The Ordonnance of the Partis. 6g

Opinion, that this Arch was built with the Ruins of some otherStructure, where 'tis very probable the Columns stood upon theLevel of the Pavement. The Proportion of the Hollow of theFlutings, to the List between them, which is what we call the Side,is not perfectly determin’d, but the mean Proportion is to give theSide a third Part of the Breadth of the Fluting : that is to fay, eachtwenty-fourth Part of the Periphery of the Column being dividedinto four, three of them should be given to the Fluting, and oneto the Side.

These Flutings have different Characters, as to the Mannerhow they terminate towards the Sweeps at the Bottom and Topof the Shaft. The most usual, is to make them round as the Headof a Niche : Sometimes these Extremities are cut quite strait, as inthe Temple of Vesta, at TtVoli 3 sometimes they are cut just con-trary to the first mention’d, the Naked of the Column making aSemi-circle on the Fluting, as they were at the Tuteles at ! Bour-deaux.

The Ionic Capital consists of three parts: namely, an Abacus, Capital,which has no more than an Ogee and its Fillet 3 a Rind, whichproduces the Volutes or Scrouls, and an Ovolo, or Quarter-round 5for the Astragal, that is under the Ovolo, belongs to the Shaft ofthe Column. The middle part is, by some, calFd the Rind orBark, because it resembles the thick Bark of a Tree, which havingbeen laid on the Top of a Vase, whose Brim is represented by theOvolo, seems, in Drying, to be shrunk up underneath. VitruYutfays, that this twirling, which the Volutes make on both Sides theCapital, represents the Locks of Hair, which turn into Rings orBuckle, on each Side the Womens Faces.

To find the Height of this Capital taken from the Top of theAbacus down to the Astragal, the little Module must be dividedinto twelve Parts, eleven of which are given to the whole Capital,the Abacus having three, namely, two for its Og^e, and one forits Fillet 3 the Rind has four, one of which is for its Rim 5 andthe Ovolo has also four. From the Top of the Abacus, to theBottom of the Volute, are nineteen of these twelfth Parts of thelittle Module.

To describe the Contour of the Volute, you must begin at theAstragal, on the Top of the Column, which should have two ofthe forementiond Twelfths in Thickness, and extend to the rightand left, as much as the Diameter of the Column below. ThisAstragal being drawn on the Face, where the Volute is to be trac d,a level Line must be drawn through the middle of the Astragal,and continued beyond the Extremity thereof: then, from the Topof the Abacus, let fall Perpendicular to the former, another Line

S passing