When we see the whole Pantheon on the ceiling and walls of great staircases, this undoubtedly might be defended on the ground that a mere passing impression of magnificence is intended: but the exuberance of quantity rather than of quality is here obvious. In whatever mode the walls of the staircase are adorned, the decoration should be entirely subservient to the architectural effect. This involves a more radical objection to the mythologic crowds before alluded to, because they have frequently the effect (and intentionally so) of destroying all idea of the angles of the building. I am of opinion, on the contrary, that the decorator should dispose his paintings in shapes which shall appear to grow out of and complete the architecture. The inclination of the panelling of the wall to agree with the line of the stairs, may be considered incompatible with paintings: a horizontal termination, perhaps level with the chief landing-place, is essential, and the triangular spaces, or sections of such spaces, between this and the stairs, had better be left nearly plain, and not very light in colour. Of all mistakes, that of introducing painted figures, sometimes the size of life, where living figures must so often come in contact with them, is the worst. The compartment or compartments above the horizontal line might be painted in fresco, certainly not in oil on the wall, nor in the newly revived encaustic, at least not till it has been further tried. The figures should not extend to the angles of the walls where the staircase turns; the pseudo or real compartments which form the frames might finish at a little distance from the angle; the real wall is, in short, never to be lost sight of; and whatever merits ocular illusion may have in paintings generally, it would be injudicious to attempt it here. Where the light is unfavourable for painting, the flattest style of bas-relief is still admissible. But as you are especially desirous of having your staircase coloured, I really can propose nothing fitter to gratify the eye and imagination merely, than the more refined and at the same time familiar subjects of the Greek mythology; such as the personifications of Poetry, the progress of the Hours and of Light, and so forth. Such subjects afford the best materials for mere beauty of line and drapery, for composition generally, and, if not too statue-like, for colour; and even when they suggest no profounder range of thought, (not that their import is necessarily thus superficial,) they leave an elegant impression on the mind. The objection is, that they are old; but there would be some novelty in treating them as detached compositions, instead of beclouding and peopling the whole space in the style of the seventeenth century. It is to be remarked, that Raphael and Michael Angelo bounded their compositions of this kind by definite forms, especially on ceilings. Pietro da Cortona and the machinists generally, were as intent on destroying the connection