DelMonte, Guidubaldo, Mechanicorvm Liber
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              cùm cochlea congruant (eodem enim modo deſcribentur helices
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              in ſuperficie concauia cylindri, ſicuti fit in conuexa) ſi deinde co­
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              chlea in ſuis polis firmetur, ſcilicet in ſuo axe, circumuertaturq;;
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              patet D ad motum circumuerſionis cochleæ quemmadmodum ty
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              lum moueri. </s>
              <s id="id.2.1.237.22.1.2.0">nec non ſi D in EF firmetur, ita vt immobilis ma
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              neat, dum circumuertitur cochlea; ſuper helices cylindri D, ad
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              motum ſuæ circumuerſionis dextrorſum, vel ſiniſtrorſum factæ;
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              tùm in anteriorem, tùm in poſteriorem partem mouebitur. </s>
              <s id="id.2.1.237.22.1.3.0">cylin­
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              drus autem D hoc modo
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              vulgò mater, ſiue cochleæ
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              fæmina nuncupatur.
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              <s id="id.2.1.237.23.1.1.0">Si autem cochleæ (vt in quinta figura) tympanum C dentibus
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              obliquis dentatum apponatur, vt docet Pappus in eodem octauo li­
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              bro; vel etiam rectis; ita tamen conſtructis, vt facilè cum cochlea
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              conueniant: ſimiliter manifeſtum eſt ad motum cochleæ circumuer
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              ti etiam tympanum C. </s>
              <s id="id.2.1.237.23.1.1.0.a">eodemq; modo tympani dentes ſuper he
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              lices cochleæ moueri. </s>
              <s id="id.2.1.237.23.1.2.0">& hæc dicitur cochlea infinita, quia & co
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              chlea, & tympanum dum circumuertuntur, ſemper eodem modo
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              ſe ſe habent. </s>
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