The new programme having been adopted, all that was necessary was to fix upon the day. The day must be one upon which more than the usual number of visitors would be in the city, in order that their coming and staying would not be noticed, and it seemed they selected the day of election, as the one most suitable for their purposes; and if possible a day when the military and civil authorities would be most likely to be caught off their guard. For several days before the 8th of November last, their spies had been coming into the city, in order to get suitable quarters for the men when they arrived, and in parts of the city where they would be least liable to suspicion. In the efforts to secure suitable boarding houses for these incendiaries, various citizens of Chicago took an active part, and even went to the depots to receive them, and escort them into the bosom of the city they were so soon to attempt to destroy. It was not until the Saturday just before the election, that Gen. Sweet had positive information of the _rebels_ being in the city, and received full information of the details of their plans, and began to take measures quietly to capture them. This he did at once, and at the same time had every preparation made to repel any attack upon the garrison of Camp Douglas; and he succeeded admirably, following up his information with such energy, that before daylight of the Monday morning following, he had captured enough of the rebel leaders (and their friends in such connexion as to leave no doubt of their guilt,) to make every disloyal man quake in his boots. The captures of the military and police were not confined alone to the conspirators, and in addition to them were captured immense military stores of all kinds, boxes of guns already shotted, cart loads of army pistols loaded and ready for the bloody work expected of them, holsters, pistol belts, cartridges by the cart load, and enough munitions of war to have started an arsenal of moderate size. These arms were not taken from the rebels, but found in the houses of citizens of Chicago, who can produce witnesses upon the stand (of pretended loyalty and standing, some of them being office-holders under the Government,) to swear that they themselves are, and have always been loyal and true to their allegiance. In the house of Charles Walsh, most of these arms were taken, and also there were captured two rebel soldiers, Captain George Cantrill and Charles Travis Daniels, who were shortly after identified; and Cantrill partly confessed his views, and his complicity with the Copperheads. This man Cantrill had been one of those who had come to Chicago during the Convention, for the same purpose, and averred that then and at the election, the Copperheads had offered and held out to them every inducement to get them here. That had it not been for them he would never have come here. It may be well here to publish a little incident, showing fully the kindred feelings