LIST OF LITERATURE 251 



(127) Willis, J. C. Distribution of Species in New Zealand. Ann. of Dot 



XXX, 1916, p. 437. 



(128) Relative Age of Endemic Species. Ibid, xxxi, 1917, p. 189. 



(129) Distribution of Plants of the Outlying Islands. Ibid, xxxi 



p. 327. ' 



(130) Further Evndence for Age and Area. Ibid, xxxi, p. 335. 



(131) Sources and Distribution of the New Zealand Flora. Ibid. 



xxxii, 1918, p. 339. 



(132) The Flora of Stewart Island. Ibid, xxxiii, 1919, p. 23. 



(133) The Floras ofthe Outlying Islands of New Zealand. Ibid. p. 479. 



(134) Plant Invasions of New Zealand.... /6trf. xxxiv, 1920, p. 471. 



(135) Endemic Genera of Plants. Ibid, xxxv, 1921, p. 493, 



(136) The Age and Area Hypothesis. Science, xlvii, 1918, p. 626. 



(137) Willis, J. C. and Burkill, I. H. The Flora of the Pollard Willows 



near Cambridge. Proc. Catub. Phil. Soc. viii, 1893. p. 82. 



(138) Willis, J. C. and Gardiner, J. Stanlev. The Botany ofthe Maldive 



Islands. Ann. Pcrad. i, 1901, p. 45. 



(139) Bews, J. W. Plant Succession and Plant Distribution in S. Africa. 



Ann. of Bat. xxxiv, 1920, p. 287. 



(140) — — Some general Principles of Plant Distribution, as illustrated by 



the S. African Flora. Ann. of Bat. xxxv, 1921, p. 1. 



(141) DE Vries, H. The present position of the Mutation Theory. Nature, 



CIV, 1919, p. 213. 



(142) Hooker, J. D. On Insular Floras. Journ. Bot. 1867, p. 23. 



(143) Hayward, I. and Druce, G. C. The Advenlive Flora of Ticeedside. 



Arbroath, 1919. 



(144) Lang, W. D. Old Age and Extinction in Fossils. Proc. Geol. Ass. 



XXX, 1919, p. 102. 



(145) Willis, J. C. and Yule, G. U. Some Statistics of Evolution and 



Geographical Distribution in Plants and Animals, and their 

 Significance. Xoture, 109, Feb. 9, 1922, p. 177. 



