Mr.!. LlnColn's Entrance Into Washington. II While in washington city, early in de cember, 1864, the writer of this article called on the President, with Isaae . N.Ar- Hold reerober of Congress from Chicago, one of Mr Lincoln's most trusted personal friends. We found him alone in the room ' wherein the Cabinet meetings are held tint the White, House) whose windows overlook the Potomac and Wasbingbn Monument. , At the request of the writer the President related the circumstances of his clandestine journey between Phila delphia and Washington. The tiarative is here given substantially in his own words as follows : ' • - , "I arrived at Philadelphia on the 2Vst: I agreed to stop over night, and on the following morning hoist the flag over . Independeece Hall. In the evening there _vas . a great crowd where I reeeived my friends• at the Coutinental Hotel: Mr. Judka .warm personal friend from Chi cago,sent for me to come to his room. I •• vent and found there Mr. Pinkerton, a skillful olico detective,also from Chicago who had been employed for some days in Baltimore, watching or searching for sus piciOus persons there: Pinkerton informed toe that a plan had been laid for my as sassination, the exact Unto when I ei peet to•go through Baltimore being •known. lie was well informed as to the plan, but did not know that the conspirators would f ilar°, pluck enough to execute it. He unzed 'lne to go right through with hint to Vashiugton that night. • - . ''l didn't like that. I had made en gagements to visit Harrisburg, and go • f rom there to Baltimore, nod I resolved to do so.; I could not believe there was a plot to i murder me. I made arrange ments, however, with Mr. Judd fur my return to Philadelphia the next night,if I should be convinced that there was danger in goiag through Baltimore. I told him that if ,I should meet at Harrisburg, as I had atlother pittees,a delegation to go with we to the next place (then Baltimore,) I should feel safe, and go on. . 1 . When I was making my way back tea my room,through crowds of people,l met Frederick Seward. We went together to nay remit, when he told me that he bad been sent, at the instance, of his father, and General Scott,to inform me that their detectives, in Baltiunore,had discovered a plot there to, assassinate me. They knew . nothing of nnkerton's movements. I now believed such a plot to be in existenceo. "The pest morning I raisedhe flag lover Independence Ball, and th n went H to arriSburg with Mr. Sumner, M Major d (now General) Hunter, r. Jud , Mr. Lemon and others. There I met the 'Legislature .and people, dined, and waited I until the time appointed for me to leave. In the meantime Mr. Judd had so secured the telegraph that, no 'communication could pass to Baltimore and give the conspira tors knowledge of a change of my plans. "In New York some, friend had given toe a new beaver hat in a box and in it 'had • placed a soft wool. bat. I. had this boz in my room. Having informed a very I few friends of the secret of my new move., anent, and the causej. put on an old over-I siout I had with Me, and putting the soft i hat in my pocket, I walked out of (he house at a back door,bare-beaded,without -exciting any special, curiosity. Then I put on the soft hat and joined my friends 1 without being recognized by strangers,for 1 was not the same man. Sumner and Hunter Wilted to accompany me. I said 1 vo, you are known, and your presence 1 inight betray me. I will only take Lamon , (now marshal of this district,) whom no-1 body knew, and .Mr. Judd. Sumner and I Iluoter felt hurt. . "We went back to Philadelphia; and found a message t there from Pinkerton < who had returned to Baltimore,) that the i .conspirators hail held their final Meeting