It is impossible to describe the feelings of horror and disgust which pervaded the mind of every individual in the court during the delivery of this most treasonable and ferocious harangue.--It was of course expected that the wretched criminals would offer something in extenuation of the crimes of which they had been convicted, but it could never have been conceived that any man existed so deeply depraved, and so dreadfully hardened in crime, as to venture to justify projects of assassination, and to propagate doctrines of treason and murder, while standing as it were on the very brink of eternity, and about to be ushered into the presence of that God whom he had braved, by the impious and inhuman declarations to which he had just given utterance. Mr. Shelton next addressed himself to DAVIDSON, and put to him the same question which he had put to Thistlewood. Davidson advanced, and spoke to the following effect: “My Lords, you ask me what I have to say why I should not receive judgment to die for what has been said against me? I answer that I protest against the proceedings in this trial in toto. “In the first place, I always thought that in a court of justice the balance of justice was held with an even hand. But this has not been the case with me; I stand here helpless and friendless. I endeavoured to shew that the evidence against me was contradictory and incredible, and I hoped I had made an impression on the gentlemen in the box; but the moment I was done, the Attorney-General got up, and told them that the evidence was pure and uncontaminated, and to this I may add, that Mr. Baron Garrow almost insisted that they should pronounce me guilty. “I would ask, has any person identified me but the officers? who, every one knows, have at all times been instrumental in the death of innocent persons. “I do not now plead for my life; I know I must fall a victim to the vengeance of my enemies. But in what manner have I been guilty of High Treason? It would seem I was a silent spectator; none of the witnesses impute to me a single observation. Now is this probable? I had always got a great deal to say for myself, consequently I was not the person who would stand by without uttering a word; and yet such has been the testimony of Adams. “Then, with regard to the blunderbuss;--I have already explained that this was not mine, and that I acted in that affair entirely as the agent of Edwards. I have also declared how I came by the sword, and I now declare upon my soul, which will shortly appear before its Maker, that I never made any blow at any man, or discharged any carbine. “As for Munday, the man who swore that I had a long sword, with a pair of pistols in my girdle, who is he? He is a poor labouring man who comes here for his day’s pay and his victuals, to swear away the life of a fellow creature, and to support the unfounded charge against me that I meant to assassinate his Majesty’s Ministers.