Thanks OH for his book [see 9876]; agrees that the sudden appearance of many dicotyledons in the Upper Chalk is a perplexing phenomenon for the evolutionist.
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Thanks OH for his book [see 9876]; agrees that the sudden appearance of many dicotyledons in the Upper Chalk is a perplexing phenomenon for the evolutionist.
Comments on Insectivorous plants.
Describes his own work on fossil flora of Eastern Siberia.
Discusses genus Ginkgo.
Comments on his Flora fossilis Arctica [vol. 3 (1875)]. Discusses successive appearance of plant families in geological periods. Relates plant development to rise of herbivorous mammals.
Comments on death of Charles Lyell.
Discusses his work [Flora fossilis Arctica, vol. 4, pt 1 (1876)].
Sends copy of [Fossile Pflanzen von Sumatra (1874)]. Comments on climate in Tertiary period, especially on Sumatra.
Comments on theory of Thomas Belt concerning climatic change in ice age.