Congratulations on JDH’s safe return.
Henslow has sent CD’s S. American plants to JDH for examination.
Showing 61–80 of 155 items
Congratulations on JDH’s safe return.
Henslow has sent CD’s S. American plants to JDH for examination.
Thanks for use of CD’s collection.
Comments and queries on the botany of the Southern Hemisphere.
Looks forward to seeing CD’s Galapagos plants.
Thanks JDH for short sketch of botanical geography of Southern Hemisphere. Comments on his own S. American collections and observations; notes other Galapagos collections.
Henslow has sent him CD’s Galapagos plants along with Macrae’s. JDH impressed by the island endemism, which "overturns all our preconceived notions" on centres of radiation. Describes the extent, and the sharp demarcation at longitude 60° W, of the American and European Northern Hemisphere floras. CD’s plants among those he is using to do Antarctic flora. Drimys winteri shows a graded series of states down the length of the South American continent.
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".
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 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.
Island floras; relationships with mainland. Ranges of species in mundane genera.
Galapagos plants one-third done.
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.
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.
Answer to CD’s query on genera and species ranges.
Comments on typical forms.
Preparing first part of Galapagos plants for printing.
Thanks for information on printing charges
and for clarifying "typical forms".
In a few days CD will go away for six weeks.
Asks if J. E. Gray has returned [printing] estimates for Zoology.
Henslow has some Galapagos plants which he forgot to forward to JDH.
Encloses letter from Ehrenberg [758] about Infusoria.
Intends to visit Kew.
Health and weather permitting, CD proposes to visit Kew.