"The fourth sister was not so daring. She stayed out in the lonely sea...

...and told them that that was the most beautiful of all. You could see many many miles all round, and the sky arched over you like a great bell of glass. Ships she had seen, but far away they looked like gulls. The merry dolphins had turned somersaults, and the big whales had squirted up water out of their nostrils, so that it looked like hundreds of fountains all around her."