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 which he was utterly unable to express. I well remember, too, the wave on wave of deep feeling excited in an audience of more than a thousand persons, at Hallowell, Me., as they listened to his story, and looked upon his energetic and manly countenance, and wondered if the dark cloud of slavery could cover up--hide from the world, and degrade to the condition of brutes--such immortal minds. His story, there and wherever since told, has aroused the most utter abhorrence of the Slave System.