INDEX 



Dornroschen, 23. 

 Duration of life, 366. 

 Dust, 229. 



Earthworms, 281. 

 Edwards, Jonathan, 257. 

 Eel-fare, 41. 

 Eggs of birds, 170. 

 Elimination, 321, 322. 

 Elliot, Scott, 3. 

 Emotions, 222. 

 Engrams, 14. 



Environment, animate, 207. 

 Ephemerides, 233. 

 External periodicities, 4. 

 Extinction of types, 321. 



Fall of leaf, 250. 



Fatigue, 360. 



Fischel, 6. 



Fishing by animals, 129. 



Flat fish, 206. 



Flight, contrast between Spring 



and Autumn, 81. 

 Flowers, 93, 112. 

 Forel, A., 337. 



Galapagos Islands, 121. 



Games, 228. 



Gaskell, 5. 



Gatke, 69, 75, 76, 77, 295. 



Germination, 61. 



Gesner, 3. 



Gill, Dr. Theodore, 43. 



Gnats, life-history of, 27. 



Goeldi, Dr. Emil, 128. 



Gossamer, 243, 255. 



Grassi, 42. 



Green, Prof. J. Reynolds, 64. 



Grey hair, 373. 



Grilse, 301. 



Groos, Prof., 154, 214, 218. 



Growth, 212. 



Hacker, Prof. V., 151. 

 Hamerton, 224. 



Harvey, 181* 



Heat, influence of, 205. 



Hering, Prof., 5. 



Hertwig, Prof., 362. 



Hibernation, 315, 332. 



Hickson, Prof., 3, 261. 



Hilton, 328. 



Hodge, Prof., 360. 



Hornbill, nest of, 162. 



Huber, 226. 



Hudson, 3, 223. 



Humble-bees, life-story of, 86; 



inter-relations with other living 



creatures, 89. 

 Humboldt, 3. 

 Humphrey, Prof., 370. 

 Huxley, 12, 197. 



Ice ages, 289, 313, 320. 



" Immortality " of the Protozoa, 



357- 



Instinctive activities, 125. 

 Integration, 213. 

 Intelligent activities, 125. 



Jacobi, 42, f. 

 Jacobson, Edward, 122. 

 Jetsam, 346. 

 Juan Fernandez, 121. 



Kearton, 219. 



Kerner von Marilaun, 120. 



Kirby, W. E., 54. 



Klebs, experiments on Algae, 60. 



Kofoid, 8. 



Kropotkin, 65, 120. 



Lemmings, 287. 

 Leptocephalus, 43. 

 Light, influence of, 206. 

 Lingula, 199. 



Living and not living, 325. 

 Living creature and its surround- 

 ings, ii. 

 Loeb, 206. 

 Lyonnet, 51. 



