On the 20th February they embarked at Southampton, under Dr. Vogel, a young German astronomer attached to the expedition, and after a short stay on shore at Malta, proceeded to Tripoli, where they tarried for some months, devoting their leisure to learning the Arabic dialect, and familiarizing themselves with the mode of riding on camel-back. Corporal Church also mastered the use of the sextant, mountain barometer, azimuth compass, &c., so as to make ready observations with them. From a dangerous illness private Swenny could not go on with the expedition, and was sent to England with high testimonials for zeal and ability from Dr. Vogel and Colonel Herman, the Tripoline consul. The ill chance which deprived the enterprise of his valuable services was much regretted by Lord Clarendon, who granted the invalid in addition to his salary a gratuity of 15_l._ His place was supplied by private John Maguire, a fine soldier and skilful mechanic, who was selected from among thirty-six volunteers of the company of the corps at Malta. The caravan under Dr. Vogel was a large one of thirty-seven camels, carrying upwards of four tons of baggage and presents for the sultan of Bornou and other chiefs. The organization of the force, with the packing and distribution of the baggage, was chiefly confided to corporal Church, who in consequence of the temporary indisposition of Dr. Vogel set out in charge of the expedition on the 19th June, in company with Mr. F. Warrington, a gentleman well known in Tripoli, to Beni-olid, where he arrived on the 26th. There Dr. Vogel joined on the 2nd July, and a day or two afterwards the caravan was again in motion. At Sokna, midway between Tripoli and Moorzuk, a number of the natives approached them with greeting, and conducted them to an ample residence already prepared for their accommodation. A supply of provisions, consisting of melons, green figs, dates, two sheep, two large dishes of bazeen, and three dishes of some other compound, owning a name more curious than intelligible, was placed at their disposal. In the evening a similar presentation was made to them, and the like extravagant proofs of generosity were continued to the travellers for four days more. Presents were made in return to compensate for this hospitality; but the natives would only accept a few specimens of English cutlery in the shape of knives and razors. On quitting Sokna the governor and the people accompanied the caravan a short distance on the road, and took their leave of the adventurers with unequivocal demonstrations of sympathy and good will.