The following description of D'Holbach is given in a little sketch, published by Mr. Watson in 1834, as taken from Grimm's "Correspondence:"--"D'Hol-bach's features were, taken separately, regular, and even handsome, yet he was not a handsome man. His forehead, large and open, like that of Diderot, indicated a vast and capacious mind; but his forehead having fewer sinuosities, less roundness than Diderot's, announced less warmth, less energy, and less fecundity of ideas. A craniologist would say that in both D'Holbach and Diderot, the philosophical organs were largely developed, but that Diderot excelled in ideality; D'Holbach's countenance only indicated mildness, and the habitual sincerity of his mind. He was incapable of personal hatred. Though he detested priests and Jesuits, and all other supporters of despotism and superstition; and though when speaking of such people, his mildness and good temper were sometimes transformed into bitterness and irritability; yet it is affirmed that when the Jesuits were expelled from France, D'Holbach regarded them as objects of commiseration and of pity, and afforded them pecuniary assistance." The titles of D'Holbach's works may be found in Barbier's "Dictionary of Anonymous Works," and in St. Surins's article in the "Biographie Universelle," so in the little tract before mentioned as published by J. Watson. D'Holbach contributed largely to the first French Encyclopaedia, and other works of a like character. Of the "System of Nature" we have already spoken, and shall rather leave our readers to the work itself than take up more space in discussing its authorship. After having lived a life of comfort, in affluent circumstances, and always surrounded by a large circle of the best men of the day, D'Holbach died on January the 21st, 1789, being, then sixty-six years of age. The priests have never pictured to us any scene of horror in relation to his dying moments. The good old man died cheered and supported in his last struggle by those men whom he had many times assisted in the hard fighting of the battle of life. J. A. Naigeon, who had been his friend for thirty years; paid an eloquent tribute to D'Holbach's memory, in an article which appeared in the "Journal de Paris" of February the 9th, 1789, and we are not aware that any man has ever written anything against D'Hol-bach's personal character. EXTRACTS FROM "THE SYSTEM OF NATURE." Although we may not attempt to express a decided opinion as to the authorship of "Le Système de la Nature," we feel it our duty to present some of its principal arguments to the consideration of our readers. The author opens his work with this passage:--