Vitruvius, M. Vitruvii ... de architectura libri decem, ad Augustum Caesarem accuratiß conscripti: & nunc primum in Germania qua potuit diligentia excusi, atq[ue] hinc inde schematibus non iniucundis exornati

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            <s xml:id="echoid-s4944" xml:space="preserve">
              <pb o="237" file="0291" n="291" rhead="DE ARCHITEC. LIB. X."/>
            uticongruẽtes, ita principia pariunt ad duos perfectus: </s>
            <s xml:id="echoid-s4945" xml:space="preserve">unũ porrecti, quẽ
              <lb/>
            Græci ὑθ\’ν,αυ uocitant: </s>
            <s xml:id="echoid-s4946" xml:space="preserve">alterum rotundit atis, quem κνκλωτὴυ appel-
              <lb/>
            lant: </s>
            <s xml:id="echoid-s4947" xml:space="preserve">ſed uere ne ſine rotundatione motus porrecti, nec ſine porrecto
              <lb/>
            rotationis, uerſationes onerum poſſunt facere leuationes. </s>
            <s xml:id="echoid-s4948" xml:space="preserve">Id autem ut in-
              <lb/>
            telligatur exponam. </s>
            <s xml:id="echoid-s4949" xml:space="preserve">Inducuntur uti centra axiculi in orbiculos, & </s>
            <s xml:id="echoid-s4950" xml:space="preserve">in tro
              <lb/>
            chleis collocantur, per quos orbiculos funis circumactus directis ductio-
              <lb/>
            nibus, & </s>
            <s xml:id="echoid-s4951" xml:space="preserve">in ſucula collocatus, uectium uer ſationibus onerum facit egreſ-
              <lb/>
            ſus in altum: </s>
            <s xml:id="echoid-s4952" xml:space="preserve">cuius ſuculæ cardines, uti centra, porrecti in chelonijs, fora-
              <lb/>
            minibus{qúe} eius uectes concluſi, capitibus ad circinum circumactis torni
              <lb/>
            ratione uerſando faciũt onerum elationes. </s>
            <s xml:id="echoid-s4953" xml:space="preserve">Quemadmodum etiam ferre-
              <lb/>
            us uectis, cum est admotus ad onus, quod manuum multitudo non potest
              <lb/>
            mouere, ſuppoſita uti centro cito porrecta preßione, quod Græci ὑϖο-
              <lb/>
            μόχλιου appellant, & </s>
            <s xml:id="echoid-s4954" xml:space="preserve">uectis lingua ſub onus ſubdita, caput eius unius
              <lb/>
            hominis uiribus preſſum, id onus extollit. </s>
            <s xml:id="echoid-s4955" xml:space="preserve">Id autem fit, quòd breuior pars
              <lb/>
            prior uectis, ab ea preßione, quod est centrum, ſubit ſub onus: </s>
            <s xml:id="echoid-s4956" xml:space="preserve">& </s>
            <s xml:id="echoid-s4957" xml:space="preserve">quod
              <lb/>
            longius ab eo centro diſtans caput eius, per id cum ducitur, faciundo mo-
              <lb/>
            tus circinationis, cogit preßionibus examinare paucis manibus oneris ma
              <lb/>
            ximi pondus. </s>
            <s xml:id="echoid-s4958" xml:space="preserve">Item ſi ſub onus uectis ferrei lingula ſubiecta fuerit, ne ca
              <lb/>
            put eius preßione imum, ſed aduer ſus in altitudinem extolletur, lingula
              <lb/>
            fulcta in areæ ſolo habebit eam pro onere: </s>
            <s xml:id="echoid-s4959" xml:space="preserve">oneris autem ipſius angulum
              <lb/>
            pro preßione, ita non tam faciliter, quàm per preßionem, ſed aduerſus ni
              <lb/>
            hilominus in pondus oneris erit excitatum. </s>
            <s xml:id="echoid-s4960" xml:space="preserve">Igitur ſi plus lingula uectis ſu
              <lb/>
            pra hypomochlion poſita ſub onus ſubierit, et caput eius propius centrũ
              <lb/>
            preßiones habuerit, nõ poterit onus eleuare, niſi (quemadmodum ſupra
              <lb/>
            ſcriptum est) examinatio uectis longius per caput ne iuxta onus fue-
              <lb/>
            rit facta. </s>
            <s xml:id="echoid-s4961" xml:space="preserve">Id autem ex trutinis, quæ ſtateræ dicuntur licet, conſiderare.
              <lb/>
            </s>
            <s xml:id="echoid-s4962" xml:space="preserve">Cum enim anſa propius caput, unde lancula pendet, ubiut centrum est
              <lb/>
            collocata, & </s>
            <s xml:id="echoid-s4963" xml:space="preserve">æquipondium in alter am partem ſcapi per punctauagan-
              <lb/>
            do, quo longius, aut etiam ad extremum perducitur paulo, etiam pari pon
              <lb/>
            dere amplißimam penſionẽ parem perficit, per ſcapi librationem et exa-
              <lb/>
            minationem longius à centro recedentem. </s>
            <s xml:id="echoid-s4964" xml:space="preserve">Ita imbecillior æquipondij bre
              <lb/>
            uitas, maiorem uim ponder is momento deducens, ſine uehementia molli-
              <lb/>
            ter ab imo ſurſum uerſum egredi cogit. </s>
            <s xml:id="echoid-s4965" xml:space="preserve">Quemadmodũ etiam nauis one-
              <lb/>
            rariæ maximæ gubernator anſam gubernaculi tenens, quòd οἶαξ à </s>
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