The Fillet
Mouldings are divided from each other by narrow vertical bands or Fillets, the employment of which is universal.
The Fillet in projection is equal to its height, and though strictly divisional in its employment, is shown in conjunction with the curved profiles to indicate relative proportion.
Sheltering Mouldings
There are two mouldings of curved profile in each category, the Sheltering being the Cavetto and the Cyma Recta.
The Cavetto
The Cavetto is the culminating moulding of the Italian Doric cornice, and is a concave curve, which may be the result of a quarter circle.
The Cavetto profile is used in other positions, which would appear to challenge the previous statement, but reflection will confirm the contention.
For instance, the vertical face of the Frieze in some instances terminates with a cavetto curve which, though surmounted by the cornice, is yet at the top of the frieze. The upper extremity of the column shaft is similarly treated, and, it may be urged, so is the lower, but this, though an exception to the rule, is at least an æsthetic necessity.
The projection of the Cavetto is equal to the height of the curve, and the crowning Fillet may be from one-third to one-fourth the total height, preferably the latter.