434 



INDEX 



colony formation in Hydra, 116. 

 Obelia, 119. 



,, ,, ,, Protozoa, 40 44. 



colour changes in animals, 341, 342. 

 colours of animals, 336, 337. 



,, ,, ,, Erasmus Darwin 



on, 372. 



,, ,, flowers, 355. 

 column, of flower, 360, 363. 

 combustion, energy liberated by, 4, 6. 



,, nature of, 2, 5, 6. 



communication between cells, 187. 

 compound characters, 208. 

 conceptacles of Fucus, 100. 

 Condylarthra, 309, 313. 

 cone of attraction (or reception) in 



Goccidium, 88, 143. 

 congenital variations(characters),157. 

 Conilera, 227. 

 conjugants, in Paramoecium, 92, 



Fig. 41. 

 conjugation of chromosomes, 137, 



Fig. 68. 



gametes, 33, 82-85, 

 131, 141, 

 206, 207, 

 Fig. 65. 



M in Ascaris, 



131, Fig. 

 64. 

 ,, in Bodo, 87, 



Fig. 38. 



,, in Oocci- 



dium, 88, 

 Fig. 39. 



in Coelo- 



mata, 125. 



,, ,, in Copromo- 



nas, 83, 

 Fig. 37. 



,, inEudorina, 



91, Fig. 40. 



,, ,, in ferns, 105. 



',, ,, in flowering 



plants, 

 109. 



,, ,, in Fucus, 



101, Fig. 

 47. 



,, ,, in Hsema- 



tococcus, 



33, Fig. 5. 



,, in heredity, 



171. 



,, in Pando- 



rina, 89, 

 Fig. 10. 



con j ugation of gametes in Para- 

 mcecium, 

 92, 93, 

 Fig. 41. 



,, ,, in Spiro- 



gyra, 96, 

 97, 142, 

 Figs. 43, 

 44. 



nium, 97. 

 ,, of nuclei in zygote, 



131, Fig. 64. 

 ,, origin of, 127. 



results of, 84, 87. 

 connecting links, 232235, 305 



318. 

 destruction of, 



222. 



conodonts, 289. 

 conservatism of germ cells, 184, 



190. 



continental islands, fauna, 332. 

 continents, permanence, 329. 

 continuity of germ plasm, 166, 168, 



Fig. 76. 

 life, 67. 



,, parent and offspring, 



Erasmus Darwin on, 

 370. 



,, ,, protoplasm, 66. 



continuous selection, 411. 



,, variations, 148, 150. 



contractile tissue (see muscle fibres). 



,, vacuole, 14, 18. 



convergence, 247 255. 



,, in Acacia, 280. 



flightless birds, 397. 



plants, 2fi2. 

 ,, proboscis of bees and 



Lepidoptera, 354. 

 " Convolvulus major," fertilization, 



351, 352. 

 co-operation, 40. 



,, of factors in evolution, 



421. 



Oopromonas, life-history, 83, Fig. 37. 

 ,, nuclear reduction, 139. 



coracoid, 234, Figs. 89, 93. 



vestigial, 257, Fig. 90. 

 corals, 114, 265. 



cork, cellular structure, 37, Fig. 6. 

 corolla, 106. 

 corpora lutea, 126. 

 corpuscles, blood, 51, 5?, Fig. 15. 

 correlation, 409, 415. 

 cortical tissues, 50. 



