Apologises for delay in responding to Smith; he has been in a state of "unaccountable indolence & debility" with his only exertion being the publication of his "Monandrian Plants"; retierates principal point of the work, being to ascertain precise limits of genera 'Maranta', 'Phrynium', and 'Thalia', and settling points on 'Castus'. Received letter from Thomas William Coke; was anxious to hear of Coke's feverish attack. Hopes to meet Smith again soon.