C ) 
- And now we will conclude this Experiment , only 
taking notice cf the Capun Mortuum, (as Chy mills call 
it ) or of what remains after the Accenfion is over ,1 
which ftems to be fom^thing uncommon. 
In caft you have adjufted the Proportion of Spirit to 
the Oyls exadly well, yon wilt not fail to make the 
Mixture flame : And upon the extindion of the flame 
you will have a light and blackifh Subftance, which 
will indeed vary both as to the Bulk and Complexion , 
according to the difference of the Oyls. But in this 
they all agree, namely, to leave behind a fpungy and 
exceeding light Matter, and perfedly infipid. Some- 
times it (wells up into a great Protuberance, as big as 
a Man's fift above the Gally-Pot,- and if you taft it 
(which you may fafcly do) and macerate it in your 
Mouth, you will find it to be as tafllefs as Paper, or 
even Paper when burnt to Afties. In fo much that we 
may fafely conclude that by this Powerful Mixture a 
third Solid Body refults abfolutely differing from either 
of the two mentioned Liquors : And which makes it 
the more Remarkable, that both of thefe Fluids, which 
have fo great an impreffion upon the Organs; of Smell, 
and a very great one on the Organs of Taft, fliould in 
an inftant be deftroyed, and terminate in a dry infipid 
Cajmt M&rtuum, which will not melt in the Air, nor be 
diuol?ed by Water, nor other Cor rofive fllenjlruums ^ 
but remains as much a Caput Mortuum, as a piece of Pa- 
per, or a Rag burnt to Aihes, if not much more. 
Upon a review of the whole, this Experiment will 
poffiblj^ not only furprize and amufe fame, but pleafe 
and delight others • and not only fo, but perhaps af- 
ford fome Inftrudion to a Philofophical Genius. By 
this the Power of Motion, in order to the producing 
thofe great Effefts of Heat, Fire, Flame, and Light, may 
be confidered ; the Natures of Oyls fomewbat examined 
and extinguifbed, the Produdions of new Bodies by the 
Kk i Power 
