As will be seen, the Mission was accompanied by two German gentlemen, Drs. Barth and Overweg--the former, of whom I had the pleasure of meeting in Egypt, after his enterprising ride along the coast of Libya. They are still in Central Africa, pushing their excursions on all sides, from Bornou into unknown tracts; and the accounts they may publish on their return will be anxiously looked for. The great traverse of the Saharan desert, however, with all its vicissitudes and dangers, the physical aspect of that wonderful region, and the manners of the various tribes that inhabit it, will, in the present volume, be found to be fully described--not, it is true, with much attempt at literary ornament, but in the vivid though simple language in which a man sets down impressions which he has just received. I have endeavoured to remove all the faults which may be supposed to have arisen from haste or carelessness, and have necessarily re-written several passages, and passed a correcting pen over the whole manuscript. But I think I may say with confidence, that there is no observation or statement in the following pages which cannot be justified by a reference to the original journals and scattered memoranda. To me this simple record of daily occurrences seems highly interesting. It divides itself, naturally, into a succession of parts of unequal importance. First comes an account of the journey to Mourzuk, the capital of Fezzan, containing the traverse of the frightful Hamadah or plateau which separates that province from the regency of Tripoli. Then we have a residence at Mourzuk itself, Mr. Richardson being obliged to wait the arrival from Ghât of an escort of Tuarick chieftains, with whom he had partly made acquaintance during a former trip in the desert. This escort appeared after some delay; and the Mission proceeded across the Fezzan plains to the independent state of Ghât, through a very wild and picturesque country. At this point began, if not the most arduous, at any rate the most dangerous, and at the same time the most novel, part of the journey. Mr. Richardson had undertaken, on his way to Soudan Proper (his first destination), to pass by the hitherto unexplored kingdom of Aheer or Asben, situated towards the southern limits of the Sahara. The march of the Mission across the deserts that lie between Ghât and that territory was rendered exciting by continual reports of danger from pursuing freebooters of the Haghar and Azgher tribes; but the enemy were outstripped, and no actual attack took place until the first inhabited districts of Aheer were reached. Here some lawless tribes levied black-mail, on the caravan, which was then permitted to proceed, though in doubt and alarm, until it arrived under the long-expected protection of Sheikh En-Noor, one of the great chiefs of the Kailouee tribes, at his town, or rather encampment, of Tintalous. Mr. Richardson's residence at this place was long and tedious. He