Discusses concept of intelligence in his Earthworms manuscript.
Remarks on GJR’s work on echinoderms.
Comments on Wilhelm Roux [Der Kampf der Theile im Organismus (1881)].
Discusses animal instincts, citing Fabre’s description of sand-wasps.
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Discusses concept of intelligence in his Earthworms manuscript.
Remarks on GJR’s work on echinoderms.
Comments on Wilhelm Roux [Der Kampf der Theile im Organismus (1881)].
Discusses animal instincts, citing Fabre’s description of sand-wasps.
Looks forward to reading CD’s Earthworms.
Agrees that habits of sand-wasp are determined by natural selection.
Experiment of exposing plants to flashing light gives uncertain result.
Discusses GJR’s experiments on heliotropism in plants; views of Philippe van Tieghem and Julius von Wiesner. Describes his own experiments.
Mentions his letter on vivisection [to Frithiof Holmgren, see 13115] in the Times [18 Apr 1881].
Only more sensitive seedlings respond to flashing light.
CD’s letter to Times ["On vivisection", 22 Apr 1881] in every way admirable.
GJR to be Zoological Secretary of Linnean Society.
Has decided on arrangement of material for his books Animal intelligence [1882]
and Mental evolution in animals [1883].
Comments on GJR’s letter in the Times [25 Apr 1881] concerning vivisection. Mentions activity of anti-vivisectionists, G. R. Jesse and F. P. Cobbe.