On problem of sterility, CD cannot persuade himself that it has been gained by natural selection.
On sexual selection and minute variations, he tends to agree with ARW. Sends George Darwin’s notes on ARW’s argument.
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On problem of sterility, CD cannot persuade himself that it has been gained by natural selection.
On sexual selection and minute variations, he tends to agree with ARW. Sends George Darwin’s notes on ARW’s argument.
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".