108 EVOLUTION OF THE HUMAN EYE 



25. Worth: Squint: Its Causes, Pathology and Treatment, London, 1903. 



26. Seef elder: Arch. f. Ophth., 1909, Ixx, i, 39. 



27. Hess, C., and Heine, L.: Ibid., vol. xlvi, 2, p. 243; also Ophth. 

 Review, 1898, xvii, 253. 



28. Barrett, J. W.: Ophth. Review, 1898, xvii, 255. 



29. Beer, Th.: Wien. klin. Wchnschr., 1898; also Ophth. Review, 1898, 

 xvii, 272. 



30. Smith, Priestley: Ophth. Review, 1898, xvii, 287. 



31. Salzmann, M.: The Anatomy and Histology of the Human Eyeball. 

 Translated by Dr. E. V. L. Brown, Chicago, 1912. 



32. Fuchs, E.: Arch. f. Ophth., 1918, xcv, 4. 



33. Donders: Accommodation and Refraction of the Eye, London, 1866. 



34. Iwanoff : Arch. f. Ophth., 1869, vol. xiv, 3, 284. 



35. Dub, B.: Ibid., vol. xxxvii, 4, p. 26. 



36. Weiss: Anatom. Hefte, 1897, vol. viii. 



37. Lang, W., and Barrett: Roy. Lond. Ophth. Hosp. Rep., 1886, xi, 103. 



38. Graber: Grundinien zur Erforschung des Helligkeits u. Farbensinnes 

 der Thiere Prag., 1884. 



39. Kalischer: Arch. f. Anat., 1909, p. 316. 



40. Smith, Miss E. M.: British Jour, of Psychol., 1912, v, 119. 



41. Kinnaman: Am. Jour, of Psychol., 1902, xviii, 173. 



42. Dahl: Scrapbook, February, 1907. 



43. Hess: Vergleichende Physiologic des Gesichtsinnes, Jena, 1912. 



44. Allen, Grant: The Color Sense, its Origin and Development, London, 

 1879. 



45. Wallace, Alfred Russell: Darwinism, 1889. 



46. Darwin, Ch.: Descent of Man, London, 1882, 2d edit. 



47. Weissman, A. : Darwin and Modern Science: The Selection Theory, 

 1909. 



48. Owen, Sir R. : On the Anatomy of Vertebrates, 1868, vol. iii. 



49. Bland-Sutton, Sir J.: Lancet, October, 1919, p. 673. 



50. Motais: Encyclopedic francaise d'Ophtalmologie, ii, 665. 



51. Whitwall, S. E. : Jour, of Anat. and Physiol., vol. xlvi. 



52. Miiller, H.: Siebold u. Kolliker's Zeitschrift, 1858, p. 541. 



53. Turner, Sir W.: Natural History Review, 1862. 



54. Crotti, Andre: Thyroid and Thymus, 1918. 



55. Moore, Foster: Lancet, October 20, 1920. 



