Vitruvius, Marci Vitruvii Pollionis De architectura libri decem : ope codicis Guelferbytani, editionis principis, ceterorumque subsidiorum recensuit, et glossario in quo vocabula artis propria Germ. Ital. Gall. et Angl. explicantur, 1800

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            <s xml:id="echoid-s1040" xml:space="preserve">
              <pb o="23" file="0049" n="49" rhead="LIBER I. CAPUT VI."/>
            non deſideretur: </s>
            <s xml:id="echoid-s1041" xml:space="preserve">ſupraque ejus loci centrum medium, collocetur aeneus
              <lb/>
            gnomon, indagator umbrae, qui Graece σκιαθήρας dicitur. </s>
            <s xml:id="echoid-s1042" xml:space="preserve">Hujus ante-
              <lb/>
            meridianam circiter horam quintam, ſumenda eſt extrema gnomonis um-
              <lb/>
            bra, et puncto ſignanda: </s>
            <s xml:id="echoid-s1043" xml:space="preserve">deinde circino diducto ad punctum, quod eſt gno-
              <lb/>
            monis umbrae longitudinis ſignum, ex eoque a centro circumagenda linea
              <lb/>
            rotundationis. </s>
            <s xml:id="echoid-s1044" xml:space="preserve">Itemque obſervanda poſtmeridiana iſtius gnomonis cres-
              <lb/>
            cens umbra, et cum tetigerit circinationis lineam, et ſecerit parem ante-
              <lb/>
            meridianae umbrae poſtmeridianam, ſignanda puncto. </s>
            <s xml:id="echoid-s1045" xml:space="preserve">Ex his duobus
              <lb/>
            ſignis circino decuſſatim deſcribendum: </s>
            <s xml:id="echoid-s1046" xml:space="preserve">et per decuſſationem, et medium
              <lb/>
            centrum linea perducenda ad extremum, ut habeatur meridiana et ſep-
              <lb/>
            tentrionalis regio. </s>
            <s xml:id="echoid-s1047" xml:space="preserve">Tunc poſtea ſumenda eſt ſextadecima pars circinatio-
              <lb/>
            nis lineae totius rotundationis, centrumque collocandum in meridiana
              <lb/>
            linea, quae tangit circinationem, et ſignandum dextra ac ſiniſtra in circi-
              <lb/>
            natione, et meridiana, et ſeptentrionali parte. </s>
            <s xml:id="echoid-s1048" xml:space="preserve">Tunc ex ſignis his qua-
              <lb/>
            tuor, per centrum medium decuſſatim lineae ab extremis, ad extremas
              <lb/>
            circinationes perducendae. </s>
            <s xml:id="echoid-s1049" xml:space="preserve">Ita auſtri et ſeptentrionis habebitur octavae
              <lb/>
            partis deſignatio. </s>
            <s xml:id="echoid-s1050" xml:space="preserve">Reliquae partes, dextra tres, et ſiniſtra tres his aequa-
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            les, diſtribuendae ſunt in tota rotundatione, ut aequales diviſiones octo
              <lb/>
            ventorum deſignatae ſint in deſcriptione: </s>
            <s xml:id="echoid-s1051" xml:space="preserve">tum per angulos inter duas
              <lb/>
            ventorum regiones, et platearum, et angiportorum, videntur debere di-
              <lb/>
            rigi deſcriptiones. </s>
            <s xml:id="echoid-s1052" xml:space="preserve">His enim rationibus, et ea diviſione, excluſa erit ex
              <lb/>
            habitationibus et vicis, ventorum vis moleſta. </s>
            <s xml:id="echoid-s1053" xml:space="preserve">Cum enim plateae contra
              <lb/>
            directos ventos erunt conſormatae, ex aperto coeli ſpatio impetus ac ſlatus
              <lb/>
            ſrequens, concluſus in ſaucibus angiportorum, vehementioribus viribus
              <lb/>
            pervagabitur. </s>
            <s xml:id="echoid-s1054" xml:space="preserve">Quas ob res convertendae ſunt ab regionibus ventorum,
              <lb/>
            directiones vicorum, uti advenientes ad angulos inſularum, ſrangantur,
              <lb/>
            repulſique diſſipentur. </s>
            <s xml:id="echoid-s1055" xml:space="preserve">Fortaſſe mirabuntur ii, qui multa ventorum no-
              <lb/>
            mina noverunt, quod a nobis expoſitum ſit tantummodo octo eſſe ventos.
              <lb/>
            </s>
            <s xml:id="echoid-s1056" xml:space="preserve">Si autem animadverterint, orbis terrae circuitionem per ſolis curſum </s>
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