_March 2d._ I departed from Derr with an old Arab, named Mohammed Abou Saad (محمّد ابو سَعد), one of the Bedouins called Kerrarish (قراريش). These Bedouins, a remote branch of the Ababde, pasture their cattle on the uninhabited banks of the river, and on its islands, from Derr southward, as far as Mahass and Dongola, where they are said to be more numerous than in Nubia. They are poor; their tents are formed of mats made of the leaves of palm-trees, with a partition in the middle to separate the women’s apartment; but, notwithstanding their poverty, they refuse to give their daughters in marriage to the Nubians, and have thus preserved their race pure. They pride themselves, and justly, in the beauty of their girls. The Kerrarish are, for the most part, in the service of the governors of Nubia, to whom they are attached as a corps of guards, and guides, and accompany them in their journies through their dominions. Whilst the father and grown up sons are absent, the mother and daughters remain in their solitary tent; for they generally live in separate families, and not in encampments. These Bedouins receive occasional presents from the chiefs of Nubia, and such of them as cultivate the islands in the river are exempted from taxes. They are a very honest and hospitable people, and more kind in their dispositions, than any of the inhabitants of Nubia whom I met with. Those who are not in the employ of the governors, gain their livelihood either by acting as guides, or in collecting the senna in the eastern mountain, which they sell to the merchants of Esne at about £1. per camel’s load (from four to five hundred weight). Numbers of them also travel from Wady Halfa, on the Nile, three days journies into the western desert, and collect there the Shabb, (شبّ) or nitre, which they exchange with the same merchants for Dhourra; giving two measures of the former for three equal measures of the latter. The nitre is found on digging only a few inches deep, and covers a space of several miles in extent. This is, however, a perilous traffic, as the inhabitants of Kubbanýe, a village about twelve miles north of Assouan, also engage in it; these are eleven days in reaching the nitre pits, and whenever the two parties meet, a bloody conflict ensues. Between Wady Halfa and the Shabb, one day’s distance from the latter, is a spring where is some verdure, and where a few Doum trees grow North of the Shabb, one day, in the direction of the great Oasis, is a similar spring, called Nary (ناري), with many date trees growing round it.