Full text: de Sacrobosco, Johannes: Iohannis de Sacro Bvsto Libellvs de Sphaera : accessit eivsdem avtoris compvtvs ecclesiasticus, et alia quaedam, in studiosorum gratiam edita

S E C VNDVM A ccidens autem diuiditur in
ſphæram rectam & ſphæram obliquam.
I lli autem
dicuntur habere ſphæram rectam, qui manent ſub
æquinoctiali, ſi aliquis ibi manere poßit.
E t dicitur
recta, quia neuter polorum magis altero illis eleua-
tur,
V el quia eorum horizon interſecat æquinoctia-
lem, & interſecatur ab eodem ad angulos rectos
ſphærales.

Illi uero dicuntur habere Sphæram obliquam,
quicunq; habitant citra æquinoctialem uel ultra.

I llis enim ſupra horizontem alter polorum ſemper
eleuatur, alter uero ſemper deprimitur,
V el quoni-
am illorum horizon artificialis interſecat æquino-
ctialem, & interſecatur ab eodem ad angulos obli-
quos & impares.

AEQVI [...]
ORIZON RECT [...]
AEOVI [...]
AXIS
ORIZON O [...]

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