The Professor laughed a jolly laugh. "Oh, he's quite tame!" he said. "He never bites. He's only a little——a little dreamy, you know." He took hold of Bruno's other hand, and led the children down a long passage I had never noticed before——not that there was anything remarkable in that: I was constantly coming on new rooms and passages in that mysterious Palace, and very seldom succeeded in finding the old ones again.
Near the end of the passage the Professor stopped. "This is his room," he said, pointing to the solid wall.
"We ca'n't get in through there!" Bruno exclaimed.
Sylvie said nothing, till she had carefully examined whether the wall opened anywhere. Then she laughed merrily. "You're playing us a trick, you dear old thing!" she said. "There's no door here!"
"There isn't any door to the room," said the Professor. "We shall have to climb in at the window."
So we went into the garden, and soon found the window of the Other Professor's
