104 Mroro@RaPH tia. 
agitationthat kept it rarify'd.ceafes.it eafily condenfes,and commixt with 
ether indiffoluble parts, it fticks and, adheres. to the next bodies it, meets 
withalhs abd thisis,a certain Sa/é that may be extracted out of Sot, 
. Eighthly,'\that’ many indifloluble parts being very apt and prompt | 
berarify dy and foj whileft they. continue in that heat and agitation, are 
lighter then the Ambient Air; are thereby thruft and carry dupwards 
with great violence, and by that means carry along with them, not onely 
that Sulize: concrete bmention d before, but many. terreftrial, or indi 
~ foltible and irrarefidble:parts,, nay, many parts alfo which are diffoluble, 
but are: not fuffer'd.to ftay long enough in a fafficient heat to make them 
prompt and apt for that action, ge il as find in. Seot, not onely 
a part, that-being continued longer in a competent heat, wilt be dif- 
Gils byithersit or take fire and burn; but a part alfo which is fixt, ter- 
feftrialand irrareftable. 2 — : ; | 
-Ninthly, thatas there are thefe feveral parts that will rarifie and fly, 
or be driven up by the heat, fo are there many others, that as they are 
indiffoluble by the! aerial menftruuur,fo are they of fuch fluggith and grofs 
parts, that they are not eafily rarify’d by heat, and therefore cannot be 
rais d by it';the volatility. or fixtnels ofa body feeming to confift only in 
this, that the-one is ofa texture,or has component parts that will be 
eafily rarify'd:into the form of Air, and the other, thatithas fuchas will _ 
not,without much ado,be brought to fuch a conftitution; and this is that 
part which remains ‘behind in a white body call'd Afhes, which contains 
a fubftance,or Salt,which Chymitts call /kals-what the particular natures 
of eachofthefe bodiesare, I thall not here examine, we, : it inan- 
other place,but fhall rather add that this Hypothefis does fo exattly agree 
ith all Phenomena of Fire, and.{o genuinely explicate each particular 
circumftance that I have hitherto ea that it.is more then probable, 
that thiscaufe which I have aflign'd is the true adequate, real, and onely 
caufe.of thofe Phesemena; And. therefore I fhall proceed a little fur- 
ther, to fhew the natureand ufe of the Air. Hi note ‘a 
Tenthly,therefore the diffolving parts of the Air are but few,that is,it 
feems of the nature of thofe Saline menfirnnms, or {pirits, that have very 
much flegme mixt with the {pirits, and therefore.a {mall parcel of it is 
pinks glutted, and.will diflolve no mores and therefore unlefs fome 
th part of this #enfiruum be apply'd to the body to be diffolv’d, the 
action ceafes, and the body leaves tobe difielv'd and to fhine, which is 
the Indication of it, though plac’d or kept in the greateft heat; whereas 
Salt-peter is a menftrunm, when melted and red-hot, that abounds more 
with thofe Diflolvent particles, and therefore as a {mall quantity, of it 
will diffolve a great fulphureous body, fo will che diflolution be very 
quick and violent. t 93 ’ 
_ Therefore inthe Eleventh place, it is obfervable, that, as in other 
folutions, pire quick fupply of freth ~enffruum, though but 
weak, be poured. on, or applied to the difloluble body, it quickly con- 
fumesit > So this wenftruum of the Air, if by Bellows, or any other fuch 
‘contrivance, it be copioufly apply'd to the fhining body, ig Sopee #0 
RONG ; iflolve 
a 
