tJfr A SYSTEM OF 



uniting at the fame time together, by which 

 new compositions are made, that are called 

 neutral falts, or falia neutra. 

 Thefe alcaline falts are, 



SECT. CXXXVL 



i. Fixed in the fire, Alcalia miner alia fixa. 

 A. Alcali of the fea, or common fait, Alcali 

 falis communis , proprie miner ale diftum. 

 i. Pure, Purum. 



This has nearly the fame qualities 

 with the lixivious fait, which is pre- 

 pared from the afhes of burnt vegeta- 

 bles •, it is the fame with the fal fod<e, 

 or kelp, becaufe the kelp is nothing 

 elfe than the afhes remaining after the 

 burning of certain herbs that abound in 

 common fait •, but which common fait, 

 during the burning of thofe vegetables, 

 has quitted its acid. 

 This, 



1. Ferments with acids, and unites with 

 them. 



2. Turns the fyrup of violets to a green 

 colour. 



3. Precipitates fublimate mercury in an 

 orange-coloured powder. 



4. Unites with fat fubflances to make 

 foap. 



5. DiiTolves the filiceous earth in the 

 fire, and makes glafs with it, &c. 

 It diftinguifhes itfelf from the fait of 

 the pot-afhes, by the following pro- 

 perties : that, 



6. It moots eafily into prifmatical crif- 

 tals, that 



7. Fall 



