Frederick Douglass has been for some time a prominent member of the abolition party. He is said to be an excellent speaker--can speak from a thorough personal experience--and has upon the audience, besides, the influence of a strong character and uncommon talents. In the book before us he has put into the story of his life the thoughts, the feelings, and the adventures that have been so affecting through the living voice; nor are they less so from the printed page. He has had the courage to name persons, times, and places, thus exposing himself to obvious danger, and setting the seal on his deep convictions as to the religious need of speaking the whole truth. Considered merely as a narrative, we have never read one more simple, true, coherent, and warm with genuine feeling. It is an excellent piece of writing, and on that score to be prized as a specimen of the powers of the black race, which prejudice persists in disputing. We prize highly all evidence of this kind, and it is becoming more abundant. The cross of the Legion of Honor has just been conferred in France on Dumas and Soulie, both celebrated in the paths of light literature. Dumas, whose father was a general in the French army, is a mulatto; Soulie, a quadroon. He went from New Orleans, where, though to the eye a white man, yet, as known to have African blood in his veins, he could never have enjoyed the privileges due to a human being. Leaving the land of freedom, he found himself free to develop the powers that God had given. Two wise and candid thinkers--the Scotchman Kinmont, prematurely lost to this country, of which he was so faithful and generous a student, and the late Dr. Channing,--both thought that the African race had in them a peculiar element, which, if it could be assimilated with those imported among us from Europe, would give to genius a development, and to the energies of character a balance and harmony, beyond what has been seen heretofore in the history of the world. Such an element is indicated in their lowest estate by a talent for melody, a ready skill at imitation and adaptation, an almost indestructible elasticity of nature. It is to be remarked in the writings both of Soulie and Dumas, full of faults, but glowing with plastic life and fertile in invention. The same torrid energy and saccharine fulness may be felt in the writings of this Douglass, though his life, being one of action or resistance, has been less favorable to _such_ powers than one of a more joyous flow might have been.