Page:Ware - The American Vignola, 1920.djvu/22

12 In the Denticulated Doric, Figs. 56, 57, and 58, the place of the Fillet and Ovolo above the Cap of the Triglyph is taken by a large Cyma Reversa, the soffit of which is wider over the Metopes than over the Triglyphs, as is that of the small Fillet in the Mutulary. Above this molding is a band like the Mutule Band, but instead of brackets, extending out under the Corona, it bears a row of small blocks, like teeth called Dentils. These are one-eighth of a Diameter high, and are set one-eighth of a Diameter from center to center, or edge to edge. If this last dimension is divided into thirds, two of these go to the Dentil, and one to the space between it and the next one.. This space is called an Interdentil, which is accordingly one twenty-fourth of a Diameter wide. The Dentil is thus one-eighth of a Diameter long and one-twelfth wide, or half a sixth, or of the proportions of two to three, like the Triglyph. The face of the last Dentil on the corner and the side of the first one around the corner come together in elevation without any Interdentil, giving the appearance of a Double Dentil, for the Dentils are square in plan and the side is just as wide as the face, Fig. 58.

As the Triglyphs are a Diameter and a quarter on centers-, or ten-eighths, there are ten Dentils to each Triglyph and Metope.

A Dentil comes just over the axis of each Column and there are three Dentils between the one over the corner Column and the Double Dentil on the corner, the farther edge of the third one being just over the face of the Frieze, or five-twelfths of a Diameter from the axis of the Column.

The last Dentil, or first half of the Double Dentil, is centered over the outer face of the bottom of the shaft, Fig. 92.

The Dentils constitute the upper member of the Bed Mold. They leave the chief part of the Corona unsupported, but the soffit of the Corona, which is slightly inclined, recalling the slope of the rafters, is not so wide as the soffit of the Mutulary Doric, owing to this encroachment of the Dentils. The Mutules, which are very shallow, have, accordingly, only eighteen Gutta? in place of thirty -six; that is, three rows instead of six. There is also a Mutule over each Metope, as well as one over each Triglyph.

Vignola gives his Denticulated Doric a large Cavetto for a Cymatium, or gutter, instead of a Cyma Recta, and supports the Echinus of the Capital by three fillets, instead of by a Fillet and Bead, Fig. 58.

The Triglyphs are three-quarters of a Diameter high and half a Diameter wide, Fig. 59. This width is divided into three parts, called Shanks'. Each Shank, or Femur, is beveled on the edge nearly up to the top of the Triglyph, making in all two channels and two half channels. ' Each Shank is one-sixth of a Diameter wide and each beveled face a quarter of a sixth. The plain face of the Shank is, accordingly, one-twelfth, and just as wide as the channel. These are almost