of the death of another of their travellers, Mr. Henry Nicholls, at Old Calabar, in the bight of Benin, where he was preparing himself for an expedition into the interior country. The result of the information obtained by the travellers of the Association on the Western side of Africa, compared with that transmitted by Mr. Horneman from the North, had now rendered it advisable to make a new attempt in the latter direction. These wishes of the Association soon became known to Burckhardt, through his acquaintance with some of the leading members. To a mind equally characterised by courage, a love of science and a spirit of enterprise, such an undertaking afforded peculiar attractions, and accordingly it was not long before Burckhardt made an offer of his services to Sir Joseph Banks and the Rev. Dr. Hamilton. The latter, who was at that time Treasurer and acting Secretary of the Association, perceiving him to be undismayed by the strong representations of danger, which it was peculiarly right to make to a person of his birth and education, and having found him admirably adapted to the undertaking by his natural and acquired talents, as well as by the vigour of his constitution, laid his offer before the Association at the next general meeting in May, 1808. The offer was willingly accepted, and Burckhardt received his instructions on the 25th of January, 1809, having diligently employed the interval in London and Cambridge in the study of the Arabic language, and of those branches of science which were most necessary in the situation wherein he was about to be placed. He allowed his beard to grow and assumed the Oriental dress: he attended lectures on chemistry, astronomy, mineralogy, medicine and surgery, and in the intervals of his studies he exercised himself by long journeys on foot, bareheaded, in the heat of the sun, sleeping upon the ground, and living upon vegetables and water. As an intimate knowledge of Arabic was the most important of all acquirements, our traveller was instructed to proceed in the first instance to Syria, where at the same time that he studied the language in one of its purest schools, he might acquire a habitude of Oriental manners at a distance from those countries which were to be the scene of his researches, and consequently without much risque of being afterwards recognised. After a stay of two years in Syria, he was instructed to proceed to Cairo, from whence, accompanying the Fezzan caravan to Mourzouk by the same route traversed by Horneman, he was directed to make that town the point of his departure for the interior countries. On the 2d of March, 1809, Burckhardt sailed from Cowes on board of a merchant ship, proceeding with convoy to the Mediterranean, and he arrived at Malta in the middle of April, from whence he addressed two letters to Sir Joseph Banks, of which the following are extracts: _Extract of a letter dated Malta, April 22,_ 1809.