“I could never even climb trees,” whispered Myra.

“You must climb a cliff to-night. It is our only chance.”

He hacked on, rapidly.

Suddenly he paused. “Show me your reach,” he said. “Mine would not do. Put your left hand there; so. Now stretch up with your right; as high as you can, easily.... Ah! three foot six, or thereabouts. Now your left foot close to the bottom. Step up with your right, as high as you can comfortably.... Two foot, nine. Good! One step, more or less, might make all the difference, by-and-by. Now listen, while I work. What a God-send for us that there happens to be, just here, this stratum of soft sand. We should have been done for, had the cliff been serpentine marble. You must choose between two plans. I could scrape you a step, wider than the rest—almost a ledge—just out of reach of the water, leaving you there, while I go on up, and finish. Then I could return for you. You could climb in front, I helping from below. You would feel safer. Or—you must follow me up now, step by step, as I cut them.”

“I could not wait on a ledge alone,” said Myra. “I will follow you, step by step.”

“Good,” said Jim Airth; “it will save time. I am afraid you must take off your shoes and stockings. Nothing will do for this work, but naked feet. We shall need to stick our toes into the sand, and make them cling on like fingers.”

He pulled off his own boots and stockings; then drew the belt from his Norfolk jacket, and fastened it firmly round his left ankle in such a way that a long end would hang down behind him as he mounted.

“See that?” he said. “When you are in the niches below me, it will hang close to your hands. If you are slipping, and feel you must clutch at something, catch hold of that. Only, if possible, shout first, and I will stick on like a limpet, and try to withstand the strain. But don’t do it, unless really necessary.”

He picked up Myra’s shoes and stockings, and put them into his big pockets.

At that moment an advance wave rushed up the sand and caught their bare feet.