Just then Captain Restronguet’s voice was heard at the telephone inquiring if Mr. Hythe were in the conning-tower. "He is, sir," replied Kenwyn. "Ask him to step this way. The watertight doors are now open." "Have you noticed the sudden rise of temperature, Mr. Hythe?" asked the captain when the sub reached the fore conning-tower. "You have? I thought you would. We’ve had a most unusual experience; we have passed almost over the mouth of a submarine volcano at the moment of an eruption. The ’Aphrodite’ was almost drawn into the vortex caused by the rush of water to fill the cavity formed by the expelled lava from the crater." "I wonder if another island has been created, sir?" "If there has been the ’Aphrodite’ has narrowly escaped being left high and dry upon it, Mr. Hythe. It was in the last century that an island suddenly appeared almost in this latitude and longitude. The British, I believe, claimed it and so did the Italians; but before the question of ownership was decided the island settled the matter by disappearing. If----" "Look ahead, sir!" exclaimed the quartermaster in horrified tones. The water was now slightly less smoke-laden, and the two for’ard search-lights made a tolerable clear path for nearly a hundred yards ahead. Into that double ray of light came the hull of a sinking vessel. It was sinking stern foremost with a slight list to starboard. Hythe recognized the type of craft, a Sicilian fishing-boat. Her mast had snapped off about three feet above the deck, while her lateen sail, extended by the upward tendency of the wooden yard was almost as rigid as a sheet of metal. Lashed to the tiller was the helmsman--a dark-skinned, curly-haired Italian. The sub could even distinguish his gold ear-rings. The poor fellow was still struggling desperately yet aimlessly, for he made no effort to cast off the rope that bound him to his post of duty. His hands clutched wildly at the yielding water. Amidships were two other men, similarly secured, but they were evidently already drowned since they were making no attempt to save themselves. But for a brief instant did the distressing vision last, for with a quick movement the quartermaster placed the helm hard over, the "Aphrodite" swerved, and the parallel beams shone upon a waste of unbroken water. Captain Restronguet muttered something under his breath. "Can nothing be done to save them?" asked Hythe. The captain shook his head. "Nothing," he replied deliberately. "Nothing. Had there been a ghost of a chance we would have taken the risk." For several moments the occupants of the conning-tower stood in silence, gazing fixedly at the chaos of water before their eyes. By this time the "Aphrodite" had passed the influence of the eruption, for she no longer rolled and plunged on her submarine course.