Precision and horror, graphic and moral truth, were never so wonderfully combined as in the description of this hell. Yet the conception of purgatory is more original, and perhaps more poetical. The very approach to the place is enchanting. We hear of it first in the fatal adventure ascribed to Ulysses by Dante. Restless at Ithaca after his return from Troy, the hero had summoned his surviving companions for a last voyage of discovery. He had sailed with them past the Pillars of Hercules, skirting the African shore; until after three months of open sea, he saw a colossal mountain, a great truncated cone, looming before him. This was the island and hill of purgatory, at the very antipodes of Jerusalem. Yet before Ulysses could land there, a squall overtook him; and his galley sank, prow foremost, in that untraversed sea, within sight of a new world. So must the heathen fail of salvation, though some oracular impulse bring them near the goal. How easy is success, on the other hand, to the ministers of grace! From the mouth of the Tiber, where the souls of Christians congregate after death, a light skiff, piloted by an angel, and propelled only by his white wings, skims the sea swiftly towards the mountain of purgatory, there deposits the spirits it carries, and is back at the mouth of the Tiber again on the same day. So much for the approach to purgatory. When a spirit lands it finds the skirts of the mountain broad and spreading, but the slope soon becomes hard and precipitous. When he has passed the narrow gate of repentance, he must stay upon each of the ledges that encircle the mountain at various heights, until one of his sins is purged, and then upon the next ledge above, if he has been guilty also of the sin that is atoned for there. The mountain is so high as to lift its head into the sphere of the moon, above the reach of terrestrial tempests. The top, which is a broad circular plain, contains the Garden of Eden, watered by the rivers Lethe and Eunoe, one to heal all painful memories, and the other to bring all good thoughts to clearness. From this place, which literally touches the lowest heaven, the upward flight is easy from sphere to sphere. The astronomy of Dante’s day fell in beautifully with his poetic task. It described and measured a firmament that would still be identified with the posthumous heaven of the saints. The whirling invisible spheres of that astronomy had the earth for their centre. The sublime complexities of this Ptolemaic system were day and night before Dante’s mind. He loves to tell us in what constellation the sun is rising or setting, and what portion of the sky is then over the antipodes; he carries in his mind an orrery that shows him, at any given moment, the position of every star.