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

19. CAPITVLVM SECVNDVM
de circulis, ex quibus Sphæra materialis com-
ponitur, & illa ſupercœleſtis (quam
hæc refert) componi intel-
ligitur.

20. CIRCVLORVM DIVISIO.

[figure]

CIRCVL O-
rum, ex quibus ſphæ
ra componitur, qui-
dam ſunt maiores,
ut ſenſui patet,
M a-
ior autem circulus
in ſphæra dicitur,
qui deſcriptus in ſu-
perficie ſphæræ ſu-
per eius centrum, di
uidit ſphæram in
duo æqualia.
M inor
uero, qui deſcriptus
in ſuperficie ſphæræ, eam non diuidit in duo æqua-
lia, ſed in portiones inæquales.
  I nter circulos ue-
ro maiores primo dicendum est de æquinoctiali.

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