Comments on TVW’s book [On the variation of species with special reference to the Insecta (1856)].
On TVW’s Unitarianism. Predicts TVW will fall further away from Christianity.
[Letter sent by TVW to Charles Lyell.]
Showing 1–10 of 10 items
The Charles Darwin Collection
The Darwin Correspondence Project is publishing letters written by and to the naturalist Charles Darwin (1809–1882). Complete transcripts of letters are being made available through the Project’s website (www.darwinproject.ac.uk) after publication in the ongoing print edition of The Correspondence of Charles Darwin (Cambridge University Press 1985–). Metadata and summaries of all known letters (c. 15,000) appear in Ɛpsilon, and the full texts of available letters can also be searched, with links to the full texts.
Comments on TVW’s book [On the variation of species with special reference to the Insecta (1856)].
On TVW’s Unitarianism. Predicts TVW will fall further away from Christianity.
[Letter sent by TVW to Charles Lyell.]
Hybrid insects.
Description of the Salvages.
Variability of "transition groups" of insects; relation of variability to ranges of insects. The variability of wings, even within species. Reduction of flying ability on isolated islands.
Forbes’s "Atlantis" theory and insect fauna of the Atlantic islands, considered with regard to insect migrations.
Sends Madeira specimens, including frogs recently introduced into the island, and flourishing.
Madeiran insects. Regards the "Atlantic province" as a centre of the Coleoptera.
On the relationship of the loss of the powers of flight [in Coleoptera] to increase of bulk.
Informs CD that the "dishonest mollusks" were collected in May 1855 in Porto Santo. Describes some Madeira species. Though believing in "species" more and more, these may be "mere insular modifications".
Variability of certain features within insect genera.
Lists groups of insects absent from the Madeiran fauna.
He was unaware that varieties occurred proportionately more in large genera.
Recommends a work [Leonard Gyllenhaal, Insecta Suecica, 4 vols. (1808–27)] for tabulating varieties.
Lists "close geographical representatives of Europaean species" based on the species numbers [in T. V. Wollaston, Catalogue of the coleopterous insects of Madeira (1857)].
Has received a batch of S. African specimens which contain many of the Atlantic genera he found in Madeira and the Canaries.