C 4* 3 



the neighbourhood alfo carefully obferved ; after 

 which we may enter on our experiments. 



From the fubftances contained in mineral 

 waters, they admit of the four following divi- 

 sions. 



I. ACID AND NEUTRAL SALTS. 



II. EARTHLY SALTS. 



III. METALLIC SALTS. 



IV. SULPHUREOUS. 



I. ACID AND NEUTRAL SALTS. 



More eminently faline, containing thia acids, , 

 and the compound of acids and alkalis form- 

 ing neutral falts. 



1. Fixed air * the only acid found in any 

 quantity pure. 



2. Aerated foda. 



3. Glauber's fait. 



4. Vitriolated tartar. 



5. Saltpetre. 



6. Marine fait, 

 f 



II. EARTHY SALT?, 



1. Epfom fait. 



2. Magnefian nitre. 



* Vitriolic acid is found in extremely fmall quantity, and that 

 very feldom. 



f Perhaps Borax, but it is not quite certain that this is a Mineral. 



3. Mag- 



