Hume was again called away from the studious retirement of Ninewells, by being appointed secretary to the mission of his friend General St. Clair, to the court of Turin. The real object of the mission, in whatever aspect it might have been openly represented, certainly was to satisfy the British court on the question, whether Sardinia, and perhaps some of the other stipendiary states, had furnished their respective quotas of men to the war. The following letter by Hume to his friend Oswald, details many of his feelings on assuming this new duty. It will be found to be as different in tone from his previous letters, as the life he was entering on was different from his hermit retirement at Ninewells, or his slavery at Weldhall. This letter, indeed, appears to mark an epoch in his correspondence. It is the first in which he mentions miscellaneous public events, with the feeling of one who takes an interest in the living politics of his time; and shows that the brief episode of active practical life, in which he had just borne a share, and the prospect of a renewal of such scenes, had opened his mind to the reception of external impressions. HUME _to_ JAMES OSWALD. "I have little more to say to you than to bid you adieu before I leave this country. I got an invitation from General St. Clair, to attend him in his new employment at the court of Turin, which I hope will prove an agreeable, if not a profitable jaunt for me. I shall have an opportunity of seeing courts and camps; and if I can afterwards be so happy as to attain leisure and other opportunities, this knowledge may even turn to account to me, as a man of letters, which, I confess, has always been the sole object of my ambition. I have long had an intention, in my riper years, of composing some history; and I question not but some greater experience in the operations of the field, and the intrigues of the cabinet, will be requisite, in order to enable me to speak with judgment upon these subjects. But, notwithstanding of these flattering ideas of futurity, as well as the present charms of variety, I must confess that I left home with infinite regret, where I had treasured up stores of study and plans of thinking for many years. I am sure I shall not be so happy as I should have been had I prosecuted these. But, in certain situations, a man dares not follow his own judgment or refuse such offers as these. "The subscriptions for the stocks were filled up with wonderful quickness this year; but, as the ministry had made no private bargains with stock-jobbers, but opened books for every body, these money-dealers have clogged the wheels a little, and the subscribers find themselves losers on the disposal of their stock, to their great surprise.