Longing for a letter from WK. Describes various excurions through Fife.
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Longing for a letter from WK. Describes various excurions through Fife.
Queries on ratios of species to genera on southern islands. CD’s observations on distribution of Galapagos organisms, and on S. American fossils, and facts he has gathered since, lead him to conclusion that species are not immutable; "it is like confessing a murder".
Responds to WK’s article ‘The latest Geological changes in the south of Scotland’ (Kemp 1843).
Describes the fire at the gas works in Cupar.
Has been on visit with Hugh Miller to Dura Den.
C. G. Ehrenberg would like some earth from Galapagos, Tierra del Fuego, and the Falklands; wishes to hunt for Infusoria.
Remarks on geographical divisions of the flora of the Southern Hemisphere.
JDH beginning Galapagos plants. Value of studying insular floras with respect to inquiries about adaptation of species.
Thanks for information for Ehrenberg.
Has got in a controversy about tar burning with a man from Musselburgh.
Island floras; relationships with mainland. Ranges of species in mundane genera.
Galapagos plants one-third done.
Has just completed Volcanic islands.
Sends queries on Galapagos flora in particular and island floras in general; also on relationship of wide-ranging species to wide-ranging genera.
Regrets the delay in sending copies of his paper.
Regrets the delay in sending copies of his paper.
Affinity of Galapagos with nearest Pacific islands. Relationship between ranges of species in time and space. Comparison of Malden Island and Galapagos plants. Affinities of Oceania plants with continental floras.
Thanks for information on Malden Island. Comments on its plants and their relationship to the Galapagos flora. Discusses the flora of Oceania. Gives his opinion on the extent of the uniformity in species and forms amongst South Sea Islands. Large genera are more widely diffused and have a larger proportion of species with wide ranges.
Seeks advice on expense of preparing plates [for Flora Antarctica].
Advice to JDH on problems of printing and publishing.
Remarks on differences of species between islets of Galapagos group.
Asks JDH to forward publishing information to J. E. Gray.
Has received JDH’s infusorial specimens for Ehrenberg.
Writes to correct a statement made in his 1837 paper "On the formation of mould" [Collected papers 1: 49–53]. He should have said that marl was put on the field 30 years ago, not 80. Observations made on a visit to the field showed that worms had undermined the marl spread on the field at a faster rate than previously reported.
Thanks for JDH’s interesting details about the Galapagos.
Clarification of CD’s query about the relationship between the range of a genus and the ranges of its constituent species.
Regularly attends Owen’s lectures. Owen at pains to show groups are not linked. Thus makes Lepidosiren appear fish-like.
GRW thinks embryology will become chief guide to insect classification. But contradictions between classification based on embryological and adult characters do occur.
Answer to CD’s query on genera and species ranges.
Comments on typical forms.
Preparing first part of Galapagos plants for printing.