More on the "terrible problem" of natural selection and sterility. CD’s reasons for disagreeing with ARW. CD analyses and answers ARW in detail in defence of his conclusion that sterility cannot be increased through natural selection.
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More on the "terrible problem" of natural selection and sterility. CD’s reasons for disagreeing with ARW. CD analyses and answers ARW in detail in defence of his conclusion that sterility cannot be increased through natural selection.
Warns ARW of dubious character of list of European alpine genera and species in volcanoes of Hawaii. Problems of geographical distribution in oceanic islands.
Admires ARW’s "Theory of birds’ nests" [J. Travel & Nat. Hist. 1 (1868): 73].
Discusses their respective views on birds’ nests, sexual selection, and protection.
Asks why, if brilliant colours of female butterflies are result of protective mimicry, do not males become equally brilliant? CD believes variation in females alone accounts for it, rather than protection.
More on CD’s objections to ARW’s views on protection and natural selection.
Sexual selection.
Criticism of ARW for too little esteem of the role of sexual selection as agent in giving colour.
Response to other topics.
Is glad FM approves of a translation of Für Darwin.
Hopes FM will think well of Pangenesis.
Sexual differences in insect auditory and stridulating organs.
Read FM’s paper on Balanus with great interest ["On Balanus armatus", Ann. & Mag. Nat. Hist. 4th ser. 1 (1868): 393–412].
Thanks for interesting letter. ‘How very curious the case of the bright-coloured birds which conceal themselves in holes!’
FM’s additions for English edition [1869] of Für Darwin.
Dimorphic plants.
The problem of dimorphic plants and their fertility.
Thanks for answers to questions, but declines loan of specimens.
CD’s oscillating views relating to protection and sexual selection.
On their differences concerning sexual selection and protection.
Sexual selection, protection.
Delay in translating Für Darwin.
Comments on plan to repeat CD’s experiments on illegitimate offspring.
FM’s observations on stridulation.
Response to letter about dedication of Malay Archipelago and several scientific papers.
Changes in 5th ed. of Origin.
Now feels individual differences of paramount importance. Fleeming Jenkin has convinced him about "single variations".
CD expressed himself badly. F. Jenkin’s argument was against single variations ever being perpetuated.
Reception of ARW’s book, Malay Archipelago.
Translation of Für Darwin has been published [Facts and arguments for Darwin (1869)].
Discusses dimorphic plants, commenting on FM’s observations on Oxalis.
Is greatly interested in Eschscholzia, which seems somewhat more self-sterile in Brazil than in England.
Thinks FM’s grass is "most wonderful".
On English edition of Für Darwin; CD’s gratitude and admiration.
Comments on Wallace’s Malay Archipelago.