Blancanus, Josephus, Sphaera mvndi, sev cosmographia demonstratiua , ac facile methodo tradita : in qua totius Mundi fabrica, vna cum nouis, Tychonis, Kepleri, Galilaei, aliorumq' ; Astronomorum adinuentis continentur ; Accessere I. Breuis introductio ad geographiam. II. Apparatus ad mathematicarum studium. III. Echometria, idest Geometrica tractatio de Echo. IV. Nouum instrumentum ad Horologia

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          <head xml:id="echoid-head7" xml:space="preserve">PRÆFATIO.</head>
          <p style="it">
            <s xml:id="echoid-s70" xml:space="preserve">PRopoſitum mihi est Tractatum de Sphæra conſcribere, quẽ aptius forte Coſmographiam
              <lb/>
            dixerim: </s>
            <s xml:id="echoid-s71" xml:space="preserve">in ea enim non ſolum illos decem or dinarios circulos, vt moris est explicabo:
              <lb/>
            </s>
            <s xml:id="echoid-s72" xml:space="preserve">verum etiam de omnibus Mundi partibus, Elementis videlicet, Cælis atq: </s>
            <s xml:id="echoid-s73" xml:space="preserve">Syderibus,
              <lb/>
            ea omnia, & </s>
            <s xml:id="echoid-s74" xml:space="preserve">quidem abstruſiora, ſcituque iucundiora, ac dignior a pertractabo quæ ſo-
              <lb/>
            lent à peritioris Aſtronomis in penitiori Aſtronomia, multaingenij ſubtilitate demon-
              <lb/>
            ſtrari. </s>
            <s xml:id="echoid-s75" xml:space="preserve">ea ſunt partium hanc Mundi Fabricam componentium, or do, magnitudines, com-
              <lb/>
            menſurationes, figuræ, motus, illuminationes; </s>
            <s xml:id="echoid-s76" xml:space="preserve">ex quibus Mundanæ huius Architesturæ conſtructio, quæ
              <lb/>
            nihil præſt antior in hac rerum vniuerſitate ſciri poteſt, mir abiliter elucet: </s>
            <s xml:id="echoid-s77" xml:space="preserve">Quæ quidem omnia non ſolũ
              <lb/>
            nuda in medium proferam, verum quantumuis abſtruſa, Mathematicis demonſtrationihus, & </s>
            <s xml:id="echoid-s78" xml:space="preserve">verò fa-
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            cillimis comprobabo; </s>
            <s xml:id="echoid-s79" xml:space="preserve">in quibus demonstrãdis conſulto abſtincbo ab illis impeditis rationibus, quibus pla-
              <lb/>
            norum out ſphæricorum triangulorum doctrina, atq; </s>
            <s xml:id="echoid-s80" xml:space="preserve">adeò ſinuum tangẽtium, ſecantium, tædioſis intri-
              <lb/>
            catiſq; </s>
            <s xml:id="echoid-s81" xml:space="preserve">calculationibus, neceſſariaest. </s>
            <s xml:id="echoid-s82" xml:space="preserve">verum vtar methodo adeo facili, & </s>
            <s xml:id="echoid-s83" xml:space="preserve">clara, vt allatæ à nobis argu-
              <lb/>
            mentationes à quibuſuis, penè etiã ageometretis, intelligi queant. </s>
            <s xml:id="echoid-s84" xml:space="preserve">Ea propter vereor @e mihi Astronomiæ
              <lb/>
            peritiores iure ſuccenſeant, quòd eorum abdita, atq; </s>
            <s xml:id="echoid-s85" xml:space="preserve">admir anda quæque quodammodo prosiituerim, ac
              <lb/>
            in vulgus duxerim propalanda. </s>
            <s xml:id="echoid-s86" xml:space="preserve">Ad hanc porrò ſcriptionem iucundam hiſce rationibus adductus ſum.</s>
            <s xml:id="echoid-s87" xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:id="echoid-s88" xml:space="preserve">Prima fuit rerum Aſtronomicarum noua atq; </s>
            <s xml:id="echoid-s89" xml:space="preserve">admir anda inuenta: </s>
            <s xml:id="echoid-s90" xml:space="preserve">hoc enim eruditißimo Ae
              <unsure/>
