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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Quam diuiſionem, ſi in triangulo ſeorſum deſcripto inuenire voluerimus, res erit
inuentu
facillima, cum rectum angulum .f.t.d. (reſpondentem ſuo .H.D.C.) prędicti
trianguli
tertij ea ratione diuiſerimus, & c.
Alius verò locus ipſius Reuerendi Clauij, contra meas repręhenſiones, eſt circa
finem
pag .298. & circa .299. vbi ita ſcribit.
Ex his liquido conſtat, non rectè à Ioan. Baptiſta Benedicto in ſua gnomonica ca
pit
.49. repręhendi hancrationem deſcribendi horologij declinantis, qua omnes fe-
alij ſcriptores vtuntur, quoniam, vt ex demonſtratione à nobis allata conſtat, re-
ctè
per eam lineæ ho rarię in plano, quod à verticali declinat ducuntur.
Modus au
tem
quem eo loco pręſcribit differentem ab eo, quem nos tradidimus certus etiam
eſt
, ſed nulla ratione noſtro contrarius, quia nos conſtituimus .D.E.F. angulum de-
clinationis
plani à verticali circulo propriè dicto, ipſe autem loco huius anguli aſſu-
mit
angulum declinationis eiuſdem plani à Meridiano circulo, vnde mirum non eſt
modum
ipſius à noſtro diſcrepare.
Quod ſi conſtitueremus .D.E.F. angulum decli-
natio
nis plani à Meridiano, ut ipſe (quemadmodum forſitan ab alijs putauit fieri)
& in reliqua deſcriptione progrederemur, vt tradidimus, proculdubio horologium
declinans
perperam deſcriberetur, vt rectè docet.

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