Thanks for sending papers by Hermann Hoffmann.
Discusses spiral cells in Drosera and Pinguicula.
Showing 41–54 of 54 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.
Thanks for sending papers by Hermann Hoffmann.
Discusses spiral cells in Drosera and Pinguicula.
Sends CD his photo
and a copy of his address at Hartford ["Change by gradual modification not the universal law", Proc. Am. Assoc. Adv. Sci. (1874) pt 2: 7–12]. Does not believe his observations are unfavourable to natural selection but feels there are other factors involved in the origin of form.
Discusses further his work on colour and sex in plants; the linking of high colour and maleness.
Will send a different Utricularia species when the seedlings are better established.
Sends a copy of his book on Swiss ants [Les fourmis de la Suisse (1874)]. Notes points and passages that he thinks will interest CD.
CD’s Utricularia findings – bladders, subterranean roots, and insects decomposing in them – a grand discovery.
Discusses paper on volcanoes by J. W. Judd.
Comments on volcanoes of the S. American Cordillera.
Mentions paper by T. F. Jamieson ["Glacial period in N. Britain", Q. J. Geol. Soc. Lond. 30 (1874): 317–18].
Comments on digestive action of pepsin and hydrochloric acid.
Photograph of Rubens’ picture has not arrived.
Notes recent confirmation of CD’s views on subsidence in [island of] St Jago.
Describes Carboniferous strata discovered on Island of Mull by J. W. Judd. Contained evidence of Miocene sinking of volcanoes.
JL’s two articles in Nature ["Common wild flowers", 10 (1874): 402–6, 422–6].
Cautions against C. K. Sprengel’s notion of bees’ being deceived by nectarless nectary.
Colour of calyces.
Returns copy of Botanische Zeitung.
Responds to comments on Drosera.
Thanks AHF for his book on ants of Switzerland;
recommends reading Thomas Belt’s Naturalist in Nicaragua [1874].
Queries about species of Utricularia.
Information about various species of Utricularia.
The Aldrovanda has arrived. Has examined the leaves. It is an aquatic Dionaea which has acquired some structures identical to those of Utricularia!