"A very singular occurrence took place the day I was nominated at Chicago, four years ago, of which I am reminded to-night. In the afternoon of the day, returning home from down town, I went upstairs to Mrs. Lincoln's reading-room. Feeling somewhat tired, I lay down upon a couch in the room, directly opposite a bureau, upon which was a looking-glass. As I reclined, my eye fell upon the glass, and I saw distinctly two images of myself, exactly alike, except that one was a little paler than the other. I arose, and lay down again with the same result. It made me quite uncomfortable for a few moments, but, some friends coming in, the matter passed out of my mind. The next day, while walking on the street, I was suddenly reminded of the circumstance, and the disagreeable sensation produced by it returned. I had never seen anything of the kind before, and did not know what to make of it. I determined to go home and place myself in the same position, and if the same effect was produced, I would make up my mind that it was the natural result of some principle of refraction of optics which I did not understand, and dismiss it. I tried the experiment, with a like result; and, as I had said to myself, accounting for it on some principle unknown to me, it ceased to trouble me. But some time ago I tried to produce the same effect here by arranging a glass and couch in the same position, without success." He did not say, at this time, that either he or Mrs. Lincoln attached any significance to the phenomenon, but it is known that Mrs. Lincoln regarded it as a sign that the President would be re-elected. President Lincoln once invited a famous medium to display his alleged supernatural powers at the White House, several members of the Cabinet being present. For the first half-hour the demonstrations were of a physical character. At length rappings were heard beneath the President's feet, and the medium stated that an Indian desired to communicate with him. "I shall be happy to hear what his Indian majesty has to say," replied the President, "for I have very recently received a deputation of our red brethren, and it was the only delegation, black, white, or blue, which did not volunteer some advice about the conduct of the war." The medium then called for a pencil and paper, which were laid upon the table and afterwards covered with a handkerchief. Presently knocks were heard and the paper was uncovered. To the surprise of all present, it read as follows: "Haste makes waste, but delays cause vexations. Give vitality by energy. Use every means to subdue. Proclamations are useless. Make a bold front and fight the enemy; leave traitors at home to the care of loyal men. Less note of preparation, less parade and policy talk, and more action.--Henry Knox." "That is not Indian talk," said the President. "Who is Henry Knox?" The medium, speaking in a strange voice, replied, "The first Secretary of War."