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Discusses EM’s book [Die Dolomit-Riffe von Südtirol und Venetien (1878–9)]. Pleased by EM’s views of geological chronology based on evolution. Thinks distribution of land and sea formerly very different. New genera and families may have been developed on isolated tracks and migrated.
Cactus and Cycas seedlings: observations and queries.
Working hard on plant movements.
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Comments on achenia of Pumilio argyrolepis.
Sends letter and seeds from [F. J. Cohn].
Is working too hard.
Feels WHK’s views on the origin of tumbling in pigeons are very likely correct.
Pleased with CD’s praise of his work. He agrees with CD that intermediate marine fossils are rare in the same bed. The difficulty is overcome by extensive search of "isotopic" fauna in different beds of the same "isotopic" region.
Suggests sensitive plants that close at night would be protected from nocturnal-feeding snails. JIR’s brother in India says snails occur there in abundance.
Sends article on "Evolution" [Encyclopaedia Britannica, 9th ed.]. CD will be interested in Lamarck’s opinions in 1794.
Is working on crayfish and their distribution.
Report of an "eight legged horse" considered to be an example of reversion.
JDH’s scheme for lowering F.R.S. fees by creating a fund through membership subscription.
No summary available.