But mythology and supersitions[TN-15] add more decisive testimony. One of the Aztec legends of the origin of man was, that after one of the destructions of the world the gods took counsel together how to renew the species. It was decided that one of their number, Xolotl, should descend to Mictlan, the realm of the dead, and bring thence a bone of the perished race. The fragments of this they sprinkled with blood, and on the fourth day it grew into a youth, the father of the present race.[258-1] The profound mystical significance of this legend is reflected in one told by the Quichés, in which the hero gods Hunahpu and Xblanque succumb to the rulers of Xibalba, the darksome powers of death. Their bodies are burned, but their bones are ground in a mill and thrown in the waters, lest they should come to life. Even this precaution is insufficient--"for these ashes did not go far; they sank to the bottom of the stream, where, in the twinkling of an eye, they were changed into handsome youths, and their very same features appeared anew. On the fifth day they displayed themselves anew, and were seen in the water by the people,"[258-2] whence they emerged to overcome and destroy the powers of death and hell (Xibalba). The strongest analogies to these myths are offered by the superstitious rites of distant tribes. Some of the Tupis of Brazil were wont on the death of a relative to dry and pulverize his bones and then mix them with their food, a nauseous practice they defended by asserting that the soul of the dead remained in the bones and lived again in the living.[259-1] Even the lower animals were supposed to follow the same law. Hardly any of the hunting tribes, before their original manners were vitiated by foreign influence, permitted the bones of game slain in the chase to be broken, or left carelessly about the encampment. They were collected in heaps, or thrown into the water. Mrs. Eastman observes that even yet the Dakotas deem it an omen of ill luck in the hunt, if the dogs gnaw the bones or a woman inadvertently steps over them; and the Chipeway interpreter, John Tanner, speaks of the same fear among that tribe. The Yurucares of Bolivia carried it to such an inconvenient extent, that they carefully put by even small fish bones, saying that unless this was done the fish and game would disappear from the country.[259-2] The traveller on our western prairies often notices the buffalo skulls, countless numbers of which bleach on those vast plains, arranged in circles and symmetrical piles by the careful hands of the native hunters. The explanation they offer for this custom gives the key to the whole theory and practice of preserving the osseous relics of the dead, as well human as brute. They say that, "the bones contain the spirits of the slain animals, and that some time in the future they will rise from the earth, re-clothe themselves with flesh, and stock the prairies anew."[259-3] This explanation, which comes to us from