500 



INDEX. 



Pedigree of Vertebrates, ii. 121 

 Pelvic girdle, ii. 278, 304 



intestinal cavity, i. 335 



Penis, ii. 423, 431 

 Pentadactylia, ii. 123, 302 

 Perigastrula, i. 230, 241 

 Peripheric nerve- system, ii. 223 

 Permian period, ii. 10 

 Petromyzontes, ii. 101, 120 

 Phallus, ii. 422, 431 

 Phallusia, i. 454 

 Pharynx, ii. 316, 330 

 Philology, ii 20 



comparative, ii. 21 



Philosophy, i. 17 ; ii. 456 

 Phylogenesis (evolution of the tribe), 



i. 12 

 Phylogenetic fission of the lavers, 

 i. 238 



hypotheses, i. 413 



Phylogeny, i. 5,'72 

 Physiogeny, i. 21, 24 

 Physiology, i. 20 



comparative, i. 20 



Physiophyly, i. 24 

 Pig, i. 362 



Pigment-membrane, ii. 252 

 Pithecanihropi, ii. 181 

 Pithecoid theory, ii. 441 

 Placenta, i. 383 ; ii. 155, 168 



disc-shaped, ii. 162, 187 



embryonic, ii. 160 



fcetalis, ii. 160 



girdle-shaped, ii. 162, 187 



maternal, ii. 160 



utet'ina, ii. 160 



Placental animals, ii. 153, 187 

 Placentalia, ii. 153, 187 

 J'lancea, ii. 61 

 Planseads, ii. Gl 

 Plant-animals, 

 Planula, ii. 59 

 Plasson, i. 130 ; ii. 43 

 Plastids, i. 130 ; ii. 45 

 Plastid ancestors, ii. 184 

 Plastid theor}^ i. 130 

 Plastidnles, ii. 47 

 Plates (lamellcB), i. 303 

 Plathelviinthes, ii. 76 

 Platyrhince, ii. .175, 189 

 Pleuro-peritoneal cavity, i. 260 

 Pliocene period, ii. 11, 15 



Polydactylia, ii. 123 

 Porus genitalis, ii. 402 

 Post-glacial period, ii. 11 

 Pouch-bones, ii. 151 

 Pouched animals, ii. 149, 187 

 Praedelineation theory, i. 37 

 Praeformation, i. 34 



theory, i. 34 



Prceputium, ii. 423, 431 

 Pressure, sense of, ii. 238 

 Primary axial skeleton, ii. 285 



age, ii. 10, 11 



germ-layers, i. 196 



Primates, ii. 169 



Primitive amnion animals, ii. 133 



animal ancestors, ii. 184 



animals, or Protozoa, i. 248 



clavicula, ii. 278 



egg (Protovum), i. 134 



fins, ii. 303 



Fishes, ii. 112, 120 



furrow, i. 226 



germ-layers, i. 195 



groove, i. 335 



intestine, i. 444 ; ii. 313 



kidney, i. 306; ii. 410 



ducts, ii. 403 



Mammal, ii. 142, 187 

 Man, ii. 182 

 mouth, i. 414; ii. 313 

 skull, ii. 296 



• slime, ii. 43 



• streak, i. 299 

 urine-bladder, ii. 411 

 uiine-sac, i. 379; ii. 411 



• vertebrae, i. 346 



• vertebral cords, i. 305 



 vertebral plates, i. 346 

 Vertebrate (ideal), i. 253 

 (real), ii. 98 



Woi-m, ii. 74, 80 



Pt-imorJial cleavage, i. 198, 241 



kidneys, i. 307 ; ii. 410 



skull, ii. 297 



times, ii. 9, 11 



Prochorion, ii, 157 

 Pi'ocoracoideum, ii. 278, 304 

 Promammalia, ii. 142, 187 

 ProsimicB, ii. 163, 187 

 Protamceha, ii. 46 

 Protamnion, ii. ''33 

 Prothelmis, ii. 7b 



