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-div135" type="section" level="1" n="85">
          <pb o="65" file="0085" n="89" rhead="Liber Octauus."/>
        </div>
        <div xml:id="echoid-div136" type="section" level="1" n="86">
          <head xml:id="echoid-head95" style="it" xml:space="preserve">Cap. IIII. Seu de numero Cælorum, & Magnitudine.</head>
          <p>
            <s xml:id="echoid-s6344" xml:space="preserve">AN tota cæleſtis regio in plures cælos re ipſa diſtinctos diuidatur, haud ita facile eſt determinare, vt non-
              <lb/>
            nulli exiſtimant; </s>
            <s xml:id="echoid-s6345" xml:space="preserve">qua de ie nonnullorum Philoſophorum rogatu, nonnulla ex aliorum ſententia, @n me-
              <lb/>
            dium afferam, non vt ego quidquam de ea ſtatuam, ſed vt ipſi, quorum id munus eſt, de ea ſententiam tãdem
              <lb/>
            aliquam ferre valeant. </s>
            <s xml:id="echoid-s6346" xml:space="preserve">ſciendum igitur primo eſt veteres Aſtronomos, Hipparchum, Ptolomæu@n, & </s>
            <s xml:id="echoid-s6347" xml:space="preserve">alios
              <lb/>
            de hac cælorum diſtinctione, nihil certi loquutos eſſe, vt videre eſt apud Ptolemæum, & </s>
            <s xml:id="echoid-s6348" xml:space="preserve">alios; </s>
            <s xml:id="echoid-s6349" xml:space="preserve">verum ipſi
              <lb/>
            hypotheticè loquebantur, nam poſita tali cælorum diuifione aut numero excuſantur apparentiæ, & </s>
            <s xml:id="echoid-s6350" xml:space="preserve">obſer-
              <lb/>
            uationes. </s>
            <s xml:id="echoid-s6351" xml:space="preserve">imo ipſi vt videre eſt apud Ptolemæum, & </s>
            <s xml:id="echoid-s6352" xml:space="preserve">Proclum, haſce cælorũ fabricas hypotheſes vocabant,
              <lb/>
            hodieque eruditiores vocant. </s>
            <s xml:id="echoid-s6353" xml:space="preserve">Hanc vero opinionem de reali cælorum diſtinctione in populum ſparſere
              <lb/>
            olim Eudoxus, & </s>
            <s xml:id="echoid-s6354" xml:space="preserve">Calippus, & </s>
            <s xml:id="echoid-s6355" xml:space="preserve">poſtea ſemipriſci, ac ſemibarbari ſcriptores tractatuũ de Sphęra, aut de Theo-
              <lb/>
            ricis planetarum, qui vt populo, atque alijs Aſtronomiæ ignaris res miras venditarent, tales cælorum con-
              <lb/>
            ſtructiones eccentricis, atque epicylis veris, & </s>
            <s xml:id="echoid-s6356" xml:space="preserve">realibus refertas propalarunt; </s>
            <s xml:id="echoid-s6357" xml:space="preserve">& </s>
            <s xml:id="echoid-s6358" xml:space="preserve">quas veteres hypotheſes ap-
              <lb/>
            pellabant, ipſi ſucceſſu temporis tanquam aſſertiones ſine vlla euidenti ratione enunciarunt; </s>
            <s xml:id="echoid-s6359" xml:space="preserve">ijſque ſimpli-
              <lb/>
            ciores, ac rudiores fidem vltro adhibuerũt, adeo vt Philoſophorum etiam complures ijſdem paulatim aſſen-
              <lb/>
            ſerint. </s>
            <s xml:id="echoid-s6360" xml:space="preserve">Ex hac cælorum hypotheſi in aſſertionem transformata, factum eſt etiam, vt complures cælos ad in-
              <lb/>
            uicem non ſolum diuiſos, ſed etiam duros eſſe deduxerint: </s>
            <s xml:id="echoid-s6361" xml:space="preserve">dum enim intelligebant cælorum diſtinctionem
              <lb/>
            atque eorum munia in aſtris deferen@is, conſequenter etiam de eorum ſoliditate philoſophati ſunt. </s>
