Vitruvius; Philandrier, Guillaume, Gvlielmi Philandri Castilionii ... In decem libros M. Vitruuii Pollionis de architectura annotationes, 1544

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8971IN LIB. III. ima, calcis columnæ (qui eſt limbus altus ipſius diame-
triparte
.
24.) & apophygis, idest conflexus qui proxi-
me
limbum ſuccedit, cuius diameter eſt breuior diametro
plantæ
, ſeptima parte, ſicut Aſtragali diameter maior
eſt
contracturæ limbi diametro, parte ipſius nona &
am-
plius
dimidia.
Ipſam autem contracturam quomodo fieri
oporteret
paulo ante ex Vitruuii ſententia indicauimus.
His ita deſcriptis, ſigna in media colũna, diametrum
parem
calci ſiue plantæ imi ſcapi, duc lineas rectas à
capitibus
diametri apophygum, ad capita ipſius mediæ
columnæ
diametri, videbis factam adiectionem, qui et
venter
dicitur, quòd ibi videatur columna ſubturgere.

Rectas
autem lineas illas, molliter in dorſum inflectes,
vt
ſint columnæ teretes, ceu tornatiles.
Romæ obſerua-
uimus
, diuiſo ſcapo in parteis tres, imam ad perpendicu-
lum
tornatam, duabus reliquis ſenſim retractis &
dimi-
nutis
, Q uod contracturæ genus multò gratiſſimum.

Superioris
autẽ generis exẽplar eſt in Baſilica.
D. Pe-
tri
.
In fine huius libri Vitru. docet craſſitudines ſtria-
rum
eſſe faciendas, quantum adiectio in media columna
inuenitur
.
Atqui compertum eſt columnarum ſtriges eſſe
viginti
quatuor, ſingularum autem ſtrias, eſſe nihil plus
quam
ex tertiaipſarum parte, nihil minus quàm ex quar-
ta
, vt iam facile ſit coniicere &
ratiocinari, quantum ex
Vitruuii
ſententia in media columna ſit adiiciendum, ni-
hil
contracto imo ſcapo.
Eiuſmodi columna nulla mihi vi-
ſa
eſt, &
haud ſcio an ſit oculo reſponſura, cuius ratio-
nem
habendã maximam ſemper duximus.
Sed & lib. 5.
cap
.
1. indicare videtur colũnas, arborum naturam imi-
tari
, abietis, cupreſſi, pinus, quæ ſenſim ab imo ad

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