Part III. Of Salts. 339 
fo, upon the Refolution of the fame, to be nothing but 
their Caput mortuum. There being a Circulation amongft 
Minerals, as amongft Plants and Aninials $ the fame Princi- 
ples palling from one to another. And fo,probably,amongft 
all Bodies, at leaft between the Atmofpbere 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 
Ere, in a Cole-Mine near New-Ca^le upon Tyne. Given 
by Dr. L. Hodgfon,who firft 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 00 SeeVhil 
between Beds of a light and footy Earth ; and fome pure frftf&iB** 
and white as Sow. It hath the perfect Taft of the Factiti- 
ous 5 confifteth of the like Fibers or Styri<z 3 and may be 
eafily fublimed into Flowers, (b) Cerutus hath alfo de- j a Part 
fcrib'd a Sal Ammoniac, as he calls it, fublimed by the fub- 4« 
terraneal Fires of Puteoli-^ but This is of a different kind, as 
appears from his Defcription of it. (c) Hereof are made fe- w Muf: 
veral Preparations of great Ufe to Phyfitians, Alchymijls, and Caked, s.2< 
others, as the Spirit Simple, Aromatiz'd, and Tindtur'd 5 the p * H9 ' 
Tincturd Flowers, &c. 
A parcel of SALT taken from Tenarifje,\6j\. and given 
by Dr .George Trumbal. Tis very white,and light like flowers 
of Sal Ammoniac, or the Earth call'd Agaricum Miner ale. 
Taken by fome to be a kind of Nitre. But not rightly. 
For it hath the perfect Taft of a Lixivial Salt. Makes an 
Efferve[ce?ice with Aqua Forth, as thofe Salts will, but Nitre 
will not do. Hath, as thofe, a fixed Body : neither will it 
flow , or flame, though expofed naked to the fame fire, 
wherein Nitre will do both. Yet hath it fomewhat of a 
nitrous Taft intermixed $ as have alfo many Lixivial Salts. 
I conclude it therefore to be a fixed Alkaly, or, in nature, a 
kind of Lixivial Salt, 
X x 2 Ano- 
