Vitruvius, De architectura libri decem, 1567

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              li cirunferentia ad aliam partem perlongum ducta axis dicitur. </s>
              <s xml:id="echoid-s9980" xml:space="preserve">His ita poſitis addeſcriptionem uolutæ acce
                <lb/>
              dendum. </s>
              <s xml:id="echoid-s9981" xml:space="preserve">Eſto linea a b. </s>
              <s xml:id="echoid-s9982" xml:space="preserve">craßitudo imi ſcapi columnæ: </s>
              <s xml:id="echoid-s9983" xml:space="preserve">partiatur hæc in partes decem, & </s>
              <s xml:id="echoid-s9984" xml:space="preserve">octo ſuis punst is
                <lb/>
              distinctis, his addatur alia pars, quæ ſit una ex illis decem & </s>
              <s xml:id="echoid-s9985" xml:space="preserve">octo partibus; </s>
              <s xml:id="echoid-s9986" xml:space="preserve">ita erunt nouem, & </s>
              <s xml:id="echoid-s9987" xml:space="preserve">decem p ar-
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              tes, atque hæc erit longitudo, & </s>
              <s xml:id="echoid-s9988" xml:space="preserve">latitudo abaci, ſcilicet a puncto a, ad punctum c. </s>
              <s xml:id="echoid-s9989" xml:space="preserve">partiatur hæc longit udo
                <lb/>
              in duas æquales partes, in e. </s>
              <s xml:id="echoid-s9990" xml:space="preserve">una ex his erit craſſitudo ſeu altitudo capituli cum uolutis. </s>
              <s xml:id="echoid-s9991" xml:space="preserve">demittantur igitur
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              lineæ ab extremitatibus abaciad c d. </s>
              <s xml:id="echoid-s9992" xml:space="preserve">diuidatur postea totum ſpatium a c. </s>
              <s xml:id="echoid-s9993" xml:space="preserve">quod eſt longitudo abaci in
                <lb/>
              partes uiginti, uirgulis ſingulæ ſint notatæ, ut a prioribus illis decem & </s>
              <s xml:id="echoid-s9994" xml:space="preserve">octo internoſcantur. </s>
              <s xml:id="echoid-s9995" xml:space="preserve">recedamus ab
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              extremo abaco id eſt a puncto a. </s>
              <s xml:id="echoid-s9996" xml:space="preserve">uerſus c. </s>
              <s xml:id="echoid-s9997" xml:space="preserve">uel a puncto c. </s>
              <s xml:id="echoid-s9998" xml:space="preserve">verſus a. </s>
              <s xml:id="echoid-s9999" xml:space="preserve">duas partes, & </s>
              <s xml:id="echoid-s10000" xml:space="preserve">dimidiam ex illis
                <lb/>
              uiginti, ut o p q. </s>
              <s xml:id="echoid-s10001" xml:space="preserve">& </s>
              <s xml:id="echoid-s10002" xml:space="preserve">illud ſpatium in duas partes æquas ſecetur in r. </s>
              <s xml:id="echoid-s10003" xml:space="preserve">ita erit utrunque ſpatium partis unius,
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              & </s>
              <s xml:id="echoid-s10004" xml:space="preserve">quartæ. </s>
              <s xml:id="echoid-s10005" xml:space="preserve">recedatur ergo ab extremo abaco ab a uel à c. </s>
              <s xml:id="echoid-s10006" xml:space="preserve">in partem interiorem parte una, & </s>
              <s xml:id="echoid-s10007" xml:space="preserve">quarta
                <lb/>
                <note position="left" xlink:label="note-514.01.147-01" xlink:href="note-514.01.147-01a" xml:space="preserve">10</note>
              in i. </s>
              <s xml:id="echoid-s10008" xml:space="preserve">& </s>
              <s xml:id="echoid-s10009" xml:space="preserve">ab ijs ſignis demittantur catheti, hoc eſt perpendiculares lineæ, quæ ſint r g. </s>
              <s xml:id="echoid-s10010" xml:space="preserve">in his frontes uolu-
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              tarum deſcribendæ ſunt, & </s>
              <s xml:id="echoid-s10011" xml:space="preserve">in ipſis centrum oculi collocandum, quod cyclum Albertus uocat. </s>
              <s xml:id="echoid-s10012" xml:space="preserve">hæ lineæ tam
                <lb/>
              longæ ducantur, quàm priores illæ a punctis a. </s>
              <s xml:id="echoid-s10013" xml:space="preserve">& </s>
              <s xml:id="echoid-s10014" xml:space="preserve">c. </s>
              <s xml:id="echoid-s10015" xml:space="preserve">ad d. </s>
              <s xml:id="echoid-s10016" xml:space="preserve">productæ fuerint. </s>
              <s xml:id="echoid-s10017" xml:space="preserve">partianturq́; </s>
              <s xml:id="echoid-s10018" xml:space="preserve">in partes no-
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              uem, & </s>
              <s xml:id="echoid-s10019" xml:space="preserve">dimidiam, incipiendo a punctis g. </s>
