[1] This point is the centre of the universe; when Virgil had turned upon the haunch of Lucifer, the passage had been made from one hemisphere of the earth—the inhabited and known hemisphere— to the other where no living men dwell, and where the only land is the mountain of Purgatory. In changing one hemisphere for the other there is a change of time of twelve hours. A second Saturday morning begins for the poets, and they pass nearly as long a time as they have been in Hell, that is, twenty-four hours, in traversing the long and hard way that leads through the new hemisphere on which they have just entered. “Rise up,” said the Master, “on thy feet; the way is long and the road is difficult, and already the sun unto mid-tierce[1] returns.” [2] Tierce is the church office sung at the third hour of the day, and the name is given to the first three hours after sunrise. Midtierce consequently here means about half-past seven o’clock. In Hell Dante never mentions the sun to mark division of time, but now, having issued from Hell, Virgil marks the hour by a reference to the sun. It was no hallway of a palace where we were, but a natural dungeon that had a bad floor, and lack of light. “Before I tear me from the abyss,” said I when I had risen up, “my Master, speak a little to me to draw me out of error. Where is the ice? and this one, how is he fixed thus upside down? and how in such short while has the sun from eve to morn made transit?” And he to me, “Thou imaginest that thou still art on the other side of the centre where I laid hold on the hair of the guilty Worm that pierces the world. On that side wast thou so long as I descended; when I turned thou didst pass the point to which from all parts whatever has weight is drawn; and thou art now arrived beneath the hemisphere opposite to that which the great dry land covers, and beneath whose zenith the Man was slain who was born and lived without sin. Thou hast thy feet upon the little sphere which forms the other face of the Judecca. Here it is morning when there it is evening; and he who made for us a stairway with his hair is still fixed even as he was before. Upon this side he fell down from heaven, and the earth, which before was spread out here, through fear of him made of the sea a veil, and came to your hemisphere; and perchance to flee from him that land[1] which on this side appears left here this empty space and upward ran back.” [1] The Mount of Purgatory.