has probably been very slow, and dates back from its earliest condition, when its waters stretched for a distance of about 200 miles from north to south. . . .
"The excessive salinity of the waters of the Dead Sea will be recognised from a comparison with those of the Atlantic Ocean. Thus, while the waters of the ocean give six pounds of salt, &c., in a hundred pounds of water, those of the Dead Sea give 24·57 pounds in the same quantity; but in both cases the degree of salinity varies with the depth, the waters at the surface being less saline than those near the bottom. . . .
"As to the depth of the waters:—The floor of the Dead Sea has been sounded on two occasions: first, by the Expedition under Lieutenant Lynch in 1848, and secondly, by that under the Duc de Luynes. In the former case the maximum depth was found to be 1278 feet; in the latter 1217 feet, being close approximations to each other. We may therefore affirm that the floor of the lake descends to nearly as great a depth below its surface as the surface itself below the level of the Mediterranean Sea.
"The section given by Lynch indicates that the place of greatest depth lies much nearer the Moabite than the Judæan shore, and the descent from the base of the Moabite escarpment below Jebel Attarus and between the outlets of the Wâdies Mojeb and Zerka Maïn, is very steep indeed. The deepest part of the trough seems to lie in a direction running north and south, at a distance of about 2 miles from the eastern bank; and while the ascent towards this bank is rapid, that towards the Judæan shore on the west is comparatively gentle. The line of this deep trough seems exactly to coincide with that of the great Jordan Valley fault. From the bottom of the deeper part, the sounding line brought up specimens of crystals of salt (sodium-chloride), and it can scarcely be doubted that a bed of this mineral, together with gypsum, is in
