INDEX 



LaPlace's theory, 151. 

 Leibnitz, and evolution, 13. 

 Life from other planets, 162. 

 Life in the past, 149. 

 Life, its nature, 247. 

 Linnaean Society and evolution, 



40. 



Linnaeus and fixed species, 15. 

 Locust's song, 135. 

 Lucretius and evolution, 10. 

 Lung-fish, 176. 

 Lyell's Geology, 26. 



M 



Male birds brighter, 131. 

 Male insects sing, 134. 

 Malthus and population, 35. 

 Mamma, significance of, 211. 

 Mammals, egg-laying, 208. 



how developed, 192. 

 Man and God's image, 288. 



early, and horse, 232. 



growing better, 255. 

 Man's ancestry, 230. 



future evolution, 249. 

 Mating and song, 133. 

 Mating antics, 136. 

 Meaning of Genesis, 284. 

 Megatherium and sloth, 29. 

 Mesozoic age, 178. 

 Michael Angelo, Judgment, 



289. 



Migration of birds, 103. 

 Missing link, 187. 

 Miz-pah, 283. 

 Modern teachers of biology, 



291. 

 Mongolian idiot, 265. 



Mosquito's bite, 97. 

 Mosquito's mouth, 96. 

 Mother-love, 217. 

 Multiplication and evolution, 



54- 

 Mutation and DeVries, 246. 



N 



Nature of life, 247. 

 Nature of milk, 214. 

 Natural selection explained, 45. 



in brief, 36. 



Nebular hypothesis, 152. 

 Neck of horse, 229. 

 Neo-Darwinians, 237. 

 Nests for warm eggs, 101. 

 Number and position of 

 breasts, 215. 



Odor as protection, 117. 

 Opossum playing dead, 107. 

 Origin of birds, 181. 



feathers, 102. 



flight, 122. 



hair, 102. 



life, 159. 



lungs, 177. 



milk glands, 212. 



placenta, 210. 



variations:, 50. 

 "Origin of Species" published, 



41. 



Orthogenesis and Eimer, 243. 

 Oxford meeting of British As- 

 sociation, 41. 



