# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/820424455:0073
# Permalink to this reading: https://leibnizlegible.com/page/820424455:0073?run=74
# 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 51, page id 820424455:0073
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=820424455&page=73
# Source image: https://digitale-sammlungen.gwlb.de/content/820424455/jpgs/default/00000073.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 32 lines, status machine
# Lines: 32 recognised, mean confidence 0.84
# Machine transcription. Not an edition. Errors are expected: about 8% character error rate on Latin and French lines, higher on German.
# Licence: CC BY 4.0, Leibniz Legible. Machine output: do not ingest it as verified text; keep this provenance with the text.
# Wording rule: say "the machine reads it as …", never "Leibniz wrote".
# After the first blank line: the recognised lines in reading order, one per line.

led
O
30
6
Cap. 4.
e
Ouoniam vero ad omnimodam crepusculi cessationer
vulgo requiritur Solis intra Hlorizoncem depressio 18 gra-
duum, acque in Lacitudine 48. 50 Sol in principio eo consti-
turus ipsa nocte media praecise 18 deprimitur intra Hori-
Zoncem; sequitur, quod in locis majorem elevationem poli
habenribus, quam 48.50, Sol Tropicum decurrens mediâ
noete minâs r8 deprimatur, unde nec inirium crepuscula
habebunt, nec finem, sed toram noctem durabunt. Ucisitur
Scias, quando locum inveniar hoc problema; Subtrahe r8
 deprestione Aquaroris maximâ, hoc est, Londini a 38.47.
relinquitur Oeclinatio borea 20. 47, qualis per Conversum
Prob. Imu COMpeTIC F. 29 HC, hecnon 28.77∞ Dum
ioitur Sol peraorat arcum Lclipricae a T. 29 X 3d 28. 71 e0,
crepuscula Londini totas noctes durane, adeoque huic PrO-
blemari locus nullus relinquitur.
Caeceris anni remporibus Fig. XIV. in Triangulo PN∞,
e
ASTRONOMTA.
T. PH Ddistancia polorum A quatoris _ Florizontis,
Londini 38. 47.
2. IO 72 complementum sc. deprestionis solis sut
TIOriZOnteM, quae requiritux L8, ue crepuscula inci-
piane vel delsnanE.
3. PO Complemenium De-Cmaju, Sole in borealibus.
clinationis solis, quadratre  tinus, Sole in australibus.
aeri-