It is pretty clear that Hume looked upon these operations, not only as events likely to furnish him with some critical knowledge of warlike affairs, but with the inquiring eye of one who might have an opportunity of afterwards narrating them in some historical work. In the appendix there will be found a pretty minute account by Hume, of the causes which led to the failure of the expedition, in a paper apparently drawn up as a vindication of the conduct of General St. Clair. It does not appear to have been printed, although it seems to have been designed for the press. It contains the following passage: "A certain foreign writer, more anxious to tell his stories in an entertaining manner than to assure himself of their reality, has endeavoured to put this expedition in a ridiculous light; but as there is not one circumstance in his narration that has truth in it, or even the least appearance of truth, it would be needless to lose time in refuting it." The following passage in a letter to Sir Harry Erskine, dated 20th January, 1756,[219:1] shows that he here alludes to Voltaire: "I have been set upon by several to write something, though it were only to be inserted in the Magazines, in opposition to this account which Voltaire has given of our expedition. But my answer still is, that it is not worth while, and that he is so totally mistaken in every circumstance of that affair, and indeed of every affair, that I presume nobody will pay attention to him. I hope you are of the same opinion." But if Voltaire ever wrote on this subject, it must have been in one of those works of which he took the liberty of determinedly denying the authorship, for there appears to be nothing bearing on the subject in the usual editions of his published and acknowledged works, and in his "Précis du Siecle de Louis XV.," he passes over the expedition with the briefest possible allusion. We find Hume, on the return of the expedition, writing the following letter to Henry Home. It contains some curious notices of its writer's views and intentions, and betrays a sort of irresolution as to his subsequent projects, which seems to have haunted him through life. It is here that we find the first allusion to his historical studies. The extracts from his notes, or adversaria, printed above, show that he had read much in history, but chiefly in that of the ancient nations. It does not appear that he had yet paid any marked attention to British history. HUME _to_ HENRY HOME.