1body that moveth, one of its extreams ſtanding ſtill without
ching place, the motion muſt needs be circular, and no other: and
becauſe in the living creatures moving, one of its members doth
not ſeparate from the other its conterminal, therefore that motion
is of neceſſity circular.
ching place, the motion muſt needs be circular, and no other: and
becauſe in the living creatures moving, one of its members doth
not ſeparate from the other its conterminal, therefore that motion
is of neceſſity circular.
The Flexures in
animals are not
made for the
verſity of motions.
animals are not
made for the
verſity of motions.
The motions of
animals are of one
ſort.
animals are of one
ſort.
The ends of the
bones are all
tund.
bones are all
tund.
It is
ted, that the ends
of the bones are of
neceſſity to be
tund.
ted, that the ends
of the bones are of
neceſſity to be
tund.
The motions of
animals are all
circular.
animals are all
circular.
SIMP. How can this be? For I ſee the animal move with an
hundred motions that are not circular, and very different from one
another, as to run, to skip, to climbe, to deſcend, to ſwim, and
many
hundred motions that are not circular, and very different from one
another, as to run, to skip, to climbe, to deſcend, to ſwim, and
many
Secondary
ons of animals
pendent on the firſt
ons of animals
pendent on the firſt
SALV. Tis well: but theſe are ſecondary motions, depending
on the preceding motions of the joynts and flexures. Upon the
plying of the legs to the knees, and the thighs to the hips, which
are circular motions of the parts, is produced, as conſequents, the
skip, or running, which are motions of the whole body, and theſe
may poſſibly not be circular. Now becauſe one part of the ter
on the preceding motions of the joynts and flexures. Upon the
plying of the legs to the knees, and the thighs to the hips, which
are circular motions of the parts, is produced, as conſequents, the
skip, or running, which are motions of the whole body, and theſe
may poſſibly not be circular. Now becauſe one part of the ter
reſtrial Globe is not required to move upon another part
able, but that the motion is to be of the whole body, there is no
need in it of flexures.
The Terreſtriall
Globe hath noe
need of flexures.
Globe hath noe
need of flexures.
SIMP. This (will the aduerſary rejoyn) might be, if the
on were but one alone, but they being three, and thoſe very
ferent from each other, it is not poſſible that they ſhould concur in
an ^{*} articulate body.
on were but one alone, but they being three, and thoſe very
ferent from each other, it is not poſſible that they ſhould concur in
an ^{*} articulate body.
* Without joynts
SALV. I verily believe that this would be the anſwer of the
Philoſopher. Againſt which I make oppoſition another way; and
ask you, whether you think that by way of joynts and flexures one
may adapt the terreſtrial Globe to the participation of three
rent circular motions? Do you not anſwer me? Seeing you are
ſpeechleſſe, I will undertake to anſwer for the Philoſopher, who
would abſolutely reply that they might; for that otherwiſe it
would have been ſuperfluous, and beſides the purpoſe to have
poſed to conſideration, that nature maketh the flexions, to the
end, the moveable may move with different motions; and that
therefore the terreſtrial Globe having no flexures, it cannot have
thoſe three motions which are aſcribed to it. For if he had
thought, that neither by help of flexures, it could be rendered apt
for ſuch motions, he would have freely affirmed, that the Globe
could not move with three motions. Now granting this, I intreat
you, and by you, if it were poſſible, that Philoſopher,
thor of the Argument, to be ſo courteous as to teach me in what
manner thoſe flexures ſhould be accommodated, ſo that thoſe
three motions might commodiouſly be excerciſed; and I grant you
four or ſix moneths time to think of an anſwer. As to me, it
eth that one principle onely may cauſe a plurality of motions in
the Terreſtrial Globe, juſt in the ſame manner that, as I told you
before, one onely principle with the help of various inſtruments
Philoſopher. Againſt which I make oppoſition another way; and
ask you, whether you think that by way of joynts and flexures one
may adapt the terreſtrial Globe to the participation of three
rent circular motions? Do you not anſwer me? Seeing you are
ſpeechleſſe, I will undertake to anſwer for the Philoſopher, who
would abſolutely reply that they might; for that otherwiſe it
would have been ſuperfluous, and beſides the purpoſe to have
poſed to conſideration, that nature maketh the flexions, to the
end, the moveable may move with different motions; and that
therefore the terreſtrial Globe having no flexures, it cannot have
thoſe three motions which are aſcribed to it. For if he had
thought, that neither by help of flexures, it could be rendered apt
for ſuch motions, he would have freely affirmed, that the Globe
could not move with three motions. Now granting this, I intreat
you, and by you, if it were poſſible, that Philoſopher,
thor of the Argument, to be ſo courteous as to teach me in what
manner thoſe flexures ſhould be accommodated, ſo that thoſe
three motions might commodiouſly be excerciſed; and I grant you
four or ſix moneths time to think of an anſwer. As to me, it
eth that one principle onely may cauſe a plurality of motions in
the Terreſtrial Globe, juſt in the ſame manner that, as I told you
before, one onely principle with the help of various inſtruments