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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              <pb o="221" file="0245" n="245" rhead="LIBER IX. CAPUT V. (VIII.)"/>
            aeſtivus. </s>
            <s xml:id="echoid-s3882" xml:space="preserve">Contra autem E, litera I erit, ubi ſecat circinationem linea,
              <lb/>
            quae eſt trajecta per centrum: </s>
            <s xml:id="echoid-s3883" xml:space="preserve">et contra G et H, literae erunt K et L,
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            et contra C et F et A, erit litera N. </s>
            <s xml:id="echoid-s3884" xml:space="preserve">Tunc perducendae ſunt diametri
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            ab G ad L, et ab H ad K. </s>
            <s xml:id="echoid-s3885" xml:space="preserve">Quae erit inferior, partis erit aeſtivae, ſu-
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            perior hibernae. </s>
            <s xml:id="echoid-s3886" xml:space="preserve">Quae diametri ſunt aeque mediae dividendae, ubi e-
              <lb/>
            runt literae M et O, ibique centra ſignanda, et per ea ſigna et centrum
              <lb/>
            A linea ad extremas lineas circinationis eſt perducenda, ubi erunt lite-
              <lb/>
            rae P, Q. </s>
            <s xml:id="echoid-s3887" xml:space="preserve">Haec erit linea πρὸς ὀρθὰς radio aequinoctiali. </s>
            <s xml:id="echoid-s3888" xml:space="preserve">Vocabitur au-
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            tem haec linea mathematicis rationibus Axon: </s>
            <s xml:id="echoid-s3889" xml:space="preserve">et ab eisdem centris di-
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            ducto circino ad extremas diametros, deſcribantur hemicyclia duo, quo-
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            rum unum erit aeſtivum, alterum hibernum. </s>
            <s xml:id="echoid-s3890" xml:space="preserve">Deinde in quibus locis ſe-
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            cant lineae parallelae lineam eam, quae dicitur horizon, in dexteriore par-
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            te erit litera S, in ſiniſteriore V; </s>
            <s xml:id="echoid-s3891" xml:space="preserve">et ab extremo hemicyclio, ubi eſt li-
              <lb/>
            tera G, ducatur linea parallelos Axoni ad ſiniſtrum hemicy clium, ubi eſt
              <lb/>
            litera H. </s>
            <s xml:id="echoid-s3892" xml:space="preserve">Haec autem parallelos linea vocitatur lacotomus: </s>
            <s xml:id="echoid-s3893" xml:space="preserve">et tum cir-
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            cini centrum collocandum eſt eo loci, quo ſecat eam lineam aequinocti-
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            alis radius, ubi erit litera X, et deducendum ad eum locum, quo ſecat
              <lb/>
            circinationem aeſtivus radius, ubi eſt litera H, et centro aequinoctiali
              <lb/>
            intervallo aeſtivo circinatio circuli menſtrui agatur, quod manacus dici-
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            tur. </s>
            <s xml:id="echoid-s3894" xml:space="preserve">Ita habebitur analemmatos deformatio. </s>
            <s xml:id="echoid-s3895" xml:space="preserve">Cum hoc ita ſit deſcripum
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            et explicatum ſive per hibernas lineas, ſive per aeſtivas, ſive per aequi-
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            noctiales, aut etiam per menſtruas, in ſubjectionibus rationes horarum
              <lb/>
            erunt ex analemmatis deſcribendae, ſubjicienturque in eo multae varie-
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            tates et genera horologiorum, et deſcribentur rationibus his artiſicioſis.
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            </s>
            <s xml:id="echoid-s3896" xml:space="preserve">Omnium autem ſigurarum deſcriptionumque earum effectus unus, uti
              <lb/>
            dies aequinoctialis, brumalisque, itemque ſolſtitialis in duodecim partes
              <lb/>
            aequaliter ſit diviſus. </s>
            <s xml:id="echoid-s3897" xml:space="preserve">Quas res non pigritia deterritus, praetermiſi, ſed
              <lb/>
            ne multa ſcribendo offendam. </s>
            <s xml:id="echoid-s3898" xml:space="preserve">A quibusque inventa ſunt genera deſcriptio-
              <lb/>
            nesque horologiorum exponam; </s>
            <s xml:id="echoid-s3899" xml:space="preserve">neque nunc nova genera invenire </s>
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