Frederick Douglass, in a private letter just received, dated Rochester, May 28, says: "There can be no freedom for the freedmen worthy of the name without the ballot. Contend for this and you contend for that alone which can make the country safe and the emancipation of the slave complete. I greatly desired to have been present at the late annual meeting of the American A.S. Society in New York, but labors elsewhere in the same cause compelled me to forego the pleasure and the privilege of hearing the noble and wise words uttered on that occasion. I have, however, read them in THE STANDARD."