“This,” said Enderby, by way of introduction, “is Billy Stenson, the skipper’s son. He haven’t no mother, pore little chap, so he’ve been comin’ to sea with his father the last two or three years, haven’t you, Billy?”

“Yes, that’s quite right, bosun,” answered the boy.

“Well, now, this gentleman, Mr—er—dashed if I can remember your name, mister!” proceeded Enderby.

“Blackburn,” I prompted.

“Thank ’e, sir. Blackburn. Well, Billy,” continued the boatswain, “this here Mr Blackburn is a first-class navigator, havin’ been an orficer aboard a liner, and he’ll be able to take us to Barber’s treasure island, if anybody can. But, of course, he’ll have to know whereabouts it is afore he can navigate the ship to it; and now that your pore father’s—um—no longer aboard, I reckon that you’re the only one who can say what’s the latitood and longitood of it.”

“But that’s just what I can’t do, bosun,” answered Billy. “I know what the latitude of it is, but the longitude’s another matter. Mr Barber didn’t know it; Father didn’t know it; and I don’t know it.”

“What!” I exclaimed. “Do you mean to tell me that your father actually started out with the deliberate intention of looking for an island the latitude only of which he knew?”

“Yes, sir,” answered the boy, “that’s right. Let me tell you how it all happened. I know, because Father told me the story lots of times; and besides, I’ve heard him and Mr Barber talking about it so often that I’m not likely to forget a word of it. This is how it was:—

“Before Mr Barber met Father, this last time, he was mate of a Dutch ship trading out of Batavia, collecting sandalwood and shell. They called at a place named—named—Waing— Do you mind, sir, if I get the chart and show you the place on it? Somehow, I never can exactly remember the names of these places, but I can point ’em out on the chart, because I’ve listened and watched while Father and Mr Barber talked it over together.”

“Yes,” I said, “by all means get the chart, my boy. I shall be able to understand your story ever so much better with that before me.” Whereupon the lad entered a state-room at the fore end of the main cabin, and presently returned with a chart of the Malay Archipelago, which he spread open on the table.