Once upon a time there was a man and his wife, and they had a ring of gold. It was a lucky ring, and whoever owned it always had enough to live on. But this they did not know, and hence sold the ring for a small sum. But no sooner was the ring gone than they began to grow poorer and poorer, and at last did not know when they would get their next meal. They had a dog and a cat, and these had to go hungry as well. Then the two animals took counsel together as to how they might restore to their owners their former good fortune. At length the dog hit upon an idea