The information which the Christian world obtained in respect to the Dead Sea and the character of the country around it, was, after all, down to quite a late period, of a very vague and unsatisfactory character, being derived almost entirely from the reports of occasional travelers who approached the shores of it, from time to time, at certain points more accessible than others, but who remained at their places of observation for so brief a period, and were so restricted in respect to their means and facilities for properly examining the localities that they visited, that, notwithstanding all their efforts, the geography and natural history of the region were very imperfectly determined. Things continued in this state until the year 1847, when Lieutenant Lynch, of the United States naval service, made his celebrated expedition into the Holy Land, for the express purpose of exploring the River Jordan and the Dead Sea. We have already, in our article on the River Jordan, given an account of the landing of this party at the Bay of Acre, of their extraordinary journey across the country to the Sea of Galilee, and of their passage down the Jordan in the metallic boats, the Fanny Mason and the Fanny Skinner, which they had brought with them across to the Mediterranean. We now propose to narrate briefly the adventures which the intrepid explorer met with in his cruise around the Dead Sea. When he commenced the undertaking, it was considered both by himself and his companions, and also by his countrymen and friends at home, to be extremely doubtful whether he would be able to accomplish it. All previous attempts to navigate the sea had failed, and had proved fatal to their projectors. Some had been destroyed by the natives--others had sunk under the pestiferous effects of the climate. When, therefore, the boats of this party, heavily laden with their stores of provisions and their crews, came from the mouth of the Jordan out into the open sea, the hearts of the adventurous navigators were filled with many forebodings. A GALE.