Heron Alexandrinus, Spiritali di Herone Alessandrino

Table of figures

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              <s>Del Thyrſo.</s>
              <s> XLVIII.
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              <s>Fare che vn Thyrſo tuffato nell'acqua, mãdi fuora
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              il ſuono della ſampogna, ouero di qualche vccello.
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              Sia vn
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              1
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              Thyrſo AB
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              CD, che habbia vn foro in
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              cima del
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              2
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              Corymbo D,
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              qual corymbo ſia concauo
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              dentro, & a guiſa d'vna
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              pigna, ouero d'vn cono, &
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              habbia tramezzato la go-
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              la poco di ſotto alla bocca
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              co'l tramezzo AE, nel
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              quale ſi accommodi la ſam_
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              pognetta F, intorniata di
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              ſopra da vn'altra canna
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              groſſa, e forata inſieme col
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              tramezzo.</s>
              <s> Quando noi
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              dunque mettendo il thyrſo
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              nell'acqua lo premeremo
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              in giù, l'aria, che vi è den-
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              tro venẽdo diſcacciata dal_
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              l'acqua, produce il ſuono;
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              e ſe la ſampognetta ſarà
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              ſola, produrrà il ſuono del_
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              la ſampogna: ma ſe ſarà
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              ſopra del tramezzo qual-
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              che quantità d'acqua, ren-
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              derà vn ſuono ſtrepitoſo.</s>
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              <s>
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              ANNOTATIONI DI A.</s>
              <s> G.</s>
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              1
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              Thyrſo è uoce di molti ſignificati, gli antichi chiamorno thyrſo quell'haſta cir-
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              condara di ellera, che portaua Bacco, & uſauano le baccanti nelli ſuoi ſagrificij;
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              appreſſo Celio Rodigino, è una certa corona nuttiale, e da Plinio è poſto per il fu-
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              </s>
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