Iust so, as the matter of the falling Stars is placed,
they fall either straight down, aside, or upward, as be∣fore
I noted. Even so is it with the Thunder.
Now, as those vapors, thickned in the ayre, doe
produce the afore-said effects; so shall it not bee
thought amisse, to say, that the same ayre, being thick∣ned,
with their vapors, but not condensed in a cloud,
by susception of light, but chiefly from the Suns rayes
opposite to it either by night or day, but chiefly by
night, become fiery coloured, and looke as burning;
the same vapors stirring to, and fro, and being some∣way
thickned, by refraction of light, doe assume un∣to
themselves variable, and diverse colours; and
those fires in effect are the same which vulgarly are
called pretty dancers: and by reason that the materi∣all
cause of such impressions is swift, and soone vani∣sheth,
therefore they abide and remaine the shorter
time; for such phantasmes not being come to the full
perfection of other Meteors, (as seldome they are
seene to doe) so their abode, and being is but short,
and inconstant, they being composed but of hot, and
dry exhalations, from chalky, rocky, sandy and sul∣phureous
parts of the earth, there being a mixture of
moysture with them.
And to the effect, that this may be somewhat better
cleared, we must consider: That foure sorts of va∣pors
are exhaled, or drawne up out of the earth by
vertue of the Sunnes rayes, beside the smoake of
our fires, which ascending to the ayre also augments
these fiery Meteors.
First vapors hot and dry, not having so much hu∣midity
in them, as may be able to overcome them;