This plate amplifies the information set out in plate 24. The lower drawing shows the cornice in plan form. The configuration is dictated by the spacing of the consoles at two thirds of the column diameter. As in the Doric order, the exposed soffit between consoles contains a square sunk panel, with a flat margin of constant width. Unlike the Doric, however, where the mutules align over column centres, the spacing of the consoles is so contrived that there is also a square panel at the corner of the soffit. This satisfying arrangement depends on careful manipulation of the depth of the corona projection and the breadth of the consoles. Gibbs achieves it by some juggling of the console spacing whilst Chambers lets the consoles project right to the face of the corona, for a less attractive layout.
The upper figures show plan and elevations of a console. Because of the double volute and reverse curve this is an awkward pattern to set out. It is therefore most helpful simply to overlay my drawing of the side elevation with a square grid, each square measuring 0.01 diameters, amplified with the leading dimensions. The location of key parts of the elevation can be readily transcribed to any scale by drawing a similar grid and annotating the coordinates. The double volute is supported, and masked on its underside, by an acanthus leaf which grows from it and mirrors its general contours. Note that the flat face of the volute tapers slightly, being broader in the larger, base volute than in that at the extremity. On the end, the scroll is 'gathered' rather like the volute of the Ionic column.
25. THE CORINTHIAN ENTABLATURE
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