Page:Ware - The American Vignola, 1920.djvu/23

Rh the only beveled faces to be found in the whole range of Classical Architecture, though beveled fillets are not uncommon. The two full channels are generally cut in at an angle of 45 degrees, but the two half channels on either side are shallower, and do not reach the face of the Frieze.

A Triglyph comes exactly over each Column, and one or two over each Intercolumniation. The portion of the Frieze between the Triglyphs is called a Metope. It is exactly square, being three-quarters of a Diameter wide. The fragment of a Metope between the last Triglvph and the corner of the Frieze is one-sixth of a Diameter wide. The face of the Metopes comes over the lower band of the Architrave, and that of the Triglyph projects slightly beyond the face of the upper Band.

The Column is eight Diameters in height, the Base, Capital, and Architrave each half a Diameter, the Frieze and Cornice each three-quarters. The total projection of the Cornice, including the Cymatium, is one Diameter. The Architrave is divided into two Bands, or Fascias. The lower one occupies the lower third of the Architrave, and the Taenia, Regula, and Guttse the upper third. Half of this third goes to the Taenia, the projection of which equals its height.

The Doric Column has twenty Channels, each about one-sixth of a Diameter wide, which show in section, Fig. 60, an arc of 60 degrees. The solid edge that separates them, called the Arris, makes an angle of something over 90 degrees (102 degrees). The ten Arrises shown in elevation are easy to draw, as two come on the outline of the Shaft, two come on its "corners," and the two middle ones are almost exactly one-sixth of a Diameter apart. The channels are .157 of a Diameter wide, so that making the middle one-sixth, or .166 of a Diameter, involves an error of only .009 of a Diameter, or about one-eighteenth of its width. The four other Arrises can then be put in without much difficulty.

The Doric Base and Capital, Figs. 54 and 58, are divided, like the Tuscan, into halves and thirds, but with additional moldings, a bead being added above the Torus of the Base, and another below the Echinus of the Capital. The Abacus is crowned by a cymatium consisting of a Fillet and Cyma Reversa. If the height of the Capital is divided into thirds, each of the two upper thirds again into thirds, and the upper and lower of these still again into three equal parts, all the horizontal lines of the Capital will be determined, as shown in Plate V. The base, including the Cincture, as in the Tuscan Order, is half a Diameter high.

Vignola's Denticulated Doric is imitated closely from the Doric Order of the Theater of Marcellus, and the Mutulary, which he has been thought to have invented, seems to have been derived from the Doric Order of the Basilica Julia, Fig. 61. There are no Roman Doric temples.