Several oases, according to the report, had been entirely blotted out, and a number of caravans had been lost in the sweep of the tremendous storm, which had towered to a height of twelve thousand feet and had covered many hundred square miles. No one caught in it had come out alive nor had any trace of the missing caravans been found. Subsequent dispatches brought the news that the affected region was full of minor upheavals for weeks after the cessation of the main disturbance, and that a furore of superstitious fear had been excited among the desert tribes, who believed that the end of the world was now imminent. But, in the surge and press of more sensational and apparently more important items then engaging the world’s attention, no one, not even the most advanced and alert men of science, gave more than a passing thought to the sandstorm.Toward the end of the same year, there came a fresh report from the Sahara, this time of so strange and inexplicable a nature that it immediately aroused the curiosity of many scientists, who forthwith formed an expedition to investigate the conditions that had given rise to the report.
