Apian, Petrus
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Instrvmentvm Sinvvm, sev primi mobilis
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GENVINVS VSVS
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quo ſecundum minus fuerit maxima declinatione Solis, tunc ſubtahe inuentum ſe-
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cundum de maxima Solis declinatione, & </
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<
s
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xml:space
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<
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<
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<
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</
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habebit´ nomen medietatis eclypticæ: </
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<
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lis declinatione, tũc ſubtrahe hanc, & </
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>
<
s
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xml:space
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uabit nomen latitudinis. </
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<
s
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xml:space
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<
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<
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<
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<
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<
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ctum diuide in totum, arcus quotientis dabit declinationem ſtellæ quæſitam. </
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<
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<
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mur & </
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<
s
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<
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dextram, eius longitudo eſt 22. </
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<
s
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<
s
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<
s
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<
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<
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<
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<
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<
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plementum diſtantiæ ab Ariete eſt 7. </
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<
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<
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<
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<
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<
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xml:space
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<
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PLVM
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E
<
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>
</
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>
plementi latitudinis 70. </
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<
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<
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<
s
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xml:space
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">at extota diuiſione remanſit quotiens
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12129. </
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<
s
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<
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<
s
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<
s
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<
s
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<
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<
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<
s
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<
s
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xml:space
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">& </
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<
s
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uentum primum. </
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<
s
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">Ad hæc porrò duco ſinum latitudinis ſtellæ in ſinum totum, productũ
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diuido in ſinum primi inuenti, ſcilicet 99261. </
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<
s
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20. </
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<
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<
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<
s
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<
s
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<
s
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">Et quia ſtella eſt in medietate ſeptentriona
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li, ipſa quo ſtellæ latitudo ſeptentrionalis, ex additione inuenti ſecundi ad maximam
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Solis declinationem, prouenerunt inde 45. </
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<
s
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<
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<
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<
s
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quod & </
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<
s
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<
s
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">Vlterius adhuc ſinum argumenti iam in-
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uenti ſcilicet 69046. </
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<
s
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<
s
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">& </
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<
s
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ueni in quotiente 66536. </
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<
s
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<
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<
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<
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<
s
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lis, quem hactenus quærebam.</
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<
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<
s
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, puta gradum æquatoris, qui cum
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ſtella propoſita meridianum ſiue horizontem rectum attingit.</
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<
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</
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<
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<
s
xml:id
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xml:space
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">Inuenta iam ex ſuperiori pronunciato declinatione ſtellæ uel puncti alicuius, ſinum
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complementi declinationis duc in ſinum totum, productum diuide in ſinum cõplemen-
<
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<
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<
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<
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<
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<
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<
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</
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ti ſtellæ, arcus quotientis dicetur radix aſcenſionis: </
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<
s
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">quòd ſi longitudo ſtellæ ſit in prima
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quadra zodiaci, hoc eſt à principio Arietis ad ſinem Cancri, ſubtrahe tuncradicem il-
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lam à 90. </
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<
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">& </
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<
s
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xml:space
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">remanebit aſcenſio recta ſtellæ, quæ ſi fuerit in ſecunda quadra à principio
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Cancri ad finem Virginis, addes radicem hancad 90. </
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>
<
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<
s
xml:id
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xml:space
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">rurſus habebis aſcenſionem re-
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ctam ſtellæ. </
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<
s
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">Sin autem ſtella in tertia quadra inuenta fuerit, ſubtraheradicem à 90. </
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<
