Vitruvius Pollio, I dieci libri dell?architettura, 1567

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                <p type="main">
                  <s id="s.002528">
                    <pb pagenum="114" xlink:href="045/01/122.jpg"/>
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                  ſideratione.
                    <emph.end type="italics"/>
                  </s>
                  <s id="s.002529"> Et quando al conto fatto per l'aggionta d'un'altro aſſe, ſi creſca al ſei, chia­
                    <lb/>
                  mano Ephecton: & quando ſono fatti otto, perches'è aggiunta la terza parte; ſi dice Epi
                    <lb/>
                  triton. </s>
                  <s id="s.002530">& aggiuntaui la metà, poi che s'è peruenuto al noue, chiamaſi ſeſquialterum, che
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                  da Greci è detto, hemiolios. </s>
                  <s id="s.002531">aggiunteui poi due parti, & fatto lo incrocciamento, ſi dice
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                  beſalterum, il quale chiamano Epidimiron. </s>
                  <s id="s.002532">& nel numero di undici, perche ſe gli è ag­
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                  giunto cinque, che ſi chiama quintario, Epipentamiron ſi dice. </s>
                  <s id="s.002533">Ma dodici, perche è fat
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                  to di due ſimplici numeri diplaſiona è nominato. </s>
                </p>
                <p type="main">
                  <s id="s.002534">
                    <emph type="italics"/>
                  Et queſto è ſtato aſſai dichiarito. </s>
                  <s id="s.002535">Vuole poi Vitruuio, che dal numero ſenario ſia ſtata piglia
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                  ta la ragione della miſura del corpo humano, in quanto all'altezza ſua.
                    <emph.end type="italics"/>
                  </s>
                </p>
                <p type="main">
                  <s id="s.002536">Similmente perche il piede è la ſeſta parte dell'altezza dell'huomo, però coſi da quel nu
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                  mero di piedi, dal quale è miſurato, & perfetto il corpo terminandolo in altezza con que
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                  ſti ſei lo fecero perfetto. </s>
                  <s id="s.002537">& auuertirono, che il cubito era di ſei palmi, & di uentiquat­
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                  tro dita. </s>
                </p>
                <p type="main">
                  <s id="s.002538">
                    <emph type="italics"/>
                  Si come dalle dita è uenuta la ragione del numerare, coſi anche è uenuta la ragione del miſura
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                  re, & coſi la ragione del numero ſenario entra nelle miſure. </s>
                  <s id="s.002539">Et qui Vitr. ragiona ſecondo la opi­
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                  nione de Greci, i quali uoleuano, che ſei fuſſe numero perfetto. </s>
                  <s id="s.002540">La onde anche alle monete traſ­
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                  ferirono il numero predetto. </s>
                  <s id="s.002541">Et però dice Vitr.
                    <emph.end type="italics"/>
                  </s>
                </p>
                <p type="main">
                  <s id="s.002542">Et da quello pare, che le città de Greci habbiano fatto, che ſi come il cubito è di ſei pal
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                  mi, coſi ſi uſaſſe lo iſteſſo numero nella dramma. </s>
                  <s id="s.002543">perche quelle città fecero, che nella dram
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                  ma fuſſe la ualuta di ſei ramini ſegnati (come aſſe) che quelli chiamano Oboli, & con­
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                  ſtituirono in uece di uentiquattro dita nella dramma i quadranti de gli oboli, detti da alcu
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                  ni dichalchi, & da alcuni trichalchi. </s>
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                <p type="main">
                  <s id="s.002544">
                    <emph type="italics"/>
                  Voleuano i Greci che la loro dramma ualeſſe ſei oboli, & queſto riſpondeua al cubito, che
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                  contiene ſei palmi; uoleuano, che ciaſcun' obolo haueſſe a ŭalere quattro monete, che ſi chia­
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                  mauano dichalchi, la doue uentiquattro dichalchi faceuano una dramma, come uentiquattro
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                  dita fanno un cubito. </s>
                  <s id="s.002545">obolo era una moneta di rame di poca ualuta, ſegnata però, & coniata,
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                  & era come un tutto, che aſſe ſi chiama, & la quarta parte detta quadrante ſi nominaua di­
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                  chalco, ouerotrichalco ſecondo diuerſi riſpetti. </s>
                  <s id="s.002546">Come adunque il numero de gli oboli nella dram
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                  ma riſpondeua al numero de i palmi, che uanno a fare il cubito, che ſono ſei, coſi il numero de i
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                  dichalchi, o trichalchi nell'obolo riſpondeuano al numero delle dita, che erano nel cubito uenti­
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                  quattro. </s>
                  <s id="s.002547">la onde appare, che anche nelle monete i Greci habbiano pigliato la ragione de i nume­
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                  ri: & in questo caſo crediamo a Vitr.
                    <emph.end type="italics"/>
                  </s>
                </p>
                <p type="main">
                  <s id="s.002548">Ma i noſtri prima fecero l'antico numero eſſer il dieci, & poſero nel denario dieci aſsi
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                  di rame, & però fin al dì d'hoggi la compoſitione della moneta ritiene il nome del dena­
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                  rio, & la quarta parte di eſſo perche ualeua due aſsi, & mezo, la chiamarono ſeſtertio, ma
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                  poi hauendo auuertito, che l'uno, & l'altro numero era perfetto, cioe il ſei, & il dieci,
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                  raccolſero inſieme amendue que numeri, & fecero il ſedici perfetto. </s>
                  <s id="s.002549">& di queſto tro­
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                  uarono il piede autore. </s>
                  <s id="s.002550">perche leuando dal cubito palmi due, reſta il piede di quattro
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                  palmi, ma il palmo ha quattro dita, & coſi il piede uiene hauere ſedici dita', & tanti aſsi
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                  il denario di rame. </s>
                </p>
                <p type="main">
                  <s id="s.002551">
                    <emph type="italics"/>
                  I palmi ſono due, maggiore, & minore, il minore è di quattro dita: il maggiore di dodici,
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                  quello ſi chiama palæſte, queſto ſpithame: dito, o digito è lo ſpacio di quattro grani d'orzo poſti
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                  in ordine ſecondo la larghezza. </s>
                  <s id="s.002552">Dice adunque Vitr. che Romani pigliarono da prima il dieci co­
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                  me numero perfetto, & però chiamarono la moneta dinario, (& queſto pare ragioneuole) co­
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                  me fin hora ſi uſa. </s>
                  <s id="s.002553">& nel denario poſero dieci aſſi di rame. </s>
                  <s id="s.002554">& ſe bene dapoi congiunſero il dieci, et
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                  il ſei, uedendo, che anche il ſei era perfetto, ritennero però il nome del denaio mettendo in un de­
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                  naio ſedici aſſi, che riſpondino, a ſedici dita, che uanno nel piede. </s>
                  <s id="s.002555">ſtando adunque le predette co­
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                  ſe Vitru. conchiude, & dice.
                    <emph.end type="italics"/>
                  </s>
                </p>
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