1 80 Elements of* Mineralogy. 



the putrefaction or combuftion of animal or 

 vegetable fubftances. In a cauftic ftate it 

 never occurs. 



CHAP. III. 



Of Neutral Salts. 



Thefe confift of an acid, united either to 

 an alkali, Earth, or metal, of each of which 

 combinations we fliall treat in their order. 



SPECIES I. 



Tartar Vitriolate. 



This is very feldom found native; Mr. 

 Bowles fays it is contained in fome Earths in 

 Spain. Bowles Spain, 68. 



It requires about 16 times its weight of 

 water to diflblve it in the temperature of 60, 

 and only 5 of boiling water, it forms non 

 deliquefcent permanent cryftals, decrepitates 

 when heated, but lofes but little of its weight, 

 is of very difficult fufion, precipitates the 

 nitrous folutions of filver, lead, mercury, and 

 chalk, is not rendered turbid by the addition 

 of any alkali, but the acid of tartar dropped 

 into its folution, forms a precipitate. 



l op Parts of tartar vitriolate, contain about 

 21 of real acid, 63 of alkali, and 6 of water. 



Glauber's 



