Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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COSMOTHEOROS, LIB. I.
"/>
cta ſunt. </
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<
s
xml:id
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xml:space
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">Si enim ex noſtris Muſicis quæras, cur conſo-
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nantia diapente poſt aliam ſimilem vitioſe ponatur, dicent
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alii nimiam dulcedinem devitari, quæ ex gratiſſimæ con-
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ſonantiæ iteratione naſcatur: </
s
>
<
s
xml:id
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echoid-s9247
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xml:space
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">alii varietatem in harmonicis
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ſequendam eſſe. </
s
>
<
s
xml:id
="
echoid-s9248
"
xml:space
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preserve
">Hæc enim præcipui artis auctores, cum-
<
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que iis Carteſius, adferunt. </
s
>
<
s
xml:id
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echoid-s9249
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xml:space
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">At Jovis aut Veneris incola
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<
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xlink:label
="
note-0425-01
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xlink:href
="
note-0425-01a
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xml:space
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">Cur conſo-
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nantia dia-
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pente poſt
<
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aliam ſimi-
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lem vitioſe
<
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ponatur.</
note
>
forſan veriorem hanc cauſam demonſtrabit, quod à Dia-
<
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pentè ad aliam deinceps pergendo, tale quid fiat, ac ſi re-
<
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pente toni ſtatum immutemus; </
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<
s
xml:id
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xml:space
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">cum Diapente, unà cum
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interjecto ditoni ſono, (qui ſi deſit, mente ſuppletur)
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toni ſpeciem certo conſtituat: </
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>
<
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xml:space
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">hujuſmodi vero ſubita com-
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mutatio auribus merito injucunda inconditaque judicetur;
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</
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<
s
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echoid-s9252
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xml:space
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preserve
">cum etiam in univerſum ea plerumque durior accidat,
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(præterquam in tranſitu) quæ fit à tribus ſonis conſonis,
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ad trium aliorum harmoniam, nullo priorum manente. </
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Sciet etiam ille idem fortaſſe, quod nemo adhuc animad-
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vertit noſtrorum hominum, cur in nullo vocis unius, plu-
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riumve cantu, tonus ſervari poſſit in eadem altitudine ac
<
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tenore, niſi conſonantia intervalla pleraque ultro, ac ne-
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mine advertente, ita temperentur, ut à perfectione ſumma
<
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nonnihil deſciſcant. </
s
>
<
s
xml:id
="
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xml:space
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">Et cur optimum ſit hoc tempera-
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mentum in chordarum ſyſtemate, cum ex Diapente quarta
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pars commatis ubique deciditur. </
s
>
<
s
xml:id
="
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xml:space
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">Quod idem abſque ſen-
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ſibili diſcrimine effici ex diviſione Diapaſon in partes æqua-
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les 31, indeque Cyclum quendam Harmonicum in ſe re-
<
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deuntem exiſtere, non ita pridem oſtendimus. </
s
>
<
s
xml:id
="
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xml:space
="
preserve
">Quod ta-
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men Planetarum incolæ ſi perſpexerunt, etiam Logari-
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thmorum numeri iis noti eſſe debebunt.</
s
>
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</
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<
s
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xml:space
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">At de Tono vocis temperando quod dixi, probatio-
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<
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position
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right
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xlink:label
="
note-0425-02
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xlink:href
="
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xml:space
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">Demon@tra-
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tio tempera-
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menti in to-
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no vocis ad-
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hibendi.</
note
>
nem habet non difficilem; </
s
>
<
s
xml:id
="
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xml:space
="
preserve
">quam hic adjungimus, quan-
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doquidem jam aliquid præter ſomnia noſtra venditare cœ-
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pimus. </
s
>
<
s
xml:id
="
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xml:space
="
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">Ajo itaque, ſi quis canat deinceps ſonos, quos
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Muſici notant Literis C, F, D, G, C, per intervalla con-
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ſona, omnino perfecta, alternis voce aſcendens deſcen-
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denſque; </
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<
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xml:space
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">jam poſteriorem hunc ſonum C, toto Comma-
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te, quod vocant, inferiorem fore C priore, unde cani </
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