INDEX. 



451 



Ectocarpus, male parthenogenesis iii, 



247. 

 Eggs, number laid by various birds, 12, 



37 ; of insects, 17. 

 Eider-ducks, length of life of, 1 1 . 

 Eimer, on the inheritance of mutilations, 



426. 

 Eleodes grandis, and dentiper, length 



of life of imago of, 47. 

 Elephants, length of life of, 6 ; gestation 



of, 7. 

 Encystment, relation to death of, 112, 



115, 116, 1 20, 158; protective, 117, 



121 ; of Rhizopoda, 121. 

 Entoniscidae, unequal length of life in 



male and female, 58. 

 Ephemeridae, length of life of imago of, 



40, 156. 



Epigenesis, theory of, 316. 

 Eristalis tenax, length of life of, 43. 

 Estheridae, 228. 

 Euglypha, identity of products of fission 



of, 26, 64, 65. 

 Eupithecia, length of life of, 45. 



Falcons, length of life of, u, 37. 



Fiedler, on polar bodies in sponges, 

 217. 



Flemming, on nuclear division, 187, 

 2 3L 35936i. 



Flourens, on length of life, 7. 



Fol, on fusion of nuclei, 174, 189; on 

 origin of ova, 222 ; on multiple im- 

 pregnation, 236, 238, 382 ; on polar 

 bodies, 340, 351 ; on process of fertiliza- 

 tion, 355. 



Formica sanguinea and fusca, length 

 of life of, 51. 



Fox, length of life of, 14. 



Galls, 302, 401. 



Galton, on transfusion in Rabbits, 166 ; 



on heredity, 172 ; on twins, 380. 

 Gannets, numbers collected each year, 



37- 



Geotropism, 398. 

 Germ, meaning of, 148. 

 Germ-cells, 73 ; predisposition of the, 



84, 102 ; fluctuations in, 102 ; not 



continuous, 173. 

 Germ-plasm, 80, 191, 266,341,357, 371, 



403 ; continuity of, 104, 168, 173, 184 ; 



definition of, 174. 

 Goliathus cacicus, length of life of 



imago of, 47. 



Goose, length of life of the wild, 37. 

 Gotte, on necessity of death, 112; on 



rejuvenescence, 115, 124; on death of 



Metazoa, 125. 

 Gregarines, 148, 149, 202. 

 Grobben, on polar bodies of Cetochilus, 



2lS. 



Gruber, on regeneration amongst In- 

 fusoria, 185. 



Gryllotalpa, duration of life of, 39. 



Gryllus campestris, duration of life of, 

 39- 



Hackel, on reproduction, 72; on Peri- 

 genesis of the Plastidule, 165 ; on 

 amphigonic reproduction, 272. 



Hare, length of life of, 14. 



Hartlaub, on origin of germ-cells in 

 Obelia, 208. 



Hawk-moths, length of life of imago, 17. 



Helicidae, length of life of, 55, 56, 57. 



Heliotropism, 399. 



Hemiptera, length of life of, 41. 



Hens, length of life of, 36. 



Hensen, on sexual reproduction, 282, 

 286 ; on difference between germ- 

 plasm and histogenetic nucleoplasm, 

 343 ; on heredity, 369. 



Heredity, 29, 71, 378 ; defined, 72 ; de- 

 pendent on continuity of germ-plasm, 

 104, 1 68; dependent on coalescence 

 of nuclei, 178. 



Hertwig, O., on fusion of nuclei, 174 '> 

 on the influence of gravity in segmenta- 

 tion, 177, 189 ; on polar bodies, 340, 

 351 ; on process of fertilization, 355. 



Hesperornis, rudimentary wing of, 88. 



Heterogeny, 325. 



Heterogynis, 44. 



Heteroplastides, 130, 131, 134, 139, 

 146, 153, 204. 



Hildebrandt, on duration of life in 

 plants, 32, 65 j on cross-fertilization, 



309- 



His, on heredity, 166, 390, 412 ; on the 

 transmission of mutilations, 423. 



Hoek, on polar bodies in Balanus, 218. 



Hoffman, on transmission of acquired 

 characters, 407. 



Homoplastides, 122, 139, 146, 202. 



Horse, length of life of, 6, 7 ; in the 

 Falkland Islands, 99. 



Humboldt's Atur Parrot, 12. 



Hunter, John, experiments in Ana- 

 biosis, 25. 



Hyalineae, length of life of, 56. 



Hybrids, 330. 



Hydroids, origin of germ-cells of, 199, 

 206, 207, 211. 



Hyla, 301, 394. 



Hymenoptera, length of life of, 49. 



Hypermetropia, 89. 



Ichneumons, length of larval life of, 

 15 ; length of life of imago of, 49. 



Ichthyophthirius multifiliis, fission of, 

 148, 149. 



Idioplasm, 174, 184, 192, 341 ; not 

 identical with nucleoplasm, 180; rela- 



Gg 



