An officer of the United States, with the commission of Major, with the national uniform, has been pushed from a car on Pennsylvania Avenue for no other offence than that he was black. Now, Sir, I desire to say openly that we had better give up railroads in the national capital, if we cannot have them without such an outrage upon humanity, and upon the national character. An incident like that, Sir, is worse at this moment than defeat in battle. It makes enemies for our cause abroad, and sows distrust. I hope, therefore, that the Committee on the District of Columbia,--I know the disposition of my honorable friend, the Chairman of that Committee,--in the bills we are to consider relative to the railroads in this District, will take care that such safeguards are established as will prevent the repetition of any such wrong. In reply to Mr. Hendricks, of Indiana, Mr. Sumner spoke again. MR. PRESIDENT,--I am sure that the Senator from Indiana [Mr. HENDRICKS] is mistaken in regard to the provision for colored people. There may be here and there, now and then, once in a long interval of time, a car which colored people may enter; but any person traversing the avenue will see that those cars appear very rarely; and if any person takes the trouble to acquaint himself with the actual condition of things, he will learn that there are great abuses and hardships, particularly among women, growing out of this outrage. I use plain language, Sir, for it is an outrage. It is a disgrace to this city, and a disgrace also to the National Government, which permits it under its eyes. It is a mere offshoot of the Slavery which, happily, we have banished from Washington. Now go back to the facts on which I predicated my motion. The Senator from Iowa [Mr. GRIMES] has referred to the colored officer. I have in my hand his letter, addressed to his military superior, making a report of the case, and, as it is very brief, I will read it. “WASHINGTON, D. C., February 1, 1864. “SIR,--I have the honor to report that I have been obstructed in getting to the Court this morning by the conductor of car No. 32 of the Fourteenth Street line of the city railway. “I started from my lodgings to go to the hospital I formerly had charge of, to get some notes of the case I was to give evidence in, and hailed the car at the corner of Fourteenth and I Streets. It was stopped for me, and, when I attempted to enter, the conductor pulled me back, and informed me that I must ride on the front with the driver, as it was against the rules for colored persons to ride inside. I told him I would not ride on the front, and he said I should not ride at all. He then ejected me from the platform, and at the same time gave orders to the driver to go on. I have, therefore, been compelled to walk the distance in the mud and rain, and have also been delayed in my attendance upon the Court.