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

Table of figures

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              attinet alijs aſſimile: quæ omnia iccirco tam longa bacilla habent ferrea, ne
                <lb/>
              ignis ligneum manubrium comburat. </s>
              <s id="N19D94">Porrò cùm iam ſtannum fuerit ex
                <lb/>
              catino effuſum, tum præfectus rationibus, & præſes fodinæ panes appen­
                <lb/>
              dant. </s>
              <s id="N19D9B">Magiſter uerò conto totum fornacis os perfringat: atque ex ea altero
                <lb/>
              conto uncinato & rutro ac raſtro quinquedenti cadmias & carbones extra
                <lb/>
              hat. </s>
              <s id="N19DA2">Contus ille non diſſimilis ſit altero uncinato, ſed maior & latior. </s>
              <s id="N19DA5">Rutri
                <lb/>
              uerò manubrium longum ſex pedes, ex dimidia parte ferreum exiſtat, ex di
                <lb/>
              midia ligneum. </s>
              <s id="N19DAC">Fornace autem refrigerata magiſter cadmias ad parietes ad­
                <lb/>
              huc
                <expan abbr="adhærẽtes">adhærentes</expan>
              decutiat ſpatha quadrangula, longa digitos ſex, lata
                <expan abbr="palmũ">palmum</expan>
              ,
                <lb/>
              priore parte acuta: quæ teres manubrium habeat longum pedes quatuor,
                <lb/>
              dimidia ex parte ferreum, ligneum ex dimidia. </s>
              <s id="N19DBD">Atque hæc prima
                <expan abbr="uenarũ">uenarum</expan>
              ex
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              coquendarum ratio eſt. </s>
              <s id="N19DC6">Venæ autem auri & argenti diuites, quia plerunque
                <lb/>
              ex inæqualibus partibus conſtant, quorum aliæ ocyus, aliæ tardius liquan­
                <lb/>
              tur, tribus potiſſimum de cauſis non poſſunt alia ratione citius & commo­
                <lb/>
              dius excoqui: quarum una eſt: quoties os fornacis oppilatum conto aperi­
                <lb/>
              tur, toties excoctor poteſt conſiderare
                <expan abbr="utrũ">utrum</expan>
              uena nimis lente uel cito lique­
                <lb/>
              ſcat, an ſparſim feruens non coeat in unum: primo modo uena tardius exco
                <lb/>
              quitur non ſine maiore impendio: altero metallum, cum recrementis permi
                <lb/>
              ſtum, ex fornace effluit in catinum, in quod recoquendum rurſus impenſa
                <lb/>
              facienda eſt: tertio
                <expan abbr="metallũ">metallum</expan>
              ignis ardore conſumitur. </s>
              <s id="N19DE1">His uerò incommodis
                <lb/>
              hæc remedia ſunt: ſi uena lente liqueſcit aut non coit, oportet aliquam por­
                <lb/>
              tionem ad additamenti, quod uenam liquefacit, pondus adijcere: ſi nimis
                <lb/>
              cito liqueſcit, aliquam de eo detrahere. </s>
              <s id="N19DEA">Altera cauſa eſt: toties miſturam au­
                <lb/>
              ri cum plumbo, uel argenti cum eodem, quod ſtannum nominatur, experi­
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              ri poſſumus, quoties ea ex fornace, conto aperta, effluxerit, & in catino reſe­
                <lb/>
              derit: quod experimentum nos docet de miſtura auro uel argento ne ſit di­
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              uitior facta, cùm os fornacis aut ſecundo recluditur aut tertio: an debilis &
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              uiribus carens nullum amplius aurum uel argentum ſorbuerit. </s>
              <s id="N19DF7">Etenim ſi di
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              uitior facta fuerit, aliqua plumbi portione ad eam adiecta uires eius refici de
                <lb/>
              bent: ſi non, ex catino eſt effundenda ut aliud plumbum recens imponi
                <lb/>
              poſſit. </s>
              <s id="N19E00">Tertia cauſa de tribus eſt: quando quidem fornacum os, cum uenæ
                <lb/>
              cæteris rationibus excoquuntur, ſemper patet, anteaquam auri uel argenti
                <lb/>
              diuites, quæ eiuſmodi ſunt ut diutius repugnent & reſiſtant ignis ardori, ca
                <lb/>
              lefiant & liquentur, additamenta facile liqueſcentia ex fornacibus effluunt. </s>
              <s id="N19E09">
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              Sequitur igitur, ut aliqua
                <expan abbr="taliũ">talium</expan>
              uenarum pars aut comburatur aut cadmia
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              commiſceatur: quo modo interdum uenarum maſſulæ, prorſus non lique­
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              factæ, in cadmia ſolent inueniri: contra cùm eædem ore fornacis ad tempus
                <lb/>
              clauſo excoquuntur, neceſſe eſt ipſas & additamenta ſimul coqui & permi­
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              ſceri. </s>
              <s id="N19E19">Quanquam enim additamenta citius quàm uenæ liqueſcunt, tamen ea
                <lb/>
              liquefacta, quia ſunt in fornace concluſa, uenam quæ non facile liquatur, li­
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              quefaciunt & cum plumbo permiſcent. </s>
              <s id="N19E20">Id enim combibit aurum uel argen
                <lb/>
              tum non aliter ac plumbum candidum uel nigrum, in catino liquefactum,
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              ſorbet aliud non liquefactum, cùm in ipſum coniectum fuerit. </s>
              <s id="N19E27">Si uerò lique
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              factum non liquefacto ſuperfunditur, id, quia undique defluit, ſimiliter non
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              liquefacit. </s>
              <s id="N19E2E">Ex his igitur omnibus ſequitur uenas auri uel argenti diuites </s>
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