Before the morning of Monday, November 7th dawned, a dispatch, embracing the most important features of the Sunday night meeting, had been prepared by the writer, and forwarded to the commandant of Camp Douglas, who, during the night, arrested Judge Morris, Brig.-Gen. Charles Walsh, and others, and a large number of "butternuts," who had been the subject of discussion at the Sunday night meeting, and these prisoners were safely lodged in Camp Douglas. The news of the arrests, and the charges upon which they were made, caused intense excitement among all classes, loyal men rejoicing for the promptness and wisdom of the measure, while the Copperheads howled fearfully, and denounced it as a fresh evidence of "Lincoln's tyranny." As the facts became generally known, there was an unanimous expression of approval on the part of all good, loyal citizens. The consternation of the Copperheads was truly great; they felt that, notwithstanding their many precautions for secrecy, the eye of the government had been upon them in their most secret places, and this consternation was not by any means relieved when they read in the morning papers an extract of Brig.-Gen. Charles Walsh's speech before the order in the Invincible Club hall. They felt certain that they were watched, and that they were under careful espionage, and the effect was precisely what we had expected and desired. It was telegraphed in every direction, that the government bad a complete knowledge of their designs and proceedings, and such a tremor and quaking with fear the Copperheads had not previously exhibited. It completely deranged their designs, and caused an utter abandonment of the plot, for the leaders in Chicago having been arrested, no one knew how soon his turn would come, and it is a general and well-established fact, that however sanguinary and fiendish a rabble may prove when attacking their victims by surprise, the mass of such beings lose their brute courage when discovering, to a certainty, that the details of their strategy are known, and the party upon whom an assault is contemplated is prepared, and will repel the attack with that fury, vigor, desperation and perseverance that will surely carry death to many of the assailants. They lack zeal, because they know their cause is a bad one, just as one honest man will put three rogues to flight. It was telegraphed that the heads of the government were fully advised of the conspiracy, and that officers were freely visiting all the more important temples in the North-West, mingling in the "business" of these meetings, and apprising the military leaders of every move which had been made, which was being made, and which was contemplated. Suspicion was aroused, and so general did this distrust soon become, that no one was willing to trust his neck in a halter, and any one of his associates having possession of the other end. Suddenly a most wonderful reform was apparent, as rats disappear from view after a few have been captured.