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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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dect. 3.
ASTRONOMTA.
DaT) reltar mocus anomaliae verx Lunxe ad eadem intervalla
Sic redeundo ad methosum Problemare VI. expolicam,
dancur ibiciem in Schemare LXIII. anguli ad f ex OTu anO-
malix medixe, ex anguli adsex moru anomalix verx. Onde
legendo eadem calcusi restisia, invenies ee eccencricirarem
ec 2p0L
PROBLEMA XI.
Parallaxin Lunae Xcorizontalem definire.
BIErVETE aCCuTaTC rempuS, quo inirium vel finis ccli-
pleos Solaris incidir, ubi lacirudo apparens Lunxe Cimul
exigua sic vel nulla. Erenim ad idem cempus longicudo Solis
calculo invenra differet à longicudine L unae apparenti tantun-
dem, quancum semidiamerri utriusque Luminaris juncte
efficiuni. Etas vero semidiametros Problema IX. venari
doeuir; ereo nota erir lonsicudo apparens Lunx. Vera
aurem ejusdem longimdo ad idem momenrum supputari porest.
leaque differencia lonsicudinis vera ee apparencis erit parala
laxis longicudinis Lunae. Unde per Problema III. elicierur
Parallaxis alcirudinis primum ad dacum Almucantarach, aC
deinde eriam Elorizontalis.
PROBEEMA XTI.
Diametrum visibilem umbrae terrena indasare.
lSuTA L.XV. CT a Sol, bterra, c cenrrumumbrae, qua
Luna ecransie, cujus umbrae apex delinic ind; hef d (IC
lorizon visibilis, quem urrum que Luminare ndarsine lupe-
Pori tangar. Cerrum est, reitas à cenrro e superticie
TerKE