I FIRST became acquainted with LEWIS CLARKE in December, 1842. I well remember the deep impression made upon my mind on hearing his Narrative from his own lips. It gave me a new and more vivid impression of the wrongs of Slavery than I had ever before felt. Evidently a person of good native talents and of deep sensibilities, such a mind had been under the dark cloud of slavery for more than twenty-five years. Letters, reading, all the modes of thought awakened by them, had been utterly hid from his eyes; and yet his mind had evidently been active, and trains of thought were flowing through it...