            <s xml:id="echoid-s6362" xml:space="preserve">Verum
              <lb/>
            enim vero antiquorum ac recentiorum doctiſſimi, vti ſunt Ptolemæus, Copernicus, Tycho, & </s>
            <s xml:id="echoid-s6363" xml:space="preserve">al@j, per ſolas
              <lb/>
            lineas, aut circulos motus planetarum optimè explicarunt, vt in eorum monumentis videre eſt. </s>
            <s xml:id="echoid-s6364" xml:space="preserve">Omnes ta-
              <lb/>
            men merito exiſtimant octauam Sphæram, ſeu Firmamentũ eſſe corpus ſolidum, ac conſtans, cum in eo ſy-
              <lb/>
            dera veluti confixa, eundem perpetuo ordinem, mutuas diſtantias, ac poſitiones tueantur, atq; </s>
            <s xml:id="echoid-s6365" xml:space="preserve">in eo, ſeu po-
              <lb/>
            tius ab eo irrequieta vertigine reuoluantur. </s>
            <s xml:id="echoid-s6366" xml:space="preserve">qua ratione putandum eſt Firmamentum ab inferiori planeta-
              <lb/>
            rum regione eſſe aliquo modo diſtinctum, & </s>
            <s xml:id="echoid-s6367" xml:space="preserve">diuiſum: </s>
            <s xml:id="echoid-s6368" xml:space="preserve">hæc itaq; </s>
            <s xml:id="echoid-s6369" xml:space="preserve">ſunt huius ſententiæ fundamenta.</s>
            <s xml:id="echoid-s6370" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6371" xml:space="preserve">Ex aduerſo autem multa ſunt quibus recentiores Aſtronomi ſuadent planetarũ regionem non eſſe reapſe
              <lb/>
            in varios cælos diſtinctam. </s>
            <s xml:id="echoid-s6372" xml:space="preserve">in qua ſententia fuerunt etiam veterum nonnulli; </s>
            <s xml:id="echoid-s6373" xml:space="preserve">nam vt Vitruuius, & </s>
            <s xml:id="echoid-s6374" xml:space="preserve">Martia-
              <lb/>
            nus Capella ex veterum Aſtronomorum ſententias litteris mandarunt, Mercurium, ac Venerem circa So-
              <lb/>
            lem ita circulari, vt aliquando ſupra eum, aliquando vero infra ferantur, exiſtimarunt. </s>
            <s xml:id="echoid-s6375" xml:space="preserve">quorum fundamenta
              <lb/>
            ſunt ſequentia: </s>
            <s xml:id="echoid-s6376" xml:space="preserve">primo, qua ratione, hi duo planetæ in proprijs cælis à cælo Solis, necnon ad inuicem diſtin-
              <lb/>
            ctis ferrentur? </s>
            <s xml:id="echoid-s6377" xml:space="preserve">potius aſſerendum videretur eos in eodem ſolis cælo, cum Sole ſpatiari. </s>
            <s xml:id="echoid-s6378" xml:space="preserve">Martis ſtellam ali-
              <lb/>
            quando infra Solis circuitus deſcendere certum eſt ex Tychone, quo igitur iure in alienum cælum ingre-
              <lb/>
            ditur? </s>
            <s xml:id="echoid-s6379" xml:space="preserve">quo modo illud perforat? </s>
            <s xml:id="echoid-s6380" xml:space="preserve">3. </s>
            <s xml:id="echoid-s6381" xml:space="preserve">Nonne inquiunt in eodem Iouis cælo alij quatuor planetæ ipſius aſſeclæ
              <lb/>
            eum perpetuo comitantur? </s>
            <s xml:id="echoid-s6382" xml:space="preserve">Demum eodem ſpectant Cometæ, qui ſupra Lunam in planetaria regione efful-
              <lb/>
            gent, atq; </s>
            <s xml:id="echoid-s6383" xml:space="preserve">in tranſuerſum proprijs motibus gradiuntur: </s>
            <s xml:id="echoid-s6384" xml:space="preserve">(Porrò quæ hic de Planetis, & </s>
            <s xml:id="echoid-s6385" xml:space="preserve">Cometis aſſumũtur,
              <lb/>
            ſuis locis oſtendentur.) </s>
