Delfino, Federico, De fluxu et refluxu aquae maris, 1559

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SCIENDVM eſt primo, quòd circa numerum ſphæra­
rum
cæleſtium tres ſunt opiniones diuerſæ: una eſt philoſo­
phorum
, & aſtrologorum Indorum, quæ eſt, quòd ſphæræ
cæleſtes
ſint octo tantum, uidelicet ſeptem ſphæræ planeta­
rum
, & octaua ſphæra ſtellata, quæ eſt primum mobile ſecun
dum
iſtam opinionem; quæ mouetur motu diurno, uidelicet
in
una die naturale, quæ eſt tempus uiginti quatuor hora­
rum
, una reuolutione completa, ab oriente ſcilicet uerſus oc
cidentem
, reuoluendo ſecum tali motu omnes alias ſphæras
inferiores
.
alia eſt Ptolomæi, Alfragræni Alchabitii, Ioannis
de
Sacrobuſto, & Thebit; qui ſphæræ cæleſtes ſint nouem:
& hæc opinio eſt bipartita, quia Ptolemæus, Alfragrænus Al­
chabitius
, & Ioannes de Sacrobuſto dicunt, quòd nona ſphæ
ra
eſt primum mobile, & quòd ipſa eſt illa, quæ mouetur mo
tu
diurno, reuoluendo omnes alias ſphæras inferiores, uide­
licet
octauam, & ſeptimam ſphæram ſeptem planetarum ſe­
cum
: & quòd octaua ſphæra, & aliæ inferiores ei mouentur
duplici
motu: uno uidelicet diurno, quo reuoluuntur à nona
omni
die naturali, una reuolutione completa: & alio pro­
prio
octauæ tardo, ſcilicet ad contrarium nonæ ſphæræ ſuper
polis
zodiaci ſui exiſtentibus in directo polorum zodiaci no­
ſemper; adeo quòd ſemper zodiacus octauæ eſt ſub zodia­
ci
nonæ ſphæræ eclipticæ octauæ ſub ecliptica nonæ, & poli
zodiaci
octauæ ſub polis zodiaci nonæ, in centum annis uno
gradu
uerſus orientem contrariæ, & taliter, quòd ſemper
clipticæ
octauæ ſphæræ eſſent ſub ecliptica nonæ.
aliæ autem
ſphæræ
inferiores octauæ, ultra iſtos duos motus, habent
motus
ſibi proprios ab occidente uerſus orientem, ut in

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