Salts. 1 79 



termination was fomething different from 

 this, but then the Salt had loft fome of its 

 water by expofure to the air. 



This alkali is found in Hungary \n marfhy 

 grounds of an argillaceous or rnarly nature, 

 either mixed with earth, or cryftalized and 

 efflorefcing. In Egypt it is found at the 

 bottom of lakes, dried up by the fummer's 

 heat. Alfo in the province of St<chena, 28 

 days journey from Tripoli, where it is called 

 Trona, 3 j Mem. Stock, alfo in Syria, Perfa, 

 the Eaji Indies, and China, where it is known 

 under the name of Kien. It is frequently 

 met with germinating on walls, and is by 

 many called Aphronitron ; alfo in many mi- 

 neral waters. It is in its native ftate fre- 

 quently mixed with muriatic Earth, common 

 fait, and marine Epfom, or marine felenite. 



Volatil Alkali, in a mild ftate, is eafily 

 known by its fmell, its volatility and its 

 action on copper, the folutions of which, in 

 the mineral acids, are turned blue by it. It 

 is frequently found, though in fmall quan- 

 tity? in mould, marl, clay, fhiftus, and ift 

 fome mineral waters according to Malouin. 

 Mem. Par. 1746. Phil. Tranf. 1767; 2 

 Bergm. Erde Kugel. 304. It probably de- 

 rive? its origin in the mineral kingdom from 



N 2 the 



