The town proved to be a dreary and comfortless collection of rude stone houses, without windows or chimneys, and blackened within with smoke. The inhabitants were squalid and miserable. Three-fourths of the people were nominally Christian. The visit of the Americans of course excited great interest. We have not time to detail the various adventures which the party met with in their intercourse with the inhabitants, or to describe the singular characters which they encountered and the extraordinary scenes through which they passed. They remained one night at Kerak, and then after experiencing considerable difficulty in escaping the importunities with which they were besieged by the chieftains for presents, they succeeded in getting away and in returning safely to their boat on the shore. THE DEPRESSION OF THE SEA. Our party, after having spent about three weeks in making these and similar excursions from their various encampments, during which time they had thoroughly explored the shores on every side, and sounded the depths of the water in every part, made all the necessary measurements and observations both mathematical and meteorological, collected specimens for fully illustrating the geology and natural history of the region, and carefully noted all the physical phenomena which they had observed, found that their work was done. At least all was done which could be accomplished at the sea itself. One thing only remained to be determined, and that was the measure of the _depression_ of the sea. This could be positively and precisely ascertained only by the process of "leveling a line," as it is termed, across from the sea to the shores of the Mediterranean. This work they now prepared to undertake, making arrangements at the same time for taking their final leave of the dismal lake which they had been so long exploring. It had been long supposed that the Dead Sea lay below the general level of the waters of the earth's surface, and various modes had been adopted for ascertaining the amount of the depression. The first attempt was made by two English philosophers in 1837. The method by which they attempted to measure the depression was by means of the boiling point of water. Water requires a greater or a less amount of heat to boil it according to the degree of pressure which it sustains upon its surface from the atmosphere--boiling with less heat on the tops of mountains where the air is rare, and requiring greater in the bottoms of mines, where the density and weight of the atmosphere is increased in proportion to the depth. Heights and depths, therefore, may be approximately measured by an observation of the degree of heat indicated by the thermometer in the locality in question, when water begins to boil. By this test the English philosophers found the depression of the Dead Sea to be five hundred feet.