Animal Life and Intelligence

by C. Lloyd Morgan

[EA]See "Animals and Plants under Domestication," vol. ii. p. 40, from which illustrations are taken.

[EB]"Evolution and Disease," p. 169.

[EC]"Animals and Plants under Domestication," vol. ii. p. 8.

[ED]"Darwinism," p. 107.

[EE]Darwin, "Animals and Plants under Domestication," vol. ii. pp. 17, 18.

[EF]"Animals and Plants under Domestication," vol. ii. p. 201.

[EG]Ibid. p. 282. The phenomena of the seasonal dimorphism of butterflies and moths show that changes of temperature (and perhaps moisture, etc.) determine very striking differences in these insects.

[EH]"Animals and Plants under Domestication," vol. ii. p. 244.

[EI]"Darwinism," p. 293.

[EJ]"Evolution of Sex," p. 22.