1he likewiſe granteth to mixt bodies compound motions by -----
SAGR. Stay a little, Simplicius, & anſwer me to the queſtions
I ſhall ask you. You ſay that the Load-ſtone is no ſimple body,
now I defire you to tell me what thoſe ſimple bodies are, that
mingle in compoſing the Load-ſtone.
I ſhall ask you. You ſay that the Load-ſtone is no ſimple body,
now I defire you to tell me what thoſe ſimple bodies are, that
mingle in compoſing the Load-ſtone.
Ariſtole grants
a compound motion
to mixt bodies.
a compound motion
to mixt bodies.
SIMP. I know not how to tell you th'ingredients nor ſimples
preciſely, but it ſufficeth that they are things elementary.
preciſely, but it ſufficeth that they are things elementary.
SALV. So much ſufficeth me alſo. And of theſe ſimple
mentary bodies, what are the natural motions?
mentary bodies, what are the natural motions?
SIMP. They are the two right and ſimple motions, ſurſum
and deorſum.
and deorſum.
SAGR. Tell me in the next place? Do you believe that the
motion, that ſhall remain natural to that ſame mixed body, ſhould
be one that may reſult from the compoſition of the two ſimple
natural motions of the ſimple bodies compounding, or that it
may be a motion impoſſible to be compoſed of
motion, that ſhall remain natural to that ſame mixed body, ſhould
be one that may reſult from the compoſition of the two ſimple
natural motions of the ſimple bodies compounding, or that it
may be a motion impoſſible to be compoſed of
The motion of
mixt bodies ought
to be ſuch as may
reſult from the
compoſition of the
motions of the
ple bodies
pounding.
mixt bodies ought
to be ſuch as may
reſult from the
compoſition of the
motions of the
ple bodies
pounding.
SIMP. I believe that it ſhall move with the motion reſulting
from the compoſition of the motions of the ſimple bodies
pounding, and that with a motion impoſſible to be compoſed of
theſe, it is impoſſible that it ſhould move.
from the compoſition of the motions of the ſimple bodies
pounding, and that with a motion impoſſible to be compoſed of
theſe, it is impoſſible that it ſhould move.
SAGR. But, Simplicius, with two right and ſimple motions, you
ſhall never be able to compoſe a circular motion, ſuch as are the
ſhall never be able to compoſe a circular motion, ſuch as are the
two, or three circular motions that the magnet hath: you ſee
then into what abſurdities evil grounded Principles, or, to ſay
better, the ill-inferred conſequences of good Principles carry a
man; for you are now forced to ſay, that the Magnet is a
ture compounded of ſubſtances elementary and cœleſtial, if you
will maintain that the ſtraight motion is a peculiar to the
ments, and the circular to the cœleſtial bodies. Therefore if
you will more ſafely argue, you muſt ſay, that of the integral
bodies of the Univerſe, thoſe that are by nature moveable, do all
move circularly, and that therefore the Magnet, as a part of the
true primary, and integral ſubſtance of our Globe, pertaketh of
the ſame qualities with it. And take notice of this your fallacy,
in calling the Magnet a mixt body, and the Terreſtrial Globe a
ſimple body, which is ſenſibly perceived to be a thouſand times
more compound: for, beſides that it containeth an hundred an
hundred matters, exceeding different from one another, it
taineth great abundance of this which you call mixt, I mean
of the Load-ſtone. This ſeems to me juſt as if one ſhould call
bread a mixt body, and ^{*} Pannada a ſimple body, in which there
is put no ſmall quantity of bread, beſides many other things
ble. This ſeemeth to me a very admirable thing, amongſt others