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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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ASTRONOMIA.
Clinari inventus. Contra perigeum
exieyeli inctinati f pless dictar ab Feliprica a Y, quam i peri-
seum exicreli incidenm inidem cum orbica planum cliY.
Vix aurem porest Lachudo maxima pervenire, in Saturno
quidem ad gradus 2, Cmin. 5 vel 6: in Tore ad grad. 1
in c apogeo cpieset
de
ex min. iridem 5 AuE6; i Marre demim ad Bradus 7.
10)
laL et
De Theoria Veneris.
AOcus Veneris in lonsimmdinem secundum Prolemaum
d. Leodem circulorum ex linearum apparatu sander,
quo superiorum Planetarum, iisdem que terminis explicatur.
Lliam mocus Eccentrici e Epicyeli in ealdem parres rendunt,
quanquam non eadem lege gubernarur mocus Eccenrricihic
atque illic. Dux enim in Superioribus Planeris Colura erat
inea medii morus, ea hic lineae medii motus Solis adeo alli-
Saca est, ut sic prortus eadem. Dico TE lineam Figurx
XLIII. in Venere semper congruere cum linea medii morus
Solis, cui semper parallela est B D (quam ob hoc etiam
ineam medii mocus appellare liceat) a cerrro aequantis BDCC
centrum exicreli D extenla.
2. Licet aurem inrequalitas, qua Veneri accidic propter
tuocum Eccentrici morui Solis congruentem videri possic li-
Sata (itidem ac alcera, quae ab Epicyelo deriratur) habenda
elt tamen vero ac sano sensu solura, quod scilicet nec Solis,
nec Eccentrici Veneris motus congrectui Veneris e Solis
alligatus sit, sed possir illa huic conjunsi, in quocunque can-
dem Eccenerici loco cenrum Epicyeli reperiatur.
3. Sequitur aurem perperuam illam connexionem linearum
medii morus Solis ac Veneris aliud quiddam, proprer quod
hujus phaenomena plurimum differune a Superiorum phano-
penis: nimirum, quod ipsa Venus nunquam postic erapuri
a Sole