Benedetti, Giovanni Battista de, Io. Baptistae Benedicti ... Diversarvm specvlationvm mathematicarum, et physicarum liber : quarum seriem sequens pagina indicabit ; [annotated and critiqued by Guidobaldo Del Monte]

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292280IO. BABPT. BENED. interualla ſuperant tonum ſeſquinonum, & ſi eſſent .10. commata ſuperarent tonum
ſeſquioctauum
, eo quod aggregatum ex .9. commatibus continetur ſub iſtis duobus
terminis
hoc eſt .150094635296999121. et .134217728000000000. quæ qui-
dem
proportio maior eſt proportione ſeſquinona, ſumma verò .10. commatum con
tinetur
ſub .12157665459056928801. et .10737418240000000000. quæ pro
portio
maior eſt tono ſeſquioctauo, quod autem dico de aſcenſu cantilenæ, idem aſ-
ſero
de eiuſdem deſcenſu, & hoc non tantum per interuallum illius commatis, quod
eſt
differentia toni maioris à minori, ſed etiam per illud quod eſt differentia ſemito
nij
maioris à minori, vt in ſecundo exemplo hic ſubſcripto videre eſt in deſcenſu
cantilenæ
per comma & comma, vt differentia inter ſemitonia maiora & minora,
vbi
in prima cellula diſcedens baſſus à quinta cum ſuperiori, & ab vniſono cum te-
nore
deſcendens ad tertiam minorem cum ipſo tenore, facit cum ſuperiori ſeptimam
maiorem
, quæ eſt vt .9. ad .5. ſuperquadripartiensquintas ſcilicet, à qua diſcedens
poſtea
ſuperius, vt faciat cum baſſu ſextam maiorem, deſcendit per ſemitonium ma
ius
, à qua ſexta maiori deſcendens baſſus, & aſcendens per quartam, efficit cum di-
cto
ſuperiori tertiam maiorem, à qua diſcedens ſuperius, vt efficiat quartam cum ipſo
baſſu
(qui quidem baſſus tranſit in tenorem) aſcendit per ſemitonium minus, diffe-
rens
à ſemitonio maiori per vnum comma, vnde cantilena remanet depreſſa per
vnum
comma.
cum deinde idem faciat inter tertiam, & quartam cellulam, per a-
liud
comma deſcendit, & ſic toties facere poſſet, vt poſtremo valde deprimatur
cantilena
à primo phthongo.
318[Figure 318]

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