Dined at Roehampton yesterday with Farquhar. Mrs. Norton and Mrs. Blackwood and Theodore Hook dined there among others. After dinner he displayed his extraordinary talent of improvisation, which I had never heard but once before, and then he happened not to be in the vein. Last night he was very brilliant. Each lady gave him a subject, such as the ‘Goodwood Cup,’ the ‘Tithe Bill;’ one ‘could not think of anything,’ when he dashed off and sang stanzas innumerable, very droll, with ingenious rhymes and excellent hits, ‘his eye begetting occasion for his excellent wit,’ for at every word of interruption or admiration, every look or motion, he indulged in a digression, always coming back to one of the themes imposed upon him. It is a tour de force, in which I believe he stands alone, and it is certainly wonderfully well worth hearing and uncommonly amusing.