Salts. 1 8l 



SPECIES II. 

 daubers Salts. 



It is found native in fome lakes in Siberia, 

 in feveral mineral waters, and in the fea, as 

 fome fay ; alfo in feveral parts of Dauphins 

 and Lorraine in the Earth, and fometimes 

 germinating on the furface. Monnet Minera- 



439- 



Its chara&ers are the fame as thofe of tar- 

 tar vitriolate, except that it requires but 3 

 times its weight of water to diflblve it in the 

 temperature of 60 ; its cryftals moulder by 

 expofure to the air, and by heat lofe half 

 their weight. The acid of tartar caufes no 

 precipitation when inftilled into its folution. 



100 Parts of this Salt contain about 14 

 of real acid, 22 of alkali, and 64 of water. 



SPECIES III. 

 Vitriolic Ammoniac. 



This is faid to have been found in the 

 neighbourhood of volcanos, particularly of 

 Mount Vefu'vius, where, indeed, it might well 

 have been expecled ; yet its exiftence is ren- 

 dered fomewhat dubious, fmce Mr. Bergman 

 could fcarce find any trace of it among the 

 various fpecimens of falts from Vejumus^ 



N 3 which 



