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Discusses error in CD’s calculation of natural increase of elephants.
Includes extract from Origin.
HCFJ’s review of the Origin was the wittiest and in some respects the best written.
Thanks him for his Electricity and magnetism [1873].
Hopes that Charles Lyell has enjoyed his excursion.
Observations on her pet pug.
Recipient is to stay with CD;
sender relates some observations of dogs and birds, to be passed on to CD.
Is trying to persuade "our friend" [T. H. Huxley?] to accept a gift.
Comments on SB’s book [The fair haven (1873)]. CD is struck by SB’s dramatic power – thinks he could write "a really good novel". Surprised at strength of case SB makes that Jesus did not die on the cross. SB’s identity will soon be universally known: Leslie Stephen knows he is the author.
Having now read Expression, WM repeats his criticism of "antithesis". Explains his theory of up-and-down-tending lines.
The impossibility of conceiving that the universe arose through chance is the chief argument for the existence of God, but CD has never been able to decide whether this is an argument of real value. Safest to believe that the subject is beyond man’s intellect, "but man can do his duty".
Comments on article ["Perception and instinct in lower animals", Nature 7 (1871): 377–8].
Explains his contention that "many of the most wonderful instincts have been acquired, independently of habit, through the preservation of useful variations of pre-existing instincts". Cites examples: sterile workers of several species of social insects have acquired different instincts; movements of tumbler pigeons. Speculates that "many instincts have originated from modification or variations in the brain".