Part III. 
Of Salts. 
339 
lb, upon the Refolution of the fame, to be nothing but 
their Caput mortuum. There being a Circulation amongft 
Minerals, as amongft Plants and Animals 3 the fame Princi- 
ples palling from one to another. And fo,probably, amongft 
all Bodies, at leaft between the Atmosphere and the Centre 
of the Earth. 
CHAP. I. 
Of SALTS. 
A Parcel of NATURAL SAL ARMONIAC. ( Rather 
Ammoniac , from its fuppofed fimilitude to that of 
the Ancients, bred under the Sands in Africa.) This I call 
Natural, as being found fublimed, by the fubterraneal 
Fire, in a Cole-Mine near New-Caftle upon Tyne. Given 
by Dr. L. Hodgfon^ho hrft made experiment of the nature 
hereof. And hath anfwer d feveral Queries about it, pro- 
pofed by Mr. Boyle, (a) Here is fome of it lying upon and (a) SeePtil 
between Beds of a light and footy Earth 3 and fome pure 7r ^-/- IV - I 3 G ' 
and white as Sow. It hath the perfect Taft of the Factiti- 
ous 3 confifteth of the like Fibers or Stynot^ and may be 
eafily fublimed into Flowers, (b) Cerutus hath alfo de- cb) See Part 
fcribti a Sal Ammoniac, as he calls it, fublimed by the fub- 4. 
terraneal Fires of Puteoli 3 but This is of a diff erent kind, as 
appears from his Defcription of it. (V) Hereof are made fe- ( c ) Mu c 
veral Preparations of great Ufe to Phyfitians, AlchymiJIs, and Cakeol, s.2. 
others, as the Spirit Simple, Aromatized, and Tmctur'd 3 the p * H9 ' 
Tinctur d Flowers, 6cc. 
A parcel of SALT taken from Tenariffe, 1 674. and given 
by Dr .George Trumbal. 'Tis very white,and light like flowers 
of Sal Ammoniac, or the Earth call'd Agaricum Minerale. 
Taken by fome to be a kind of Nitre. But not rightly. 
For it hath the perfect Taft of a Lixivial Salt. Makes an 
Effervefcence with Aqua Fort is, as thofe Saks will, but Nitre 
will not do. Hath, as thofe, a fixed Body : neither will ic 
flow , or flame, though expefed naked to the fame hre, 
wherein Nitre will do both. Yet hath it fomewhat of a 
nitrous Taft intermixed 3 as have alfo many Lixivial Saks. 
I conclude it therefore to be a fixed Alkaly, or, m nature, a 
kind of Lixivial Salt, 
X x 2 Ano- 
