order to a farther search to be made by others.
_Query_ 1. Do not Bodies act upon Light at a distance, and by their
action bend its Rays; and is not this action (_c teris paribus_)
strongest at the least distance?
_Qu._ 2. Do not the Rays which differ in Refrangibility differ also in
Flexibity; and are they not by their different Inflexions separated from
one another, so as after separation to make the Colours in the three
Fringes above described? And after what manner are they inflected to
make those Fringes?
_Qu._ 3. Are not the Rays of Light in passing by the edges and sides of
Bodies, bent several times backwards and forwards, with a motion like
that of an Eel? And do not the three Fringes of colour'd Light
above-mention'd arise from three such bendings?
_Qu._ 4. Do not the Rays of Light which fall upon Bodies, and are
reflected or refracted, begin to bend before they arrive at the Bodies;
and are they not reflected, refracted, and inflected, by one and the
same Principle, acting variously in various Circumstances?
_Qu._ 5. Do not Bodies and Light act mutually upon one another; that is
to say, Bodies upon Light in emitting, reflecting, refracting and
inflecting it, and Light upon Bodies for heating them, and putting their
parts into a vibrating motion wherein heat consists?
_Qu._ 6. Do not black Bodies conceive heat more easily from Light than
those of other Colours do, by reason that the Light falling on them is
not reflected outwards, but enters the Bodies, and is often reflected
and refracted within them, until it be stifled and lost?
_Qu._ 7. Is not the strength and vigor of the action between Light and
sulphureous Bodies observed above, one reason why sulphureous Bodies
take fire more readily, and burn more vehemently than other Bodies do?
_Qu._ 8. Do not all fix'd Bodies, when heated beyond a certain degree,
emit Light and shine; and is not this Emission perform'd by the
vibrating motions of their parts? And do not all Bodies which abound
with terrestrial parts, and especially with sulphureous ones, emit Light
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