GrayA. A., Journ. Anat. and Phys., 1900, xxxiv, 324; idem, The Labyrinth of Animals. Retzius, Das Gehörorgan der Wirbelthiere. R. H. Burne, The Comparative Anatomy of the Internal Ear in Vertebrates, Science Progress, 1912, 574.
3.
WilkinsonG. and GrayA. A., The Mechanism of the Cochlea.
4.
5.
KeithArthur Sir, Human Embryology and Morphology. G. L. Streeter, Amer. Journ. Anat., 1907, vi, 139; 1907, vii, 337. Robert Howden (Text-books of Anatomy, Cunningham, Gray). Ida Mann, The Development of the Human Eye, 1928.
6.
7.
KeithArthurSir, The Antiquity of Man. Frederick Tilney, The Brain from Ape to Man.
8.
9.
Pavlov, Conditioned Reflexes. Lloyd Morgan, Emergent Evolution. Varenderek, The Evolution of the Conscious Faculties. Elliot Smith, The Evolution of Man. Bergson, Creative Evolution. MacCabe, The Evolution of Mind. Sir E. Tylep, Primitive Culture. T. H. Morgan, The Physical Basis of Heredity.