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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        <div xml:id="echoid-div261" type="section" level="1" n="176">
          <p>
            <s xml:id="echoid-s12247" xml:space="preserve">
              <pb o="131" file="0153" n="158" rhead="Liber Decimus."/>
            idem accidit, vteumq; </s>
            <s xml:id="echoid-s12248" xml:space="preserve">eleuatus ſit ſuper horizontem, ſi tamen nube adeo tenui tegatur, vt per eam ſatis tran-
              <lb/>
            ſpareat. </s>
            <s xml:id="echoid-s12249" xml:space="preserve">Se cundo quando Sol clariſſimus eſt, præponatur vitrum colore aliquo opacum, ille Teleſcopij vi-
              <lb/>
            tro, cui oculus apponi ſolet, ſic enim nimius fulgor retunditur, vnde tuto Solem, quamuis fulgidiſſimum, in-
              <lb/>
            ſtar Aquilarum intueri poſſumus, atq; </s>
            <s xml:id="echoid-s12250" xml:space="preserve">ipſius maculas detegere. </s>
            <s xml:id="echoid-s12251" xml:space="preserve">Tertio item per Teleſcopium abſq; </s>
            <s xml:id="echoid-s12252" xml:space="preserve">illo opa-
              <lb/>
            cato vitro, nec inſpicientes per ipſum, ſed hoc modo; </s>
            <s xml:id="echoid-s12253" xml:space="preserve">Teleſcopium in Solem dirigatur, & </s>
            <s xml:id="echoid-s12254" xml:space="preserve">obfirmetur, ita vt
              <lb/>
            Solis radius per ſuperius vitrum I
              <unsure/>
            nferius ingrediens, & </s>
            <s xml:id="echoid-s12255" xml:space="preserve">per inferius egrediens, in albam chartam excipia-
              <lb/>
            tur. </s>
            <s xml:id="echoid-s12256" xml:space="preserve">in illa enim ro unda illuminatione ſolares maculæ perſpicuè apparebunt. </s>
            <s xml:id="echoid-s12257" xml:space="preserve">idque tanto perfectius, quanto
              <lb/>
            in opaciori loco fuerit charta: </s>
            <s xml:id="echoid-s12258" xml:space="preserve">quapropter ſolent circa inferius Teleſcopij extremum aliam ſolidiorem char
              <lb/>
            tam circumponere, quæ inſtar vmbellæ, prædictam chartam inumbret. </s>
            <s xml:id="echoid-s12259" xml:space="preserve">perfectius quoque id aſſequemur, ſi
              <lb/>
            Teleſcopij pars ſuperior extra foramen alicuius feneſtræ, pars vero inferior intra obſcurum conclaue, emi-
              <lb/>
            neat, in illis enim tenebris, omnes vel minimæ conſpiciuntur. </s>
            <s xml:id="echoid-s12260" xml:space="preserve">quo autem longius charta ab inſtrumento re-
              <lb/>
            ceſſerit, eo maiores ac euidentiores euadunt. </s>
            <s xml:id="echoid-s12261" xml:space="preserve">Hic porrò modus per commodus eſt, cum ſine vlla oculi mo-
              <lb/>
            leſtia, aut labore, imo magna cnm delectatione cernantur. </s>
            <s xml:id="echoid-s12262" xml:space="preserve">Quarto abſque Teleſcopio, ſic in lignea feneſtra
              <lb/>
            cubiculi cuiuſpiam, fiat exiguum foramen, deinde feneſtris ac ianuis clauſis, tenebroſum reddatur conclaue,
              <lb/>
            ita vt per ſolum illud foramen Solis radius illabatur, qui in obiectam chartam appulſus, omnes maculas cla-
              <lb/>
            riſſimè manifeſtabit. </s>
            <s xml:id="echoid-s12263" xml:space="preserve">atq; </s>
            <s xml:id="echoid-s12264" xml:space="preserve">hic modus certiſſimus eſt, cum omni inſtrumentorum ſuſpitione vacet. </s>
            <s xml:id="echoid-s12265" xml:space="preserve">Illud an-
              <lb/>
            dem aduertendum duobus hiſce vltimis modis, maculas apparere inuerſo ſitu, ab eo quem in ſolari diſco ob-
              <lb/>
            tinent; </s>
            <s xml:id="echoid-s12266" xml:space="preserve">dextræ enim fiunt ſiniſtræ, & </s>
            <s xml:id="echoid-s12267" xml:space="preserve">ſuperiores fiunt inferiores; </s>
