The white passage was so narrow that the children had to walk along it one behind another in Indian file.  The floor was no longer soft and yielding but firm and hard under their feet, and by stretching out their hands they could almost touch the smooth white walls on either side of them.  At first the way was perfectly straight ahead, but after they had walked what seemed to them a long, long time, the passage curved sharply and widened a little.  The children noticed, much to their relief, that it was growing lighter around them.

“I’m getting tired,” Ann announced at last.  “See, Ruddy, there is a nice flat black rock.  Let’s sit down and rest on it.”

There was room for them all on the large flat rock, and when they were settled on it, Peter remarked:  “I’m hungry!” Now this was a thing Peter was used to saying at all times and on all occasions, so it was just like him to bring it out now as cheerfully and confidently as if Betsy had been at his elbow with a plate of bread and butter.

“Oh, dear,” Ann exclaimed, “what a long, long while it seems since we had our tea!  I suppose it will soon be time to think about starving.”  And she took her little handkerchief out of the pocket of her nighty and began to wipe her eyes with it.

“Not yet,” said Rudolf hastily.  “I put some candy into my pajamas pocket when I went to bed, because the time I like to eat it best is just before breakfast—­if people only wouldn’t row so about my doing it.  Let me see—­it was two chocolate mice I had—­I hope they didn’t get squashed when we were playing!  No, here they are.”  The chocolate mice were a little the worse for wear, in fact there were white streaks on them where the chocolate had rubbed off on the inside of Rudolf’s pocket, but the children didn’t mind that.  They thought they had never seen anything that looked more delicious.

“I will cut them in three pieces with my sword,” said Rudolf.  “You may have the heads, Ann, and me the middle parts, and Peter the tails because he is the youngest.”

This arrangement did not suit Peter.  “I will not eat the tails,” he screamed, kicking his heels angrily against the rock,—­“the tails is made out of nassy old string!” And, I am sorry to say, Peter made a snatch at both chocolate mice and knocked them out of Rudolf’s hand.  This, of course, made it necessary for Rudolf to box Peter’s ears, and a tussle quickly followed, in the middle of which something dreadful happened.  The large flat rock they were sitting on gave several queer shakes and heaves and then suddenly rose right up under the three children and threw them head over heels into the air.  They were not a bit hurt, but they were very, very much surprised when they scrambled to their feet and saw the rock erect on a long kind of tail it had, glaring at them out of one red angry eye.

Ann was the first to recognize it.  “Oh, oh,” she cried, “it’s not a rock at all—­it’s Betsy’s Warming-pan!”