Part 1 — CHAPTER III. RACE AND HABITAT
Reading edition
37 : 6. Sir G. Archdall Reid, The Principles of Heredity, chaps. VII, VIII, IX.
37 : 17. Ripley discusses them in full in chap. VI.
37 : 20–38 : 2. W. Boyd Dawkins, Early Man in Britain, p. 233; Keane, Ethnology, pp. 110 seq.; Osborn, Men of the Old Stone Age, pp. 220, 479–486 seq.; Keith, Antiquity of Man, p. 16.
38 : 10. Ellsworth Huntington, 1, p. 83; Charles E. Woodruff, 1, pp. 85–86; also the Report of the Smithsonian Institution for 1891, which contains an article on “Isothermal Zones.”
38 : 17 seq. Ellsworth Huntington, 1, pp. 86 seq.
40 : 27. Ellsworth Huntington, 1, pp. 14, 27.
41 : 25–42. G. Retzius, On the So-called North European Race of Mankind, p. 300; and many other authorities.
43 : 23. Ripley, pp. 352 seq. and 470.
44 : 17. G. Elliot Smith, 1, p. 61; G. Sergi, 4.
44 : 26. Ripley, pp. 443 and 582–583.
45 : 2. Beddoe, 4, p. 270.