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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)
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C. ap. 2.
ASTRONOMTA.
annus solaris fixus est Fulianus a Julio Caesare authore
nuncupacus, censecurque diebus 365 de horis abundantibus
sex, quae cum quarro demum anno excreseant in diem soli-
dum; hinc est, quod quarius quilque lustri Juliani annus
bissextilis est dierum 3663 dicirur aurem bissextilis a dic
inter 23 ∞ 24 Februarii intercalato, quo tic, uc scribatur bis
(exro Ralendas Marrii.
Fixus aurem quodammodo censeri porest annus nocter
Tulianus, quod incercalaro, uri dictum, quoliber lustro dic
uno, retinentur requinoctia ex solstiria in sedibus suis, Tal-
uim per unius hominis xtarem. Ita nostro eero equinoctium
vernum traeret in 10 die Marcii, autumnale in F3 SePrem.
bris; Colsticium aectirum in er Junii, hybernum in +F De-
cerbris.
Incerim Parendum est, quancieatem anno cributam à Ce
Pare esse nimiam, quae cr fere minuris horx major est justa.
Regui rE illa minura annis rzr excrescune in diem solidum,
ideoque annis 1260, quoc incercedunt inter Concilium Ni-
caenum Pascharis celebrandi terminos instituens, e Greco
rium XIII. Ponciticem eoldem terminos loco moros relti-
mencem, eradune illi dies propemodum 10. Cum enim
Concilii Nicaeni tempore requinoctium vernum hxreret 2C
Marcii, rempore Cresorii deprehenlum est senlim adrepsille
IF Marrii. Ouare cum rectiimere cuperer Pontilex xequi-
noctium pristina sedi, exemir e Kalendario Fuliano dies
illos 10, _ ne deinceps limili modo sublaberentur anni car-
dines, cavic, uc centelimus quisque Erx Christiana annus
communis esset, qui secundum Julium debebat esse bistex.
cilis, ac quartus quisque centesimus urrique bilextilis ma-
neret.
AnnuS Lunaris vagus est duodecim mentium synodico.
rum. Fujusmodi anno hodie ucuntur Turcxe; unde HF, uE
IIIOTUTA MENIES PET OMNES AnNI REMPECaLES VASENEUT ANIS
Circiter 30.
ANnUS Lanaris fixus elt, qui intercalato, anno altero vel
ertio, menseuno, quem embolimeu rOCanE, retINet annI
cardines.