shape is interrupted by the two figures, seated one on each side. The circle seems to pass behind these till it merges with the clouds below. Both the small and the large circles repeat the outside curves of the lunette. On the other hand the curve of the clouds, and the figures seated upon them form a contrasting curve, and there is another one higher up, formed by the two groups of floating angels. In the center, above the larger circle, is a figure with a nimbus that points up, carrying our eye toward an imaginary center, somewhere outside the picture, from which start the radiating lines. So the impression of that part of the picture that we have been examining is of uplift. By successive steps the eye and, through it, the imagination, are invited to mount up.