. . . I shall conclude with proposing only some Queries, in
order to a further 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 (ceteris paribus)
strongest at the least distance?

Qu. 2. Do not the rays which differ in refrangibility differ also
in flexibility; and are they not by their different inflections sep-
arated from one another, so as after separation to make the colors
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 backward and forward, with
a motion like that of an eel? And do not the three fringes of
colored light above mentioned 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 circum-
stances?

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 colors do, by reason that the light falling on
them is not reflected outward 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 sul-

-135-