They carried the pot between them. It was very heavy, and they had to put it down and rest several times. But at last they dumped it down in the dark on the front-door step of the castle, and breathed deep breaths of fatigue, relief, and excitement.
The door opened, and opened wide, and this time light streamed from within.
'Welcome!' said Sir Christopher. 'Come in. Let me help to lift it. What a beautiful tree!'
'It is rather decent, isn't it?' said Guy dispassionately.
Sir Christopher raised the pot, carried it in, and the door was shut. The children found themselves in a small square hall. A winding staircase of iron corkscrewed upwards in one corner. The hall was lighted only by two candles.
The old gentleman led the way through a door on the right into a round room with white walls.
'We're inside the tower now,' said Guy.
'Yes,' said their host, 'this is part of the tower.'
He hastily lighted a big lamp, and then a deep 'Oh!' broke from the children. For the walls were not white, they were all of mother-of-pearl, and here and there all over the walls round pearls shone with a starry, milky radiance.
