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 Animals ; the fame Princi¬ 
ples palling from one to another. And fo,probably,amongft 
all Bodies, at lcaft between the Atmofphere and the Centre 
of the Earth. 
CHAP. I. 
Of SALTS. 
A Parcel of NATURAL SAL ARMONIAC. (Rather 
Ammoniac , from its fuppofed limilitude 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-Cajile upon Tyne. Given ’ 
by Dr. L. Hodgfonyx ho 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 M swPhii. 
between Beds of a light and footy Earth ; and fome pure 
and white as Sow. It hath the perfect Taft of the Factiti¬ 
ous 5 confifteth of the like Fibers or Sty rice-, and may be 
eafily fublimed into Flowers, (b) Cerutws hath alfo de- (b) See Parc 
ferib’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- ( c ) Mu £ 
veral Preparations of great Ufe to Phyfitians , Alcbymifts , and Cakeoi. S.2 , 
others, as the Spirit Simple, Aromatiz’d, and Tindur’d ; the p- ' 4? ' 
Tindur’d Flowers, &c. 
A parcel of SALT taken from Tenariffe,\ 6 ’jA t . 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 perfed Taft of a Lixivial Salt. Makes an 
E.jfervef ence with Aqua Fortvs , 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 fomewhatof a 
nitrous Taft intermixed j 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“ 
