"Pull hard—he's after us!" shouted my uncle, standing in the stern with a twelve foot oar in his hand.

We were making for the shallows over a large coral mushroom, a hundred yards away, and the men were rowing at top speed, for they realized that our light cranky boat gave little protection against such an enemy. The shark drew rapidly abreast of us and as his head ranged alongside Uncle Harry raised the oar and thrust down with all his strength. The blow was a glancing one, and before he recovered his weapon the three-inch shaft of tough wood was between a pair of formidable jaws. My uncle's eyebrows went up as he raised what was left of the oar, sheared off as a child bites through a stick of candy. Next moment Ivi cried out, as the monster seized his sweep and wrenched it from his hands. I saw it float to the surface with a splintered blade—felt our boat shaken violently as the shark took the keel in his teeth. Then the bow grated on coral, and we leaped out in the shallows to pull the boat into the safety of a foot of water.

After a time the ominous fin tacked away toward the reef and disappeared. We were not anxious for another encounter and allowed our enemy plenty of time to go. The men were talking excitedly in high-pitched voices, when my uncle lit one of his long cigars and turned to me.

"What a brute!" he remarked. "I thought he had me that last time! By Jove! When Fatu took hold of me I could fairly feel those teeth sinking into my legs! Well, our work is cut out for us—there'll be no diving till that fellow is dead. The men are saying that in all probability there are no other dangerous sharks in the lagoon. Do you remember the letter I read you that evening at home? This is the same shark, without a doubt,—he may have been here for a hundred years. He's of a rare kind, by good luck; so rare that I know only his Latin name: Carcharodon. They are relics of prehistoric times and seem to be nearly extinct to-day, though a few of them still linger in the warm waters close to the Line. Remember the big fossil teeth, from Florida, on the mantel at the ranch? They came from one of this fellow's ancestors who grew to be ninety feet long and swarmed in the Tertiary seas."

"But won't he die?" I asked. "I saw you stab him three times."

My uncle laughed. "No more than you will," he replied. "A shark of that size takes a lot of killing. But he's going to die to-morrow, if we have to sit up all night hammering out a lance and a harpoon. Our fish-spears would only tickle his ribs. Come, he seems to have given us up—let's be getting back to the Tara."

VI
THE END OF THE SHARK AND
THE BEGINNING OF THE DIVING

That Sunday night, while the crew of the Tara told to their friends the story of Ofai's rescue, my uncle and I labored with forge and anvil and grindstone under the shed of corrugated iron. From the schooner's trade-room we took a couple of the whale-spades used throughout the islands as agricultural tools, and removed the wooden hafts from their sockets. While I pumped the bellows, Uncle Harry heated one of these in the forge and hammered it into the shape of a harpoon, welding on a piece of steel to make the socket into which the hinged barb would fit. Then, gripping a morsel of steel in the tongs, he forged out the barb, punched a hole through it, and riveted it in place, so that it folded into its socket when the harpoon was thrown and opened to prevent the iron's withdrawal from the wound. When the harpoon was finished to his satisfaction, I turned the grindstone while he ground it to a razor-edge. After that he heated the other spade and forged out a lance for killing: a slender, double-edged blade, two inches wide and eighteen long—a murderous weapon in skilled hands. We fixed the lance on a twelve-foot pole of hibiscus, and whittled out a short stout shaft for the harpoon, tapered to fit loosely in the socket. Then my uncle fetched from the storeroom a coil of heavy cotton line. Passing one end of it through a screw eye halfway up the shaft of the harpoon he lashed it firmly to the small of the iron. It was long past midnight.

"We won't get much sleep," he remarked, as we paddled out to the schooner in a canoe. "We must kill that shark to-morrow—to-day, rather—without fail! The natives are superstitious as children; they used to worship sharks, you know, before the missionaries came, and if any ghost-talk starts, we may have to go back for another lot of men. I'll wake you at five o'clock."