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INDEX
| PAGE | |
| Psilophyton, figure showing | 162 |
| reference to | 160 |
| 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 ]