            <s xml:id="echoid-s6386" xml:space="preserve">Quapropter ex prænotatis deducunt cælos planetarum eſſe tantummodo quaſdam
              <lb/>
            cæli regiones aut partes, in quibus ipſi ſuos circuitus ducũt, quas partes non neceſſe ſit eſſe re ipſa aliquo con-
              <lb/>
            finio inuicem diſtinctas, & </s>
            <s xml:id="echoid-s6387" xml:space="preserve">diuiſas, quæ mutuo ob proprios motus perpetuo confricentur. </s>
            <s xml:id="echoid-s6388" xml:space="preserve">Lectores igitur ex
              <lb/>
            his, atq; </s>
            <s xml:id="echoid-s6389" xml:space="preserve">etiam alijs ſtatuant, quod mag is veritati conſonum videatur.</s>
            <s xml:id="echoid-s6390" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6391" xml:space="preserve">Quod ſpectat ad totius cæli magnitudinem, impoſſibile eſt eam hoc loco vllatenus determinare, cum ea
              <lb/>
            ex ſingulorum cęlorum tanquam partium magnitudinibus per partes inueſtigetur; </s>
            <s xml:id="echoid-s6392" xml:space="preserve">inueſtigandæ igitur ſunt
              <lb/>
            prius ſingulorum craſſities, antequam totius cæli craſſitiem, ac proinde magnitudinem aſſequamur. </s>
            <s xml:id="echoid-s6393" xml:space="preserve">Erit
              <lb/>
            autem craſſities eius ſemidiametr. </s>
            <s xml:id="echoid-s6394" xml:space="preserve">terræ ſaltem 13,
              <unsure/>
            948,
              <unsure/>
            .</s>
            <s xml:id="echoid-s6395" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6396" xml:space="preserve">De lumine Cæleſtis regionis, nihil noui occurrit, præter id, quod in tract. </s>
            <s xml:id="echoid-s6397" xml:space="preserve">de Mundo dictum eſt.</s>
            <s xml:id="echoid-s6398" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div137" type="section" level="1" n="87">
          <head xml:id="echoid-head96" xml:space="preserve">LIBER NONVS
            <lb/>
          DELVNA.</head>
          <p>
            <s xml:id="echoid-s6399" xml:space="preserve">ABſoluta iam Elementari Mundi parte, atque etiam generali Cæli tractatione conſequens eſt, vt
              <lb/>
            ad particularem conſcendamus; </s>
            <s xml:id="echoid-s6400" xml:space="preserve">in qua primo Luna occurrit, alterum vniuerſi luminare, quod
              <lb/>
            veluti nocturnus Sol noctem lumine perfundit, quodque ſecundas inter cæleſtia corpora digni-
              <lb/>
            tatis partes obtinet.</s>
            <s xml:id="echoid-s6401" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div138" type="section" level="1" n="88">
          <head xml:id="echoid-head97" style="it" xml:space="preserve">De loco Lunæ. Cap. I.</head>
          <p>
            <s xml:id="echoid-s6402" xml:space="preserve">1 LVnam ſuas reuolutiones ſupra Sphæram Elementarem, atque etiam Aetherem proximè peragere, & </s>
            <s xml:id="echoid-s6403" xml:space="preserve">
              <lb/>
            proinde eam inter planetas ordine primam ac citimam ſupra innuimus; </s>
            <s xml:id="echoid-s6404" xml:space="preserve">nunc autem probare conten-
              <lb/>
            dimus. </s>
            <s xml:id="echoid-s6405" xml:space="preserve">Et primo quidem euidentiſſima eſt illa ratio, quæ deſumitur ab eclypſibus, ſeu occultationibus plane-
              <lb/>
            tarum: </s>
            <s xml:id="echoid-s6406" xml:space="preserve">manifeſtum enim eſt planetam illum qui alterum nobis occultat eo eſſe inferiorem, ideo enim </s>
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