This pasage tells us that the narrator had been at the house before, and that it had been dear to him. He probably was used to looking at the reflection of the house of Usher on the watery surface of the tarn. The house now shows plenty of signs of decay, and by looking at its reflection, the narrator attempts to dispel the gloom that haa overtaken him and revive the feelings of the happier days when he used to visit his friend Usher in his youth.
