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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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AAPPENDEX.
Periodorum quinupla (hoc est, selquiplicaca eripla) unde
lummum hunc cornirem consicir 80 diebus periodum Puam
complere. Alrer acque interior Sacurni Comes detectus
mense Decembri exeuntis anni 1672 revolvitur diebus 4,
horis 13.
Pnario, De Jove e ejus satellitibus. Anno 1620, dic
Pan. hora sequenris noctis prima, primum derecti fuère
Galileo Sacellires Toris rres, _ die 13 ejuldem mensis,
quartus. Duorum rerolutiones postmodum à Simone Mario
in Mundo ejus Joviali detiniea lune hujusmodi: Rerolvitur
nimirum
Primac inti. Secunda
Terria
Duaria
D. h. Min. Sec.) D. H. min. sec. (D. h. min. scc. (D. hor. min. (ec
1 28 28 30(3 231800(703 56 3416 1809 15
Et de rerolurione ipsius corporis Toris exhibemus Lectori
obserrationem Cl. Castini, qui ANnO 1672, nocte, qua
sequebatur diem primum Marrii, hora 7 Z resperrind obser-
varie maculam, qua nulla est masis conspicua in corpore
Poris, Cicam in australiori balcheo, cujus diamerer decimam
quali parrem aequat diamerri joris, _ cujus centrum cum
Proxime accessit ad cenrrum Joris, distac ab hoc criente
fere semidiamerri ipsius Foris. Hanc igirur maculam memo-
raro remporis articulo Cassini vidic Parissis in medio balchei
e eadem nocte hor. 5. min. 26. mane deprehendic eam
Praecise rediisse ad eundem lirum. Ondepraedixit, cam die
3Marr. hOr. 9. min. 8. resperi rursus risuram in medio bal-
thei, id quod, observatione tacta, ita erenisse compro-
batum fuic. Flinc, _ ex pluribus aliis observationibus, de
tinira est revolurio hujus macula, adeoque ipsius corporis
Povis circa axem suum, quod compleatur horis 9. miv. 55.
lec. 58. Ouare assumca Epocha superius memorata, de
adhibita reguatione remporis, qux debecur mocui Solisre-
pectu quatoris, nec non inaequalicari mocus fovis prime
quivis celescopio idoneo instructus, distanciam Meridiani cu-
julris a Parisino leri operE obtinere porest.
Onin