[135] W. Kochs, “Eine wichtige Veränderung, etc.,” Biol. Centralbl., p. 289, 1891.
[136] Davy, Philos. Transac. Roy. Soc. London, 1850, p. 437.
[137] Darwin, Descent of Man, 3rd ed., p. 208.
[138] Cl. Markham, Travels in India and Peru, London, 1869; Elisée Reclus, Géographie universelle, vol. viii., p. 630, Paris, 1883.
[139] Rosenberg, Malayshe Archip., Leipzig, 1878, Preface.
[140] Huxley, Evidence as to Man’s Place in Nature, London, 1863.
[141] Hettner, Zeits. Gesel. Erdk., vol. xxvi., 1891, p. 137.
[142] Proceedings Geogr. Soc. London, 1891, p. 34.
[143] For details see Bordier, Géogr. Médicale, Paris, 1883, with atlas.
[144] Bull. Géogr. histor. et descript., p. 53, Paris, 1889.