1 74 Elements of Mineralogy, 



PART II, 



Saline Subftances. 



AL L thofe fubftances which are kriown 

 only by this denomination, require leis 

 than two hundred times their weight of boil- 

 ing water to diflblve them. 







They have moftly a peculiar tafte, and 

 thofe of the mineral kind are uninflam- 

 mable. 



CHAP. L 



Of Adds. 



The Acids to 'be met with in the mineral 

 kingdom, are the aerial, the vitriolic^ the 

 marine^ the fparry, the fuccinous, phofphoric^ 

 nwlybdenous, arfenical, and tungflenic. 



The Aerial Acid is found either in an 

 aerial ftate, as in mines, caverns, wells, or 

 combined with water in mineral or common 

 fprings, or combined with abforbent earths, 

 or in ores, &c. it is eafily known by its pro- 

 perty of extinguiihing lights, uniting to 

 water, and then precipitating lime water, 

 but not a folution of nitrous felenite. 



The 



