"It must have been they I heard passing the door late in the afternoon," I said.

"It is strange they have not searched this room."

"They think you went in another direction," she explained. "They are searching another part of the castle."

"But eventually they will come here?" I asked.

"Yes," she said; "eventually they will search every room in the castle, but that will take a long time."

"You have done well, Ulah," I said. "I am sorry that I can offer you nothing more in return than my thanks."

"I shall be glad to do even more," she said; "there is nothing that I would not do to help you and the jeddara."

"There is nothing more that you can do," I told her; "and now you had better go, before they find you here with me."

"You are sure that there is nothing more I can do?" she asked.

"No, nothing, Ulah," and I opened the door, and she went out.

"Good-bye, and good luck, John Carter," she whispered, as I closed the door behind her.

I went at once to the window, after rebolting the door. It was very dark outside. I had wanted to wait until after midnight and until the castle was asleep before I attempted to put into practice the plan I contemplated for the rescue of Ozara, but the knowledge that they were searching the castle for me forced me to put aside every consideration except haste.

I fastened one end of the rope securely to the hook that Ulah had brought me.

Then I sat on the window sill and leaned far out.

I took one end of the rope in my left hand where I grasped the frame of the window, and held the hook in my right hand, permitting the slack of the rope to fall free beneath me against the side of the tower outside the window.

I gauged the distance upward to the sill of the window above. It seemed too far for me to hope to make a successful cast from the position in which I was sitting, and so I arose and stood on the sill of the window. This brought me a few feet nearer my goal and also gave me a little more freedom of action.

I was very anxious to be successful at the first cast; for I feared that if I missed, the rattling of the metal hook against the side of the tower might attract attention.

I stood there several minutes gauging the distance and going through all the motions of throwing the hook except actually releasing it.

When I felt that I had the timing and the distance as accurately gauged as it was possible to do in this manner, I swung the hook upward and released it.

I could see the sill above me, because a faint light was coming from the room beyond it. I saw the hook swing into this light; I heard it strike the sill with a metallic ring; then I pulled down upon the rope.