The capture of Hilton Head and Bay Point by the navy, November 7th, 1861, was followed by the immediate military occupation of the Sea Islands. In the latter part of December, the Secretary of the Treasury, Mr. Chase, whose foresight as a statesman and humane disposition naturally turned his thoughts to the subject, deputed a special agent to visit this district for the purpose of reporting upon the condition of the negroes who had been abandoned by the white population, and of suggesting some plan for the organization of their labor and the promotion of their general well-being. The agent, leaving New York January 13th, 1862, reached that city again on his way to Washington on the 13th of February, having in the mean time visited a large number of the plantations, and talked familiarly with the negroes in their cabins. The results of his observations, in relation to the condition of the people, their capacities and wishes, the culture of their crops, and the best mode of administration, on the whole favorable, were embodied in a report. The plan proposed by him recommended the appointment of superintendents to act as guides of the negroes and as local magistrates, with an adequate corps of teachers. It was accepted by the Secretary with a full indorsement, and its execution intrusted to the same agent. The agent presented the subject to several members of Congress, with whom he had a personal acquaintance, but, though they listened respectfully, they seemed either to dread the magnitude of the social question, or to feel that it was not one with which they as legislators were called upon immediately to deal. The Secretary himself, and Mr. Olmsted, then connected with the Sanitary Commission, alone seemed to grasp it, and to see the necessity of immediate action. It is doubtful if any member of the Cabinet, except Mr. Chase, took then any interest in the enterprise, though it has since been fostered by the Secretary of War. At the suggestion of the Secretary, the President appointed an interview with the agent. Mr. Lincoln, who was then chafing under a prospective bereavement, listened for a few moments, and then said, somewhat impatiently, that he did not think he ought to be troubled with such details,--that there seemed to be an itching to get negroes into our lines; to which the agent replied, that these negroes were within them by the invitation of no one, being domiciled there before we commenced occupation. The President then wrote and handed to the agent the following card:-- "I shall be obliged if the Sec. of the Treasury will in his discretion give Mr. Pierce such instructions in regard to Port Royal contrabands as may seem judicious. "A. LINCOLN. "Feb. 15, 1862."