C 48 3 
of Saif, without producing the leaft Fermentation. 
I afterwards put feme of it into Oil of Tartar per 
^Deliqu'mm, and could not perceive any Ebullition; 
wherefore it is to be ranked among the neutral Salts. 
Experiment X. 
Thrown upon red Coals, it did not crepitate like 
Sea-Salt, but it boiled and fwelled, and after evapo- 
rating it dried up. 
Experiment XI. 
It is of a very pungent Tafte, ftrongly pricking 
the- Tongue, and of a bituminous Smell of Brim- 
ftone, which occafions a violent Head-ach by its vo- 
latile Texture. 
Experiment XII. 
The Salts taken from different Stones are not all 
of the fame Weight or Colour: For fome are yellow 
and unctuous, as if rubbed all round with Tetro- 
laum: Others are very white, others blackifh, and 
others of other Colours, according to the Stones they 
adhered to. 
Experiment XIII. 
1 have likewife found by Experience, that the Salt 
Ammoniac of Vefu'uius is much more efficacious 
than any other Salt known at this Day, in cooling 
Liquors. Upon diffolving fome of it in Water, it 
makes the Water fo cold, that the Sides of the Vef- 
fel which contains it, can hardly be touched v/ithout 
Uneafmefs, through the exceffive Cold. 
Ex- 
