Has arrived in Scotland. Recently witnessed a large comet. Thanks JH and family for hospitality at Slough.

Encloses list [extant] of specimens prepared for his rejected paper, with note against each whether sent or not: 'Ulva fusca', 'U. purpurascens', 'U. rubens', 'U. rubra', 'Fucus concatenatus', 'F. faniculaceus', 'F. abrotanifolius', 'F. fibrosus', 'F. tamariscifolia', 'F. linearis', 'F. crispatus', 'F. bifidus', 'F. mutlifidus', 'F. obtusus', 'F. [filiminus]', 'F. cartilagineus', 'F. confervoides', 'F. capillaris', 'Conferva furriculacea', 'C. nigra', 'C. setacea', 'C. elongata', 'C. rubra', 'C. pellucida', 'C. nigresscens', C. fuccides', and 'C. pararitica'.

Weather lore: received "infallible prelude" of an approaching storm yesterday by rooks collecting in a small compass on the ground before going to roost: "their appearance between 4 & 5 yesterday afternoon was almost terrible, at about 200 yards from the house", similarly their collecting on the highest trees before going to roost is a certain predicition of a fair day.