1greſſe I make is not in plano, but about the circumference of the
Terreſtrial Globe, which at every ſtep changeth inclination in
reſpect to Heaven, and conſequently maketh the ſame change
in the Inſtrument which is erected upon the ſame.
Terreſtrial Globe, which at every ſtep changeth inclination in
reſpect to Heaven, and conſequently maketh the ſame change
in the Inſtrument which is erected upon the ſame.
SAGR. You ſay very well: And you know withal, that by
how much the bigger that circle ſhall be upon which you move,
ſo many more miles you are to walk, to make the ſaid ſtar to
riſe that ſame degree higher; and that ſinally if the motion
wards the ſtar ſhould be in a right line, you ought to move yet
farther, than if it were about the circumference of never ſo
great a
how much the bigger that circle ſhall be upon which you move,
ſo many more miles you are to walk, to make the ſaid ſtar to
riſe that ſame degree higher; and that ſinally if the motion
wards the ſtar ſhould be in a right line, you ought to move yet
farther, than if it were about the circumference of never ſo
great a
The right line,
and circumference
of an infinite
cle, are the ſame
thing.
and circumference
of an infinite
cle, are the ſame
thing.
SALV. True: For in ſhort the circumference of an infinite
circle, and a right line are the ſame thing.
circle, and a right line are the ſame thing.
SAGR. But this I do not underſtand, nor as I believe, doth
Simplicius apprehend the ſame; and it muſt needs be concealed
from us under ſome miſtery, for we know that Salviatus never
ſpeaks at random, nor propoſeth any Paradox, which doth not
break forth into ſome conceit, not trivial in the leaſt. Therefore
in due time and place I will put you in mind to demonſtrate this,
that the right line is the ſame with the circumference of an
nite circle, but at preſent I am unwilling that we ſhould
rupt the diſcourſe in hand. Returning then to the caſe, I
poſe to the conſideration of Simplicius, how the acceſſion and
receſſion that the Earth makes from the ſaid fixed ſtar which is
neer the Pole can be made as it were by a right line, for ſuch is
the Diameter of the Grand Orb, ſo that the attempting to
gulate the elevation and depreſſion of the Polar ſtar by the
tion along the ſaid Diameter, as if it were by the motion about
the little circle of the Earth, is a great argument of but little
judgment.
Simplicius apprehend the ſame; and it muſt needs be concealed
from us under ſome miſtery, for we know that Salviatus never
ſpeaks at random, nor propoſeth any Paradox, which doth not
break forth into ſome conceit, not trivial in the leaſt. Therefore
in due time and place I will put you in mind to demonſtrate this,
that the right line is the ſame with the circumference of an
nite circle, but at preſent I am unwilling that we ſhould
rupt the diſcourſe in hand. Returning then to the caſe, I
poſe to the conſideration of Simplicius, how the acceſſion and
receſſion that the Earth makes from the ſaid fixed ſtar which is
neer the Pole can be made as it were by a right line, for ſuch is
the Diameter of the Grand Orb, ſo that the attempting to
gulate the elevation and depreſſion of the Polar ſtar by the
tion along the ſaid Diameter, as if it were by the motion about
the little circle of the Earth, is a great argument of but little
judgment.
SIMP. But we continue ſtill unſatisfied, in regard that the
ſaid ſmall mutation that ſhould be therein, would not be
ned; and if this be null, then muſt the annual motion about
the Grand Orb aſcribed to the Earth, be null alſo.
ſaid ſmall mutation that ſhould be therein, would not be
ned; and if this be null, then muſt the annual motion about
the Grand Orb aſcribed to the Earth, be null alſo.
SAGR. Here now I give Salviatus leave to go on, who as I
believe will not overpaſſe the elevation and depreſſion of the
Polar ſtar or any other of thoſe that are fixed as null, although
not diſcovered by any one, and affirmed by Copernicus himſelf
to be, I will not ſay null, but unobſervable by reaſon of its
minuity.
believe will not overpaſſe the elevation and depreſſion of the
Polar ſtar or any other of thoſe that are fixed as null, although
not diſcovered by any one, and affirmed by Copernicus himſelf
to be, I will not ſay null, but unobſervable by reaſon of its
minuity.
SALV. I have already ſaid above, that I do not think that
any one did ever ſet himſelf to obſerve, whether in different times
of the year there is any mutation to be ſeen in the fixed ſtars, that
may have a dependance on the annual motion of the Earth, and
added withal, that I doubted leaſt haply ſome might never have
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