No summary available.
Showing 81–100 of 260 items
No summary available.
Suggests there is a direct relation between temperature and abundance of plant species.
Discusses the connection between climate and vegetation. Believes that an equable climate is unfavourable to increase of species either by importation or modification of existing forms; illustrates his view with reference to particular floras. Hopes to acquire facts to support CD’s idea that isolation is important in producing new forms. Considers the floras of islands some of which do have distinctive species but others of which do not. Agrees that the wide ranges of cryptogams are a consequence of their means of dispersal. Asks for references to works on original creation and species mutability in order to get the best notions of "the (mad) theories of some men from Lamarck’s twaddle upwards".
Sends notes on Infusoria for Ehrenberg.
Comments on distribution of species in natural orders that have local distributions. Intermediate forms between species of Lycopodium.
Differences in variability of species within a single genus. Further observations on Lycopodium.
Interested in Humboldt’s river with different floras on opposite banks, and other unexplained cases of very local distributions.
Would like to visit on the weekend of 7–8 December.
Differences in floras of St Helena and Ascension.
No summary available.
Thanks for pleasant stay at Down.
Remarks on boulders found on southern islands.
Describes the alpine character of the Andes flora and relays information on other mountain floras.
Quotes instances of seeds that retained their vitality after being carried by ocean currents.
Sends notes on the comparative floras of New Zealand, Australia, and west coast of South America.
Encloses a copy of part of a letter from George Gardner in Ceylon concerning the European character of the mountain flora.
No summary available.
Thanks for CD’s comments on "sketch".
Lengthy discussion of geographical distribution and island floras.
Has been "delighted with" [Robert Chambers’] Vestiges [of creation (1844)].
Galapagos flora work goes on well.
No summary available.
This is an unsigned letter from Hooker to Bentham.
No summary available.
A three page letter to Bentham from Joseph Hooker.
Short two page letter from Hooker to Bentham.
Sends comparison of the floras of Society and Sandwich Islands.
No summary available.
Previous letter [missing] on Edinburgh position was ill-tempered. Friends assure him that he ought to be thankful for opportunity to try for professorship.
Reports meeting with Humboldt in Paris.
No summary available.
No summary available.