Thursday, July 18. Started, an hour before sunrise. Our course the same as yesterday, over a wide level valley, bounded by the same mountain range, which all along forms shallow bays with bluff extremities. Tops of the hills level. Almost the whole range, from Biar Hadje Ahmut, as free from inequality as the valley. Scattered acacias mostly in flower, and large drops of fine gum arabic hanging from the branches. Notwithstanding the strong prickles, the camels browse on this tree with great avidity and rapidity, and apparently little inconvenience. Friday, July 19. Form of hills becoming a little different; in place of the regular table tops, peaks and rugged inequalities are making their appearance. At an hour after sunset halted in Wadey Elfoo, or Valley of Cool Breezes. This was a long and fatiguing day for us. We travelled from sunrise till near eight o’clock, and advanced twenty-nine miles without halting. The mid-day heat was oppressive; but would have been doubly so, had it not been for fine cool breezes. The heat, since we left Mourzuk, has generally been moderated by a fine breeze springing up about eight or nine in the morning, and following the sun’s course. It came at times in strong puffs; and according to the state of the skin, appeared cold or hot. When perspiring, cold; when dry, hot. The idea of the want of water made us perhaps more desirous of it. The distance from the one well to the other is four days, which at this season is not small. Saturday, July 20. Tract, almost entirely destitute of vegetation, till mid-day. Our course among low hills of sandstone and claystone. Here we arrived at a beautiful small wadey, winding among the hills; the last, we are told, we come to, till we arrive at Ludinat. The hills are taking a more southerly direction. We were told they run a considerable distance in the Soudan road, take a bend to the eastward, and pass into the Tibboo country, and down to near Bornou. It is along these hills the Tuaricks make their ghrassies into the Tibboo country. These two nations are almost always at war, and reciprocally annoy each other by a predatory warfare, stealing camels, slaves, &c. killing only when resistance is made, and never making prisoners.