Come, then, our European brother, and enjoy with us every privilege of an American citizen. The altar of freedom is consecrated by the sacrament of our commingled blood. Countrymen of Lafayette and Montgomery, of Steuben and DeKalb, of Koscinsko and Pulaski! you are fighting, like them, in the same great cause, under the same banner, and for the same glorious Union, and, like them, you will reap an immortality of glory, and the gratitude of our country and of mankind. As century shall follow century, in marking this crisis of human destiny, history will record the stupendous fact, that the blood of all Europe commingled freely with our own in the mighty contest, the pledges of the freedom and brotherhood of man! We have seen that the Homestead bill was of Union origin, opposed by Mr. Calhoun and the pro-slavery party. We have seen that the bill was vetoed by Mr. Buchanan, quoting the opposing argument of a traitor member of his Cabinet, now in the rebel army. The vote in the Senate after the veto, was, yeas 28 (not two thirds), and nays 18. (Sen. Journal, 757, June 23, 1860.) Of the yeas, all but three were from the free States; and of the nays, _all_ were from the slave States. The opposition, then, as foreshadowed by Mr. Calhoun in 1836, was _exclusively sectional_ and pro-slavery. As Mr. Buchanan changed his policy as to Kansas upon the threats of the secession leaders in 1857, so he sacrificed upon their mandate the Homestead bill in 1860. Most of the eighteen Southern Senators who voted against this bill, are now in the rebel service. Among these eighteen nays, are Jefferson Davis, Bragg, Mason, Hunter, Mallory, Chesnut, Yulee, Wigfall, Fitzpatrick, Iveson, Johnson of Arkansas, Hemphill, and Sebastian. Now, then, when Irish and Germans in the South are asked to fight for the pro-slavery rebellion, let them remember that the secession leaders voted unanimously against the homestead bill, whilst the North then gave its entire vote in, favor of the measure, and have now made it the law of the land. As it is a blessed thing for the poor and landless to receive, substantially as a gift, a farm from the Government, where they and their children may till their own soil, and enjoy competence, freedom, and free schools, let them never forget, that this was the act of the North, and opposed by the South. If the rebels succeed, they will hold the public domain in their States and Territories for large plantations, to be cultivated by slaves, and sink their 'poor whites,' as nearly as practicable, to the level of their slaves, in accordance with their theory, that capital should own labor.