"Up to this time I have had come within my lines men and women with their children, entire families, each family belonging to the same owner. I have, therefore, determined to employ, as I can do very profitably, the able-bodied persons in the party, issuing proper food for the support of all, and charging against their services the expense of care and sustenance of the non-laborers, keeping a strict and accurate account as well of the services as of the expenditure, having the worth of the services, and the cost of the expenditure, determined by a Board of Survey, to be hereafter detailed. I know of no other manner in which to dispose of this subject and the questions connected therewith. "As a matter of Property to the Insurgents, it will be of very great moment, the number that I now have amounting, as I am informed, to what, in good times, would be of the value of sixty thousand dollars. Twelve of these Negroes, I am informed, have escaped from the batteries on Sewall's Point, which, this morning, fired upon my expedition as it passed by out of range. As a means of offense, therefore, in the Enemy's hands, these Negroes, when able-bodied, are of the last importance. Without them the batteries could not have been erected, at least for many weeks. "As a Military question it would seem to be a measure of necessity to deprive their masters of their services. How can this be done? As a political question and a question of humanity, can I receive the services of a father and mother, and not take the children? Of the humanitarian aspect I have no doubt. Of the political one I have no right to judge. I therefore submit all this to your better judgment, and as the questions have a political aspect, I have ventured, and I trust I am not wrong in so doing, to duplicate the parts of my dispatch relating to this subject, and forward them to the Secretary of War." In reply to the duplicate copy of this letter received by him, Secretary Cameron thus answered: "WASHINGTON, May 30, 1861. "SIR: Your action in respect to the Negroes who came within your lines from the service of the Rebels is approved. The Department is sensible of the embarrassments which must surround officers conducting Military operations in a State by the laws of which Slavery is sanctioned. "The Government cannot recognize the rejection by any State of the Federal obligations, nor can it refuse the performance of the Federal obligations resting upon itself. Among these Federal obligations, however, none can be more important than that of suppressing and dispersing armed combinations formed for the purpose of overthrowing its whole Constitutional authority.