              <s xml:id="echoid-s10020" xml:space="preserve">verſus r. </s>
              <s xml:id="echoid-s10021" xml:space="preserve">hæ partes ſingulæ prioribus illis decem & </s>
              <s xml:id="echoid-s10022" xml:space="preserve">octo, in quas
                <lb/>
              abaci longitudo diuiſa erat, reſpondebunt. </s>
              <s xml:id="echoid-s10023" xml:space="preserve">ex his una & </s>
              <s xml:id="echoid-s10024" xml:space="preserve">dimidia dabitur abaci craſſitudini, ita abacus erit al-
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              ta parte una, & </s>
              <s xml:id="echoid-s10025" xml:space="preserve">dimidia; </s>
              <s xml:id="echoid-s10026" xml:space="preserve">ſed abacus conſtat quadra, & </s>
              <s xml:id="echoid-s10027" xml:space="preserve">cymatio. </s>
              <s xml:id="echoid-s10028" xml:space="preserve">quadra eſt tertia pars altitudinis abaci. </s>
              <s xml:id="echoid-s10029" xml:space="preserve">reli-
                <lb/>
              quas duas cymatium occupat: </s>
              <s xml:id="echoid-s10030" xml:space="preserve">ducendum uero cymatium molliter ad figuram litteræ S. </s>
              <s xml:id="echoid-s10031" xml:space="preserve">constat enim ex
                <lb/>
              duobus c. </s>
              <s xml:id="echoid-s10032" xml:space="preserve">ita ut ſuperiori inferior opponatur, ſuperiori recte, ut ſcribitur formato, infra abacum octo partes
                <lb/>
              erunt. </s>
              <s xml:id="echoid-s10033" xml:space="preserve">qua parte igitur finis est quartæ & </s>
              <s xml:id="echoid-s10034" xml:space="preserve">dimidiæ, ibi in cathetis centra oculi figenda ſunt. </s>
              <s xml:id="echoid-s10035" xml:space="preserve">eſto ibi littera o.
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              </s>
              <s xml:id="echoid-s10036" xml:space="preserve">
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              cum terminus abaci ſit a b. </s>
              <s xml:id="echoid-s10037" xml:space="preserve">uel c b. </s>
              <s xml:id="echoid-s10038" xml:space="preserve">poſito igitur centro in puncto o. </s>
              <s xml:id="echoid-s10039" xml:space="preserve">ducatur circinatio tam magna quan-
                <lb/>
                <note position="left" xlink:label="note-514.01.147-02" xlink:href="note-514.01.147-02a" xml:space="preserve">20</note>
              ta est una ex octo partibus his punctis concluſa l m. </s>
              <s xml:id="echoid-s10040" xml:space="preserve">Cyclus ille uolutæ oculus nominatur. </s>
              <s xml:id="echoid-s10041" xml:space="preserve">et ita factum erit,
                <lb/>
              quod hactenus a Vitr. </s>
              <s xml:id="echoid-s10042" xml:space="preserve">præceptum habemus. </s>
              <s xml:id="echoid-s10043" xml:space="preserve">quod uero dicit.</s>
              <s xml:id="echoid-s10044" xml:space="preserve"/>
            </p>
            <p>
              <s xml:id="echoid-s10045" xml:space="preserve">
                <emph style="sc">Tvnc</emph>
              ab linea, quæ ſecundum abaci extremam partem demiſſa erit, in interiorem partem alia re-
                <lb/>
              cedat unius, & </s>
              <s xml:id="echoid-s10046" xml:space="preserve">dimidiatæ partis latitudine.</s>
              <s xml:id="echoid-s10047" xml:space="preserve"/>
            </p>
            <p style="it">
              <s xml:id="echoid-s10048" xml:space="preserve">Ita intelligendum eſt, ut uelit nobis terminos centrorum in oculo constituere, ut uolutam restè ducamus,
                <lb/>
              quod a paucis animaduerſum eſt, putantes Vitr. </s>
              <s xml:id="echoid-s10049" xml:space="preserve">nullum omnino eorum centrorum lumen dediſſe, ſed in fine li-
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                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="51"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="52"/>
              bri deſcriptam formam ſimpliciter poſuiſſe. </s>
              <s xml:id="echoid-s10050" xml:space="preserve">Recedatur igitur ab extremitatibus abaci in partem interiorem
                <lb/>
              unius, & </s>
              <s xml:id="echoid-s10051" xml:space="preserve">dimidiatæ partis ex uiginti latitudine, uerbi gratia ad ſignum s. </s>
              <s xml:id="echoid-s10052" xml:space="preserve">& </s>
              <s xml:id="echoid-s10053" xml:space="preserve">ab eo ſigno catheti, & </s>
              <s xml:id="echoid-s10054" xml:space="preserve">perpen-
                <lb/>
              diculares lineæ deducantur, & </s>
              <s xml:id="echoid-s10055" xml:space="preserve">ita diuidantur, ut dictum eſt. </s>
