The materials whence the following biographical memoirs of the two young men who were knit together in friendship, and whose adventurous enthusiasm led them into the dangerous situation in which their lives were terminated, have been drawn entirely from private and authentic sources of information. The author had the satisfaction of being personally acquainted with both the travellers, before they went to Africa, and had, in consequence, the best opportunities of learning the facts and circumstances of the previous part of their lives. But the present publication, of which they are the subject, owes its origin to an incidental conversation which he had with Dr. James Kay, R.N. the intimate friend both of Oudney and Clapperton. Dr. Kay not only had stored up in his memory many curious incidents and anecdotes of his friends, which he communicated freely, but he had in his possession a number of letters from them both, received before and after they had commenced their exploratory expedition. All these letters, with a variety of other documents relative to them and their affairs, were readily imparted to the author, to make whatever use of them his judgment and discretion might dictate. When he had resolved on publication, he mentioned his design to Professor Jameson, who, he was aware, had been instrumental in getting both our travellers appointed to the mission, in the accomplishment of which they went to Africa. The Professor not only approved of the design, but afforded the author essential service in its execution, by putting into his possession a file of letters from Dr. Oudney, written during the prosecution of his African expedition, and addressed, some of them to the Professor, and the rest of them to the traveller’s eldest sister. Professor Jameson, likewise, mentioned a number of interesting particulars relative chiefly to the arrangements of the expedition, and the views of the gentlemen by whom it was undertaken. The author is farther indebted for a part of his information to Lieutenant Sheriff, R.N. who had lived in habits of the closest intimacy with Captain Clapperton, during a series of years, and had become well acquainted with his history. Dr. Kay, moreover, applied to Mr. Anderson, formerly a resident in the West Indies, afterwards in Edinburgh, and now in the vicinity of Birmingham, also one of Captain Clapperton’s friends, to communicate what he recollected of him worthy being made public; and in reply he sent a letter, which was also given to the author, containing many valuable facts relating to an important period of Clapperton’s life; and stating the dates and particulars of a great part of his public career as an officer in the Navy, as well as mentioning a number of incidents, sentiments, and conduct, illustrative of his character as a private individual. These are the materials out of which the following narratives have been composed, and while, it is hoped, they will