Agricola, Georg, De re metallica Libri XII, Quibus Officia, Instrumenta, Machinae, ac omnia ..., 1556
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            <p id="N145D0" type="main">
              <s id="N145FF">
                <pb pagenum="177" xlink:href="001/01/187.jpg"/>
              digitos, ſuperiori parte
                <expan abbr="rotũdum">rotundum</expan>
              . </s>
              <s id="N1460F">At bractea habet tria foramina, in utroque
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              latere unum, tertium in poſteriori eius parte: quæ lata ſunt digitum, longa
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              tres digitos: per ea tum cinis ex carbonibus candentibus decidit, tum ſpirat
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              flatus penetrans in cameram, quæ ſub ipſa bractea eſt: itaque is flatus ignem
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              excitat. </s>
              <s id="N1461A">
                <expan abbr="Quã">Quam</expan>
              ob rem hæc fornacula, quam metallici propter uſum ab expe­
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              riendo appellant, apud chymiſtas ex uento nomen inuenit: uerum bracteæ
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              ferreæ pars, quæ è fornacula extat & eminet longa eſſe ſolet dodrantem, la­
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              ta palmum. </s>
              <s id="N14626">In ea carbunculi locati expeditè in fornaculam per ipſius os for
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              cipe imponuntur, rurſusque, ſi res hoc poſtulat, ex fornacula exempti in ea­
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              dem reponuntur.</s>
            </p>
            <p id="N1462D" type="caption">
              <s id="N1462F">B
                <emph type="italics"/>
              racteæ foramina
                <emph.end type="italics"/>
              A. E
                <emph type="italics"/>
              iuſdem pars quæ extat e fornacula
                <emph.end type="italics"/>
              B.</s>
            </p>
            <figure id="id.001.01.187.1.jpg" xlink:href="001/01/187/1.jpg" number="61"/>
            <p id="N14643" type="main">
              <s id="N14645">Ferrea autem fornacula conſtat ex quatuor bacillis ferreis, altis ſeſquipe­
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              dem, inferius parumper diuaricatis & latis ut firmius ſtare poſſint: ex quo­
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              rum duobus prior fornaculæ pars, ex duobus poſterior efficitur: cum iſtis
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              bacillis utriuſque partis conglutinata & conferruminata ſunt bacilla ferrea
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              tranſuerſaria, numero tria: prima ubi ad altitudinem palmi aſſurrexerunt:
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              ſecunda ubi ad altitudinem pedis: tertia in ſumma eorum parte. </s>
              <s id="N14652">Recta
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              quidem bacilla ca parte perforata ſunt, qua cum ipſis conglutinantur
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              tranſuerſaria, ut à lateribus in ea includi poſsint alia bacilla ferrea ſimi­
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              liter utrinque tria numero. </s>
              <s id="N1465B">Itaque duodecim ſunt bacilla tranſuerſaria,
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              quæ tres efficiunt ordines, imparibus interuallis diſtinctos: etenim ab u­
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              no bacillo recto ad alterum in infimo ordine eſt interuallum unius pedis &
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              quinque digitorum. </s>
              <s id="N14664">At in medio inter priora
                <expan abbr="quidẽ">quidem</expan>
              bacilla & poſteriora eſt
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              ſpacium trium palmorum & unius digiti. </s>
              <s id="N1466D">Laterum uerò bacilla inter ſe di­
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              ſtant tribus palmis et
                <expan abbr="totidẽ">totidem</expan>
              digitis: ſed in ſupremo ordine inter priora qui­
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              dem bacilla et poſteriora eſt interuallum duorum palmorum, inter laterum
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              uerò bacilla trium, ut iſto modo fornacula in ſumma parte fiat anguſtior: </s>
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          </chap>
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