            uo com-
              <lb/>
            plures ſyderum cultores, atq; </s>
            <s xml:id="echoid-s91" xml:space="preserve">obſeruatores ſolertiſsimi extiterunt, quorum diligenti opera, magna ſy-
              <lb/>
            der ali huic ſcientiæ acceſsio facta est. </s>
            <s xml:id="echoid-s92" xml:space="preserve">præterea mirabili illud Teleſcopij recens Opticorum inuentum,
              <lb/>
            plurima mortalibus, anteactis omnibus ſæculis ignota, cælitus commonstrauit. </s>
            <s xml:id="echoid-s93" xml:space="preserve">vnde eiuſdem etiam ſcien
              <lb/>
            tiæ magnum factum est incrementum. </s>
            <s xml:id="echoid-s94" xml:space="preserve">Ea propter viſum est tandem præſentibus, ac conſultiſsimis
              <lb/>
            Aſtronomis (quos in hac re Authores ſequor) nouam quoq; </s>
            <s xml:id="echoid-s95" xml:space="preserve">Sphæram isthæc omnia complectentem cudi
              <lb/>
            oportere. </s>
            <s xml:id="echoid-s96" xml:space="preserve">inter quos præcipuus, atq; </s>
            <s xml:id="echoid-s97" xml:space="preserve">inſtar omniũ ſufficiat hoc loco P. </s>
            <s xml:id="echoid-s98" xml:space="preserve">Clauius, qn
              <unsure/>
            i in vltima ſuæ Spharæ
              <lb/>
            editione to. </s>
            <s xml:id="echoid-s99" xml:space="preserve">3. </s>
            <s xml:id="echoid-s100" xml:space="preserve">ſuorum operum. </s>
            <s xml:id="echoid-s101" xml:space="preserve">pag. </s>
            <s xml:id="echoid-s102" xml:space="preserve">75. </s>
            <s xml:id="echoid-s103" xml:space="preserve">moriturientẽ imit atus olorem, ſic cecinit: </s>
            <s xml:id="echoid-s104" xml:space="preserve">@olo tamen hoc loco, le-
              <lb/>
            ctorem latere, instrumentũ quoddam in Belgio nuper eſſe repertũ, quo cernuntur plurimæ Stellæ in Fir-
              <lb/>
            mamento, quæ ſine eo, nullo modo videri poſſunt; </s>
            <s xml:id="echoid-s105" xml:space="preserve">Luna quoq; </s>
            <s xml:id="echoid-s106" xml:space="preserve">quando est ſemiplena mirũ in modum fra-
              <lb/>
            cta, & </s>
            <s xml:id="echoid-s107" xml:space="preserve">a ſper a apparet: </s>
            <s xml:id="echoid-s108" xml:space="preserve">præterea eodem instrumento, Venerem recipere lumen à Sole instar Lunæ fit ma-
              <lb/>
            nifestum, nã quaſi alter a Lunula corniculata nunc magis, nunc minus cernitur, Saturnus quoq; </s>
            <s xml:id="echoid-s109" xml:space="preserve">habet
              <lb/>
            duas Stellas ſe minores, ſibiq; </s>
            <s xml:id="echoid-s110" xml:space="preserve">coniũctas. </s>
            <s xml:id="echoid-s111" xml:space="preserve">Iupiter habet quatuer Stellas erraticas: </s>
            <s xml:id="echoid-s112" xml:space="preserve">vt diligenter, & </s>
            <s xml:id="echoid-s113" xml:space="preserve">accu-
              <lb/>
            ratè Galilæus in Nuntio ſydereo, & </s>
            <s xml:id="echoid-s114" xml:space="preserve">alibi literis mandauit, quæ cum ita ſint, videãt Astronomi quo pacto
              <lb/>
            orbescælestes conſtituendi ſint, vt hæc phænomena ſaluari poſsint. </s>
            <s xml:id="echoid-s115" xml:space="preserve">Hactenus P. </s>
            <s xml:id="echoid-s116" xml:space="preserve">Clauius: </s>
            <s xml:id="echoid-s117" xml:space="preserve">quibus veterẽ
              <lb/>
            Aſtronomiam tot nouitatibus auctã noua indigere reſt aur atione indicat: </s>
            <s xml:id="echoid-s118" xml:space="preserve">quapropter nouã quoq; </s>
            <s xml:id="echoid-s119" xml:space="preserve">Sphæ-
