Rudiments of ancient architecture, containing an historical account of the five orders, with their proportions, and examples of each from antiques also, extracts from Vitruvius, Pliny, &c. relative to the buildings of the ancients (London, 1810 (4. Aufl.))

120 OCT PAL

O.

Octastyle, an edifice having eight co^.
lumns in front.

Odeum, a structure built by Pericles, at
Athens, for the performance of music.
Plutarch says it had within many rows
of seats and of pillars. The roof was of
a conical figure, after the model of the
king of Persia's pavilion.

OZci, halls. See the account of the Ro-
man houses.

Ogee, a cyma reversa.

Order, in Architecture, a column entire,
consisting of base, shaft, and capital,
with an entablature. For a particular
account of each order, see the beginning
of this work.

Ova, or ovum. See Echinus.

Ovolo, a moulding which projects one
quarter of a circle, called also a quarter
round. See Plate 8.

P.
Palm. See Measure.