664 



INDEX. 



Prepuce, in the female, 428 



in the male, 428 

 Preservation of tissues, 633 

 Presphenoid bone, 195 

 Preterminal area of G. Elliot Smith, 476, 



548 

 Primary areas or fields of Flechsig, 565 

 Primary germ layers, (see also Germ 



layers), 55' 

 Primary oocyte, 10, 11, 20 

 Primitive body cavity (ccelom), 75 

 coordinating mechanism, 511 

 entoderm, 137 

 groove, 65, 90 



gut (see also Archenteron) , 55, 76, 317, 

 372 

 practical suggestions for study of, 



359. 3 8 5 

 intestinal cord, in the chick, 66, 81 



in Mammals, 70 



in Reptiles, 67 

 organs, 56 

 pericardial cavity, 88, 222, 311,373 



practical suggestions for study of, 



38S 



segments, 72, 143, 293, 300 



practical suggestions for further 

 study of, 183 



streak, in the chick, 65 

 in Mammals, 69 

 Primordial cranium, 193 

 Proamnion, 84, 108 

 Processus neuroporicus, 461 



reticularis, 518, 523 



vaginalis peritonei, 424 

 Procuring and handling material, 629 



amphibian embryos, 629 



chick embryos, 630 



frog's eggs, 629 



human embryos, 159, 631 



mammalian embryos, 630 



pig embryos, 630 



rabbit embryos, 631 

 Production of duplicate (polysomatous) 

 monsters, 625 



of monsters in single embryos, 626 

 Progamous determination of sex, 415 

 Projection fields, 565 

 Proliferation islands, 127 

 Pronephric duct, 387, 388 

 Pronephros, the, 387 



practical suggestions for study of, 439 



pronephric duct of, 3-87 

 tubules of, 388 



significance of, 388 

 Pronucleus, female, 18, 35 



male, 20, 3 5 

 Prophase, 4 

 Prosencephalon (fore-brain), 461, 464,474 



diencephalon, 462, 474 



peripheral neurones of, 508 



telencephalon, 462, 474 

 Prosopopagus parasiticus, 612 

 Prostate gland, 405 

 Protentoderm, 58 



of Amphibians, 58, 60 



of Birds, 64 



Protentoderm of Mammals, 70 



of Reptiles, 63 

 Protoplasm, structure of, 1 

 Protozoa, cell-division in, 4 



conjugation in, 40 

 Psalterium, see Fornix commissure 

 Pterygoid hamulus, 195 



process, 195, 198 

 Pubis, the, 207 

 Pulmonary artery, 231 

 Pulp of teeth, 326, 327 

 Pulpy nuclei, 183 

 Pulvinar thalami, 540 

 Purkinje cells, 534, 536 

 Pygopagus, 608 



Pyramids (see also Tracts, pyramidal), 

 479. 5 28 > 53°. S3 1 



Quadrigemina, anterior, see Anterior cor- 

 pora quadrigemina. 

 posterior, see Posterior corpora quad- 

 rigemina 



Rabbit, formation of amnion of, 108 



embryos, technic for, 63 1 

 Rabl, concerning origin of vitreous, 585 



concerning sex cells, 407 

 Rachischisis, 313, 617, 619 



cystica, 617 

 Radius, 204 

 Ramus, 200 



communicans, gray, 499 



white, 494, 499 

 Ranvier, concerning the origin of connec- 

 tive tissue fibers, 170 

 Raphe (of epichordal segmental brain), 

 522 



(of scrotum), 430 

 Rathke's pocket, 320 



pouch, 538 

 Receptors, 455, 458, 464, 467, 469 



visual, 508, 512 

 Recessus postopticus, 461, 538 



praeopticus, 461, 538 

 Recklinghausen, von, concerning deficient 



growth of blastoderm, 619 

 Reconstruction, 637 



graphic, 637 



plastic or wax, 638 

 Rectum, the, 342, 403 

 Red blood cells, 272, 273 

 Reduction, Minot's view of, 29 



of chromosomes (see also Maturation), 



\1, 4i3 

 practical suggestions for study of, 



33. 34 



theoretical aspects of, 28 



Weismann's theory of, 29 



with tetrad formation, 27 



without tetrad formation, 28 

 Reflex arc, 513 



two-neurone, 455 



three- neurone, 456 

 Regnier de Graaf, XIII 

 Reichert, XIV 

 Rejuvenescence theory, 40 

 Remak, views of cell-division, 4 



