An unfortunate merchant of Tripoli, Mohamed N’diff, who had suffered much on the road from an enlarged spleen, was here advised to undergo the operation of burning with a red-hot iron, the sovereign Arab remedy for almost every disorder: he consented; and, previous to our move this morning, he was laid down on his back, and, while five or six Arabs held him on the sand, the rude operators burnt him on the left side, under the ribs, in three places, nearly the size of a sixpence each. The iron was again placed in the fire, and while heating, the thumbs of about a dozen Arabs were thrust in different parts of the poor man’s side, to know if the pressure pained him, until his flesh was so bruised, that he declared all gave him pain: four more marks with the iron were now made near the former ones, upon which he was turned on his face, and three larger made within two inches of the back bone. One would have thought the operation was now at an end; but an old Arab, who had been feeling his throat for some time, declared a hot iron, and a large burn, absolutely necessary just above the collarbone, on the same side. The poor man submitted with wonderful patience to all this mangling, and after drinking a draught of water, moved on with the camels. We made this day twenty-one miles, and halted at Chukœma, which means half way. We lost more than twenty of our camels this day, by their straying out of the path. Jan. 20.—We were promised to find water early; and as the animals had not drank the night before, we pushed on with our horses: we were told the wells were near; but it was a long twenty miles, over loose rolling sand hills. At less than half way, we passed two hills of dark sandstone, called Geisgae (_Dhubba_—the hyena), which had been in sight great part of yesterday; and at 1. 30. arrived at a wadey called Dibla (_Inchat tegeel_—heavy stone). In the wadey near is a little sprinkling of rusty grass, which the animals devoured with an avidity that would have done credit to better fare. The water was extremely brackish, and strongly impregnated with trona; but it was fresh and cool, and therefore a delightful beverage to us. In the wadey Dibla stands a detached conical table-topped hill: the summit had a black rugged appearance from below, and was formed of a sort of bituminous earth, dry and crumbling to the touch. Under this were layers or strata of thin plates, almost resembling foil, of brittle schistose clay, of black, yellow, and green: these also crumbled on receiving the pressure of the hand[19]. About ten miles from Dibla we came to Chegarub, and four miles further to Kersherma, where we rested for the night. No wood or water.