On this subject he writes to his cousin, Herbert Hill, at that time one of the librarians of the "Bodleian:"--"When I was at the British Museum the other day, walking through the rooms with Carey, I felt that to have lived in that library, or in such a one, would have rendered me perfectly useless, even if it had not made me mad. The sight of such countless volumes made me feel how impossible it would be to pursue any subject through all the investigations into which it would lead me, and that therefore I should either lose myself in the vain pursuit, or give up in despair, and read for the future with no other object than that of immediate gratification. This was an additional reason for being thankful for my own lot, aware as I am that I am always tempted to pursue a train of inquiry too far." The reader need not be told that the sorrows and anxieties of the last few years of my father's life had produced, as might be expected, a very injurious effect upon his constitution, both as to body and mind. Acutely sensitive by nature, deep and strong in his affections, and highly predisposed to nervous disease, he had felt the sad affliction which had darkened his latter years far more keenly than any ordinary observer would have supposed, or than even appears in his letters. He had, indeed, then, as he expressed himself in his letter declining the Baronetcy, been "shaken at the root;" and while we must not forget the more than forty years of incessant mental application which he had passed through, it was this stroke of calamity which most probably greatly hastened the coming of the evil day, if it was not altogether the cause of it, and which rapidly brought on that overclouding of the intellect which soon unequivocally manifested itself. This, indeed, in its first approaches, had been so gradual as to have almost escaped notice; and it was not until after the sad truth was fully ascertained, that indications of failure (some of which I have already alluded to) which had appeared some time previously, were called to mind. A loss of memory on certain points, a lessening acuteness of the perceptive faculties, an occasional irritability (wholly unknown in him before); a confusion of time, place, and person; the losing his way in well-known places--all were remembered as having taken place, when the melancholy fact had become too evident that the powers of his mind were irreparably weakened.