The cornice (cf. Fig. 65) consists of two
principal parts. First comes a projecting block, into whose face
rectangular cuttings have been made at short intervals, thus
leaving a succession of cogs or DENTELS; above these are moldings.
Secondly there is a much more widely projecting block, the CORONA,
whose under surface is hollowed to lighten the weight and whose
face is capped with moldings. The raking cornice is like the
horizontal cornice except that it has no dentels. The sima or
gutter-facing, whose profile is here a cyma recta (concave above
and convex below), is enriched with sculptured floral ornament.
In the Ionic buildings of Attica the base of the column consists
of two tori separated by a trochilus. The proportions of these
parts vary considerably. The base in Fig. 66 (from a building
finished about 408 B.C.) is worthy of attentive examination by
reason of its harmonious proportions. In the Roman form of this
base, too often imitated nowadays, the trochilus has too small a
diameter. The Attic-Ionic cornice never has dentels, unless the
cornice of the Caryatid portico of the Erechtheum ought to be
reckoned as an instance (Fig.
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