The river flows fiercely under the shadow of a great rock. From its opposite shore, thickets of close, gloomy foliage rise against the rolling chasm of heaven, through which breaks the brightness of the descending Spirit. Across these, dividing them asunder, is stretched a horizontal floor of flaky cloud, on which stand the hosts of heaven. Christ kneels upon the water, and does not sink; the figure of St. John is indistinct, but close beside his raised right arm there is a spectre in the black shade; the fiend, harpy-shaped, hardly seen, glares down upon Christ with eyes of fire, waiting his time. Beneath this figure there comes out of the mist a dark hand, the arm unseen, extended to a net in the river, the spars of which are in the shape of a cross. Behinds this the roots and under stems of the trees are cut away by the cloud, and beneath it, and through them, is seen a vision of wild, melancholy, boundless light, the sweep of the desert, and the figure of Christ is seen therein alone, with his arms lifted as in supplication or ecstacy, borne of the Spirit into the wilderness to be tempted of the devil. There are many circumstances which combine to give to this noble work a more than usually imaginative character. The symbolical use of the net, which is the cross net still used constantly in the canals of Venice, and common throughout Italy, is of the same character as that of the carpenter's tools in the Annunciation; but the introduction of the spectral figure is of bolder reach, and yet more, that vision of the after temptation which is expressly indicated as a subject of thought rather than of sight, because it is in a part of the scene, which in _fact_ must have been occupied by the trunks of the trees whose tops are seen above; and another circumstance completes the mystic character of the whole, that the flaky clouds which support the angelic hosts take on the right, where the light first falls upon them, the shape of the head of a fish, the well-known type both of the baptismal sacrament, and of Christ. Sec. 20. The Crucifixion.