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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 138, page id 820424455:0160
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LISYRONOMIA
serrestris maximi, ee ad hunc perpendicularis est axis suus
ad illum veroradius cenrra connectens, quae proinde perpen
diculares in superticie cerrena oftendeni polos urraque lu
circuli. Duidni igitur polus xquaroris otancundem distet à CI
culo illuminationis qy, quantum polus circuli illuminationis V
dictat ab aequarore 90 2703 Nimirum a quadrancibus02
e
e qr ablaca communi portione g270, restancog e 2701
requales. Proderir autem hujus meminisse deinceps.
dem porro rario e, quando cellus vertatur sub v.
Fd
Sec
extra cardines, v. or. Schemate LV. in c vertante rellure,
eminee quoque polus o supra planum illuminarionis m n
rum non inceoris 233. Quod uc incellisatur promiius
exponemus prius refexionis morum, ponquam nunc P
raca habemus, quae illuc perrinent. Concipe planum
minarionis Enderis balin vtram que coni duplicis, _ sectione
conimuneni plani illuminationis _ baleos coni voca Bssura
baleos. Polus vero terrae boreus o semper est in sumt
baleos averix, e polus australis p semper in imo balet
obverta. Liquer, cellure in b, polum o incidere in ENura
mnbaleos averix; rellure inc, polus oreliquie fissuram
baseos averlae arcu no; cellure in d, jam reliquie polu
Alturam mn quadranice circuli no; cellure in o jam polus
reliquic fssuram m n plusquam quadrance, nimirum
n o: acque ica deinceps crescer arcus no (contra serient
rC
prorum ir odn computandus) crescet, inquam, ma
maxisque, donec ilto motu retlexionis polus o semper
dimocus concra signorum seriem magis magisque, compleu
eandem orbem, revolura cerrà per f, C, h, i, usque in 
b
denuo junsitur Doluso cum extremitare Filsurx n. Idem im
ginari licet de polo australi p, digredienre similirer ab m ex
cremitate fssurae baseos obvertae, maxis magisque contr
Periem ligriorum, donec rectimr d rerra in b, junganeur denue
Dolus p. _ extremiras FlTurXm. Arque hic CH MOTUS re
Rexionis Copernico dictus, quo efficitur, ut axis terrae sempet
manear in eodem parallelismo cum tibris crassi axis Xqua
coris coelectis, deleripri capite XVI.