              <s xml:id="echoid-s10056" xml:space="preserve">dicit enim.</s>
              <s xml:id="echoid-s10057" xml:space="preserve"/>
            </p>
            <p>
              <s xml:id="echoid-s10058" xml:space="preserve">
                <emph style="sc">Deinde</emph>
              eæ lineæ diuidantur ita, ut quatuor partes, & </s>
              <s xml:id="echoid-s10059" xml:space="preserve">dimidia ſub abaco relinquantur. </s>
              <s xml:id="echoid-s10060" xml:space="preserve">Tunc in
                <lb/>
                <note position="left" xlink:label="note-514.01.147-03" xlink:href="note-514.01.147-03a" xml:space="preserve">30</note>
              eo loco, quilocus diuidit quatuor & </s>
              <s xml:id="echoid-s10061" xml:space="preserve">dimidiam, & </s>
              <s xml:id="echoid-s10062" xml:space="preserve">tres & </s>
              <s xml:id="echoid-s10063" xml:space="preserve">dimidiam partem, centrum oculi ſignetur,
                <lb/>
              ducaturq́; </s>
              <s xml:id="echoid-s10064" xml:space="preserve">ex eo centro rotunda circinatio, tam magna in dia metro, quàm una pars ex octo partibus
                <lb/>
              eſt, ea erit oculi magnitudine. </s>
              <s xml:id="echoid-s10065" xml:space="preserve">Hæc declarata ſunt. </s>
              <s xml:id="echoid-s10066" xml:space="preserve">deinde dicit.</s>
              <s xml:id="echoid-s10067" xml:space="preserve"/>
            </p>
            <p style="it">
              <s xml:id="echoid-s10068" xml:space="preserve">
                <emph style="sc">Et</emph>
              in ea catheto diametros reſpondens agatur. </s>
              <s xml:id="echoid-s10069" xml:space="preserve">Ducenda eſt diametro per medium' oculum, quæ re-
                <lb/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="40"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="41"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="42"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="43"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="44"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="45"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="46"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="47"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="48"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="49"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="50"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="51"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="52"/>
              ſpondeat catheto r g. </s>
              <s xml:id="echoid-s10070" xml:space="preserve">ita ut r g. </s>
              <s xml:id="echoid-s10071" xml:space="preserve">perpendicularis, & </s>
              <s xml:id="echoid-s10072" xml:space="preserve">ad rectos angulos ſit diametro n u.</s>
              <s xml:id="echoid-s10073" xml:space="preserve"/>
            </p>
            <p>
              <s xml:id="echoid-s10074" xml:space="preserve">
                <emph style="sc">Tvnc</emph>
              ab ſummo ſub abaco inceptum in ſingulis tetrantorum pactionibus dimidiatum. </s>
              <s xml:id="echoid-s10075" xml:space="preserve">oculi ſpa-
                <lb/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="40"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="41"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="42"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="43"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="44"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="45"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="46"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="47"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="48"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="49"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="50"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="51"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="52"/>
              tium minuatur, donec in eundem tetrantem, qui eſt ſub abaco ueniat.</s>
              <s xml:id="echoid-s10076" xml:space="preserve"/>
            </p>
            <p style="it">
              <s xml:id="echoid-s10077" xml:space="preserve">Hic difficultas. </s>
              <s xml:id="echoid-s10078" xml:space="preserve">Prima igitur conditio uolutæ est, ut diuiſo oculo in partes quatuor, quas tetrantes uocat
                <lb/>
              ( quod fit catheti, & </s>
              <s xml:id="echoid-s10079" xml:space="preserve">diametri dictæ interſectione ) ducatur ita, ut dimidiatum oculi ſpatium minuatur in ſin-
                <lb/>
              gulis flexibus ſingulorum tetrantum. </s>
              <s xml:id="echoid-s10080" xml:space="preserve">Sed boc fierinon poteſt niſi contra ſingularum actionum inueniantur.