            <s xml:id="echoid-s12268" xml:space="preserve">cuius cauſa eſt rad orum Solis decuſſatio
              <lb/>
            propè foramen, vti ſuperius tactum eſt. </s>
            <s xml:id="echoid-s12269" xml:space="preserve">cum igitur hi modi in macularum reuelatione couſentiant, nullus
              <lb/>
            reſtat dubitandi locus, quo minus eas concedamus.</s>
            <s xml:id="echoid-s12270" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s12271" xml:space="preserve">Illud autem non ignorandum, numerum ac diſpoſitionem macularum quotidie variari, ita vt aliquando
              <lb/>
            plures, aliquando pauciores; </s>
            <s xml:id="echoid-s12272" xml:space="preserve">quandoque conſtipatiores, quandoque laxiores appareant. </s>
            <s xml:id="echoid-s12273" xml:space="preserve">nonnullæ primo
              <lb/>
            apparere incipiunt in medio Solis; </s>
            <s xml:id="echoid-s12274" xml:space="preserve">aliæ vero quæ primo ex vna parte apparuerunt, poſtea circa Solis me-
              <lb/>
            dium euanuerunt. </s>
            <s xml:id="echoid-s12275" xml:space="preserve">apponam tamen vnam ſaltem figuram, qua conſpectæ ſunt a Galilæo die 9. </s>
            <s xml:id="echoid-s12276" xml:space="preserve">Iunij, Anni
              <lb/>
            2612. </s>
            <s xml:id="echoid-s12277" xml:space="preserve">ex eius Italico libro de maculis.</s>
            <s xml:id="echoid-s12278" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div262" type="section" level="1" n="177">
          <head xml:id="echoid-head190" style="it" xml:space="preserve">Motus macularum.</head>
          <p>
            <s xml:id="echoid-s12279" xml:space="preserve">PRimo ſe dant in conſpectum in parte Solis orientali, & </s>
            <s xml:id="echoid-s12280" xml:space="preserve">in de per ſolarem diſcum incedunt paulatim ver-
              <lb/>
            ſus partem occidentalem, quouſque euaneſcant. </s>
            <s xml:id="echoid-s12281" xml:space="preserve">viæ autem earum ſunt eclypticæ pararellæ. </s>
            <s xml:id="echoid-s12282" xml:space="preserve">vt in figura
              <lb/>
            ſequenti macula C. </s>
            <s xml:id="echoid-s12283" xml:space="preserve">apparuit primo in D, orientali Solis lim-
              <lb/>
              <figure xlink:label="fig-0153-01" xlink:href="fig-0153-01a" number="93">
                <image file="0153-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0153-01"/>
              </figure>
            bo, deinde perlineam punctualem D E. </s>
            <s xml:id="echoid-s12284" xml:space="preserve">eclypticæ A B. </s>
            <s xml:id="echoid-s12285" xml:space="preserve">pa-
              <lb/>
            ralellam, inceſſit paulatim ad E. </s>
            <s xml:id="echoid-s12286" xml:space="preserve">occidentis limbum, vbique
              <lb/>
            viſui ſe ſubtraxit. </s>
            <s xml:id="echoid-s12287" xml:space="preserve">Has porrò vias, ſeu totam Solis faciem
              <lb/>
            tranſigunt diebus circiter 15. </s>
            <s xml:id="echoid-s12288" xml:space="preserve">eſtque earum motus in princi-
              <lb/>
            pio ac fine ſignior, quam circa medium. </s>
            <s xml:id="echoid-s12289" xml:space="preserve">Ipſæ vero in prin-
              <lb/>
            cipio ac fine apparent breuiores, & </s>
            <s xml:id="echoid-s12290" xml:space="preserve">graciliores, quam circa
              <lb/>
            medium. </s>
            <s xml:id="echoid-s12291" xml:space="preserve">Præterea apud Solis limbos, ſeu margines magis
              <lb/>
            nigricant, quam propè medium; </s>
            <s xml:id="echoid-s12292" xml:space="preserve">quia ſcilicet ibi obliquè, ac
              <lb/>
            ſecundum latus ſpectantur; </s>
            <s xml:id="echoid-s12293" xml:space="preserve">ita vt priores partes, poſteriores
              <lb/>
            occultent: </s>
            <s xml:id="echoid-s12294" xml:space="preserve">ſicque totæ denſiores, & </s>
