"During the last few days I have in obedience to your request been taking notice of the exodus as it may be studied here at the headquarters for relief among the refugees in Kansas. This is the third visit your correspondent has made to the ’promised land’ of the dusky hosts, who fleeing from persecution and wrongs, have swarmed within its borders to the number of 25,000. In a letter written here in December last the number then within the State was estimated about 15,000, and since that date at least 12,000 more have come. In the ’barracks’ to-day I found what seemed to be the same one hundred who crowded about the stove that cold December day; but they were not the same of course, but their places have been filled many times since with other hundreds, who have found their first welcome to Kansas in the rest, food and warmth, which the charity of the North has provided here. So efficient have the plan of relief and the machinery of distribution been made, that of the thousands who have passed through here, none have remained as a burden of expense to the Association more than four or five days before places were found where their own labor could furnish them support. ’If that pure statesman of Indiana, (Mr. Voorhees) whose great heart was so filled with solicitude for the welfare of his colored brethren, that he asked Congress to appropriate thousands of dollars to ascertain why they moved from one State to another will come here,—he will be rewarded with such a flood of light on the question as could never penetrate the recesses of his committee-room in Washington. He need hardly propound an inquiry; he had, indeed, best not let his great presence be known,—for in the presence of ’Democracy’ the negro has learned to keep silence. But in search of the truth, let him go to the file of over 3,000 letters in the Governor’s office from negroes in the South, and read in them the homely but truthful tales of suffering, oppression and wrongs. Let him note how real is their complaint, but how modest the boon they ask; for, in different words,—sometimes in quaint and often in awkward phrases, the questions are always the same,—’Can we be free? Can we have work? And can we have our rights in Kansas?’ Let him go next to the 'barracks,’ and watch the tired, ragged, hungry, scared-looking negroes as they come by the dozens on every train. If he is not prompted by shame, then from caution necessary to the success of his errand, let him here conceal the fact that he is a ’Democrat;’ for these half-famished and terrified negroes have been fleeing from Democrats in the South, and in their ignorance they may not be able to comprehend the nice distinction between a northern and a southern Democrat. If he will be content simply to listen as they talk among themselves, he will soon learn much that the laborious cross-examination of witnesses has failed to teach him. He may take note of the fact that fleeing from robbery,