Had been invited for to-day to dine with the Davys and a Roman party at the Rocher de Cancalle, but had already promised, at the request of Douglas, to dine with Henry and Lady Emily at the other side of Paris. The Miss Byrnes (the eldest of whom is heiress to 8000£ a year) took us. Poor Lady Emily sadly broken, and looking all but dead.  The day altogether an interesting one. We had music in the evening, and the Miss Byrnes played and sung. It is so long since I myself have sung, that my breath almost failed me with nervousness.