Heron Alexandrinus, Di Herone Alessandrino De gli automati : ouero machine semoventi, libri due, 1589

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            <s xml:id="echoid-s202" xml:space="preserve">
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            opportune. </s>
            <s xml:id="echoid-s203" xml:space="preserve">Hora egliſi potrebbe dubitare per qual cagio
              <lb/>
            ne à queſte Machine ſi dia titolo di ſe mouenti, più che
              <lb/>
            al carro, che vien’tirato da caualli, & </s>
            <s xml:id="echoid-s204" xml:space="preserve">al molino che vien
              <lb/>
            moſſo da l’acqua, auenga, che coſiſia, nelle ſe mouenti il
              <lb/>
            contrapeſo, come ne carri il cauallo, & </s>
            <s xml:id="echoid-s205" xml:space="preserve">ne molini l’acqua,
              <lb/>
            eſſendo che non meno il cauallo, e l’acqua ſi muouano
              <lb/>
            per ſe ſteſsi di quello, che ſi facciano il miglio, e la rena ca
              <lb/>
            denti dalforo de’ cannoni & </s>
            <s xml:id="echoid-s206" xml:space="preserve">il contrapeſo medeſimo ver-
              <lb/>
            ſo il centro. </s>
            <s xml:id="echoid-s207" xml:space="preserve">A queſta dubitatione può riſponderſi dop-
              <lb/>
            piamente, perciò che il cauallo non è parte del carro, ſe
              <lb/>
            non largamente preſa, ne l’acqua del molino, come il con
              <lb/>
            trapeſo è parte della Machina. </s>
            <s xml:id="echoid-s208" xml:space="preserve">Ondenaſce, che eſſendo il
              <lb/>
            cauallo, e l’acqua principij eſterni, non ſi poſſa dire che
              <lb/>
            quelle machineſi muouano da ſe ſteſte, mapiù toſto ſiano
              <lb/>
            moſſe da coſa, che è fuori diloro, auéga che chi dice coſa,
              <lb/>
            che ſi muoue, ponga il principio del moto nella coſa, che
              <lb/>
            ſi muoue, oue chi dice coſa moſſa, ponga il motore, cioè il
              <lb/>
            principio del moto fuori della coſa moſſa. </s>
            <s xml:id="echoid-s209" xml:space="preserve">L’altra ragio-
              <lb/>
            ne, e forſi migliore, è che nel carro, e nel Molino, i motori
              <lb/>
            ſono manifeſti, cioè il cauallo, el acqua, onde ve duti da
              <lb/>
            tuttinon può cadere altrui nel animo che quelle machine
              <lb/>
            perſe ſteſſe ſi muouano; </s>
            <s xml:id="echoid-s210" xml:space="preserve">Ilche non auiene in queſteſe mo-
              <lb/>
            uenti, nellequali il principio del moto che è il contrapeſo,
              <lb/>
            ſe ne ſtà naſcoſto, e non veduto da niuno, e che queſta ſe-
              <lb/>
            conda ragione ſia buona, s´argomenta dall hauer voluto
              <lb/>
            Herone auertirci, che le machine ſi facciano tanto piccio-
              <lb/>
            le, che non poſſa cadere nel animo de gli ſpettatori, che
              <lb/>
            dentro vi poſſa eſſere perſona che le muoua, quaſi che
              <lb/>
            egli voleſſe dire, che caduto chefoſſe nell’animo di chi ve
              <unsure/>
              <lb/>
            de, che dentro vi haueſſe poſſuto capire vn huomo che le
              <lb/>
            moueſſe, conoſciuto il motore ceſſaſſe la marauiglia, & </s>
            <s xml:id="echoid-s211" xml:space="preserve">la
              <lb/>
            ragione del chiamarle ſemouenti. </s>
            <s xml:id="echoid-s212" xml:space="preserve">Nondimeno </s>
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