Gradually the whole vault of sky assumed a coppery aspect, and the sun shone paler and paler each moment. The heat and oppressiveness were almost unbearable; not a breath of air relieved the suffocating atmosphere. The sun finally disappeared behind the curtain of lowering cloud, and a darkness began to creep over the earth. The Arabs prepared for the storm which they knew from experience was brewing. The dreaded sandstorm was approaching. It came on the wings of the southern gale with terrific speed, and suddenly the air became almost as dark as midnight, full of fine blinding sand. We could not see twenty paces ahead; and now the sluggish atmosphere was stirred with the rushing and shrieking of a mighty wind. As I gazed for one brief moment upwards during a lull in the storm, my eyes were almost blinded by a brilliant light, brighter than the flame from an incandescent lamp, and a thousand times as large, which seemed to shoot from out of space. At the same awful moment the very dome of heaven seemed cracked asunder by a loud report, different from anything I had ever heard before. It was a solid and metallic sound, louder and sharper than the report of tons of exploding nitro-glycerine. The earth shook and trembled to its utmost foundations, and the rocks seemed to recoil at the frightful explosion. The Arabs were struck dumb and motionless with horror, and I, for several moments, was as one stone-blind. With the report a huge body seemed to have struck the rocks a short distance from us, but it was impossible to tell what it was until the fury of the storm was somewhat spent. The worst was now over; and the sand, the thunder, and the darkness vanished almost as suddenly as they came. But we did not venture forth until the welcome, glorious sun shone down again upon the wet rocks; and then the Arabs engaged in fervent prayer to Allah for our miraculous deliverance from a terrible fate. Almost the first object that my eyes rested upon, as soon as we left our retreat under the rocks, was a large round mass of dark-looking substance, a hundred yards away. In amazement I walked towards the spot where it lay hissing and steaming on the bare, wet rocks, surrounded by a thick coating of hailstones, which the hot sun was rapidly melting. It was a meteorolite of unusual dimensions, measuring exactly three feet nine inches in height, and was shaped like a huge gourd. A large crack extended completely down one side, about an inch across in its widest part.