(seq. 45)

[*chap. 7th in upper left hand corner*] Naturall Phylosophy [*37 in upper right hand corner*]

[1] the matter Inflameable is fatty, Sulphureous, oylie, Resinous.

[2] the affections are light, motion, and adhasion.

[1] Light caused by flame is bec: of ye motive parts there of which
can sufficiently vibrate themselves to give vibration to lumin-
-ous particles. (where with ye air is filled) that they may also
vibrate ye fine spirits of our eye. (sealed in ye optick nerves)
so as {that} our souls may perceive their motion. (hence in ye da-
-rk by a blow on ye eye, a spark, flame, or light appears wi-
-thin it because of a like in those spirits).

this vibrating is in strait lines, ye continuance of {which} being
intercepted by any other Dark body begets a shadow, which is a
partiall privation of light, as darkness is totall, {that} is a cessati-
-on of motion in part apt to cause light, if they were duely mo-
-ved; and if a greater light appears it swallows up ye less, snat-
-ching motion from it to it self: hence 'tis that ye sun puts
out fire when it shines strongly upon it; and we cannot see
ye flame of a candle in a window where ye sun doth brightly
shine, so {that} flame may hence take this Definition, fire cau-
-sing light.

[2] the motion of flames tenuious parts is upwards by ye press-
-ure of more heavy adjacent bodies; so {that} it would emerge (like
cork put to ye bottom of water) to ye upper surface of ye atm-
-osphere at least were it not for its natural adhosion to som-
-ething there below; therefore,

[3] its adhosion by ye bottom to some more solid body is only a
receiving a continued supply of Inflameable parts, ye which
once spent ye flame vanishes.

[3] the Effects of fire (besides heat and light mentioned) are vario-
us, of great use for ye service of men, Separation, Demigrati-
-on, exsiccation, induration, fusion, vitrification, elixation,
refocillation.

[1] Separation of Heterogeneous parts, whereof some are carried a-
-bove it; some fall below it.

[1] Carried above it, as smoak or steam, a mixture of light, or
more volatile parts of water, salt, and Sulphur; which before
were in ye composition of ye body burnt. Smoak makes soot
in ye chimney; and a steam is ye ground of Distillation.

[2] falling below it are ashes, and a mixture of Earth and ye fixed
Salt.

[2] Demigration, or making black, by piercing multitudes of small
holes in the surface of ye body, whereby it drinks in light and re-
-flects it not for black is but ye privation of light reflected, as
we see in the hole of any wall which appears black.