"I. It has been represented that important information respecting the number and condition of our Forces, is conveyed to the Enemy by means of Fugitive Slaves who are admitted within our lines. In order to remedy this evil, it is directed that no such Persons be hereafter permitted to enter the lines of any camp, or of any forces on the march; and that any now within such lines be immediately excluded therefrom." This Order was subsequently explained in a letter, of December 8, 1861, from General Halleck to Hon. F. P. Blair, in which he said: " * * * Order No. 3 was in my mind, clearly a Military necessity. Unauthorized persons, black or white, Free or Slaves, must be kept out of our camps, unless we are willing to publish to the Enemy everything we do or intend to do. It was a Military and not a political order. I am ready to carry out any lawful instructions in regard to Fugitive Slaves which my superiors may give me, and to enforce any law which Congress may pass. But I cannot make law, and will not violate it. You know my private opinion on the policy of Confiscating the Slave Property of Rebels in Arms. If Congress shall pass it, you may be certain that I shall enforce it. Perhaps my policy as to the treatment of Rebels and their property is as well set out in Order No. 13, issued the day (December 4, 1861), your letter was written, as I could now describe it." It may be well also to add here, as belonging to this period of doubtfulness touching the status of escaped Slaves, the following communication sent by Secretary Seward to General McClellan, touching "Contrabands" in the District of Columbia: "DEPARTMENT OF STATE, "WASHINGTON, December 4, 1861. "To Major-General GEORGE B. MCCLELLAN, Washington: "GENERAL: I am directed by the President to call your attention to the following subject: "Persons claimed to be held to Service or Labor under the laws of the State of Virginia, and actually employed in hostile service against the Government of the United States, frequently escape from the lines of the Enemy's Forces and are received within the lines of the Army of the Potomac. "This Department understands that such Persons afterward coming into the city of Washington are liable to be arrested by the city police, upon the presumption, arising from color, that they are Fugitives from Service or Labor. "By the 4th section of the Act of Congress approved August 6, 1861, entitled, 'An Act to Confiscate Property used for Insurrectionary purposes,' such hostile employment is made a full and sufficient answer to any further claim to Service or Labor. Persons thus employed and escaping are received into the Military protection of the United States, and their arrest as Fugitives from Service or Labor should be immediately followed by the Military arrest of the parties making the seizure.