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# Title: Nicolai Mercatoris Holsati, è Soc. Reg. Institutionum Astronomicarum Libri Duo, De Motu Astrorum Communi & Proprio, Secundum Hypotheses Veterum & Recentiorum præcipuas; Deqve Hypotheseon ex observatis constructione (shelfmark Leibn. Marg. 63)
# Folio 141, page id 820424455:0163
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Sect. 20
ASTRONOMIA.
X4L
Per C, h, in usque in b. polus boreuso est Soli a obversue
cirra planum illuminationis mn, alter vero p ulera mn ab-
conditus; unde vicissim concrarium accidet, nimirum dies
exmensium poloo, e noxtocidem mensium polo p. Re-
eamus ad Schema LVI. uc speculacionem hanc tOtam ex-
lauriamus. Tellure sub eo, dixi cropicum capricorni Ws 1 l
majori sui porrione u, ec ancarcticum x y rorum verlari in
hemisphaerio illuminato gvy. Conera vero vides ibidem
ropicum cancri kr es minori sui porrione kF, e arcticum
iu nullarenus illumminari à Sole in centro cclipricae postr
o; adeoque punctum quodris cropici k eo diurius esse in
deseribenda moru diurno majori portione res, quam in min
horiter, hoc est, diurius verlari in renebris, quam in luce.
urtus aurem tellure sub i Cica, radius Solis reo Y directe
lerir linsula puncta cropici cancri eo rk, ordine sibi occur-
cenria; majorque ejus porrio es s, tocusque adeo arcticus
qm, cum inclula Zona trixida borea gon est in luce; dum
Contra cropici capricorni porriomajor W u, rocusque antar-
cticus xy; cum inclusa Zona Frixida australi x p y eA in
lenebet.
ALL aL L
De sEquatione temporis in Systemate motae telluris.
leura LVII. sic projectio Spharx Copernicéa; Polico
Loculo in axe mundi, acque ex intinira distantia directe
adspicience polum aquatoris australem; apparebit LqVAIOK
ac circulus, cujus quadrans tertius sIt m 270, _ celiptica
Cadecin elliplin, cujus quadrans sC H W. In cenero sphXIX
ic C, _ in celiprica nocecur locus telluris medius in MI _
serus in V. Eniimvero nihil obstat, quo minus relAreM ex
pera sua orbica, quam in rexione Plaretarum rerir, creha-
nus secundum lineas medii e reri morits ad ipsum ulque
BPr