[11] E. Dieffenbach, _Travels in New Zealand_ (London, 1843), ii. 85 _sqq._; Horatio Hale, _United States Exploring Expedition, Ethnography and Philology_ (Philadelphia, 1846), pp. 146 _sqq._; Sir George Grey, _Polynesian Mythology_ (London, 1855), pp. 123 _sqq._, 136 _sqq._, 162 _sqq._, 202 _sqq._; E. Shortland, _Traditions and Superstitions of the New Zealanders_, Second Edition (London, 1856), pp. 1 _sqq._; R. Taylor, _Te Ika A Maui, or New Zealand and its Inhabitants_, Second Edition (London, 1870), pp. 26, 27, 289 _sqq._; John White, _The Ancient History of the Maori, his Mythology and Traditions_ (London, 1887-1889), ii. 176 _sqq._; Elsdon Best, "The Peopling of New Zealand," _Man_, xiv. (1914) pp. 73-76. The number of generations which have elapsed since the migration to New Zealand is variously estimated. Writing about the middle of the nineteenth century Shortland reckoned the number at about eighteen; Mr. Elsdon Best, writing in 1914, variously calculated it at about twenty-eight or twenty-nine (on p. 73) and from eighteen to twenty-eight (on p. 74). [12] E. Shortland, _Traditions and Superstitions of the New Zealanders_, p. 33. [13] H. Hale, _Ethnography and Philology of the U.S. Exploring Expedition_, pp. 119 _sq._; E. Dieffenbach, _Travels in New Zealand_ (London, 1843), ii. 85 _sqq._; E. Shortland, _Traditions and Superstitions of the New Zealanders_, pp. 33 _sqq._; A. S. Thomson, _The Story of New Zealand_ (London, 1859), i. 57 _sqq._; R. Taylor, _Te Ika A Maui_, p. 26; E. Tregear, _Maori-Polynesian Comparative Dictionary_ (Wellington, N.Z., 1891), pp. 56 _sqq._, _s.v._ "Hawaiki"; A. C. Haddon, _The Wanderings of Peoples_ (Cambridge, 1919), p. 36. Of these writers, Dieffenbach, Shortland, and Taylor decide in favour of Hawaii; Thomson, Hale, and Haddon prefer Savaii; Tregear seems to leave the question open, pointing out that "the inhabitants of those islands themselves believe in another Hawaiki, neither in Samoa nor Hawaii."