INDEX 



PAGE 



Plants, family tree of 137-139 



increasing complexity of, during geological time, diagram showing 157 



mode of evolution of 143 



orders of, genealogical line of 150, 151 



story told by fossil forms of 156-173 



transformation of, by human agency l4l 



Platypus, early teeth of 176-177 



features of 176 



reference to 262, 286 



Pleistocene epoch, ape-like men of 135 



elephants of 237-238, 239 



events of I6l, 170-172 



floras of 171-172 



glaciation in 170-173 



horses of 230 



man-like animals of 288 



plant migration in 171-172 



Plesihippus, geologic age of 226 



Pleurococcus vulgaris, figure showing modes of reproduction of 146 



Pliocene epoch, animals of 288 



apes of, features of skulls of 133 



deer of 132 



horses of 229-230 



mastodons of 234-235 



place of, in geological time table I6l 



stegodons of 236-237 



Pliohippus, geological age of 226, 230 



Polyphyletic hypothesis, outline of 149, 151 



Polypterus, features of ; 278 



Polyrachis, nests of 222 



Polytrichum commune, figure showing 147 



Potomac group of rocks, flora of, reference to 167 



Poulton, Edward Bagnall, chapter by 174-185 



cited 113-114, 118-119 



Preformationists, doctrine of 62-63, 65, 78-79 



Primates, establishment of order of 286 



fossil record of 265-267 



habitats of 265-266 



migrations of 265-266 



origin and evolution of 288-291 



results of blood tests of ^ 367 



Primofilices, reference to 146 



Pro-angiosperms, reference to l47 



Progress shown in evolution, chapter on 327-339 



Progression of life on earth, chapter on 124-136 



Prosopis, figure showing nests of 194 



Proterozoic era, length of 161 



life of 161, 271 



Protohippus, geological age of 226 



Protolepidodendron, restoration of 165 



Prototrophic organisms, examples of 257 



Psalmist, quotation from 324 



[ 387 ] 



