CHAPTER XXI.
THROUGH THE IVORY DOOR.
"I don't know," said Sylvie. " Hush! I must think. I could go to him, by myself, well enough. But I want you to come too."
"Let me go with you," I pleaded. "I can walk as fast as you can, I'm sure."
Sylvie laughed merrily. "What nonsense!" she cried. "Why, you ca'n't walk a bit! You're lying quite flat on your back! You don't understand these things."
"I can walk as well as you can," I repeated. And I tried my best to walk a few steps: but the ground slipped away backwards, quite as