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<
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<
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reſiduum adde ad 180. </
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<
s
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<
s
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">proueniet´ ſic tibi etiam aſcenſio recta: </
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<
s
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xml:space
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">ſed ſi in ultima
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quadra extiterit, ſcilicet à Capricorno uſ ad finem Piſcium, adde radicem inuentam
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ad 270. </
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<
s
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<
s
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<
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<
s
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<
s
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<
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PLVM
<
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E
<
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style
="
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>
</
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>
ſcenſionem rectam quartæ ſtellæ Agitatoris, cuius etiam declinationem inueni ex ſu-
<
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periori pronunciato 43. </
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<
s
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<
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<
s
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<
s
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<
s
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<
s
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<
s
xml:id
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>
<
s
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="
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xml:space
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lius erit diuiſor. </
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<
s
xml:id
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xml:space
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">Inſuper aſſumo & </
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>
<
s
xml:id
="
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xml:space
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">ſinum complemẽti primi inuenti ex proximo pronun
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ciato ſcilicet 6. </
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>
<
s
xml:id
="
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xml:space
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">gra. </
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>
<
s
xml:id
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xml:space
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">58. </
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<
s
xml:id
="
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xml:space
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">mi. </
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<
s
xml:id
="
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xml:space
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">is eſt 12129. </
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>
<
s
xml:id
="
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xml:space
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">& </
s
>
<
s
xml:id
="
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"
xml:space
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">hunc ipſum duco in totum, at diuido in diui-
<
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/>
ſorem, prouenient in quotiente 16652. </
s
>
<
s
xml:id
="
echoid-s6661
"
xml:space
="
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">arcus eius eſt 9. </
s
>
<
s
xml:id
="
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xml:space
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">gra. </
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>
<
s
xml:id
="
echoid-s6663
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xml:space
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">35. </
s
>
<
s
xml:id
="
echoid-s6664
"
xml:space
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">mi. </
s
>
<
s
xml:id
="
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"
xml:space
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">radix illa aſcenſionis
<
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Et quia ſtella iſta eſt in prima quadra, ſubtraho eam à 90. </
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>
<
s
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="
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xml:space
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">& </
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>
<
s
xml:id
="
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"
xml:space
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">manent in reſiduo 80. </
s
>
<
s
xml:id
="
echoid-s6668
"
xml:space
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">gra.
<
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</
s
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<
s
xml:id
="
echoid-s6669
"
xml:space
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">25. </
s
>
<
s
xml:id
="
echoid-s6670
"
xml:space
="
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">mi. </
s
>
<
s
xml:id
="
echoid-s6671
"
xml:space
="
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">aſcenſio recta ſtellæ propoſitæ, at is ipſe gradus cum ſtella meridianum ſeume
<
lb
/>
dium cœli attingit.</
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>
<
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echoid-div194
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<
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xml:id
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echoid-head104
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xml:space
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">PRONVNCIATVM LXXXVIII.</
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>
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<
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echoid-s6673
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">Altitudinem poli ſupra horizontem quacun hora noctis, quum ſtellæ
<
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uidentur, per totum annum ſine omni inſtrumento artificioſe dignoſcere.</
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>
<
s
xml:id
="
echoid-s6674
"
xml:space
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preserve
"/>
</
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<
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<
s
xml:id
="
echoid-s6675
"
xml:space
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">Quod hic docebimus, magni profecto faciundum eſt, ſiquidem nec memini à quo-
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quam antea me illum audiuiſſe, proinde placet & </
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>
<
s
xml:id
="
echoid-s6676
"
xml:space
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preserve
">illum tibi breuiter indicare. </
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<
s
xml:id
="
echoid-s6677
"
xml:space
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preserve
">Vnum ſci
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as, quòd hic de iſtis tantummodo ſtellis dicemus´(breuitatis gratia, quæ declinationem
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habent ſeptentrionalem, ſiquidem de reliquis latius diſſeruimus in noſtris libris Vmbra
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rum. </
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>
<
s
xml:id
="
echoid-s6678
"
xml:space
="
preserve
">Si quando uideris nocte ſtellas duas ſimul horizontem attingere, quod ſingulis fer
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mè quartis ho@aru@@ contingit, quantacun tandem magnitudine fuerint illæ modo
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cognoſci queant, uerifica principio loca earum per 2. </
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>
<
s
xml:id
="
echoid-s6679
"
xml:space
="
preserve
">pronunciati huius, deinde quære
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per 85. </
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<
s
xml:id
="
echoid-s6680
"
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">uel 86. </
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<
s
xml:id
="
echoid-s6681
"
xml:space
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preserve
">earum declinationes, & </
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>
<
s
xml:id
="
echoid-s6682
"
xml:space
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">per 87. </
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<
s
xml:id
="
echoid-s6683
"
xml:space
="
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">aſcenfionem earum rectam, arcum </
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</
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