One of those furious and sudden storms, which frequently sweep over the plains of Mesopotamia during the spring season, burst over us in the night. Whilst incessant lightnings broke the gloom, a raging wind almost drowned the deep roll of the thunder. The united strength of the Arabs could scarcely hold the flapping canvass of the tents. Rain descended in torrents, sparing us no place of shelter. Towards dawn the hurricane had passed away, leaving a still and cloudless sky. When the round clear sun rose from the broad expanse of the desert, a delightful calm and freshness pervaded the air, producing mingled sensations of pleasure and repose. The vegetation was far more forward in that part of the desert traversed during the day's journey than in the plain of Zerga. We trod on a carpet of the brightest verdure, mingled with gaudy flowers. On all sides of us rose lofty Assyrian mounds, now covered with soft herbage. These, seen from a great distance, and the best of landmarks in a vast plain, guide the Bedouin in his yearly wanderings.[108] Tel Ermah, "the mound of the spears," had been visible from our tents, rising far above the surrounding ruins. As it was a little out of the direct line of march, Suttum mounted one of our led horses, and leaving Khoraif to protect the caravan, rode with me to the spot. The mound is precisely similar in character to Abou Khameera and Mokhamour, and, like them, stands within a quadrangle of earthen walls. I was unable to find any inscribed fragments of stone or brick. Whilst I was examining the ruins, Suttum, from the highest mound, had been scanning the plain with his eagle eye. At length it rested upon a distant moving object. Although with a telescope I could scarcely distinguish that to which he pointed, the Sheikh saw that it was a rider on a dromedary. He now, therefore, began to watch the stranger with that eager curiosity and suspicion always shown by a Bedouin, when the solitude of the desert is broken by a human being of whose condition and business he is ignorant. Suttum soon satisfied himself as to the character of the solitary wanderer. He declared him to be a messenger from his own tribe, who had been sent to lead us to his father's tents. Mounting his horse, he galloped towards him. The Arab soon perceived the approaching horseman, and then commenced on both sides a series of manoeuvres practised by those who meet in the desert, and are as yet distrustful of each other. I marked them from the ruin as they cautiously approached, now halting, now drawing nigh, and then pretending to ride away in an opposite direction. At length, recognising one another, they met, and, having first dismounted to embrace, came together towards us. As Suttum had conjectured, a messenger had been sent to him from his father's tribe, to say that their tents would be pitched in three or four days beneath the Sinjar hill.