Though born a slave in the State of Maryland, Henry Highland Garnett is the son of an African chief, stolen from the coast of his native land. His father's family were all held as slaves till 1822, when they escaped to the north. In 1835, he became a member of Canaan Academy, New Hampshire. Three months after entering the school, it was broken up by a mob, who destroyed the building. Mr. Garnett afterwards entered Oneida Institute, New York, under the charge of that noble-hearted friend of man, Beriah Green, where he was treated with equality by the professors and his fellow-students. There he gained the reputation of a courteous and accomplished man, an able and eloquent debater, and a good writer. His first appearance as a public speaker was in 1837, in the city of New York, where his speech at once secured for him a standing among first-class orators. Mr. Garnett is in every sense of the term a progressive man. He is a strenuous advocate of freedom, temperance, education, and the religious, moral, and social elevation of his race. He is an acceptable preacher, evangelical in his profession. His discourses, though showing much thought and careful study, are delivered extemporaneously, and with good effect. Having complete command of his voice, he uses it with skill, never failing to fill the largest hall. One of the most noted addresses ever given by a colored man in this country was delivered by Mr. Garnett at the National Convention of Colored Americans, at Buffalo, New York, in 1843. None but those who heard that speech have the slightest idea of the tremendous influence which he exercised over the assembly. He spent some years over a church at Troy, and another at Geneva, New York, and in 1850 visited England, where he remained, lecturing, in different sections of the United Kingdom, upon American slavery, until 1852, we believe, when, being joined by his family, he went as a missionary to Jamaica. After spending three years among the people of that island, he returned to the United States, and is now settled over Shiloh Church, New York city. Mr. Garnett is about forty-five years of age, unadulterated in race, tall and commanding in appearance, has an eye that looks through you, and a clear, ringing voice. He has written considerably, and has edited one or two journals at different times, devoted to the elevation of his race. The following from his pen will give but a faint idea of Mr. Garnett's powers as a writer:--