Alberti, Leone Battista, De re aedificatoria, 1485
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              dia. </s>
              <s id="N40B866">Hanc tibi craſſitudinem capituli diuidito in modulos
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              unum de uiginti. </s>
              <s id="N40B86B">Operculo igitur dabis modulos tris. </s>
              <s id="N40B86E">Cor
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              tici dabis quattuor. </s>
              <s id="N40B873">lanci dabis ſex. </s>
              <s id="N40B876">Infimas autem reliquas
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              ſex relinquito uolutis: quas hinc atque hinc faciat dependens
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              cortex. </s>
              <s id="N40B87D">Operculi latitudo quaque uerſus habebit diametrum
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              ſummi ſcapi ſuæ columnæ. </s>
              <s id="N40B882">Latitudo corticis quæ eſt a fron
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              te capituli ad occiput æquabitur operculo. </s>
              <s id="N40B887">Longitudo ipſi
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              us corticis profluet lateribus / atque
                <expan abbr="perpẽdebit">perpendebit</expan>
              ſeſe
                <expan abbr="inuoluẽs">inuoluens</expan>
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              ad cocleam lineam. </s>
              <s id="N40B896">Vmbilicus cocleæ qui in dextro eſt di
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              ſtabit a ſiniſtro compari umbilico modulos duoſ atque uigin
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              ti. </s>
              <s id="N40B89D">Et diſtabit ab ultima ſupremi operculi linea modulos duo
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              decim. </s>
              <s id="N40B8A2">Cocleam ipſam ſic ducito. </s>
              <s id="N40B8A5">In punctum quidem me
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              dii umbilici deſcribito punctum puſillum: cuius ſemidia /
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              meter modulum capiat unum. </s>
              <s id="N40B8AC">Et contra notato itidem alte
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              rum ſubtus/ in ambitu excelſo notato punctum unum: Et
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              contra notato itidem alterum ſubtus in ambitu depreſſiore:
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              tunc in ſuperiore iſtiuſmodi puncto ponito
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              circini ſta
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              bilem: pedem autem mobilem ducito a linea quæ
                <expan abbr="operculã">operculam</expan>
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              diuidat a cortice: et deſcendito urgendo in partem capitu
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              li extrinſecam / uſque compleat integrum ſemicirculum: atque
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              reſpondeat e regione ſub cicli puſilli puncto. </s>
              <s id="N40B8C5">illic reſtringi
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              to circinum: et ponito pedem
                <expan abbr="ſtabilẽ">ſtabilem</expan>
              ſubtus in puncto iſtic
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              infimo puſilli cicli. </s>
              <s id="N40B8D0">Mobilem uero pedem ducito ab
                <expan abbr="īcoha">incoha
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                to</expan>
              uortice hactenus deſcripto: et aſcendito introrſus uſque
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                <expan abbr="ſũmum">ſummum</expan>
              lancis labrum attingas. </s>
              <s id="N40B8DE">Sic enim duobus ſemicircu
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              lis imparibus uorticem unum integrum effeceris. </s>
              <s id="N40B8E3">Deinceps
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                <expan abbr="reſũmito">reſumito</expan>
              ductum iſtiuſmodi et cocleam / hoc eſt anfractus
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                <expan abbr="circũductæ">circumductæ</expan>
              lineæ ad oculum hoc eſt ad puſillum uſque
                <expan abbr="ciclũ">ciclum</expan>
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              implicato. </s>
              <s id="N40B8F6">Lancis labrum pandetur / ut frontibus foris pro
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              mineat ex cortice modulos duos: fundo autem ſui æquabit
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              ſupremæ columnæ amplitudinem: contracturæ uolutatum
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              quæ pro lateribus capituli iungunt uolutas anteriores po
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              ſterioribus
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              graciles ad craſſitudinem lancis addita mo
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              duli dimidia. </s>
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                <expan abbr="Ornamentũ">Ornamentum</expan>
              operculo adiungetur: cimatium </s>
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