There are so many doubtful points on the problems relating to sterility that they will never agree.
Showing 81–100 of 100 items
There are so many doubtful points on the problems relating to sterility that they will never agree.
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.
The problem of dimorphic plants and their fertility.
CD’s oscillating views relating to protection and sexual selection.
On their differences concerning sexual selection and protection.
Sexual selection, protection.
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.
Comments on Wallace’s Malay Archipelago.
Hopes ARW has not "murdered too completely your own and my child" [natural selection] in his Quarterly Review article ["Sir Charles Lyell on geological climates and the Origin", 126 (1869): 359–94] on Lyell’s Principles [10th ed.].
CD is attributing more significance to useless variability in new [5th] edition of Origin.
ARW’s review of 10th ed. of Lyell’s Principles [see 6684] is admirable.
But he differs "grievously" with ARW on man. CD sees no necessity for an additional and proximate cause.
On butterfly scales: there are many secondary characters which baffle conjecture.
Was forced to make additions to Origin as short as possible.
Anticipates that all their differences are fated to find expression in projected book on man.
Offers his early MS with useful references related to the distribution of animals. Hopes ARW’s book will not be "little".
Further comments on arrangements for German translation of their joint paper.
Will call on Wallace tomorrow (Saturday) at 10.