Heron Alexandrinus, Spiritali di Herone Alessandrino

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            <p type="head">
              <s>
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              </s>
            </p>
            <p type="main">
              <s>Dunque per mezzo delle ſampogne ſi viene a
                <lb/>
              generare il canto; ma è ben vero, che s'intuonano
                <lb/>
              diuerſi accenti dalle ſampogne, in quanto che le ſo-
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              no più ſottili, o più groſſe, & anco più lunghe, o
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              più breui; ouero quando qualche parte di eſſe, s'in-
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              merge nell'acqua più alta, o più baſſa; di modo che
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              per queſta via, ſi viene ad imitar' il canto, di molti
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              vccelli; e per far queſto ſi forma (ouero in vna fon-
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              te, ouero in qualche grotta, ouero anco in gene-
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              rale per tutto doue ſi troui acqua corrente (vna
                <lb/>
              moltitudine di vccelli meſsi per ordine, e vicino a
                <lb/>
              loro vna ciuetta ſopra la poſta, che da ſe ſteſſa hor fi
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              riuolge a gli vccelli, & hora li ſi naſconde, e quando
                <lb/>
              ella è naſcoſta gli vccelli cantano, e poi che a loro ſi
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              riuolge, fermano il canto, e queſto fanno molte, e
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              molte volte: hor eccoui il modo come ciò ſi fà.
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              </s>
            </p>
            <p type="main">
              <s>
                <emph type="italics"/>
              Sia vna canella, che di continuo corra A, e le ſi ponghi ſotto vn vaſo
                <lb/>
              ben rinchiuſo BCDE, che habbia il diabete ſpiritale, ouero il ſifone
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              torto FG, & vn infondibolo meſſoui dentro HK la canella del quale ſia
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              tanto lunge dal fondo del vaſo, quanto non impediſca il paſſo all'acqua, &
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              habbi molte ſampognette di più ragioni, ſi come hauemo di già detto, e ſi
                <lb/>
              vede in L.</s>
              <s> Hor fatto queſto, accaderà che mentre il vaſo BCDE ſi em-
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              pie d'acqua, l'aria che vi è dentro diſcacciata per le ſampognette, imite-
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              rà il canto de gli vccelli, peroche ciaſcuna di quelle ſampognette finiſce
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              nella bocca di qualch'vno di quelli vccelli; ma dopo che fia pieno il vaſo,
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              mentre ſi votarà per la canna GF tanto ceſſarà il loro canto.</s>
              <s> Ma perche
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              la ciuetta hor ſi riuolga a gli vccelli, hor li ſi aſconda, come è già inſegna-
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              to prima; facciaſi queſto, che diremo adeſſo.</s>
              <s> Sia ſopra vna qualche baſe
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              M l'
                <emph type="sup"/>
              1
                <emph.end type="sup"/>
              Aſſe diritto, e polito al torno NX, d'intorno al quale ſi accomodi la
                <emph.end type="italics"/>
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              </s>
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        </body>
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