Supports CD’s theory but doubts that butterfly life-cycle is consistent with it. Metamorphosis of butterflies is not comparable to that of other insects.
Comments on butterfly fertilisation of flowers.
Showing 41–47 of 47 items
Supports CD’s theory but doubts that butterfly life-cycle is consistent with it. Metamorphosis of butterflies is not comparable to that of other insects.
Comments on butterfly fertilisation of flowers.
Intends to get his ideas on the "wearing out" of varieties printed.
This year’s crosses were failures.
German edition of Erasmus Darwin will not appear until next year.
Thanks CD for noticing some difficulties in his hypothesis. Concedes that there is no proof that higher plants are more intolerant of carbon dioxide than lower plants. Argues that the main difference between the lowlands and the high mountains in Palaeozoic times would be the much greater climatic fluctuations that would occur on the mountains. Discusses carbon dioxide diffusion in the Palaeozoic atmosphere. Thinks that the large number of species and genera peculiar to high mountains favours the assumption that "their diffusion must date from a geologically remote period" [see ML 2: 20–2].
Congratulations on Erasmus Darwin; likes CD’s part better than Ernst Krause’s.
Received false notice of Asa Gray’s death.
Gray and JDH engaged in comparing widely separated but floristically similar regions.
Encloses a report on JT’s potato varieties by William Meredith, one of the many individuals in the country who are growing them.
Sends some doggerel verse about a literary dandy who is critical of Darwin and Spencer and approves of Ruskin.