Clavius, Christoph
,
In Sphaeram Ioannis de Sacro Bosco commentarius
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Ioan. de Sacro Boſco.
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deremus eandem Lunæ medietatem,
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fig-491-01
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103
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491-01
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http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/491-01
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ſed quando eſt in parte Epicycli infe-
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riori, vna nobis appareret, & </
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>
<
s
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echoid-s17225
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xml:space
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do eſt in ſuperiori parte, altera, vt
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in hac appoſita figuta manifeſtum eſt.
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</
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<
s
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echoid-s17226
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xml:space
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preserve
">Nam dum Luna eſt in parte inferiori
<
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Epicycli, apparebit nobis eius me-
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dietas, in qua litera A; </
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>
<
s
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xml:space
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">Dum vero
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verſatur in parte ſuperiori, obijcietur
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nobis altera medietas, in qua litera
<
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B. </
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<
s
xml:id
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echoid-s17228
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xml:space
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">Sed hoc eſt contra quotidianam
<
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experientiam. </
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>
<
s
xml:id
="
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xml:space
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">Videmus enim per-
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petuo maculas Lunæ ad nos vergere. </
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<
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xml:space
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<
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Ex quo ſequitur, eandem nos ſem-
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per medietatem intueri. </
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>
<
s
xml:id
="
echoid-s17231
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xml:space
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preserve
">Apparet igi-
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tur vanitas Epicycli in Luna. </
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>
<
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xml:space
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">Affert
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quidem Fracaſtorius loco citato alias rationes, quas, quia nullius ſunt mo-
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menti, conſulto prætermittimus.</
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<
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<
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style
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">His</
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>
autem omnibus argumentis facile ſatisfaciemus. </
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<
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xml:space
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">Ad primũ enim re-
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xlink:label
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note-491-01
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xml:space
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">Solutio @
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obiectionis</
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>
ſpondemus, Eccentricos, & </
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>
<
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xml:space
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">Epicyclos moueri circa medium propriũ, hoc eſt
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circa propria centra. </
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>
<
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xml:space
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">Quod autem hoc motu nunc ad terram magis accedãt,
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nunc longius ab ea dimoueantur, hoc non eſt abſurdũ; </
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>
<
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xml:space
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">quia hic acceſſus, & </
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<
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receſſus non fit per lineam rectam, quem ſolum à corporibus cęleſtibus Ari-
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ſtoteles ex cluſit, cũ ſolis elemẽtis conueniat, quæ grauia ſunt, ac leuia. </
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<
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ſi quis contendat, Ariſtotelem contrarium putaſſe, condonãdum ei hoc erit.
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</
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<
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xml:space
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">Locutus eſt enim de illis duntaxat motibus, qui ſuo tempore cogniti erant,
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quales ſunt à medio, & </
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<
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">ad medium per lineam rectam, & </
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<
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xml:space
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">circa mediũ mun-
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di. </
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<
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xml:space
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">Quod ſi motus Eccentricorum, & </
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>
<
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xml:space
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">Epicyclorum ſuo tempore noti fuiſſent,
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non dubito, quin aliter de motu circa medium locutus fuiſſet. </
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<
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xml:space
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">Si vero aduer-
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ſarijs ſolutio hæc non ſatisfacit, probandum illis non erit, omnem motũ cæ-
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leſtem fieri debere circa centrum mundi, quod nunquam aſſequentur. </
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<
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xml:space
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">Non
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enim ad ipſos ſpectat, leges præſcribere motibus cæleſtibus, ſed ad Deũ Opt. </
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Max. </
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">qui infinita ſua bonitate, ac prouidentia iudicauit expedire, ut planetæ
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non in concentricis orbibus ferrentur circa terram.</
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<
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style
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">Secvndam</
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obiectionem ſoluemus, ſi dicamus, omnes orbes Eccentricos,
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note-491-02
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xml:space
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">Solutio 2.
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obiectionis</
note
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etiam illos ſecundũ quid, atq; </
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<
s
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xml:space
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">Epicyclos, perfectiſſime eſſe ſphæricos, quoad
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propria cẽtra. </
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<
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xml:space
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">Superficies enim extimæ oĩum horum orbiũ ſecundum oẽs par-
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tes æqualiter à ſuis centris abſunt. </
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">Neq; </
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<
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">uero obſtat, quòd orbes Eccẽtrici ſe
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cundum quid, craſſiores ſunt una parte, quàm alia: </
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<
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xml:space
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">quia nulla ratio naturalis
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perſuadere poteſt, omnes orbes cæleſtes debere eſſe uniformis, & </
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<
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xml:id
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xml:space
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">æqualis craſ
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ſitiei. </
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<
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xml:space
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">Si uero Ariſtoteles contrariũ docuit, nos ei hac in parte nõ credimus.</
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<
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ad tertium argumentum attinet, uehementer miror, Auerroem,
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<
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xlink:label
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">Solutio 3.
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obiectionis</
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& </
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<
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">Auerroiſtas, quos uerius hac in parte Erroiſtas dixeris, tam infenſo animo
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in Eccentricos, & </
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<
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">Epicyclos ferri.</
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<
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xml:space
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">, ut intelligere noluerint, qua ratione mo-
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ueantur. </
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<
s
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xml:space
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">Non enim duo illi Eccentrici ſecundũ quid ita mouentur, ut pars te
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nuuior unius ſuccedat in locum craſſioris, & </
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<
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">contra, ut ipſi falſo imaginãtur;
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</
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<
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xml:space
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">ſed proportionaliter ita ſimul feruntur, ut perpetuo pars craſſior inferioris
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ſubſit tenuiori parti ſuperioris, & </
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<
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xml:id
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">contra, ſecumq; </
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<
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