264 ^11 Analysis of 



be entirely destroyed * ; and what has surprised M. De Nelis 

 most, the silver bands will be bent back, from the glass in pro^- 

 portion as it is destroyed," 



XLIX. An Analjjsh of the ISlwcral IVaters: of Dtnilhne and 

 PHcaHhly. Bij John Murray, M.D. F.R.S. Ed. 



I.. Analysis of the Dinihlane IVater. 



JL HIS water was discovered last sunniier, and was first taken 

 notice of, from the circumstance of the fre(iuent resort of flocks 

 of pigeons to the ground where it breaks out. It appears in 

 two springs, at the distance of nearly half a mile from each other, 

 in a field about two miles to the north of DunbUuie, the pro- 

 perty of the Earl of Kinnoul. This district is at no great di- 

 stance from thiC range of the Grampians, to which it ascends ; 

 masses of the primitive rocks are spread over the surface, and 

 are found in the beds of the streams ; among which tlie conglo- 

 merate rock that seems to skirt the Grampians is abundant. 

 1 he prevailing rock of the district itself is the red sandstone, 

 and it is generally covered by a bed of gravel, in many places of 

 considerable depth. It is from this sandstone that the water 

 appears to issue. The spring, however, iji both the places wiiere 

 it breaks out, has been laid open only to the depth of tV\-o or 

 three feet from the surface, and has not been traced to any ex- 

 tent. Its proper source is therefore unknown, and it also re- 

 mains uncertain, how far it may be diluted with water from the 

 surface, or from other springs. Tlie water from the lower, or 

 what for distinction may be named the South Spring, is weaker 

 in taste than the water of the North Spring, and, from the sub- 

 sequent experiments, is proved to contain rather less foreign 

 matter. The Ingredients, however, are the same, and the dif- 

 ference therefore probably arises from the water of the lower 

 spring being further diluted in its course. This diiference led 

 to the analysis of the water of both springs. It is proper to re- 

 mark, that both have been subnutted to examination after a 

 season unusually dry. 



Analysis of the Ulnter of the North Spring. 

 The taste of this water is saline, with some degree of bitter- 



* Much less time will be rctjuired to produce this effect, wlicii tlie in- 

 terrupted circuit is assisttd by receiving the spark fVuni the conductor oii 

 a large insulated ball, aj I have described for the other experiments. 



G.J.S., 



ness. 



