interval. 



o. I boiled a portion of the water, in a glass vessel, down to one half; 

 its transparency was changed, and it assumed a yellowish green colour, 

 such as it acquires by standing a few hours in the open air. After this 

 boiled water had entirely cooled, it no longer gave any indication of 

 iron to the same tests. 



c. There was no effect produced by the water from the spring on 

 infusion of litmus, nor on litmus paper. 



d. It produced no change in tincture of turmeric, nor in turmeric 

 paper. 



e . The addition of concentrated sulphuric acid caused an extrication 

 of air bubbles. 



f. Acetite of lead was in nowise discoloured. 



g. Oxalate of ammonia gave some precipitate, and, to avoid ambiguity 



