INDEX 



439 



frog, life-history, 272, Fig. 121. 



,, ,, interpretation of, 



279, Fig. 131. 



, , pineal eye in, 260, Figs. 115,116. 

 frogs and toads, 293. 

 fruit trees, propagation, 205. 

 fruits, dispersal, 321. 

 Fuchsia, distribution, 328. 

 Fucus, 99 101, Figs. 45 47. 

 Functions of organisms, 5. 

 Funduhis, cyclopean larvae, 157, 



Fig. 75. 

 Fungi, 34, 321. 

 f uniculus, of ovule, 108. 

 furze, recapitulation in seedlings, 280 



G. 



Galaxias niyothortik, dispersal of, 



326. 



Gallardo, 75. 

 Galton, Francis, 209. 

 Galton's law of inheritance, 209. 

 Galton's polygon, 155. 

 Galtonia, mitosis in, 76, Figs. 33, 34. 

 gametes, 33, 83 (see also germ cells). 



attraction of, 141, 142, 143. 

 ,, conjugation of, 207. 

 ,, evolution of male and female, 



84, 85. 

 ofBodo, 87. 

 fern, 104. 

 flowering plant, 108, 109, 



110. 



,, ,, Fucus, 100. 

 ,, ,, Pandorina, 89. 

 - ,, Spirogyra, 96, 97, 142, 



143. 



Volvox, 91. 

 purity of, 200, 206. 

 ,, sexual dimorphism of, 113, 



139. 



gametic nuclei in Paramcocium, 93. 

 gametogenesis, 132, Fig. 65. 

 gametophyte, 101. 



,, chromosomes of, 138 



of fern, 103, Fig. 50. 

 ,, ,, flowering plant, 107, 



108. 

 suppression of, 



112. 



gamobium, 121. 

 ganglion, 59. 

 ganoids, 292. 

 gastrsea, 277. 

 gastral cavity, 47. 



in Hydra, 115, 118. 

 inObelia, 119. 



gastrula, 47, 265, 277. 



,, interpretation of, 265, 279. 

 of Hydra, 118. 

 ,, Sagitta, 130, Fig. 63. 

 gastr ulation, in birds and reptiles, 



270. 



frog, 269, Fig. 119. 

 Geikie, Sir A., 285. 

 gemmules, dispersal of, 327. 

 ,, in pangenesis, 164. 

 ,, of fresh water sponge, 



327, Fig. 166. 

 genera, 225. 

 generative cells, 103. 

 Genesis, Book of, 212. 

 genital ducts, 125. 

 geographical distribution, 319 333. 

 ,, ,, summary, 330. 



isolation, 416, 417. 

 geological formations, 284. 



history of the earth, 284, 



285. 



periods, 284. 

 range of animal groups, 



284. 



record, 283, 287304. 

 geometer moths, caterpillars, 337, 



338, Fig. 169. 



Geoplana exulans, dispersal, 325. 

 Geotria, distribution, 329. 

 germ cells (see also gametes). 



and somatic cells, 97, 98, 

 99, 113, 129, 166, 167, 

 168. 



,, conservatism, 184, 190. 

 immortality, 162, 168. 

 ,, independence, 99. 

 maturation, 138. 

 ,, migration in Hydrozoa, 



123. 

 ,, origin in Ascaris, 129. 



Cceloniates, 124, 



130. 



Hydrozoa, 123. 



plants, 130. 

 ,, Sagitta, 130. 

 potentialities, 163. 

 ,, sensitive to stimuli, 188. 

 germinal disk, 140. 



,, selection, 173. 

 ,, variations, 149, 157160. 

 germination of fern spore, 103, Fig. 



,, pollen grain, 108, 



Fig. 54. 



seed, 109, Fig. 56. 

 germ layer theory, 48. 



