“Mr. McCoy,” he broke silence abruptly. “The chart indicates a group of islands, but not how many, off there to the north'ard, or nor'-nor'westward, about forty miles—the Acteon Islands. What about them?”

“There are four, all low,” McCoy answered. “First to the southeast is Matuerui—no people, no entrance to the lagoon. Then comes Tenarunga. There used to be about a dozen people there, but they may be all gone now. Anyway, there is no entrance for a ship—only a boat entrance, with a fathom of water. Vehauga and Teua-raro are the other two. No entrances, no people, very low. There is no bed for the Pyrenees in that group. She would be a total wreck.”

“Listen to that!” Captain Davenport was frantic. “No people! No entrances! What in the devil are islands good for?

“Well, then,” he barked suddenly, like an excited terrier, “the chart gives a whole mess of islands off to the nor'west. What about them? What one has an entrance where I can lay my ship?”

McCoy calmly considered. He did not refer to the chart. All these islands, reefs, shoals, lagoons, entrances, and distances were marked on the chart of his memory. He knew them as the city dweller knows his buildings, streets, and alleys.

“Papakena and Vanavana are off there to the westward, or west-nor'westward a hundred miles and a bit more,” he said. “One is uninhabited, and I heard that the people on the other had gone off to Cadmus Island. Anyway, neither lagoon has an entrance. Ahunui is another hundred miles on to the nor'west. No entrance, no people.”

“Well, forty miles beyond them are two islands?” Captain Davenport queried, raising his head from the chart.

McCoy shook his head.

“Paros and Manuhungi—no entrances, no people. Nengo-Nengo is forty miles beyond them, in turn, and it has no people and no entrance. But there is Hao Island. It is just the place. The lagoon is thirty miles long and five miles wide. There are plenty of people. You can usually find water. And any ship in the world can go through the entrance.”

He ceased and gazed solicitously at Captain Davenport, who, bending over the chart with a pair of dividers in hand, had just emitted a low groan.