had put forth, at no period, any enduring branch; in other words, that the entire family lay in the direct line of descent, and had always, with very trifling and very temporary variation, so lain.  It was this deficiency, I considered, while running over in thought the perfect keeping of the character of the premises with the accredited character of the people, and while speculating upon the possible influence which the one, in the long lapse of centuries, might have exercised upon the other—­it was this deficiency, perhaps, of collateral issue, and the consequent undeviating transmission, from sire to son, of the patrimony with the name, which had, at length, so identified the two as to merge the original title of the estate in the quaint and equivocal appellation of the “House of Usher”—­an appellation which seemed to include, in the minds of the peasantry who used it, both the family and the family mansion.

I have said that the sole effect of my somewhat childish experiment—­that of looking down within the tarn—­had been to deepen the first singular impression.  There can be no doubt that the consciousness of the rapid increase of my superstition—­for why should I not so term it?—­served mainly to accelerate the increase itself.  Such, I have long known, is the paradoxical law of all sentiments having terror as a basis.  And it might have been for this reason only, that, when I again uplifted my eyes to the house itself, from its image in the pool, there grew in my mind a strange fancy—­a fancy so ridiculous, indeed, that I but mention it to show the vivid force of the sensations which oppressed me.  I had so worked upon my imagination as really to believe that about the whole mansion and domain there hung an atmosphere peculiar to themselves and their immediate vicinity—­an atmosphere which had no affinity with the air of heaven, but which had reeked up from the decayed trees, and the grey wall, and the silent tarn—­a pestilent and mystic vapour, dull, sluggish, faintly discernible, and leaden-hued.

Shaking off from my spirit what must have been a dream, I scanned more narrowly the real aspect of the building.  Its principal feature seemed to be that of an excessive antiquity.  The discoloration of ages had been great.  Minute fungi overspread the whole exterior, hanging in a fine tangled web-work from the eaves.  Yet all this was apart from any extraordinary dilapidation.  No portion of the masonry had fallen; and there appeared to be a wild inconsistency between its still perfect adaptation of parts, and the crumbling condition of the individual stones.  In this there was much that reminded me of the specious totality of old woodwork which has rotted for long years in some neglected vault, with no disturbance from the breath of the external air.  Beyond this indication of extensive decay, however, the fabric gave little token of instability.  Perhaps the eye of a scrutinising observer might have discovered a barely perceptible fissure, which, extending from the roof of the building in front, made its way down the wall in a zigzag direction, until it became lost in the sullen waters of the tarn.