The distinction and difference in the several Orders; consists in the Strength and Ornament; Vitruvius speaks but of three Orders, [85.]
Art. 4. Of things that are common to several Orders, [85.]
There are seven things common to all Orders, viz. Steps, [85.] Pedastals, [86.] the diminution of Pillars, the Channelings of Pillars, which is of three sorts, [89.] the Piedemont, [90.] Cornices, and Acroteres, [93.]
Art. 5. Of the Tuscane Order, [93.]
The Tuscane Order consists in the Proportion of Columns, in which there are three parts, the Base, the Shaft, and the Capital, [94.] Of Chambrantes; and of the Piedement, [95.]
Art. 6. Of the Dorick Order, [96.]
The Dorick Order consists in the proportion; of the Columns, which have been different at diverse times, and in diverse Works, [96,] [97.] The parts of the Column are the Shaft; the Base which it anciently wanted, but hath since borrowed from the Attic; the proportion of the Base, [97.] and the Captial, [98.] the Archiatrave, which hath two parts, the Platbands and the Gouttes, [98.] the Frise, in which are the Triglyphs and the Metops, [98.] the Proportion of them, [99.] Of the Cornice, its proportion, [99.]
Art. 7. Of the Ionick Order, [101.]
The preportion of Pillars of this Order, [101.] The Pillars set upon the Bases two ways, perpendicular, and not so, [101.] Proportion of the Base, divided into its parts the Plinthus, the Thorus, the Scotia upper and lower, with the Astragals, [102.] Of the Capital, its proportion and parts, [103.] Of the Architrave, wherein to be considered, the proportion it must have to the Pedestals, and to the heighth of the Column, 105. to the breadth at the bottom, [106.] and to the jetting of the Cymatium, [106.] Of the Frise and Cornice, [107.]
Art. 8. Of the Corinthian Order, [108.]