The conveniences to reach the camp are by way of street cars. There were buildings on the north side of the camp; on the opposite side of the street, also on the east side, there was a hotel and other dwellings. Walsh's house was about one-fourth of a mile from the camp, with three or four houses between Walsh's house and the camp. My duties are two-fold; I have to report to Gen. Cook, at Springfield, commanding in the State, and to Gen. Hooker, at Department headquarters. In relation to prisoners of war, I am under the instructions of the Commissary General of prisoners at Washington. These prisoners were arrested at my order. Messrs. Walsh, Cantrill and Daniels were arrested by Lieut. Col. Skinner and a detachment of troops, at Walsh's house. Grenfel and the witness Shanks were arrested at the Richmond House, and Mr. Marmaduke was arrested at the residence of Dr. Edwards, No. 70 Adams street. Judge Morris was arrested by Mr. Keefe and members of the police. These arrests were made on the 6th of November. They were arrested upon information which led me to believe that there was on foot a conspiracy to release the prisoners, and get up a revolution in Indiana and Illinois. I regarded the emergency as immediate, and therefore acted promptly. I dared not trust the telegraph and the railroad, for I understood that the Sons of Liberty had men employed upon them. There were one hundred and fifty men arrested in all. They were principally from the South and Central Illinois, and had lately arrived in Chicago. These were mainly from Fayette and Christian counties, Illinois. These were arrested in grog-shops, boarding-houses, under the pavements, and in every part of the city. All of these men were arrested from their appearance and description, and by their looks were taken to be vagabonds. There were but few of them armed. They asserted that they came to Chicago to see the city. Some of them stated that they belonged to the Sons of Liberty, and some from the Southern army; about one tenth came from the Southern army. These bushwhackers were arrested partly by the city police, partly by citizens, and some by soldiers. I have heard of such an organization as Klingmen's men. Most of them coming from Christain and Fayette counties. It was chiefly made up of deserters from the Federal army and those who ran away from the draft, and was intended to resist the draft and all the operations of the Provost Marshal and the General government in the prosecution of the war. I succeeded in capturing the Captain and Lieutenant, and the principal men of the organization. It was not an organization under the United States or State law. I received all of these men up to the 8th of November, and all being strangers, I took them in.