When we resumed our march we found our work more difficult than before, the sand-hills assuming a steepness most trying for the camels, particularly at the brink of the slopes. We were several times obliged to flatten away the edges with our hands, in order to facilitate the camel’s ascent. I went generally a little in front, conducted by Mohammed ben Sbaeda, one of our camel-drivers, who, from the moment we had entered Fezzán, had exchanged the quarrelsome character by which he had made himself disagreeable to us, for very obliging and pleasing manners, and was anxious to give me every information. He told me that this belt of sand extended in a south-west and north-east direction from Dwésa as far as Fukka, a place, according to him, five days’ march on this side of Sókna. He added, that however high and steep we might think these sand-hills, they were nothing in comparison with those in the direction of the natron-lakes; but, in making this remark, I think he wanted to excuse himself and his companions for taking us this long way round by the west. He knew that it was our desire to visit the natron- lakes, and that our direct way to Murzuk led by those lakes, while their object was to take us to their native village Ugréfe. Mohammed stated that each district in Fezzán has its own peculiar dialect; and he contended that, while the inhabitants of Wadi Sháti speak a good sort of Arabic, similar to that spoken in Mizda, the people of the great wadi (Wadi el Gharbi) make use of a corrupt dialect. Meanwhile the caravan remained very far behind, and we thought it prudent to wait for them in Wadi Tawíl, particularly as the path divided here. It was so hot that my camel, when I let it loose to browse a little, would not touch anything. When the other camel-drivers at length came up, there was a dispute as to the path to be followed; but the truth was, that while there could be no doubt about the direct road to Murzuk, some of the camel-drivers wished to take us to Ubári. But at length the other party, interested only in carrying us westward as far as Ugréfe, which was a great deal out of our route, got the upper hand, and we left the road to Ubári, which passes only two wadis, or hollows, called Tekúr and Uglah, both with bad water, to the west, and followed the road to Ugréfe.