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-div322" type="section" level="1" n="228">
          <pb o="155" file="0177" n="182" rhead="Liber Decimusquintus."/>
        </div>
        <div xml:id="echoid-div323" type="section" level="1" n="229">
          <head xml:id="echoid-head244" style="it" xml:space="preserve">De duobus Saturni Comitibus. Cap. VII.</head>
          <p>
            <s xml:id="echoid-s13859" xml:space="preserve">MIrabile eſt illud quoque, quod circa Saturnũ mirabili Teleſcopio noſtræ tempeſtati Aſtronomi rimati,
              <lb/>
            ac parirer mirati ſunt; </s>
            <s xml:id="echoid-s13860" xml:space="preserve">ipſum videlicet duobus paruis ſtipari comitibus, ſicuti Iouem quatuor. </s>
            <s xml:id="echoid-s13861" xml:space="preserve">qui cum
              <lb/>
            Saturno in linea æquatori paralella conſtituuntur, quemadmodum comites Iouis cum eo in linea eclipticæ
              <lb/>
            paralella. </s>
            <s xml:id="echoid-s13862" xml:space="preserve">ſuntque aliquando adeo Saturno proximi, vt non diſtinguan-
              <lb/>
              <figure xlink:label="fig-0177-01" xlink:href="fig-0177-01a" number="102">
                <image file="0177-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/0177-01"/>
              </figure>
            tur ab eo, ſed eum oualem apparere efficiant, vt in figura B. </s>
            <s xml:id="echoid-s13863" xml:space="preserve">aliquando
              <lb/>
            ab eo plane diſtinguuntur, vt in figura C. </s>
            <s xml:id="echoid-s13864" xml:space="preserve">ſed illud omnino mirum, quod
              <lb/>
            eum Galilæus, & </s>
            <s xml:id="echoid-s13865" xml:space="preserve">alijs duobus totis annis, & </s>
            <s xml:id="echoid-s13866" xml:space="preserve">amplius, eos continuo Sa-
              <lb/>
            turno aſſiſtere conſpexiſſent, poſtea euanuerunt, nec quid de illis factum
              <lb/>
            ſit audio quidquam, quod inopinatum ſpectaculum obſeruatores ſtupi-
              <lb/>
            dos tenet ac mirabundos. </s>
            <s xml:id="echoid-s13867" xml:space="preserve">ego ad finem huius Octobris anni 1616. </s>
            <s xml:id="echoid-s13868" xml:space="preserve">oualem ac cum duabus maculis rotundis
              <lb/>
            ad vtrumque vertice conſpicio, qualem prima figura A. </s>
            <s xml:id="echoid-s13869" xml:space="preserve">oſtendit in quo ſtatu adhuc perſeuerat hoc menſe.
              <lb/>
            </s>
            <s xml:id="echoid-s13870" xml:space="preserve">Nouembri 1619. </s>
            <s xml:id="echoid-s13871" xml:space="preserve">quo hæc imprimuntur. </s>
            <s xml:id="echoid-s13872" xml:space="preserve">vide Galilæum in lib. </s>
            <s xml:id="echoid-s13873" xml:space="preserve">de maculis circa finem; </s>
            <s xml:id="echoid-s13874" xml:space="preserve">necnon Diſquiſitio-
              <lb/>
            nes Mathematicas Pater Chriſtophori Scheiner noſtræ Soc.</s>
            <s xml:id="echoid-s13875" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div325" type="section" level="1" n="230">
          <head xml:id="echoid-head245" xml:space="preserve">LIBER DECIMVSSEXTVS
            <lb/>
          DE COMETIS.</head>
          <p>
            <s xml:id="echoid-s13876" xml:space="preserve">PLacet hoc loco poſt tractatum de perpetuis, & </s>
            <s xml:id="echoid-s13877" xml:space="preserve">ordinarijs planetis ſubijcere tractatũ de Co-
              <lb/>
            metis, quandoquidem multi ex recentioribus Aſtronomis pleroſq; </s>
            <s xml:id="echoid-s13878" xml:space="preserve">omnes Cometas, quot-
              <lb/>
            quot ipſi videlicet obſeruarũt, eos in planetaria cæli regione depræhenderunt, vnde etiam
              <lb/>
            ijſdem placuit planetas extraordinarios, ac temporaneos appellare Cometas. </s>
            <s xml:id="echoid-s13879" xml:space="preserve">Neque vero
              <lb/>
