At length the moon descended behind a bank of silvery clouds, piled up along the horizon. The partial obscurity that ensued, only added to the grandeur of the midnight scene, as we sat gazing silently abroad upon the confused mass of swelling waters, stretching away into the gloom. But if the scene was grand, it was also desolate; we two were perhaps the only human beings, for many hundreds of miles, who looked forth upon it. Our companions were wrapped in unconsciousness, and their deep and regular breathing attested the soundness of their slumbers. As the light failed more and more, and the shadows deepened, the sea began to assume a beautiful and striking appearance, gleaming in places with a bluish lambent light, and exhibiting, where the water was most agitated, large luminous patches. Thin waves of flame curled over our bow, and whenever a sea broke upon it, it seemed as though the boat was plunging through surges of fire. A long brilliant line, thickly strewn on each side, with little globules of the colour of burning coals, marked our wake. But the shark, which still followed close behind our keel, presented by far the most singular and striking spectacle. He seemed to be surrounded by a luminous medium; and his nose, his dorsal and side fins, and his tail, each had attached to them slender jets of phosphoric fire. Towards morning this brilliant appearance began to fade, and soon vanished altogether. By this time I found it difficult to keep my eyes open longer, and leaving Browne to finish his watch alone, I resumed my place on the ceiling planks, and in spite of the hardness of my bed, which caused every bone in my body to ache, soon slept soundly. When I again awoke, it was long after sunrise, and we were lying completely becalmed. A school of large fish were pursuing their gambols at a short distance, and Browne was rowing cautiously toward them, while Arthur and Morton stood prepared to attack them with their cutlasses as soon as we should get within striking distance. We had got almost among them, and were just beginning to congratulate ourselves upon their apparent indifference to our approach, when they all at once scattered in every direction, with manifest signs of terror. The cause of this sudden movement was not long concealed; a brace of sharks rose in their very midst; one was visible but for a moment as he rolled over to seize his prey; the other, less successful in securing a victim, shot past us, like an arrow, in pursuit of a large division of the fugitives. Soon after, both of them were seen playing around the boat. They belonged to the species known as the tiger shark, and bore no resemblance to our ghastly visitor of the preceding evening. By the consternation which their sudden appearance had produced among the lesser fishes, they had in all probability robbed us of our breakfast. Morton, with his characteristic enterprise, suggested an attack upon one of them by way