The Nineteenth Figure.

The Corinthian Base in Perspective.

This Base is put in Perspective by the Rules before laid down. The Height of the Superficies A is the same with that of the visual Line CD; the Breadth of the Cross A is the same with that of the second Circle of the Plan B, beginning with the least. The two Lines that stand perpendicularly on the Surface of the Base, shew the greatest Breadth of the Columns Shaft above the Fillet. The Extent of the upper Torus and the two Astragals, is the same with that of the third Circle; and the Extent of the lower Torus is the same with that of the outward Circle.

Fig. xx.