124 M E M O I R S 0/ tbe 
water, it will make it boiling hot 5 it burns not only linnen and 
woollen, but alio wood to a coal, and fcarcely Ipares any thing. 
Nitre, the other ingredient of this fpirit, is very lulceptible of 
flame, which does alfo incorporate many igneous and corrofive 
partich's, after it has lb many hours lain ignited in the fire, and 
comes over, by diftillation, very highly impregnated with the 
fame fiery particles, as is obvious to any one that hath uled to 
make experiments therewith 3 for nitre itlelf has no diflblvingor 
heating quality, but is a great cooler and can hardly be reckoned 
amongll acids 5 but after it comes out of the fire, in the form of a 
Ipirit, it tears to pieces almoft all metals, and brings them to a 
fort of fufion, as aflual fire does 3 it diffolves animals, vegeta- 
bles, and minerals, and produces many of the effects of firej 
therefore from an union of thefe very fiery fpirits there refults a 
much greater quantity of igneous matter. That fire is very apt 
to incorporate with fluids, and even fuch as have had but a Imall 
communication therewith, appears probable from an experiment 
exhibited before the Royal Society • there was taken of Ipirit 
of wine highly re6iified, a wine glals half full, and a tender 
thermometer was placed in the glafs, and then a Ipoonful of water 
was put to it, this immediately warmed the liquor, and made the 
weather-glafs alcend two inches j the liquor in the weather-glafs 
fubfided as the other mixture grew cold. The lame thing was 
made lenfible to the touch, by filling the palm of the hand with 
fpirit of wine, and putting a fmall quantity of cold water into 
the iame hand, and it fenfibly warmed the hand. Dr. Slare is of 
opinion that there is fcarcely any thing, which lies long in the 
fire, but is apt to retain fome igneous particles ; which appears to 
be the cafe in all fixt falts, in quicklime, and more particularly 
in iron 3 if you take a bar of iron, tho* a hundred years old, and 
file off about a pound of it, and then mix and Ibak thele filings 
in a due proportion of water, enough to make the whole jull 
moill^ the fire, which all this while lay concealed in the iron, 
being more dilpofed to enter into the fluid, does, by thefe me.^ns, 
warm the whole mafs. The iron gained this heating quahty by 
fufion m thole fierce fires, which firft leparated the metal from 
the ore J for that it is not in the nature of the ore before fufion to 
emit any heat, has been found by mixing water therewith. There 
are a great many other inftances, which make it very plain, that 
fire will add both to the bulk and weight of bodies. 
Oils may be diftinguifhed into vegetable, animal, and mineral 5 
vegetable oils are again fubdivided into thole made by exprefllon, 
and thole by diftillation5 and of thole made by dilUllation, fuch 
as 
