As a physician, Doctor Keene thus accomplished his end,--the mental diversion of his late patient,--for in the midst of the mist Frowenfeld encountered and grappled a problem of human life in Creole type, the possible correlations of whose quantities we shall presently find him revolving in a studious and sympathetic mind, as the poet of to-day ponders the "Flower in the crannied wall." The quantities in that problem were the ancestral--the maternal--roots of those two rival and hostile families whose descendants--some brave, others fair--we find unwittingly thrown together at the ball, and with whom we are shortly to have the honor of an unmasked acquaintance..