INDEX 



403 



carnivorous, 132; AldrovancUa, 138; 

 Liomca, 138; Drosera. 136; Lathnea, 

 135 ; ^eienUus. 134 ; Pinguicula, 135 ; 

 Utricularia, 133. 



Plant-galls, ii 270. 



Plastogamy a preliminary stage to fertili- 

 zation, ii. 220. 



Pliny, II. 



Polar bodies, 294. 



Polymorphism, its idioplasmie roots, 390. 



PoJyommatus phJieas, dimorphism of cater- 

 pillars, 363 ; climatic varieties, ii. 272. 



Postgeneration (Roux), 407. 



Pouchet, spontaneous generation, ii. 366. 



Poulton, on facultative colour adaptation 

 in caterj^illars, ii. 278 ; on mimicry, 105. 



Prediction on the basis of the evolution 

 theory, 3. 



Preformation and Epigenesis, 351. 



Primordial males among Cirrhipeds, ii. 

 242. 



Protective arrangements in plants, 119 ; 

 Alpine plants, 126 ; chemical substances, 

 128 ; ethereal oils, 128 ; hairs, 122 ; 

 poisons, 120; Eaphides, 129; 'Prigana 

 scrub,' 126; against small enemies, 127; 

 Tragacanth, 124. 



Protective colouring, role of light in, 78 ; 

 Kallima, 83; Notodonta, 80; Xylina, 82. 



Protective marking in caterpillars, 67. 



Protozoa, chromosomes in, ii. 216. 



Quetelet, amphigony preserves the mean 

 of the species, ii. 204. 



Eaces, development of, depending on 

 adaptation, ii. 335; dependent on ger- 

 minal selection, ii. 144. 



Radiolarians, skeleton of, ii. 324. 



Rand, experiments on regeneration in 

 Hydra, ii. 5. 



Rath, 0. von, on the influence of royal 

 food on drone-larvse, ii. 91. 



Ray, John, conception of 'species,' 14. 



Reactions, primary and secondary, ii. 277. 



Reducing divisions, see Maturation divi- 

 sions. 



Regeneration, ii. i ; atavistic, ii. 30 ; 

 autotomy, ii. 16 ; in birds, ii. 14 ; in 

 Hydra, ii. 4 ; in Hydroid polyps, ii. 9 ; 

 ill plants, ii. 9, 32 ; in Planaiians, ii. 

 6, 13; in starfishes, ii. 30; in Ver- 

 tebrates, ii. 10 ; of the lens in Triton, 

 ii. 19; a phenomenon of adaptation, 

 ii. 9 ; nuchar substance the first organ 

 of, ii. 31 ; phyletic origin of, ii. 23 ; 

 disappearance of the power of, ii. 16 ; 

 and bvidding, ii. 31 ; relation of, to 

 liability of part to injury, ii. 7 ; not 

 always purposive, ii. 25. 



Reinke, objections to the ' machine 

 theory' of life, 402 ; on regeneration, 32. 



Rejuvenescence, theory of, 325-8. 



Reproduction, adaptation of the germ- 

 cells, 277 ; asexual, ii. 259 ; structure 

 of the ovum, 280 ; of the bird's egg, 



285 ; zocsperm, 273 ; in Amoebse, 253 ; 

 in Infusorians, 254; in Pandorina morum, 

 257, 269; in fungi. 267; by means of 

 germ-cells, 266; differentiation of germ- 

 cells into male and female. 267 ; by divi- 

 sion, 264 ; two kinds of eggs in same 

 species, 282 ; nutritive ovum cells, 

 283; introduction of death into the 

 living world, 261 ; contrast between 

 reproductive and body cells in the 

 Metazoa, 256 ; budding and division in 

 theMetazon, 264 ; potential immortality 

 of the Protozoa, 260 ; sperm and ovum 

 in Algfe, 272 ; in Volvox, 265, 271 ; 

 zoosperms of Ostracods, 275; different 

 kinds of spermatozoa, 278. 



Reproductive cells, development f.f. 410 ; 

 in Diptera, 471; in Hydroid polyps,' 

 413- 



Reversion, ii. 53 ; in doves, ii. 55 ; in the 

 horse, ii. 55. 



Riley, fertilization of the Yucca by a 

 moth, 202. 



Ritzema Bos, experiments on mice, ii. 65, 

 66. 



Romanes, isolation theory, ii. 284 ; phy- 

 siological selection, ii. 337 ; panmixia, 

 ii. 115. 



Rosenthal, exjieriments with mice. ii. 65. 

 66. 



Roux, Wilhelm, Mosaic theory, 379 ; 

 struggle of the parts, 244 ; postgenera- 

 tion, 407. 



Ruckert, the nuclear substances in 

 Copepods, ii. 42. 



Rudimentary organs in man, ii. 226. 



St. -Hilaire, unity of type, 18. 



Samassa, segmentation of the fi'og's egg, 

 407. 



Sarasin, snails of Celebes, ii. 299. 



Saturnia, pupation of, 158. 



Schaudinn, fertilization in Coccidia, ii. 

 214 ; maturing division in Sun-animal- 

 cule, 318. 



Schimper. plants and ants, 171. 



Schleiden and Schwann, discovery of the 

 cell, 26. 



Schmankewitsch, experiments with 

 Artemia, ii. 277. 



Schmidt, Oscar, ii. 324. 



Schneider, discovery of the ' spindle-figure ' 

 of nuclear division, 289. 



Schiitt, Diatoms, ii, 325. 



Schwarz, Ostracods, 276. 



Segmentation-cells in animal ova, their 

 prospective importance, 406. 



Seitz, a case of mimicry, 114. 



Selection-proce^ses, grades of, ii. 265 ; 

 evolution guided by, ii. 298. 



Selection, sexual, 210-39 ; absence of 

 secondary sexual characters in the lower 

 animals, 231 ; adaptations for seizing 

 the females, 229 ; choice on the part of 

 the females, 214 ; odours and scent- 



