The party suffered on some occasions most intensely from heat and thirst. Their supply of water was not abundant, and one of the principal sources of solicitude which the officers of the expedition felt throughout the cruise, was to find fountains where they could replenish their stores. One night they were reduced to the greatest extreme of misery from the influence of an intolerably hot and suffocating wind, which blew upon them from off the desert to the southward. It was the Sirocco. It gave them warning of its approach on the evening before by a thin purple haze which spread over the mountains a certain unnatural and lurid hue, that awakened a mysterious emotion of awe and terror. Something dreadful seemed to be portended by it. It might be a thunder-tempest; it might be an earthquake, or it might be some strange and nameless convulsion of nature incident to the dreadful region to which they had penetrated, but elsewhere unknown. The whole party were impressed with a sentiment of solemnity and awe, and deeming it best for them to get to the land as soon as possible, they took in sail, turned their boats' heads to the westward, and rowed toward the shore. In a short time they were struck suddenly by a hot and suffocating hurricane, which blew directly against them, and, for a time, not only stopped their progress, but threatened to drive them out again to sea. The thermometer rose immediately to 105°. The oarsmen were obliged to shut their eyes to protect them from the fiery blast, and to pull, thus blinded, with all their strength to stem the waves. The men who steered the boats were unable, of course, thus to protect themselves, and their eyelids became dreadfully inflamed by the hot wind before they reached the land. At length, to their great joy, they succeeded in getting to the shore. They landed at a most desolate and gloomy spot at the mouth of a dismal ravine; and the men, drawing the boats up on the beach, immediately began to seek, in various ways, some means of escape from the dreadful influences of the blast. Several went up the ravine in search of some place of retreat, or shelter. Others finding the glare of the sun upon the rocks insupportable, while they remained on the shore, returned to the boats and crouched down under the awnings. One of the officers put spectacles upon his eyes to protect them from the lurid and burning light, but the metal of the bows became so hot, that he was obliged to remove them. Every thing metallic, in fact, such as the arms, and even the buttons on the clothes of the men, were almost burning to the touch, and the wind, instead of bringing the usual refreshing influences of a breeze, was now the vehicle of heat, and blew hot and suffocating along the beach, as if coming from the mouth of an oven.