Springs at Lemington Priors. 204 
silver; and there was a copious deposition, but 
of a dark brownish colour. It seems certain then, 
that some sulphur is retained by the solution, which 
cannot be expelled by boiling. 
XII. THE NEUTRAL SALTS OF THE WA- 
TER: MURIAT OF MAGNESIA, MURIAT OF 
SODA, SULPHAT OF SODA, 
A igalion of the water was evaporated to dry- 
ness; the deliquescent salts were-separated from the 
non-deliquescent; and each of the salts which were 
thus obtained were carefully examined. Thus, by 
processes s which are sufficiently known, it was found, 
that the gallon of water contains of muriat of mag- 
nesia 114.5 grains nearly ; muriat of ne 430 grains; 
sulphat, of soda 152 grains. 
The triple compound, of which I have treated, 
is mixed with the deliquescent salt of magnesia, but 
not wholly ; for it may be discovered with the non- 
deliquescent salts, though these have been separated 
carefully by spirit of wine. . The tartrite of potash 
indicates it in both. Oxalic acid does the same 
thing, separating a white powder with some crystal- 
line grains which are the oxalat of manganese.* 
XIV. THE RESIDUUM OF DIFFICULT 
SOLUTION. 
After these salts had been separated, there re- 
* Bergman, Dissertation, v111, 24. 
VOL, V. BSB 
