Apian, Petrus
,
Cosmographia
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[Handwritten note 17]
Page: 63
[Handwritten note 18]
Page: 63
[Handwritten note 19]
Page: 64
[Handwritten note 20]
Page: 65
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106
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APPENDIX.
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<
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xml:space
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<
s
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xml:space
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">QValiter ex ſtellarum fixarum motu, nocturno tem
<
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pore horæ venandæ ſint, paucis abſoluam: </
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<
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xml:space
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">Fiat pri
<
lb
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mùm rotula parua cum manubrio in ſimilitudine
<
lb
/>
rotulæ ſequentis, quam diuide in vigintiquatuor
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lb
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horarum ſpacia. </
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>
<
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xml:space
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">His perfectis, aptabis regulam ſeu
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indicem in longitud. </
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<
s
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xml:space
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">tanta, vt à centro rotulȩ vltra
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lb
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limbum protendatur. </
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<
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xml:space
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">Hanc itaq; </
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<
s
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xml:space
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">regulam pone ſu
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per centrum rotulæ, & </
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<
s
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xml:space
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">fac vnum foramen rotundum, in quod mitta
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lb
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tur clauus cum foramine rotundus, qui ambo conſtringat, ita vt in-
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dex hac atque illac volui poſſit. </
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<
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xml:space
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">Vt patet in Figura ſequenti.</
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<
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44
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106-01
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http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/PUBSU9QD/figures/106-01
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<
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">IN ſtellifera noctis claritate ſubleua rotulam cum manu
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<
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brio verſus ſeptẽtrionem, & </
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donec radius viſualis ab oculo tuo per centrum inſtru-
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menti ad ſtellam polarem tranſeat: </
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">ſimiliter extra rotu-
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lam idem radius ad extremas duas ſtellas maioris vrſæ ſeu rotas plau
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ſtri protendatur, & </
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<
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linea fiduciȩ ſuper radialem lineam incidat. </
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<
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">Tunc enim cõſidera ho-
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ram limbi & </
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<
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">eius partem, quã regula abſcindit, cum qua intra figu-
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ram præcedentẽ, hoc pacto: </
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<
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xml:space
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">Pone indicem maioris vrſæ ſiue plauſtri
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ſuper horam iam inuentam, indice inuariato manẽte, ſituetur regula
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Solis ſua fiduciæ linea ſuper diem tuæ conſiderationis, & </
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inferiori parte limbi horam quæſitam, quam inuenire oportebat.</
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<
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