Accordingly, when the time arrived for leaving the shores of the sea, he organized a leveling party, furnishing them with the necessary instruments and with proper instructions, and commissioned them to perform this service. They began by scaling the face of the mountain which rose almost perpendicularly from the shore of the sea at the place of the last encampment. They then proceeded slowly along, meeting with various adventures, and encountering many difficulties, but persevering steadily with the work, until at last, in twenty-three days from the time of leaving the Dead Sea, they arrived on the shore of the Mediterranean at Jaffa. The result confirmed in a very accurate manner the calculations of Lieutenant Symonds, for the difference of level was found to be a little over thirteen hundred feet--almost precisely the same as Lieutenant Symonds had determined it. The question is, therefore, now definitely settled. The vast accumulation of waters lies so far below the general level of the earth's surface that, if named after the analogy of its mighty neighbor, it might well have been called the Subterranean Sea. [Illustration: THE LEVELING PARTY.] Lieutenant Lynch had great reason to congratulate himself on this successful result of his labors; for the work which he had undertaken was one not only of toil, exposure, and suffering, but also of great danger. He was warned by the fatal results which had almost invariably attended former attempts to explore these waters, that if he ventured to trust himself upon them, it was wholly uncertain whether he would ever return. He followed in a track which had led all who had preceded him in taking it, to destruction; and the only hope of safety and success which he could entertain in renewing an experiment which had so often failed before, was in the superior sagacity and forethought which he and his party could exercise in forming their plans, and in the greater energy and courage, and the higher powers of endurance, which they could bring into play in the execution of them. The event proved that he estimated correctly the resources which he had at his command. THE STORY OF COSTIGAN. Among the stories which were related to Mr. Lynch, when he was preparing at the Sea of Galilee to commence his dangerous voyage, to discourage him from the undertaking, was that of the unfortunate Costigan. Costigan was an Irish gentleman who, some years before the period of Lieutenant Lynch's expedition, had undertaken to make a voyage on the Dead Sea, in a boat, with a single companion--a sailor whom he employed to accompany him, to row the boat, and to perform such other services as might be required. Costigan laid in a store of provisions and water, sufficient, as he judged, for the time that would be consumed in the excursion, and then taking his departure from a point on the shore near the mouth of the Jordan, he pushed out with his single oarsman over the waters of the sea. [Illustration: COSTIGAN]