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the dressings. The upper members of the door-way arethe same as those of the Doric. The trusses (ancones),or prothyrides, which are carved on the right and left,reach to the bottom of the level of the architrave, exclu-sive of the leaf. Their width on the face is one-third ofthe dressing, and at the bottom one-fourth part less. Thewooden doors are to be so put together, that the hingestyles (scapi cardinales) maybe one-twelfth of the heightof the aperture. The pannels (tympana) between thestyles are to be three out of twelve parts in width. Thearrangement of the rails is to be such, that when theheight is divided into five parts, two are given to theupper and three to the lower rail. In the centre themiddle rails (medii impages) are placed; the others aredisposed above and below. The width of the rail is tobe one-third of the pannel, and its cymatium a sixth partof the rail itself. The width of the inner styles is one-half of the rail, and the raising (replum) four-sixths ofthe rail. The styles nearest the dressings are made one-half of the rail. If the doors are folding, the height re-mains the same, but the width is to be increased. If infour folds the height is to be increased. The Attic doorsare made of the same proportions as the Doric, exceptthat, in the dressings, the fasciae return within the cy-matium ; and these are proportioned so, that exclusive ofthe cymatium, they are to be two-sevenths. These doorsare not to be inlaid (cerostrota), nor in two folds, butsingle folded, and to open outwards. I have explained, tothe best of my power, the proportions used in settingout Doric, Ionic, and Corinthian temples, according tothe approved methods. I shall now treat of the arrange-ment of Tuscan temples, and how they ought to be built.