                <lb/>
              </s>
              <s xml:id="echoid-s10081" xml:space="preserve">
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="40"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="41"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="42"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="43"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="44"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="45"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="46"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="47"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="48"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="49"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="50"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="51"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="52"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="40"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="41"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="42"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="43"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="44"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="45"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="46"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="47"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="48"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="49"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="50"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="51"/>
                <handwritten xlink:label="hd-514.01.147-1" xlink:href="hd-514.01.147-1a" number="52"/>
                <note position="left" xlink:label="note-514.01.147-04" xlink:href="note-514.01.147-04a" xml:space="preserve">40</note>
              Vitr. </s>
              <s xml:id="echoid-s10082" xml:space="preserve">certe centrorum terminos innuit, quando dixit, {Tunc ab ea linea, quæ ſecundum abaci extremam par-
                <lb/>
              tem demiſſa erit in interiorem partem, aliarecedat unius, & </s>
              <s xml:id="echoid-s10083" xml:space="preserve">dimidiatæpartis latitudinem.</s>
              <s xml:id="echoid-s10084" xml:space="preserve">} Sumaturigitur
                <lb/>
              ſpatium o ſ. </s>
              <s xml:id="echoid-s10085" xml:space="preserve">& </s>
              <s xml:id="echoid-s10086" xml:space="preserve">transferatur ab a. </s>
              <s xml:id="echoid-s10087" xml:space="preserve">uerſus c. </s>
              <s xml:id="echoid-s10088" xml:space="preserve">& </s>
              <s xml:id="echoid-s10089" xml:space="preserve">ab c. </s>
              <s xml:id="echoid-s10090" xml:space="preserve">uerſus a. </s>
              <s xml:id="echoid-s10091" xml:space="preserve">& </s>
              <s xml:id="echoid-s10092" xml:space="preserve">demittantur catheti ſ x. </s>
              <s xml:id="echoid-s10093" xml:space="preserve">hæ diame-
                <lb/>
              trum n u. </s>
              <s xml:id="echoid-s10094" xml:space="preserve">ſecabunt in y. </s>
              <s xml:id="echoid-s10095" xml:space="preserve">Spatium igitur quod est ab o. </s>
              <s xml:id="echoid-s10096" xml:space="preserve">cẽtro oculi ad y. </s>
              <s xml:id="echoid-s10097" xml:space="preserve">transferatur in diametro ad aliam par
                <lb/>
              tem à y. </s>
              <s xml:id="echoid-s10098" xml:space="preserve">ad r. </s>
              <s xml:id="echoid-s10099" xml:space="preserve">tantum erit latus quadrati quod circa o. </s>
              <s xml:id="echoid-s10100" xml:space="preserve">centrum faciendum est. </s>
              <s xml:id="echoid-s10101" xml:space="preserve">fiat ergo quadratum 1. </s>
              <s xml:id="echoid-s10102" xml:space="preserve">2. </s>
              <s xml:id="echoid-s10103" xml:space="preserve">3. </s>
              <s xml:id="echoid-s10104" xml:space="preserve">4.
