A cold, smoke fog early, but it afterwards cleared though still freezing. A leisure day which I spent partly in writing up this Diary, occasionally falling into arrears, and partly in my numismatic studies. These are a pleasant relaxation from other cares. A long walk and a quiet evening. Read Vanity Fair to the family. On the whole a very masterly sketch of the follies and vices and foibles and virtues of London society. The characters are sharply defined, and the satire spread almost equally over all.