              <lb/>
            ram neceſſario conſcribendam eſſe coram multis ſæpius edixit, quæ cuncta hæc noua
              <unsure/>
            compræhenderet, ne
              <lb/>
            Astronomiæ Tyrones, ac cæteros eius candidatos huc illuc ad varios libellos diſtrahi oporteret.</s>
            <s xml:id="echoid-s120" xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:id="echoid-s121" xml:space="preserve">Secunda mihi cauſa fuit Auditorum meorum neceſsitas, ij enim ſingulis annis mecum conquereban-
              <lb/>
            tur nullam extare Sphæram, quæ certa, claræ
              <unsure/>
            , ac demonſtratiua methodo ſyderalis ſcientiæ Iſagogem
              <lb/>
            traderet. </s>
            <s xml:id="echoid-s122" xml:space="preserve">vt igitur eorum commodo conſulerem prouinciam hanc non detrectaui.</s>
            <s xml:id="echoid-s123" xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:id="echoid-s124" xml:space="preserve">Tertia tandem, vt plurium alioquin Doctorum virorum iuſto deſiderio, ac precibus morem gererẽ, qu@
              <lb/>
            præſtantiſsimè ſyderum doctrinæ percupidi, obſcuritate tamen Astronomicorum librorum abſterriti,
              <lb/>
            plurimo labore irrito, votis ſuis adeo iuſtis defraudabantur. </s>
            <s xml:id="echoid-s125" xml:space="preserve">Hiſcè igitur præcipuè de cauſis, tractatio-
              <lb/>
            nem hanc amplexus ſum, qua faciles, perſpicuæq; </s>
            <s xml:id="echoid-s126" xml:space="preserve">adeò demonſtrationes exhibentur, vt inde Lectores
              <lb/>
            ſcientificè res Aſtronomicas omnium pulcherrimas, ac iucundiſsimas, magna del@ctatione haurire poſ-
              <lb/>
            ſint, atq; </s>
            <s xml:id="echoid-s127" xml:space="preserve">præstantiſsimam hanc philoſophiam adipiſci.</s>
            <s xml:id="echoid-s128" xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:id="echoid-s129" xml:space="preserve">Cæterum prolegomena illa, quæ de inuentoribus deque Astronomiæ partibus præmitti ſolent: </s>
            <s xml:id="echoid-s130" xml:space="preserve">partim
              <lb/>
            ex noſtra clarorum Mathematicorum Chronologia, quam vna cum locis Ariſtotelis Mathematicis edidi-
              <lb/>
            mus; </s>
            <s xml:id="echoid-s131" xml:space="preserve">partim ex Apparatu ad Mathematicas addiſcendas, quẽ huic operi ſubnectemus, ſuppleri poterunt.
              <lb/>
            </s>
            <s xml:id="echoid-s132" xml:space="preserve">Quæ vero de ipſius præſtantia iucunàitate, atq; </s>
            <s xml:id="echoid-s133" xml:space="preserve">vtilitate, pręponi in more est, cùm apud omnes, authores
              <lb/>
            omnibus ſint ob@
              <unsure/>
            ia, viſum eſt ſuperuacaneum ea nũc iterum repetere; </s>
            <s xml:id="echoid-s134" xml:space="preserve">hoc tamen vnico Plato@e ex ſepti-
              <lb/>
            mo de Repub. </s>
            <s xml:id="echoid-s135" xml:space="preserve">loco contentierimus. </s>
            <s xml:id="echoid-s136" xml:space="preserve">Oculus, nimirum, animæ, qui ab alijs ſtudijs obcæcatur, defodi-
              <lb/>
            @urq́; </s>
            <s xml:id="echoid-s137" xml:space="preserve">à Mathematicis ſolis recreatur, ac reuiuiſcit. </s>
            <s xml:id="echoid-s138" xml:space="preserve">quapropter huc conſonat illud C. </s>
            <s xml:id="echoid-s139" xml:space="preserve">Manlij carmen;</s>
            <s xml:id="echoid-s140" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s141" xml:space="preserve">Ornarires ipſa negat, contenta doceri.</s>
            <s xml:id="echoid-s142" xml:space="preserve"/>
          </p>
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