                <lb/>
              </s>
              <s xml:id="echoid-s10105" xml:space="preserve">& </s>
              <s xml:id="echoid-s10106" xml:space="preserve">ducantur diagoniæ 1. </s>
              <s xml:id="echoid-s10107" xml:space="preserve">3. </s>
              <s xml:id="echoid-s10108" xml:space="preserve">& </s>
              <s xml:id="echoid-s10109" xml:space="preserve">2. </s>
              <s xml:id="echoid-s10110" xml:space="preserve">4. </s>
              <s xml:id="echoid-s10111" xml:space="preserve">quæ in ſex partes ſingulæ diuidantur, in quibus erunt centra uolutarum col
                <lb/>
              locanda, ta ut incipiamus a ſigno 1. </s>
              <s xml:id="echoid-s10112" xml:space="preserve">& </s>
              <s xml:id="echoid-s10113" xml:space="preserve">dilatemus circinum uſque ad abacum, & </s>
              <s xml:id="echoid-s10114" xml:space="preserve">ducamus tetrantem circuli
                <lb/>
              in exteriorem partem ab abaco ad diametrum n u. </s>
              <s xml:id="echoid-s10115" xml:space="preserve">postea mutato centro in 2. </s>
              <s xml:id="echoid-s10116" xml:space="preserve">ducamus alium tetrantem a dia
                <lb/>
              metro n u. </s>
              <s xml:id="echoid-s10117" xml:space="preserve">ad cathetum r g. </s>
              <s xml:id="echoid-s10118" xml:space="preserve">in inferiorem partem. </s>
              <s xml:id="echoid-s10119" xml:space="preserve">inde mutato centro in ſigno 3. </s>
              <s xml:id="echoid-s10120" xml:space="preserve">ducamus alium tetrantem
                <lb/>
              a catheto r g. </s>
              <s xml:id="echoid-s10121" xml:space="preserve">ad diametrum n u. </s>
              <s xml:id="echoid-s10122" xml:space="preserve">ac demum a diametro n u. </s>
              <s xml:id="echoid-s10123" xml:space="preserve">facto centro in ſigno 4. </s>
              <s xml:id="echoid-s10124" xml:space="preserve">ducamus alium tetrantem
                <lb/>
                <note position="left" xlink:label="note-514.01.147-05" xlink:href="note-514.01.147-05a" xml:space="preserve">50</note>
              ad cathetum r g. </s>
              <s xml:id="echoid-s10125" xml:space="preserve">ſub abaco. </s>
              <s xml:id="echoid-s10126" xml:space="preserve">atque ita erit prima uolutæ circinatio abſoluta. </s>
              <s xml:id="echoid-s10127" xml:space="preserve">& </s>
              <s xml:id="echoid-s10128" xml:space="preserve">in ſingulis tetrantum ductio-
                <lb/>
              nibus diminutum erit dimidiatum oculi ſpatium. </s>
              <s xml:id="echoid-s10129" xml:space="preserve">ita fiet ſecunda circinatio poſito circino in primo puncto diago
                <lb/>
              niæ in ſigno proximo ſigni. </s>
              <s xml:id="echoid-s10130" xml:space="preserve">1. </s>
              <s xml:id="echoid-s10131" xml:space="preserve">& </s>
              <s xml:id="echoid-s10132" xml:space="preserve">postea in alijs eodem ordine quo facta est primum circinatio. </s>
              <s xml:id="echoid-s10133" xml:space="preserve">non abſimili mo
                <lb/>
              do fiet tertia circinatio. </s>
              <s xml:id="echoid-s10134" xml:space="preserve">Sed boc erit diſcriminis omnium circinationum, quod quemadmodum prima in ſin-
                <lb/>
              gulis tetrantum ductionibus diminuebat dimidiatum oculi ſpatium, ita in tertia diminuitur ſexta, & </s>
              <s xml:id="echoid-s10135" xml:space="preserve">in ſecun-
                <lb/>
              da tertia pars oculi. </s>
              <s xml:id="echoid-s10136" xml:space="preserve">Latitudo uolutæ eadem ratione abſoluitur contractione circini, dimidiato oculo a prima
                <lb/>
              circinatione eiſdem centris, eodem ordine conſtitutis. </s>
              <s xml:id="echoid-s10137" xml:space="preserve">ita ut par latitudo uſque in finem ſit ab utraque circinæ
                <lb/>
              tione, in fine autem contrahitur paulum, ita enim res poſtulat.</s>
              <s xml:id="echoid-s10138" xml:space="preserve"/>
            </p>
            <p>
              <s xml:id="echoid-s10139" xml:space="preserve">
                <emph style="sc">Capitvli</emph>
              autem craſsitudo ſic eſt facienda, ut ex nouem partibus, & </s>
              <s xml:id="echoid-s10140" xml:space="preserve">dimidia tres partes præ-
                <lb/>
              pendeant infra aſtragalum ſummi ſcapi. </s>
              <s xml:id="echoid-s10141" xml:space="preserve">Cymatio adempto abaco, & </s>
              <s xml:id="echoid-s10142" xml:space="preserve">canali reliqua ſit pars.</s>
              <s xml:id="echoid-s10143" xml:space="preserve"/>
            </p>
            <note position="left" xml:space="preserve">60</note>
          </div>
        </div>
      </text>
    </echo>
Impressum