INDEX 



PAGE 



Psilophyton, figure showing 162 



reference to 1 60 



Pteridosperm, figure showing 148 



reference to 147 



Pterodactyls, features of 260 



Python, vestigial legs of 36, 37 



Quaternary period, events of 161 



Queen bee, figure of 187 



life and labors of 189-191 



Rabbit, vermiform appendix of 43 



Rabbit and hare, fertile hybrid produced by 116 



Racial development, comparison of, with individual development 77 



Rails, flying and flightless species of 98-99 



Radiation, adaptive, definitions of 157, 330 



Rallidae, flying and flightless species of 98-99 



Ray, John, species founded by 114 



Recapitulation theory, experimental demonstration of 55-56 



reference to 18-19 



sketch of 68-75 



statement of 50 



Record of the rocks, chapter on 102-111 



Religion, relations of evolution to 77 



Remane, cited 290 



Reptile, derivation of bird from 242-254, 367-369 



differences between mammal and 285-286 



evolution of 284-285 



evolutionary relations of bird to 367 



heart and circulation of 245 



links between mammal and 286 



relations of, to bird, as shown by blood tests 367-369 



Reptilian ancestry of birds, reference to 243-254, 259-261, 367 



Rhea, competency of, to survive 99 



Rhodesia, ancient skulls from 136 



Robertson, Janet, restoration of fern by 148 



Robinson, Alfred, figure reproduced from photograph by 184 



Rock movements caused by uplift and crumpling, examples of 107-108 



Rocks, record of, chapter on 102-111 



Romanes, G. J., figure cited from 36 



observations of the behaviour of monkeys by 301-302 



Royal jelly of bees, uses of 190, 191 



Rowe, A. W., studies of sea urchins by 117-119 



Russia, remains of theromorphs from 282 



St. Helena, peculiar animals of 98 



Salamanders, larva and embryo of 55 



Salamandra atra, nature of young of 55 



Salamandra maculosa, experiments with 53 



nature of young of 55 



Schuchert. Charles, cited 120 



[388] 



