"What do you mean by that?" asked Frank.

"I'm not very clear in my mind as to what I did mean," laughed Ned. "However, it is plain that the steamer did not relish staying about here."

Ned watched the supper preparations for a short time and then walked away toward the interior. The island was a very small one, and consisted chiefly of a round rim of white sand—which was rock pounded up by the beating of the waves—and a rocky, cone-like elevation which lifted above the waters of the China Sea like a signal tower.

In some distant epoch the bit of rock had been cast up from the bottom of the ocean, and the rains and suns of countless years had formed from the volcanic material the thin soil which here and there supported tropical growths.

Sailors called the island "Elephant's Head," because the central elevation was said to resemble in some remote degree the head of an elephant, and because two great ridges of rock jutted out into the water, pointing toward the coast of China. These ridges formed an excellent harbor, and were known as "The Tusks."

The Manhattan was not anchored in this secure harbor, but in a bay which was formed by a break in the rock just around the south corner of the island. There were springs high up on the mountain, and these formed the river which had in turn worn away the rock and shaped the bay.

Ned reached the place where the climb began in five minutes after leaving the campfire. There was no jungle to speak of and he walked rapidly. He passed on up the steep side of the mountain for some distance and then paused on a little shelf of rock which faced the west and took out his glass.

Before him lay the quiet waters of the great China Sea, while back of him loomed the rugged bulk of the mountain, the summit indistinct in the darkness of the moonless night. The growths of the tropics came up to where he stood and then died out from lack of soil. Elephant's Head stood out boldly, its rugged lines unsoftened by the growths which flourish almost everywhere in the Philippines.

Below, Ned could see the red of the campfire, sheltered from the sea side by a screen of bushes. Away to the west he could see, at first, nothing, and then a light came dancing over the waves. At first he thought he must be mistaken, but the light remained stationery except that it seemed to rock with the slow movement of the waves.

While the boy was wondering over the matter Pat came scrambling up the side of the mountain. He threw himself on the shelf of rock by Ned's side and pointed out to the west.