At that moment my eyes fell upon the main-boom, and I missed the life-buoy which we kept suspended from it in readiness for any sudden emergency. Bob then had gone overboard, taking the life-buoy with him, and that too upon an impulse so sudden that there had been no time or opportunity to arouse me.

The Lily was indeed hove-to, as I had observed when I first awoke; but it was with both jib and fore-sheet to windward. The probability was then that, on Bob quitting the helm, she had flown up into the wind until her head sails were taken aback, when she would, of course, or most probably, pay off on the opposite tack, and remain hove-to. This must necessarily have happened at least four hours ago (it was now eight o’clock), because, had Bob been on deck at eight bells, he would, of course, have called me. And during all this time the boat had been sailing away from him, not very rapidly it is true, being hove-to, but probably at a rate of at least three knots an hour. What might not have happened to the poor fellow in that time? He was a splendid swimmer, I knew, having acquired the art on our last voyage, and well able to take care of himself in the water; and there was very little sea on. Besides, I felt pretty certain he had the life-buoy; and, with its assistance, I knew he could keep himself afloat in such weather until worn out with exhaustion from want of food. But there were other perils than that of drowning; and, if attacked by a shark, what chance had he?

These thoughts flashed through my mind whilst busily employed in taking the necessary steps to return in search of him, for I had no idea of continuing the voyage without making such a search; indeed, it would have been impossible. And my chances of success were not so meagre as might at first sight be supposed.

In the first place, knowing how difficult it would be to see such an object as a life-buoy, even with a man in it, at any great distance, from so low an elevation as our deck, I had taken the precaution to have each buoy fitted with a contrivance for hoisting a signal.

This consisted of a small bundle of jointed rods, which could be put together like a fishing-rod, and on the topmost of these was a white flag two feet square. On the buoy itself was firmly lashed a step similar to the “bucket” (I believe it is called) in which a carriage-whip is placed when not in use by the driver. The rods, taken to pieces, were securely lashed in a compact bundle to the buoy, and the bucket was a fixture. Thus, if Bob had the life-buoy, he also had the means of indicating his whereabouts, and that, too, at a considerable distance. And I knew pretty nearly in what direction I ought to steer, in order to take the most effectual means of finding him.

Whilst hove-to, the Lily’s course or drift was, on the whole, as nearly as possible at right angles to the direction of the wind. It only remained then to turn her round and keep the wind directly abeam, and I should be going back pretty nearly over the same ground I had been traversing since Bob went overboard.

Accordingly, I lost no time in getting the Lily round, when I once more hove her to, and went aloft to the cross-trees with my glass to see if the white flag were visible.

A long and anxious scrutiny followed, but without any discovery. I did not feel any very great disappointment at this, for I thought it very probable I was too far away to discover so small an object, even with the aid of my glass.

Once satisfied that it was nowhere to be seen, I quickly descended to the deck, trimmed the sheets flowing, and away the little craft bounded over the bright flashing sea.

I stood on for an hour exactly, when I once more hauled the fore-sheet to windward, and went aloft with my glass again.