202 LIST OF LITERATURE 



56. Willis, J. C. The Flora of Ritigala, a study in Endemism. Ann. 



Perad. iii, 1906, p. 271. 



57. Hill-top Floras of Ceylon. Ann. Perad. iv, 1907, p. 131. 



58. The Flora of Naminakuli-Kanda. Ann. Perad. v, 1911, p. 217. 



59. The Endemic Flora of Ceylon.... Phil. Trans. B, ccvi, 



1915, p. 307, and correction in Proc. R. S. B, lxxxix, 1916. 



60. The Evolution of Species in Ceylon. Ann. Bot.xx^x, 1916, p. 1. 



61. Distribution of Species in New Zealand. Ann. Bot. xxx, 



1916, p. 437. 



62. Further Evidence for Age and Area. Ann. Bot. xxxi, 1917, 



p. 327. 



63. Relative Age of Endemic Species. Ann. Bot. xxxi, 1917, 



p. 189. 



64. The sources and distribution of the New Zealand flora. 



Ann. Bot. xxxii, 1918, p. 339. 



65. Endemic Genera in relation to others. Ann. Bot. xxxv, 



1921, p. 493. 



66. Age and Area. Cambridge, 1922. 



67. Age and Area; a reply to criticism. Ann. Bot. xxxvii, 



1923. 



68. Some further Studies in Endemism. Proc. Linn. Soc. 



cxLviii, 1935-6, Pt. 2, 27 March 1936, p. 86. 



69. Some Conceptions about Geographical Distribution and 



Origin of Species. Proc. Linn. Soc. cl, 1937-8, Pt. 3, 24 June 

 1938, p. 162. 



70. Some evidence against the theory of Natural Selection of 



Infinitesimal Variations. Ann. Perad. iv, 1907, p. 1. 



71. Further evidence. Ann. Perad. iv, 1907, p. 17. 



72. The Geographical Distribution of the Dilleniaceac.as 



illustrating... Mutation. Ann. Perad. iv, 1907, p. 69. 



73. Is the Theory of Natural Selection adequate? Nineteenth 



Century, xcii, October 1922, p. 615. 



74. The Origin of Species by large... mutations, and by Guppy's 



method of Differentiation. Ann. Bot. xxxvii, 1923, p. 605. 



75. Yule, G. Udny. In Phil. Trans. B, ccxiii, 1924, p. 21. 



76. Yule, G. Udny and Willis, J. C. Some statistics of Evolution 



and Geographical Distribution in Plants and Animals, and 

 their Significance. Nature, cix, 9 February 1922, p. 177. 



77. Hutchinson, J. B. Note on a Policy of Introduction of new 



varieties of Cotton in Africa. Empire Cotton Growing Review, 

 XV, 1938, p. 283. 



78. Some problems in Genetics, whose Solution would help the 



Plant Breeders. Empire Cotton Growing Review, xv, 1938, 

 p. 286. 



79. The third Conference of workers on Cotton-growing 



problems. Empire Cotton Growing Review, xvi, 1939, p. 1. 

 Cf. p. 4 for "mixing". And see various papers in the same 

 journal for the two preceding years. 



