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-div391" type="section" level="1" n="284">
          <p>
            <s xml:id="echoid-s16479" xml:space="preserve">
              <pb o="191" file="0213" n="218" rhead="Liber Decimũsoctauus."/>
            tis tantummodo horarum numereris. </s>
            <s xml:id="echoid-s16480" xml:space="preserve">ſi igitur iſtud Horologium, ita muro exactè auſtrali applicetur, vt
              <lb/>
            linea meridiana ſit horlzonti perpendicularis, ſimulque linea horæ 12. </s>
            <s xml:id="echoid-s16481" xml:space="preserve">ſit horizonti paralella, & </s>
            <s xml:id="echoid-s16482" xml:space="preserve">hora 23.
              <lb/>
            </s>
          </p>
        </div>
        <div xml:id="echoid-div396" type="section" level="1" n="287">
          <head xml:id="echoid-head305" style="it" xml:space="preserve">De alijs Horologijs Aſtronomicis, & Babylonicis.</head>
          <p>
            <s xml:id="echoid-s16533" xml:space="preserve">EX præmiſſis facilè erit cuiq; </s>
            <s xml:id="echoid-s16534" xml:space="preserve">ſtudioſo, ac induſtrioſo, reliqua Horologiorum genera ex materiali ſphæ-
              <lb/>
            ra deſcribere: </s>
            <s xml:id="echoid-s16535" xml:space="preserve">nam pro Aſtronomico diuiſio tropicorum, & </s>
            <s xml:id="echoid-s16536" xml:space="preserve">æquatoris in 24. </s>
            <s xml:id="echoid-s16537" xml:space="preserve">partes, debet à meridia-
              <lb/>
            no incipere, ac in eundem deſinere, procedendo verſus occidentem. </s>
            <s xml:id="echoid-s16538" xml:space="preserve">pro Babylonico inchoanda eſt diuiſio
              <lb/>
            ab horizonte ortiuo, procedendo ſupernè occaſum verſus, contra quam factum eſt in Italico, quia hæc duo
              <lb/>
            Horologia ſunt alterum alterius inuerſum: </s>
            <s xml:id="echoid-s16539" xml:space="preserve">vnde ſequitur Horologium Italicum conuerti poſſe in Babylo-
              <lb/>
            nicum, hac ratione.</s>
            <s xml:id="echoid-s16540" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s16541" xml:space="preserve">Italicum Horologium ſit primo conſtitutum in ſua poſitione Aſtronomica, in qua horas oſtendere de-
              <lb/>
            bet, & </s>
            <s xml:id="echoid-s16542" xml:space="preserve">poſtea ita inuertatur, vt pars occidentalis fiat orientalis, & </s>
            <s xml:id="echoid-s16543" xml:space="preserve">contra. </s>
            <s xml:id="echoid-s16544" xml:space="preserve">quæ conuerſio ſiat circa lineam
              <lb/>
            meridianam, tanquam axem manentem. </s>
            <s xml:id="echoid-s16545" xml:space="preserve">Hac facta conuerſione lineæ omnes erunt infra, ideſt, in ſuper-
              <lb/>
            ficie, quæ nunc deorſum aſpiciet; </s>
            <s xml:id="echoid-s16546" xml:space="preserve">ſtylus etiam deorſum tendet. </s>
            <s xml:id="echoid-s16547" xml:space="preserve">Imaginemur iam haſce lineas ſurſum tran-
              <lb/>
            ſparere, vti facerent in ſubtiliori charta delineatæ. </s>
            <s xml:id="echoid-s16548" xml:space="preserve">hæ lineæ ſic tranſparentes adamuſſim repræſentabunt
              <lb/>
            Horologium Babylonicum. </s>
            <s xml:id="echoid-s16549" xml:space="preserve">ſi igitur in parte ſuperiori, vbi tranſparent delineentur, pro vt tranſpa ent,
              <lb/>
            ſtiluſque etiam ſurſum inuertatur, abſolutum erit Horologium, quod horas ab ortu indicabit. </s>
            <s xml:id="echoid-s16550" xml:space="preserve">Rurſus hoc
              <lb/>
            Horologium Babylonicum ſi conſtitutum ſit ad latitudinem gr. </s>
            <s xml:id="echoid-s16551" xml:space="preserve">45. </s>
            <s xml:id="echoid-s16552" xml:space="preserve">commutari poteſt in duo Horologia
              <lb/>
            verticalia primaria, auſtrale, & </s>
            <s xml:id="echoid-s16553" xml:space="preserve">boreale, commutatis numeris, & </s>
            <s xml:id="echoid-s16554" xml:space="preserve">cæteris proportionaliter factis, vt in Ita-
              <lb/>
            lico. </s>
            <s xml:id="echoid-s16555" xml:space="preserve">Quapropter eadem opera, qua Italicum conſtruitur, conſtruuntur ſimul ſex Horologia, quod ſanè
              <lb/>
            iucundum, ac mirum eſt: </s>
            <s xml:id="echoid-s16556" xml:space="preserve">tria videlicet Italica; </s>
            <s xml:id="echoid-s16557" xml:space="preserve">& </s>
            <s xml:id="echoid-s16558" xml:space="preserve">tria itidem Babylonica. </s>
            <s xml:id="echoid-s16559" xml:space="preserve">Hæc ſatis ſint pro inſti@uto. </s>
            <s xml:id="echoid-s16560" xml:space="preserve">plu-
              <lb/>
            ra alia ſolers lector ex materiali ſphæra deducere poteſt ex prædictis. </s>
            <s xml:id="echoid-s16561" xml:space="preserve">præſertim qua ratione ex ea accipi poſ-
              <lb/>
            ſint altitudines Solis ſupra horizontem pro ſingulis horis in tropicis, & </s>
            <s xml:id="echoid-s16562" xml:space="preserve">æquatore, ex quibus poſtea confici
              <lb/>
            poſſint varia Horologium genera.</s>
            <s xml:id="echoid-s16563" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div397" type="section" level="1" n="288">
          <head xml:id="echoid-head306" xml:space="preserve">L. D. D. P. V.</head>
        </div>
      </text>
    </echo>
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