"3. Any officer or soldier of this command who shall arrest and deliver to his master a Fugitive Slave, shall be summarily and severely punished, according to the laws relative to such crimes. "4. The strong Union sentiment in this Section is most gratifying, and all officers and soldiers, in their intercourse with the loyal, and those favorably disposed, are requested to act in their usual kind and courteous manner and protect them to the fullest extent. "By order of D. R. Anthony, Lieutenant-Colonel Seventh Kansas Volunteers, commanding: "W. W. H. LAWRENCE, "Captain and Assistant-Adjutant General." Lieutenant-Colonel Anthony was subsequently placed under arrest for issuing the above order. It was about this time, also, that General McClellan addressed to President Lincoln a letter on "forcible Abolition of Slavery," and "a Civil and Military policy"--in these terms: "HEADQUARTERS ARMY OF THE POTOMAC, "CAMP NEAR HARRISON'S LANDING, VA., July 7, 1862. "MR. PRESIDENT:--You have been fully informed that the Rebel Army is in the front, with the purpose of overwhelming us by attacking our positions or reducing us by blocking our river communications. I cannot but regard our condition as critical, and I earnestly desire, in view of possible contingencies, to lay before your Excellency, for your private consideration, my general views concerning the existing state of the Rebellion, although they do not strictly relate to the situation of this Army, or strictly come within the scope of my official duties. These views amount to convictions, and are deeply impressed upon my mind and heart. "Our cause must never be abandoned; it is the cause of Free institutions and Self-government. The Constitution and the Union must be preserved, whatever may be the cost in time, treasure, and blood. "If Secession is successful, other dissolutions are clearly to be seen in the future. Let neither Military disaster, political faction, nor Foreign War shake your settled purpose to enforce the equal operation of the Laws of the United States upon the people of every State. "The time has come when the Government must determine upon a Civil and Military policy, covering the whole ground of our National trouble. "The responsibility of determining, declaring, and supporting such Civil and Military policy, and of directing the whole course of National affairs in regard to the Rebellion, must now be assumed and exercised by you, or our Cause will be lost. The Constitution gives you power, even for the present terrible exigency.