161.] [Footnote 19: Mrs.Howard.] [Footnote 20: Sir Robert Walpole.] [Footnote 21: An allusion to "The Beggar's Opera," which Gay was then writing.] [Footnote 22: Printed for the first and only time in "An Account of the Life and Writings of the Author," in _Plays Written by Mr.John Gay_, 1760.].