726 



INDEX 



Plexus, hypogastric, 561 



intestinal, 489, 539, 540 



lumbar, 531 



lumbo-sacral, 468, 489, 534 



Meissner's, 561 



myenteric, 539, 561 



prevertebral, 561 



sacral, 533, 534 



submucous, 539, 561 



thoracic, 4S9 

 Plica(e) circularis (semilunaris), 314, 315 



ventralis, 640 

 Pliocene, 33 

 Pliotrema, 336 

 Plume, 172 

 Pluralist, xiv 

 Poison fangs, 186 



gas, 573 



glands, 303 

 Polar axis, 64 



body, 59, 64 

 Polarity, 60, 469 

 Polarization, 42, 62 

 Polarized, 61 



cells, 469 



light, 144 

 "Polliwog," 50 

 Polymastism, 181 

 Polymorphonuclear leucocyte, 162 

 Polynuclear gland cells, 515 

 Polyp(s), 5, 6 

 Polyphyletic theory, 367 

 Polyphyodont dentition, 187 

 Polypterus, 24, 89, 345 

 Polysaccharid (glycogen), 322 

 Polyzoa, 9 



Pons (of Varolius), 480, 495, 511, 513, 549 

 Popliteal artery, 379, 393 



vein, 397 

 Popliteus m., 283 

 Porcupine, 28 

 Pore (porous), 11, 30, 53 

 Porifera, 4, 30 

 Porpoise, 28 

 Portal v., 352, 382 



hepatic, 352 



renal, 352, 354, 356 

 Portuguese man-of-war, 5 

 Postanal gut, 298, 300, 318 

 Postbranchial bodies, 460, 459 

 Postcardinal veins, 352, 353, 356, 376, 382 



Postcava, 25, 323, 352, 354, 356, 361, 382, 



387, 396 

 Postfrontal bone, 218 

 Postganglionic fibers, 538 

 Post-natal, 55, 56 

 Posttrematic branch, 485 

 Postzygapophysis, 207 

 Potassium iodide, 456 

 Potentialities, 44 

 Pouch(es), 83 



marsupial, 27, 50, 51 

 Precardinal vein, 352, 363, 356, 37C, 382 

 Precava, 352, 353, 356, 387, 395 

 Prechordal cartilage, 228 

 Precoracoid, 239, 240 

 Preganglionic fibers, 524, 538 

 Pregnancy, 449, 451 

 Premandibular cavity, 611, 616, 617, 618 



somite, 617 

 Premaxillary bone, 219, 230 

 Premolar(s), 30, 189, 192 

 Pre-natal, 56 

 Pre-oral, 30, 230, 609, 618 



gut, 617 



lobe, 17, 639, 640, 660 

 Prepuce, 429, 445 

 Preputial sac, 415 

 Pressure, 487, 507 

 Pretrematic branch, 485 

 Prezj'gapophysis, 207 

 Primary bone, 106 

 Primate, 3, 28, 29, 30, 32, 34, 191 

 Primitive duct, 430, 431, 432 



ganglion cells, 469, 472 



groove, 76 



streak, 76, 76, 78, 78, 79, 79, 86, 87 

 Primordial, 228 



blood cells, 365 



germ cells, 3(1, 100, 409, 440 



skull, 216 

 Primordium hippocampi, 490 

 Proboscidian (s), 28, 32, 190, 191 

 Proboscis, 17, 658 



cavitj', 660 



pore, 17 



sheath, 658, 658 

 Pro-cartilage, 229 

 Process(es), accessory, 208 



articular, 208 



condyloid, 223 



coronoid, 248 



costal, 212 



