_March 22._ After partaking of a hearty breakfast, we proceeded, late in the morning, over an extensive gravelly plain, intersected by several Wadys or low grounds, running towards the river, and in general bearing few trees. Our road was S. by W. At the end of five hours we halted in one of the Wadys called Netyle (وادي نَتيله). The foliage of the acacia trees under which we encamped during the noon hours, is too scanty to give much shade, and the Arabs with justice compare the traveller’s endeavours to shelter himself from the burning sun under a Sant tree, to the folly of placing full confidence in the promises of the great; “Confide in his words as you do in the acacia’s shade;” has become a proverbial saying (كلامه مثل ظِلّ السَّنط). Ostriches are very numerous in this plain in several places, and we saw this morning many broken pieces of their eggs. I observed also some very large lizards, at least a foot in length from head to tail. The wind was still southerly. I again enquired, as I had often done before, whether my companions had often experienced the Semoum (which we translate by the poisonous blast of the desert, but which is nothing more than a violent south-east wind). They answered in the affirmative, but none had ever known an instance of its having proved fatal. Its worst effect is that it dries up the water in the skins, and so far it endangers the traveller’s safety. In these southern countries, however, water skins are made of very thick cow-leather, which are almost impenetrable to the Semoum. In Arabia and Egypt on the contrary the skins of sheep or goats are used for this purpose, and I witnessed the effect of a Semoum upon them, in going from Tor to Suez over land in June 1815, when in one morning a third of the contents of a full water skin was evaporated. I have repeatedly been exposed to the hot wind, in the Syrian and Arabian deserts, in Upper Egypt and Nubia. The hottest and most violent I ever experienced was at Suakin, yet even there I felt no particular inconvenience from it, although exposed to all its fury in the open plain. For my own part I am perfectly convinced that all the stories which travellers or the inhabitants of the towns of Egypt and Syria relate of the Semoum of the desert, are greatly exaggerated, and I never could hear of a single well authenticated instance of its having proved mortal either to man or beast. The fact is that the Bedouins when questioned on the subject, often frighten the townspeople with tales of men, and even of whole caravans having perished by the effects of the wind, when upon closer enquiry made by some person, whom they find not ignorant of the desert, they will state the plain truth. I never observed that the Semoum blows close to the ground, as commonly supposed, but always observed the whole atmosphere appear as if in a state of combustion; the dust and sand are carried high into the air, which assumes a reddish, or blueish,