            hæc, de cæleſtibus Cometis ſententia (vt parum eruditi exiſtimant) noua eſt, ſed omnibus
              <lb/>
            ſæculis quibus philoſophatum eſt coæua; </s>
            <s xml:id="echoid-s13880" xml:space="preserve">nam teſtibus Ariſtotile, Seneca, & </s>
            <s xml:id="echoid-s13881" xml:space="preserve">alijs Py@hago-
              <lb/>
            rici, & </s>
            <s xml:id="echoid-s13882" xml:space="preserve">Italica ſecta, aſſerebant Cometam eſſe vnã ex ſtellis errantibus, ſed longis poſt tem-
              <lb/>
            porum interuallis apparere; </s>
            <s xml:id="echoid-s13883" xml:space="preserve">idem ſenſerunt Hippocrates Chius ex eodem Ariſtotile, necnon Diogenes ex
              <lb/>
            Plutarcho de placitis Philos. </s>
            <s xml:id="echoid-s13884" xml:space="preserve">Chaldæi etiam Aſtronomorum antiquiſſimi, vt refert Apollonius Mindius
              <lb/>
            apud Plutarchus Cometas in planetarum numero ponebant. </s>
            <s xml:id="echoid-s13885" xml:space="preserve">quibus aſſentitur ipſe Apollonius Mindius. </s>
            <s xml:id="echoid-s13886" xml:space="preserve">Se-
              <lb/>
            neca poſtea ſæculo non tam vetuſto, pluribus enixè contendit Cometas non tantum cæleſtes eſſe, verum.
              <lb/>
            </s>
            <s xml:id="echoid-s13887" xml:space="preserve">etiam inter æterna naturæ opera ponit. </s>
            <s xml:id="echoid-s13888" xml:space="preserve">vide eius lib. </s>
            <s xml:id="echoid-s13889" xml:space="preserve">7. </s>
            <s xml:id="echoid-s13890" xml:space="preserve">nat. </s>
            <s xml:id="echoid-s13891" xml:space="preserve">qu. </s>
            <s xml:id="echoid-s13892" xml:space="preserve">cap. </s>
            <s xml:id="echoid-s13893" xml:space="preserve">22. </s>
            <s xml:id="echoid-s13894" xml:space="preserve">& </s>
            <s xml:id="echoid-s13895" xml:space="preserve">23. </s>
            <s xml:id="echoid-s13896" xml:space="preserve">propinquiori poſtea æuo, in ea-
              <lb/>
            dem ſententia perſeuerauit Albumazar magni inter Arabes nominis; </s>
            <s xml:id="echoid-s13897" xml:space="preserve">vt tradit Cardanus de ſubtilitate. </s>
            <s xml:id="echoid-s13898" xml:space="preserve">& </s>
            <s xml:id="echoid-s13899" xml:space="preserve">
              <lb/>
            ſuperiori nobis ſæculo, idem Cardanus citato lib. </s>
            <s xml:id="echoid-s13900" xml:space="preserve">de ſubtilitat
              <unsure/>
            e idem demonſtrare conatus eſt. </s>
            <s xml:id="echoid-s13901" xml:space="preserve">noſtra deniq; </s>
            <s xml:id="echoid-s13902" xml:space="preserve">
              <lb/>
            ætate, qua Aſtrologicę obſeruationes, magnis ac fabrefactis organis etiam circa Cometas habentur, hanc per
              <lb/>
            omnes ætates deductam opinionem veram eſſe, conſultiſſimi Aſtronomiæ luculentiſſimè comprobare ni-
              <lb/>
            tuntur. </s>
            <s xml:id="echoid-s13903" xml:space="preserve">Verum antequam eorum argumenta afferamus, præſtat de Cometarum accidentibus, per apparen-
              <lb/>
            tias, & </s>
            <s xml:id="echoid-s13904" xml:space="preserve">obſeruationes depræhenſis, pertractare.</s>
            <s xml:id="echoid-s13905" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div326" type="section" level="1" n="231">
          <head xml:id="echoid-head246" style="it" xml:space="preserve">Figura Cometarum. Cap. I.</head>
          <p>
            <s xml:id="echoid-s13906" xml:space="preserve">VAriæ ſunt Cometarum figuræ, quarum duæ ſunt præcipuæ: </s>
            <s xml:id="echoid-s13907" xml:space="preserve">Alij enim crines vndique in orbem vi-
              <lb/>
            brant, qui criniti, cincinnati, & </s>
            <s xml:id="echoid-s13908" xml:space="preserve">Cometæ propriæ appellantur: </s>
            <s xml:id="echoid-s13909" xml:space="preserve">Alij vero ad vnam tantum partem.
