Guevara, Giovanni di, In Aristotelis mechanicas commentarii, 1627

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              aut fiſtulam aer emittendus eſſet, ac pellendus à proijcien­
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              te poſt terga proiecti, poſterioremque partem, qua neruo
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              aptari ſolet ſagitta ex directo feriret, tanquam ventus na­
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              uem in puppi:
                <expan abbr="tantaq.">tantaque</expan>
              demum eſſet virtus ipſius aeris in
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              tam paruam quantitatem incidentis, vt totum corpus emi­
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              nus impellere contra quamcunque reliqui aeris vniuerſi ve­
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              hementiam præualeret, quod eſt abſurdum. </s>
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            <p id="N17C97" type="main">
              <s id="N17C99">Accedit quia nec aquam comitari, atque impellere vi­
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              demus nauiculas, ac triremes quemcunque curſum in mari
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              tenentes, quippe quæ ſæpius contra fluxum, ac fluctus illius
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              ſolo remorum pulſu feruntur: Nec aerem circumobſiſten­
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              tem conſtat, rotam figuli, vel ſimilem, quæ in gyrum velo­
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              ciſſimè ducitur promouere, cum accenſum lumen prope
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              illam extinguere, aut inflectere quamuis concitatus ipſe
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              minimè valeat. </s>
              <s id="N17CAA">Præterea ſi ſolus aer ad proiectorum la­
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              tionem valeret, faciliùs, ac longiùs transferre deberet le­
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              uiora proiecta, quàm grauiora; at ſi quis proijciat plumam,
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              vel paleam, minus illam promouere valebit, quam plum­
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              beum quippiam, vel æneum, quod non excedat vires proij­
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              cientis: Ergo non ſolo aere proiecta ipſa feruntur: Neque
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              vim huius argumenti effugiunt nonnulli dum aiunt, ob ni­
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              miam leuitatem minus proijci corpora poſſe, à quocunque
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              proijciantur, aut ferantur, eo quod proportio quædam re­
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              quiratur inter proijciens, & proiectum, ac ſicut nimia reſi­
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              ſtentia, ita imbecillitas nimia ipſius proiecti, motum proie­
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              ctionis impediat, vt ſequenti quæſt. </s>
              <s id="N17CC3">optimè docet Ariſto­
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              teles. </s>
              <s id="N17CC9">Quandoquidem ſi latio proiectorum perficeretur
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              ab aere nulla eſſet imbecillitas leuium ad talem motum,
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              quæ ſanè tota conſiſtit in eo, quod ſuperare, & expellere
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              nequeant aerem, in cuius locum vlterius tendendo deberent
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              ſuccedere, vt ipſemet Ariſtoteles ibidem aduertit. </s>
              <s id="N17CD4">Si enim
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              aer deferret proiecta, non vtique illis obſtaret, ac ſine ob­
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              ſtaculo nulla haberetur ratio imbecillitatis eorum. </s>
              <s id="N17CDB">Quare
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              non modò leuia nimis, æquè ac moderatè grauia proijci
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              poſſent, ſed multò longiùs, ac faciliùs propter minorem </s>
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