We had been so intent upon the canoes that were speeding to cut us off that we had had no eyes for a nearer danger. When the savages on shore had discharged their spears, a good number of them leapt into the water and set off swimming after us, of which we were not aware until on a sudden we saw their black heads on the surface not many yards away. They were very fine swimmers, that is certain, for some of them had overhauled us, and were indeed almost within reach of our outrigger before we saw them. I own I got a fright then, for if they once managed to grip the outrigger, they could haul it beneath the surface and so upset our craft, and all would be over. In this extremity I called to Billy to keep them off with his spear or axe, though this meant a slackening of speed which we could ill afford in face of the canoes drawing nearer so rapidly to the gap; and besides, it gave opportunity to others of the swimmers to come up with those that had at first outstripped them. You see, then, how desperate was our situation, I having both to paddle and to steer, and Billy having to rush from end to end of the canoe to beat off the men, which would soon become an impossible business, for while he jabbed at the men aiming at the stern cross-piece, another made a dash for the bow-end, and there were others ready to clutch at the beam. I was pretty nearly mad with despair when, as we came out of the shelter of the trees lining the land side of the lagoon, I felt the breeze blow stronger against my cheek and a flush of hope within me. Crying to Billy to keep up for a minute longer, to which he answered, "Trust me, master," in a breathless kind of way, I dropped my paddle, caught at the halyard, and ran the sail up the mast. Instantly it filled and took the wind, but in the moment when the vessel came to a stop at my ceasing to paddle, two of the swimmers laid hands on the beam of the outrigger, and I felt the vessel give a dreadful lurch. My heart was in my mouth, as we say; but Billy, with a desperate stroke of his spear, drove one of the men away, and the next moment the sudden filling of the sail caused the vessel to plunge forward, so that the man who still clung to the outrigger was drawn along and prevented from exerting his strength to upset us. And while he still hung on Billy reached over, and brought his axe down with great force on the man's head, almost losing his balance; and the man gave a yell and let go his hold, falling back among his companions, who had now abandoned the pursuit. [Illustration: "BILLY REACHED OVER, AND BROUGHT HIS AXE DOWN ON THE MAN'S HEAD."]