Sends specimens of 'Lichen burgessii'. Not convinced that the "horse-hair insect" is 'Gordius aquaticus', though it may be of that genus; observations. Whilst botanising at Solway Firth found 'Fucus pygmaeus' Lightfoot above the high water market, asks whether it is a 'Lichen'. 'Sampire' common on rocks and 'Alisma ranunculoides' and 'Sison verticellatum' in every meadow. Mineralogy of country between rivers Nith and Orr; granite unfavourable to growth of lichens and other cryptogamia. Curious effect of a great storm in Scotland and England on the tide. Account of a meteor. Account of his time at Leadhills, home of Lord Hopeton, the highest inhabited ground in Britain. Encloses oak leaf with possible new 'Lichen' growing on it, similar to 'Byssus aurea'; observations. Mr Stuart is publishing the "Pentatench" in Gaelic.