            <s xml:id="echoid-s12295" xml:space="preserve">opaciores euadant quam
              <lb/>
            in medio, vbi directè, ac ſecundum latitudinem, quæ tenu-
              <lb/>
            uior eſt, viſuntur; </s>
            <s xml:id="echoid-s12296" xml:space="preserve">ſicque magis lumen Solic eas peruadens
              <lb/>
            conſpicuum fit, vnde & </s>
            <s xml:id="echoid-s12297" xml:space="preserve">ipſæ
              <unsure/>
            magis clareſcunt. </s>
            <s xml:id="echoid-s12298" xml:space="preserve">vnde colligi-
              <lb/>
            tur eas non omnino opacas eſſe, ſed aliquatenus inſtar nu-
              <lb/>
            bium, tranſparentes. </s>
            <s xml:id="echoid-s12299" xml:space="preserve">Quæ omnia innuunt ea circulari-
              <lb/>
            ter circa Solem reuolui; </s>
            <s xml:id="echoid-s12300" xml:space="preserve">vel cum ipſo Sole ſpatio menſtruæ
              <lb/>
            conuerſionis circumuerti: </s>
            <s xml:id="echoid-s12301" xml:space="preserve">quam ſententiam Galilæus pu-
              <lb/>
            tat probabilem.</s>
            <s xml:id="echoid-s12302" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div264" type="section" level="1" n="178">
          <head xml:id="echoid-head191" style="it" xml:space="preserve">Figura macularum.</head>
          <p>
            <s xml:id="echoid-s12303" xml:space="preserve">OMnes ſunt figura admodum irregulari, & </s>
            <s xml:id="echoid-s12304" xml:space="preserve">varia, eamq; </s>
            <s xml:id="echoid-s12305" xml:space="preserve">ſubinde variant. </s>
            <s xml:id="echoid-s12306" xml:space="preserve">Primo enim contractiores, & </s>
            <s xml:id="echoid-s12307" xml:space="preserve">
              <lb/>
            graciliores ſe præbent, poſtea latiores, ac tandem latiſſimæ circa medium iter, poſtea iterum gracile-
              <lb/>
            ſcunt. </s>
            <s xml:id="echoid-s12308" xml:space="preserve">ſæpe etiam quæ vna initio videbatur, poſtea in plures diuiditur. </s>
            <s xml:id="echoid-s12309" xml:space="preserve">Ex quibus earum figura ali
              <unsure/>
            quate-
              <lb/>
            nus plana eſſe conuincitur: </s>
            <s xml:id="echoid-s12310" xml:space="preserve">cum enim Sol ſit ſphæricus, & </s>
            <s xml:id="echoid-s12311" xml:space="preserve">maculæ vel cum ipſo, vel circa ipſum moueantur,
              <lb/>
            neceſſario in ipſius extremitatibus obliquè, & </s>
            <s xml:id="echoid-s12312" xml:space="preserve">in latera cernentur, vnde & </s>
            <s xml:id="echoid-s12313" xml:space="preserve">contractiores. </s>
            <s xml:id="echoid-s12314" xml:space="preserve">circa medium ve-
              <lb/>
            ro directè, ſiue ſecundum planitiem, & </s>
            <s xml:id="echoid-s12315" xml:space="preserve">frontem, quam nobis obuerrunt, ſpectantur; </s>
            <s xml:id="echoid-s12316" xml:space="preserve">quapropter eti
              <unsure/>
            am la-
              <lb/>
            tiores, & </s>
            <s xml:id="echoid-s12317" xml:space="preserve">ampliores ſe præbent. </s>
            <s xml:id="echoid-s12318" xml:space="preserve">Eadem de cauſa, vna plures aliquando euadit; </s>
            <s xml:id="echoid-s12319" xml:space="preserve">quia nimirum in principio,
              <lb/>
            fiue in margine Solis vna poſt alteram latebat; </s>
            <s xml:id="echoid-s12320" xml:space="preserve">quæ poſtea Solis medio appropinquantes, paulatim emer-
              <lb/>
            gunt, atque ab inuicem ſeparari videntur. </s>
            <s xml:id="echoid-s12321" xml:space="preserve">quia videlicet vna non amplius eſt ante altera, vt ipſam occul-
              <lb/>
            tare queat.</s>
            <s xml:id="echoid-s12322" xml:space="preserve"/>
          </p>
        </div>
      </text>
    </echo>
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