MADAM, --Having written a short account of some incidents connected with my life, I return my grateful and sincere thanks to you for the great interest you have taken in my education, by which means I have been brought from African darkness to a knowledge of the comforts of a civilized and social life. Hitherto, for these ten years, I have experienced your benevolent care and tuition, and have been elevated far above many of my poor countrymen, whose...