175 Cf. Robertson, l.c.

176 See, for a brief resumûˋ of this subject, Morgan〙s Experimental Zoology, chap. xvi.

177 Amer. J. of Physiol., X, 1904.

178 C.R. CXXI, CXXII, 1895〓96.

179 Cf. Loeb, Science, May 14, 1915.

180 Cf. Baumann u. Roos, Vorkommen von Iod im ThierkûÑrper, Zeitschr. fû¥r Physiol. Chem. XXI, XXII, 1895, 6.

181 Le Nûˋo-Vitalisme, Rev. Scientifique, Mars 1911, p. 22 (of reprint).

182 La vie et la mort, p. 43, 1902.

183 Cf. Dendy, Evolutionary Biology, 1912, p. 408; Brit. Ass. Report (Portsmouth), 1911, p. 278.

184 Lucret. v, 877. 〜Lucretius nowhere seems to recognise the possibility of improvement or change of species by 〘natural selection〙; the animals remain as they were at the first, except that the weaker and more useless kinds have been crushed out. Hence he stands in marked contrast with modern evolutionists.〝 Kelsey〙s note, ad loc.