Vitruvius, Marci Vitruvii Pollionis De architectura libri decem : ope codicis Guelferbytani, editionis principis, ceterorumque subsidiorum recensuit, et glossario in quo vocabula artis propria Germ. Ital. Gall. et Angl. explicantur, 1800
<pb o="242" file="0266" n="266" rhead="M. VITRUVII P. DE ARCHITECTURA"/>
tibus in partes octo, ductis lineis: </s>
<s xml:id="echoid-s4188" xml:space="preserve">eaeque lineae ita collocentur, ut in
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plano poſito tigno ad libellam, utriusque capitis lineae inter ſe reſponde-
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ant ad perpendiculum: </s>
<s xml:id="echoid-s4189" xml:space="preserve">ab his deinde a capite ad alterum caput lineae per-
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ducantur convenientes, uti quam magna erit pars octava circinationis tig-
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ni, tam magnis ſpatiis diſtent ſecundum latitudinem. </s>
<s xml:id="echoid-s4190" xml:space="preserve">Sic et in rotunda-
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tione et in longitudine aequalia ſpatia fient. </s>
<s xml:id="echoid-s4191" xml:space="preserve">Ita quo loci deſcribuntur
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lineae, quae ſunt in longitudine ſpectantes, faciendae decuſſationes, et in
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decuſſationibus ſinita puncta. </s>
<s xml:id="echoid-s4192" xml:space="preserve">His ita emendate deſcriptis, ſumitur ſali-
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gnea tenuis, aut de vitice ſecta regula, (c) quae uncta liquida pice figitur
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in primo decuſſis puncto: </s>
<s xml:id="echoid-s4193" xml:space="preserve">deinde trajicitur oblique ad inſequentes longi-
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tudines et circuitiones decuſſium . </s>
<s xml:id="echoid-s4194" xml:space="preserve">Et ita ex ordine progrediens, ſin-
gula puncta praetereundo et circuminvolvendo, collocatur in ſingulis de-
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cuſſationibus: </s>
<s xml:id="echoid-s4195" xml:space="preserve">et ita pervenit et figitur ad eam lineam, recedens a primo
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in octavum punctum, in qua prima pars ejus eſt fixa. </s>
<s xml:id="echoid-s4196" xml:space="preserve">Eo modo quan-
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tum progreditur oblique per ſpatium et per octo puncta, tantundem in
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longitudine procedit ad octavum punctum. </s>
<s xml:id="echoid-s4197" xml:space="preserve">Eadem ratione per omne
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ſpatium longitudinis et rotunditatis ſingulis decuſſationibus oblique fixae
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regulae, per octo craſſitudinis diviſiones involutos faciunt canales (b), et
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juſtam cochleae naturalemque imitationem. </s>
<s xml:id="echoid-s4198" xml:space="preserve">Ita per id veſtigium aliae
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ſuper alias figuntur unctae pice liquida, et exaggerantur ad id, ut longi-
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tudinis octava pars fiat ſumma craſſitudo. </s>
<s xml:id="echoid-s4199" xml:space="preserve">Supra eas circumdantur et fi-
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guntur tabulae (G), quae pertegant eam involutionem: </s>
<note symbol="3)" position="foot" xlink:label="note-0266-02" xlink:href="note-0266-02a" xml:space="preserve">Verba ſequentia non leguntur in Cod. mn. et in Edit. Sulp.</note>