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6The capitals of the triglyphs are to be made the sixth part of a module. Over the capitals of the triglyphs the corona is to be laid, whose projection is one half and a sixth part of a module, with a Doric cymatium over it, and another above it, so that, with the cymatia, the corona is one half of a module high. In the soffit of the corona, perpendicularly over the triglyphs and centres of the metopæ, are arranged guttæ and sinkings. The former, so as to have six guttæ appearing in front, and three on the return: the remaining spaces, which occur from the increased width of the metopæ beyond that of the triglyphs, are left plain or sculptured with representations of thunderbolts, and near the edge of the corona a channel is cut, called a scotia. The remaining parts, the tympana, simæ, and coronæ, are to be executed similar to those described for Ionic buildings.
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