and a kind of quadruple alliance to extinguish, without which all their efforts would be in vain.  The death of Lander put an end to this speculation, as it was then clearly seen that unless the actual constitution of the countries situate on the banks of the Quorra, could be placed under a different authority, and the people brought to a state of positive submission, it were futile to expect any solid or permanent advantages from any commercial relations they might form.  The insalubrity of the climate, so very injurious to a European constitution, was also a great drawback to the prosecution of those commercial advantages, which the discovery of the termination of the Niger offered to this country; it was literally sending men to die a premature death to embark them on board of an African trader, and we have the authority of the late Captain Fullerton for stating, that he scarcely ever knew an individual who, although he might escape the pestilential fevers of the country for the second, and even the third or fourth time, that did not eventually die.  Notwithstanding, however, the latter serious drawback to the prosecution of our geographical knowledge of the interior of Africa, there are yet to be found amongst us some hardy, gallant spirits, who, fearless of every danger, and willing to undergo every privation which the human constitution can endure, are still anxious to expose themselves to such appalling perils, for the promotion of science and the general welfare of the human race.  Amongst those individuals, a young gentleman of the name of Coulthurst has rendered himself conspicuous.  He was the only surviving son of C. Coulthurst, Esquire, of Sandirvay, near Norwich, and was thirty-five years of age at the time of his death.  He was educated at Eton, studied afterwards at Brazen Nose College, Oxford, and then went to Barbadoes, but from his infancy his heart was set on African enterprise.  His family are still in possession of some of his Eton school books, in which maps of Africa, with his supposed travels into the interior, are delineated; and at Barbadoes he used to take long walks in the heat of the day, in order to season himself for the further exposure, which he never ceased to contemplate.  His eager desires also took a poetical form, and a soliloquy of Mungo Park, and other pieces of a similar description, of considerable merit, were written by him at different times.  The stimulus that at length decided him, however, was the success of the Landers.  He feared that if he delayed longer, another expedition would be fitted out on a grand scale, and leave nothing which an individual could attempt.