Raises two points on CD’s view, in Descent [2: 229], on how aquatic birds acquire white plumage.
Also remarks on effect of will in certain human modifications,
on colour-blindness in his children,
and on ability to move his ears.
Raises two points on CD’s view, in Descent [2: 229], on how aquatic birds acquire white plumage.
Also remarks on effect of will in certain human modifications,
on colour-blindness in his children,
and on ability to move his ears.
Thanks BvC for the present of his book, Sittlichkeit und Darwinismus.
Comments on Descent.
Reports a case of protective coloration of bugs on Tilia
and observations on frogs fighting [see Descent, 2d ed., pp. 281, 350].
Encloses drawings of chicken feet.
Has had Hinrich Nitsche’s pointed ear photographed. Nitsche also has photographed the ear of a foetal orang. [See Descent 1: 21–3.]
Gratified that CD approves his analysis of CD’s views of moral sense. Does not think there is a fundamental difference between J. S. Mill (Utilitarianism [1863], p. 45) and CD.
His view of those who object to CD’s "new doctrine of the moral sense".
On Hottentots’ blushing.
Gives case of a baboon’s revenge. [See Descent, 2d ed. (1874), p. 69.]
Man’s spiritual life separates him from other animals.
Why are moths attracted, often fatally, to lights?
Thanks for copy of Descent.