Suffering from a nervous debility caused by overwork; fears he will be unable to take up invitation to Norfolk. Preparing to publish a memoir of Monandrian plants and would like Smith's opinion on his figures. Received letter from [Nathaniel] Wallich giving an account of his expedition to Nepal and Singapore, the diseases he suffered, and the "immense acquisitions" he has made, which form the most valuable collection of living plants the Liverpool Botanic Garden has ever received, including 'Scitamineae' roots which are already shooting thanks to being packed in moss; he did not have time to write to Smith. Rejoices with Smith on marriage of his "amiable niece".