Clavius, Christoph, In Sphaeram Ioannis de Sacro Bosco commentarius

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11Zodiacus:
car
latus po
natur
ab A
ſtronomis
.
VERVM obijciet aliquis, Martem, & Venerem, non ſolum 6. grad. à me-
dio
Zodiaco ſiue in Septentrionem, ſiue in Auſtrum recedere, ſed interdum fe-
re
8.
grad. Quare rectius Zodiaci latitudinem eſſe debere 16. grad. ut nũquam
planetę
extra Zodiacum reperiantur oberrare.
Ad hanc nihilominus obiectio-
nem
reſpondendum eſt, hanc ob cauſam nonnullos Ioan.
Regiom. ſecutos tri-
buere
Zodiaco grad.
16. in latitudine: quod tamen neceſſarium eſſe omnes alij
Aſtronomi
negant.
Dicunt enim, magis eſſe rationi conſentaneũ, ut Zodiacus
ſecundũ
latitudinẽ in 12.
grad. ſecetur, propterea hanc latitudinem nunquã
alij
planetæ excedunt;
Quòd aũt aliquando Mars, & Venus pluribus gradibus
quàm
6.
a medio Zodiaco deuient, id raro admodũ contingit, & ſolum ratione
magnitudinis
epicyclorum, quos habent;
ut hæc deuiatio ſufficiens cauſa eſſe
nequeat
, cur Zodiaco tribuantur grad’ 16.
in latitudine. Accedit etiam, con-
ueniens
eſſe videtur, ut ſicuttotus Zodiacus in longitudine continet 12.
ſigna,
ita
etiam in latitudine totidem partes comprehenderet, nimirum 12.
gradus.
Pari ratione quemadmodũ unus gradus eſt pars trigeſima unius ſigni, ita quo-
que
tota làtitudo Zodiaci eſſet trigeſima pars totius ambitus, ſeu circuitus eiuſ
dem
Zodiaci, cuiuſmodi ſunt 12.
grad. latitudinis, reſpectu 360. gr. longitudi-
nis
.
Denique ſicut ambitus totius Zodiaci in longitudine comprehendit 360.
grad
.
ſic etiã totidem gradus contineret unũ ſignũ in tota area, uel ſuperficie.
Nam
12.
multiplicata per 30. efficiunt 360. grad. aream uidelicet unius ſigni.

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