I well remember that suggestions arising from this ballad led us into a train of thought, wherein there became manifest an opinion of Usher's which I mention not so much on account of its novelty, (for other men[1] haye thought thus,) as on account of the pertinacity with which he maintained it. This opinion, in its general form, was that of the sentience of all vegetable things. But in his disordered fancy the idea had assumed a more daring character, and trespassed, under certain conditions, upon the kingdom of inorganization. I lack words to express the full extent, or the earnest _abandon_ of his persuasion. The belief, however, was connected (as I have previously hinted) with the gray stones of the home of his fore-fathers. The conditions of the sentience had been here, he imagined, fulfilled in the method of collocation of these stones--in the order of their arrangement, as well as in that of the many fungi which overspread them, and of the decayed trees which stood around--above all, in the long undisturbed endurance of this arrangement, and in its reduplication in the still waters of the tarn. Its evidence--the evidence of the sentience--was to be seen, he said (and I here started as he spoke), in the gradual yet certain condensation of an atmosphere of their own about the waters and the walls. The result was discoverable, he added, in that silent, yet importunate and terrible influence which for centuries had moulded the destinies of his family, and which made _him_ what I now saw him--what he was. Such opinions need no comment, and I will make none. [Footnote 1: Watson, Dr. Percival, Spallanzani, and especially the Bishop of Landaff.--See "Chemical Essays," Vol. V.] Our books--the books which, for years, had formed no small portion of the mental existence of the invalid--were, as might be supposed, in strict keeping with this character of phantasm. We pored together over such works as the Ververt and Chartreuse of Gresset; the Belphegor of Machiavelli; the Heaven and Hell of Swedenborg; the Subterranean Voyage of Nicholas Klimm by Holberg; the Chiromancy of Robert Flud, of Jean D'Indaginé, and of De la Chambre; the Journey into the Blue Distance of Tieck; and the City of the Sun of Campanella. One favorite volume was a small octavo edition of the _Directorium Inquisitorum_, by the Dominican Eymeric de Gironne; and there were passages in Pomponius Mela, about the old African Satyrs and Ægipans, over which Usher would sit dreaming for hours. His chief delight, however, was found in the perusal of an exceedingly rare and curious book in quarto Gothic--the manual of a forgotten church--the _Vigilice Mortuorum secundum Chorum Ecclesiæ Maguntinæ_.