mixeicfelf with the fulphureousfak of calcined Tartar rcfolved 
in the moid: Air,or in common water,without turbidncfj and with- 
ouc coagulation: But that portion of this ccmino» fait, which is 
not condenfed but by the total evaporation of ihe water that had 
diflfolved it , hath an acidity that inftantly coagulates the fait of 
Tartar refolved, and all other fixed Salts that arcfulphureous and 
nitrous. 
The Fitriol.j which in a -nioift Air yields an efflorefcence upon 
fulphureowsinarcafites, hathJikewifea juicy portion,condenfable 
only by the total evaporationof its aqueous humidity,and being of 
a very acrimonious tafte,and of anun^luous confiftencCjandquick- 
ly refoluble-in a moift Air *, which juicy portion is very different 
from that which it condenfeth firft Sccryftallifeth by cold in the 
w^ater where this vitriol hath been diflfolved^ Thefe cryftals are 
.pure vitriol,acid-auftere,of which much mineral earthprecipitates 
by the mixture of fulphureous and nitrous fairs , with which the 
other portion will mixe it felf without turbidnefs, not having,]ike 
the former, that acidity upon which the fulphureous falts can 
work: Which is oiherwife in common falt,of which the firft por- 
tion is the nioft fulphureous, and the fecond the moft acid. 
True Nure islikewifecompofed of two different faline por- 
tions; the one more fulphureous, which cryftallifeth by cold^and- 
in moifture^ and this^ther, which remains diffolved after this cry- 
ftallifation.and is not condenfed but by a heat ftrong enough to ex- 
pel all diffolutive humidity, is lefs fulphureous^and hath fomeaci- 
dity , which the other hath not. 
firjl Beings or Emhrions oi mvitrdX fairs are nothing but 
vapourSjOr juices not concreted^totally vaporable;of which fome 
may be condenfed and in part fixed by theaftion of fire, or difin- 
gaged from their matrixes ^ and made capable of concretion by 
means of the Air^which is obferv'd in certain Nicrous,AIaminbus 
& Vitriolique falts.The fulphureous fait * is found in the lime of 
certain hard ftcnes burnt in the fire, and whichis afpeciesoftrue 
Nitre, had its Seminal Being in thofe crude ftones;and in that flate 
of its firft Being,it isvery different from that which it acquires by 
the fire, which from Cold and Coagulative, changes it into Cau- 
flique and Refolutive. This cold and coagulative quality of this 
ftony fait in its firft Being, manifefts it felf enough in the waters of 
certain Rock-fprings,which are very limpid and cold, and breed 
fcold and fcirrhous tumors under their throats that ordinarily 
driok 
