There are other cosmogonic myths besides that of the division of the giant Ymir. One is on this wise. Ere this world began, there was on one side Niflheim, the land of mist and cold, on the other side Muspelheim, the region of fire; between these two lay Ginnungagap, the north side of it frozen, the south side glowing hot, and life originated by the meeting, in one way or another, of the heat and cold. There are very primitive myths of the shaping of man out of two pieces of wood, of Night and Day as drivers of chariots and horses, of the sun and moon fleeing from wolves, and so on. A more poetic conception is the division of the world into Asgard, the garden of the Aesir; Midgard, the world of man; and Utgard, the world outside. In the first Odin has his seat Hlidskjalf; when he sits in it he can see and understand whatever is happening in any part of the broad world (is he the sun, then?). The third region is generally called Joetunheim, the home of the giants, an icy region at the extreme part of the habitable world. A bridge exists from the dwelling of men to that of the gods; it is called Bifroest, and is the rainbow. The gods have various places of meeting; but their principal seat is under a great tree, the ash. Yggdrasil[6] is a tree worthy of the gods; it is a world-tree; its roots extend to all the worlds; its branches spread even over heaven. Under it is the fountain Mimir, spring of wisdom, from which Odin drinks daily. Near it is the dwelling of the Norns, fates or weird sisters, who establish laws and uphold them by their judgments, and allot to every man his span of life. They are named Urd the past, Verdandi the present, and Skuld the future. Daily do they water the ash from the spring to keep its leaves fresh, and help it to contend with its numerous foes, for a great serpent is continually gnawing at its root, and it has also other troubles. This myth of Yggdrasil is the apotheosis of Teutonic tree-worship, and is richly suggestive.[7] [Footnote 6: Yggdrasil=Odin's horse=the gallows. Is it the cross?] [Footnote 7: Carlyle in his _Heroes_, p. 18, draws out the spiritual significance of it and of Norse mythology generally.]