The study of natural history, and the composition of his great work, occupied the mind of Buffon from his first appointment as Intendant of the ‘_Jardin du Roi_,’ to within a few days of his death. In the prosecution of the plan he had laid down, he never permitted the slightest interruption. Pleasure and indolence had their attractions;—but they never held him for many hours from his favourite pursuits. Buffon spent the greater part of his time at Montbar, where, during some years, his friend Daubenton also resided. It was here that Buffon composed nearly the whole of his works. Many interesting details have been preserved of his habits of life, and his mode of composition. He was, like all men who have accomplished great literary undertakings, a severe economist of his time. The employment of every day was fixed with the greatest exactness. He used almost invariably to rise at five o’clock, compelling his man-servant to drag him out of bed whenever he was unwilling to get up. “I owe to poor Joseph,” he used to say, “ten or twelve volumes of my works.” At the end of his garden was a pavilion which served him as a study. Here he was seated for many hours of every day, in an old leathern chair, before a table of black birch, with his papers arranged in a large walnut-tree escritoire. Before he began to write he was accustomed to meditate for a long time upon his subject. Composition was to him a real delight; and he used to declare that he had spent twelve or fourteen hours successively at his desk, continuing to the last in a state of pleasure. His endeavours to obtain the utmost correctness of expression furnished a remarkable proof of the persevering quality of his mind. He composed, and copied, and read his works to friends, and re-copied, till he was entirely satisfied. It is said that he made eleven transcripts of the Epochs of Nature. In his domestic habits there was little to admire in the character of Buffon. His conversation was trifling and licentious, and the grossness which too often discloses itself in his writings was ill-concealed in his own conduct. He paid the most minute attention to dress, and delighted in walking to church to exhibit his finery to his wondering neighbours. Although he was entirely devoid of religious principle, and constantly endeavoured in his writings to throw discredit upon the belief of a great First Cause, he regularly attended high mass, received the communion, and distributed alms to pious beggars. In his whole character there appears a total absence of that simplicity which is the distinguishing attribute of men of the very highest genius.