440 



INDEX 



germ plasm, complexity, 167. 



,, composition, 172, Fig. 78. 



,, constitution, 205, 206. 



continuity, 166, 168, 



Fig. 76. 



,, influenced by environ- 



ment, 159. 

 gestation of nature, R. Chambers on, 



384. 



pigantic animals, 303, 304, 405409. 

 Gila monster, 342. 

 gill slits, in Amphioxus, 266. 



embryos, 261, 273, Fig. 



122. 



gills of crustaceans and fishes, 255. 

 giraffe, 2-18, Fig. 104. 



,, Lamarck on, 379. 

 glacial periods, 327, 328. 

 glass snakes, 250. 

 gliadin, 23. 

 glucose, 28, 31. 

 glutinin, 23. 

 Godlewski, 174. 

 gonads, 113. 



,, in Coelomates, 124. 

 ,, ,, Hydrozoa, 124. 

 ,, ,, medusae, 121. 

 gonoducts, 125. 

 gonophores, 122. 

 gonotheca, 120. 

 "gorillas," Hanno on, 42'2. 

 gorse, recapitulation in seedlings, 280. 

 gradation in nature, Buffon on, 366. 

 ,, structure, 232. 

 ,, of animals, Lamarck on, 



376. 

 Orantia compressa, larva, 322, Fig. 



164. 

 grape hyacinth, curve of variation, 



150, Fig. 72. 

 ,, sugar, 28, 31. 

 grasshopper, spermatogenesis, 134, 



Fig. 66. 

 Gray, Asa, 386. 

 Gray, J. E., 227. 

 grazing mechanism, 309. 

 Great Britain, a continental island, 



332. 



Greenland, former mild climate, 328. 

 Grew, Nehemiah, 37. 

 gristle, 56. 

 growth, 10, 20. 



control of, 408. 



in Amoeba, 20. 



,, animal tissues, 75. 



,, plants, 76. 



,, ,, periodicity of, 191. 



guard cells, 64, Fig. 26. 

 guinea pigs, Brown-Sequard's experi- 

 ments, 180. 



Gulf Stream, dispersal by, 322, 323. 

 Gulick, 417, 418. 

 gut wall, 124. 

 Gymnotus, 256. 

 gynoecium, 106. 



H. 



HABIT, of plants modified by en- 

 vironment, 181. 

 habitat, 319, 

 habits, adaptation in, 337. 



,, influence of, Lamarck on, 



377, 378, 379, 380. 

 ,, in plants, 191. 

 Haeckel, Ernst, 66, 229, 265, 277. 

 hsematids, 52, Fig. 15. 

 hsematochrome, 28. 

 Hsematococcus, 27 34, Fig. 5. 

 ,, conjugation, 89. 



,, dispersal, 327. 



haemoglobin, 53. 

 hair, vestigial, 261. 

 hairs of Tradescantia, 61, Fig. 25. 

 hand of man, 256, 424, 425. 



,, ,, monkeys and apes, 424. 

 Hanno, 422, 424. 

 harmony, in coloration, 336. 

 Harpax tricolor, 339. 

 Hatteria (see Sphenodon). 

 Hawaiki, 399. 



heat, in living organisms, 6. 

 Heidelberg, fossil man, 423. 

 Heilprin, A., 319. 

 Heliconime, 345. 

 Heliconius ethi/la, 345, Fig. 176. 

 Heloderma suspectum, 342. 

 Hemiphaya chathamensis, 416. 



,, novae zealandia>, 416. 



Henslow, G., 183. 

 Herbst, 45. 



heredity, 161 210 (see also inherit- 

 ance). 



Buffon on, 369. 

 ,, Charles Darwin's theory, 



164166. 

 ,, fertilization experiments, 



174, 175. 



Galton on, 209, 210. 

 ,, in neuter insects, 189, 190. 



Protista, 161. 

 Lamarck on, 380, 381. 

 Mendelian experiments, 

 194209. 



