of miles, until he came to the swamp where dwelt the Primal Mist. There he met an old man with yellow eyebrows and asked him how old he might be. The old man said: "I have given up the habit of eating, and live on air. The pupils of my eyes have gradually acquired a green glow, which enables me to see all hidden things. Whenever a thousand years have passed I turn around my bones and wash the marrow. And every two thousand years I scrape my skin to get rid of the hair. I have already washed my bones thrice and scraped my skin five times."
Afterward Sky O'Dawn served the Emperor Wu of the Han dynasty. The Emperor, who was fond of the magic arts, was much attached to him. One day he said to him: "I wish that the empress might not grow old. Can you prevent it?"
Sky O'Dawn answered: "I know of only one means to keep from growing old."
The Emperor asked what herbs one had to eat. Sky O'Dawn replied: "In the North-East grow the mushrooms of life. There is a three-legged crow in the sun who always wants to get down and eat them. But the Sun-God holds his eyes shut and does not let him get away. If human beings eat them they become immortal, when animals eat them they grow stupified."
"And how do you know this?" asked the Emperor.
"When I was a boy I once fell into a deep well, from which I could not get out for many decades. And down there was an immortal who led me to this herb. But one has to pass through a red river whose water is so light that not even a feather can swim on it. Everything that touches its surface sinks to the depths. But the man pulled off one of his shoes and gave it to me. And I crossed the water on the shoe, picked the herb and ate it. Those who dwell in that place weave mats
