j 76 Elements of Mineralogy. 



This Salt requires at leaft 20 times its 

 own weight of boiling water to diffolve it, 

 and 50 times its weight to keep it in fo- 

 lution. It is alfo foluble in hot fpirit of 

 wine, and this folution burns with a greenifli 

 flame. Its folution in water, when heated, 

 turns that of litmus red. It vitrifies in a 

 moderate heat, but the glafs fo formed is 

 again foluble in water. Its fpecific gravity 

 is i ,479. 



The Nitrous Acid^ though generally 

 ranked among the mineral acids, can fcarce 

 be called fo, as it always requires for its for- 

 mation, the putrefaction of animal or ve- 

 getable fubftances. It is never found dif- 

 engaged from all bafes (except perhaps in 

 charnels and privys), but always united either 

 to alkalis or Earths. 



The Marine Acid is found only in a ftate 

 of combination with alkalis, earths and fome 

 metals. 



The Sparry is found in fluor fpars, lapis 

 lazuli, chryfoprafium, and phofphoric blende. 



The Succinousy found only in amber. 



The 



