Agricola, Georg, De re metallica Libri XII, Quibus Officia, Instrumenta, Machinae, ac omnia ..., 1556

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              odecim: cuius tres parietes ſaxis quadrangulis, quibus ſuperpoſiti ſint late­
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              res, extruantur. </s>
              <s id="N1D58B">Poſterior altus exiſtat pedes tres & palmum: quæ altitudo
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              etiam ſit his, qui ſunt à lateribus. </s>
              <s id="N1D590">Eorum tamen uterque priore parte, qua pa­
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              tet fornax, decliuis, altus ſit
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              pedes duos, & palmos tres: omnes
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              uerò craſſi pedem & palmum: ſuper hos parietes, ne ipſi minus craſſi, nimis
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              graue onus impoſitum ferre non poſſint, ſtatuantur quatuor tigna, lutoque
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              oblinantur. </s>
              <s id="N1D59F">Ea ſuſtineant caminum aſſurgentem, & per tectum
                <expan abbr="penetrantẽ">penetrantem</expan>
              :
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              cuius camini non modo cratibus, ſed etiam tignis lutum craſſum illinatur. </s>
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              Focus autem fornacis quaquauerſus ſit longus pedes ſex, lateribus ſtratus,
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              decliuis. </s>
              <s id="N1D5AE">Panes ærei in hac fornace collocati calefiant hoc modo: in
                <expan abbr="ſornacẽ">fornacem</expan>
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              primo continenter ponantur, tantummodo lapillis oui magnitudine inter­
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              poſitis, ut ignis calor in medium inter eos ſpacium penetrare poſſit: quineti
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              ain qui in infimo catini loco reſederunt, in dimidium laterem eadem de cau
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              ſa impoſiti exaltentur. </s>
              <s id="N1D5BD">Ne uerò ultimi, qui ſunt ad oſtium fornacis, cadant,
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              ad eos laminæ ferreæ, uel panes ærei, cùm æs rurſus perficitur, ex catino pri
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              mum extracti apponantur: atque ad hos panes ærei fathiſcentes, aut ſaxa. </s>
              <s id="N1D5C4">De
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              inde in panes inijciantur carbones: tum prunæ. </s>
              <s id="N1D5C9">Primò autem panes
                <expan abbr="caleſcãt">caleſcant</expan>
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              à leni igni: mox ad eos adijciantur plures carbones: interdum altitudine do
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              drantis. </s>
              <s id="N1D5D4">Acriori certe igni nobis opus eſt ad duros æreos panes calefacien­
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              dos quàm ad fragiles: panibus ſatis calefactis, quod ſpacio horarum ferè du
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              arum fieri ſolet, ex oſtio fornacis remoueantur laminæ ferreæ, et panes ærei
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              fathiſcentes uel ſaxa. </s>
              <s id="N1D5DD">Deinde panes calefacti ordine extrahantur raſtro bi­
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              denti, quali is, qui panes fathiſcentes torrefacit, utitur. </s>
              <s id="N1D5E2">Tum primus pani fa­
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              thiſcenti ſuperponatur: & malleis à duobus operarijs percutiatur donec diſ
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              ſiliat. </s>
              <s id="N1D5E9">Quo uerò quiſque panis magis calet, hoc frangitur citius: quo minus,
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              hoc tardius: nam ærei uaſis inſtar huc & illuc flectitur. </s>
              <s id="N1D5EE">Primò pane fracto ſe
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              cundus in eius
                <expan abbr="fragmẽtis">fragmentis</expan>
              collocetur & percutiatur, uſque dum
                <expan abbr="etiã">etiam</expan>
              ipſe diffiſ­
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              ſus diſſiliat: ſimili modo reliqui panes ex ordine frangantur. </s>
              <s id="N1D5FD">Verùm mallei
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              ſint longi palmos tres, lati unum, utrinque acuti:
                <expan abbr="eorũ">eorum</expan>
              uerò manubria lignea
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              tres pedes longa: fragmenta ærea, ſiue panes frigidi pilo fuerint fracti, ſiue
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              calefacti malleis, in conclaue ærarium inuehantur.</s>
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            <p id="N1D60A" type="caption">
              <s id="N1D60C">P
                <emph type="italics"/>
              aries poſterior
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              A. P
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              arietes qui ſunt a lateribus
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              B. T
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              igna
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              ſtatuta
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              C. C
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              aminus
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              D. P
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              anes collocati
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              E. L
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              aminæ
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              ferreæ
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              F. S
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              axa
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              G. R
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              aſtrum bidens
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              H. M
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              alleus
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              I.</s>
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          </chap>
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