Another occasional letter from Mr. Cibber to Mr. Pope : Wherein the new hero's preferment to his throne, in the Dunciad, seems not to be accepted. And the author of that poem his more rightful claim to it, is asserted. With an expostulatory address to the Reverend Mr. W. W-n, author of the new preface, and adviser in the curious improvements of that satire. By Mr. Colley Cibber.