Salts* 183 



iieither bitter nor aftringent, but earthy. Its 

 folution mixes uniformly with that of nitrous 

 or marine Selenite, but is precipitable by 

 fixed alkalis, mild or cauftic, and alfo by the 

 faccharine acid, but not by volatile cauftic 

 alkali, which diftinguifhes it from Epfom 



and aluna* 



F; 

 SPECIES V, 



Epfom. 



Many mineral waters contain this fait, 

 particularly thofe of Epfom, Egret, Sedlitz, 

 and Seydchutz : it has alfo been found native, 

 mixed with common fait and coaly matter 

 germinating on fome free ftones in coal 

 mines. 8 Roz. 137. 



This fait, in the temperature of 60, 're* 

 quires about its own weight of Water to 

 diffolve it ; its tafte is bitter ; it efflorefces by 

 expofure to the air, when heated it Idfes 

 , nearly f its weight by evaporation ; its folu- 

 tion is rendered turbid by a mixture with that 

 of nitrous or marine felenite, which diftin- 

 guifhes it from folutions of felenite, but 

 preferves its limpidity when mixed with a 

 folutioa of nitrotts or marine Epfom ; its 

 earth is precipitable by all alkalis in any 

 ftate, and alfo by lime. 



N 4 , joo 



