We dined with Dr. Roget, the secretary of the Royal Society, where we met Sir Francis Staunton, a great Oriental scholar and traveler, Professor Royle, Dr. Boott, and two others whose names I forget. But best of all Dr. Boott brought me a letter from Dr. Torrey, dated December 25 (Christmas), and I soon contrived to get into a quiet corner to read it; right glad I was to hear from home once more; I will answer it to-morrow. We left very early, as Hooker was to go to Hampstead, where Sir Francis Palgrave resides. Joe and I walked with him, till he should find a stage; but as none overtook us and the night was fine we walked the whole way, three or four miles, and having left Sir William safe and sound, and seen Sir Francis Palgrave for a moment, the remainder of the family having retired to rest, Joe and I walked back again to town. I confess I am a little tired, and am quite willing to go to bed. A Dieu. Wednesday, January 23, 1839.--Breakfasted and dined with Mr. Bentham, and studied plants with him all day and a good portion of the evening, excepting an hour or so in the morning when we walked out, and Bentham took me through the splendid house of the Athenæum Club, and we also visited the National Gallery, and saw fine paintings in great numbers from almost every artist ancient or modern. It is very near my lodgings, and I intend to visit it again. Here are some of West’s original pictures, and likewise the paintings or sketches of Hogarth from which his well-known engravings were taken. They are much more expressive than the prints. E. would enjoy many of them very much, and especially some of Wilkie’s of the same kind. I am to take my breakfast in my lodgings to-morrow morning, which I have as yet done but once. I sent yesterday my letter of introduction to William Christy, who lives out of town, and received to-day a most polite invitation to dine with him to-morrow, and meet Hooker and Joe. Thursday.--Breakfast at home. Call with Joe Hooker on Bransby Cooper, and then on Sir Astley Cooper; pleasantly received, saw some very curious preparations; spent the morning with Bentham, and dined at Mr. Christy’s, Clapham Road, where I spent an agreeable evening. Returning, wrote a letter to Dr. Torrey to go by mail to-morrow to Bristol for the Great Western.