              <lb/>
            </s>
            <s xml:id="echoid-s13910" xml:space="preserve">barbam, aut caudam radioſam demittunt, hique barbati, caudatique dicuntur. </s>
            <s xml:id="echoid-s13911" xml:space="preserve">Porro Cometa græca vox
              <lb/>
            eſt, nam Kομητης, comatum, ſeu crinitum ſignificat: </s>
            <s xml:id="echoid-s13912" xml:space="preserve">à Kομη, qua coma latinè dicitur.</s>
            <s xml:id="echoid-s13913" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div327" type="section" level="1" n="232">
          <head xml:id="echoid-head247" style="it" xml:space="preserve">Magnitudo apparens Cometarum.</head>
          <p>
            <s xml:id="echoid-s13914" xml:space="preserve">MInimi ſunt inſtar vnius maximæ ſtellæ fixæ; </s>
            <s xml:id="echoid-s13915" xml:space="preserve">maximi inſtar Solis; </s>
            <s xml:id="echoid-s13916" xml:space="preserve">nam teſte Seneca, Neronis tempore,
              <lb/>
            Cometas vnus Solem magnitudine adæquauit. </s>
            <s xml:id="echoid-s13917" xml:space="preserve">alij ſuas magnitudines inter haſce extremas multipli-
              <lb/>
            ci varietate medias continent. </s>
            <s xml:id="echoid-s13918" xml:space="preserve">vbi illud maximè notandum, eundem Cometam non ſeruare eandem figuræ
              <lb/>
            magnitudinem, ſed eam iuxta motum quem habet proprium, variare, non enim vt videbimus, æquabiliter
              <lb/>
            incedunt; </s>
            <s xml:id="echoid-s13919" xml:space="preserve">quare figuram imminuunt, vel augent, pro vt eorum etiam motus remittitur vel intenditur: </s>
            <s xml:id="echoid-s13920" xml:space="preserve">quod
              <lb/>
            exactè olim Seneca, nunc vero Tycho obſeruarunt, vt ille cap. </s>
            <s xml:id="echoid-s13921" xml:space="preserve">8. </s>
            <s xml:id="echoid-s13922" xml:space="preserve">de Cometis: </s>
            <s xml:id="echoid-s13923" xml:space="preserve">hic vero in Cometa anni 1577.
              <lb/>
            </s>
            <s xml:id="echoid-s13924" xml:space="preserve">enarrat. </s>
            <s xml:id="echoid-s13925" xml:space="preserve">nonnulli initio magni apparent, poſtea paulatim minuuntur, vt amplius diſcerni nequeant; </s>
            <s xml:id="echoid-s13926" xml:space="preserve">alij
              <lb/>
            eontra initio ſunt parui, demum decreſcunt vſq; </s>
            <s xml:id="echoid-s13927" xml:space="preserve">ad apparentem interitum.</s>
            <s xml:id="echoid-s13928" xml:space="preserve"/>
          </p>
        </div>
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