The first night of the Doctor's performance was extremely wet, and the writer of this, who was then quite a boy, composed his whole audience. The Doctor's spouse invited me behind the curtains to the fire, on one side of which sat the great conjuror himself, his person being enveloped in an old green, greasy roquelaire, and his head decorated with a black velvet cap. On the other side of the fire-place sat Mrs. Katerfelto and daughter, in a corresponding style of dress--that is to say, equally ancient and uncleanly. The family appeared, indeed, to be in distressed circumstances. The Doctor told me the following odd anecdote:--Some time before he had sent up from a town in Yorkshire a fire-balloon, for the amusement of the country people, and at which they were not a little astonished; but in a few days afterwards the Doctor was himself more astonished on being arrested for having set fire to a hay rick! The balloon, it appeared, had in its descent fallen upon a rick, which it consumed, and the owner, having ascertained by whom the combustible material had been dispatched, arrested the doctor for the damage. As the Doctor was unable to pay the amount, he was obliged to go to prison, thus proving that it is sometimes easier to raise the devil than to "raise the wind." Having been admitted behind the scenes, I had an opportunity of seeing the conjuror's apparatus, but the performance was postponed to another evening. On the next night of the Doctor's appearance he had a tolerably respectable auditory, and the following incidents may amuse your readers, as they occasioned much laughter at the moment. Among the company was the Rev. Mr. P., a minor canon. The conjuror, in the course of his tricks, desired a card to be drawn from the pack, by one of the company, which was done, the card examined and returned into the pack, in the presence of the audience; but on the company being requested to take the card again from the pack, it could not be found. The Doctor said it must have been taken out by some one present, and civilly begged the reverend gentleman to search his pockets. Indignant at such an insinuation, the inflamed divine for some time refused to comply, but at length being persuaded, he drew forth the identical card, much to his own surprise and the amusement of the spectators. A similar trick was also played with some money, which unaccountably found its way into the reverend gentleman's pocket, a circumstance which put him out of all patience; and he proceeded most sternly to lecture the astounded Doctor for having practised his levity on a gentleman of his cloth, upon which, and threatening the poor conjuror with vengeance, he strode out of the room. Katerfelto declared that, although he was a conjuror, he did not know the gentleman was a divine. Katerfelto left Durham soon afterwards, and I have heard died at Bristol. _Pentonville._ DUNELM. * * * * * (_To the Editor._)