“Is one known only to ourselves.”

“But it is his true name?”

“Yes.”

“But that head is like a mask, it hides his face.”

“For that purpose it is worn.”

Percy was somewhat surprised by this.

“You do not wish his face to be seen?” he asked.

“No; he has dangerous enemies. None here know him but myself. The shield of my power falls over him, and his influence in my camp is second only to my own. Now, our meal being ended, you shall return to your friends. You have seen a portion of my force, and know my determination. Tell the surveyors and the lieutenant that I will not permit them to advance through the ravine. They must recross the river, or be annihilated. For yourself, if you choose to return, there is a mystic cavern in yonder cliff, and together we will summon the spirits that await my bidding, and seek to learn your father’s fate. Will you do so?”

“I will,” answered Percy, resolutely.

CHAPTER XII.
THE TREE-LADDER.