No. 159. Doric Capital.
The capital is half a diameter in height, exclusive of the mouldings between the necking and the shaft, and the upper part to the underside of the ovolo occupies rather more than half.
No. 160. Ionic Capital.
The necking is a vertical extension of the upper diameter of the column, and is separated from the shaft by a boldly projecting moulding, which in height should be about equal to the three small fillets below the ovolo. The moulding consists of a torus and a fillet, and a cavetto curve is carried from the underside of the fillet and dies into the line of the shaft of the column.
Sometimes the ovolo is decorated with its characteristic egg and tongue detail, and occasionally the reversa of the abacus is also enriched. The necking is sometimes ornamented with four rosettes, which are placed centrally under the square faces of the abacus.
Ionic Capital
The Ionic capital is half a diameter high, and is readily distinguished by its bolster-like form with voluted ends. This bolster is rectangular on plan, and measures laterally rather more than one and a half diameters, while from back to front it is slightly less than a diameter.
The shaft terminates in a cavetto curve, and is surmounted by a fillet, a small torus and an ovolo moulding, which is invariably decorated with egg and tongue detail. These mouldings all conform to the circular plan of the shaft. On the ovolo rests the voluted bolster.