The discovery that gold existed in Midian was in the first place due to Haji Wali, familiar to the readers of Captain Burton's "Pilgrimage to Mecca and Medina" as the companion of the author in the caravanserai at Cairo while preparing for the journey to Hejjaz. The old Haji was once returning from a visit to Mecca, when halting by the shore of the Gulf of Akabah he scooped up a handful of granitic sand which sparkled in the bed of the wady and took it with him to Alexandria. There he took his specimen to an assayer, and, although the glitter which had attracted him proved only to be produced by the presence of mica, his sand when smelted in a crucible yielded a comparatively large portion of pure gold. The information of the discovery was not received with encouragement by the official to whom Haji Wali communicated it, and the latter ceased to think more of the subject. The assayer, however, set out for the new Eldorado and lost his life, probably murdered by the Bedawin. Captain Barton believes that the secret of the gold has never been really lost, and that the washing of sand has always been clandestinely carried on. Be that as it may, Captain Burton, believing the Haji's story, endeavoured to recommend his discovery to the notice of the Egyptian authorities, who _pooh-pooh'd_ the whole thing, and merely remarked that gold was becoming too common. For nearly a quarter of a century Captain Burton kept the secret to himself, but at length he again sought out his old friend Haji Wali, obtained from him more exact information as to the locality, and carried him off with the expedition, the means for organizing which Ismail Pasha furnished. The results of the expedition, which was only a pioneer one, were sufficient to corroborate all that the Haji had said, and to confirm Captain Burton's own prognostications drawn from the ancient sources which his extensive learning enabled him to consult. The adventures of the party fill the remainder of the first of his two books and form extremely pleasant reading.