PEARSON, A. A. 1943. The trochlear nerve in human 

 fetuses., Jour. Comp. Neur. 78:29-43. (Histology, dif- 

 ferentiation of neurones and fiber tracts. ) 



1944. The oculomotor nucleus in the 



human fetus. Jour. Connp. Neur. 80: 47-63. (Histo- 

 logy of oculomotor nucleus and tract and Edinger- 

 Westphal nucleus.) 



1945. Further observations on intrannedullary 



sensory type neurones along the hypoglossal nerve. 

 Jour. Comp. Neur. 82: 93-100. (Human fetuses; in- 

 fants, adults; observations on histogenesis of unipolar 

 sensory neurones near inferior olivary nucleus of hy- 

 poglossal nerve. ) 



PEDASCHENKO, D. 1914. Die Entwicklung der Augen- 

 muskelnerven. Anat. Anz. 47: 145. 



PENFIELD, W. and R. C. BUCKLEY. 1928. Punctures 

 of the brain; the factors concerned in gliosis and in 

 cicatricial contractions. Arch. Neur. Psychiat. 20: 

 1-13. (Dogs; puncture of brain with blunt needle, re- 

 moval of brain core with sharp instrument; effect of 

 type of injury on scar formation, vascularization, 

 gliosis, deformation; practical bearing on methods of 

 biopsy of brain tissue. ) 



PENNERS, A. 1931. Vergleichende Entwicklungs- 

 mechanik. (Referat) Zool. Anz. suppl. (Verhandl. 

 Deutsch. Zool. Ges. E. V. ) 5: 67-98. (A review of re- 

 search on the mechanics of developnnent in all aninnal 

 groups.) 



PENTA, P. 1931. La colorazione vitale e la pernnea- 

 bilita della barriera emato-encefalica negli animali 

 neonati. (Vital coloration and permeability of the hennato- 

 encephalic barrier in the newborn.) Boll. Soc . Ital. Biol. 

 Sperim. 6: 711-714. (Newborn cats, rabbits; vital stain- 

 ing; relation of dye penetration to affinity for and 

 presence of microglia in hennato-encephalic barrier.) 



PETER, K. 1936. Untersuchungen Uber Zelluntergang 

 in der Embryogenese. I. Prolegonnena: tJber die Wer- 

 tung des physiologischen Zelluntergangs im Allgemei- 

 nen. II. Die vermeintliche nnorphogenetische Zell- 

 degeneration. Zeitschr. Anat. u. Entwicklungsgesch. 

 105: 409-428. (Critical analysis of theories of Kallius, 

 Erst, and GlUcksnnann; cellular degeneration in em- 

 bryogenesis- role in fornnation of optic cup, cavitation 

 of neural tube. Role of proliferation and degeneration 

 in embryonic folding. ) 



1939. Gastrulation und Chordaentwicklung bei 



Reptilien. Zeitschr. Anat. u. Entwicklungsgesch. 109: 

 493-512. (Lizard, chameleon, and snake embryos; 

 fonnation of the notochord. ) 



PETERFl, T. 1927. Das leitende Element. Handbuch 

 der nornnalen und pathologischen Physiologie 9. All- 

 gemeine Physiologie der Nerven und des Zentral- 

 nervensystems. (E.T. II, 1, 2, a--c), 79, 170. 



and O. KAPEL. 1928. Die Wirkung des An- 



stechens auf das Protoplasma der in vitro gezuchteten 

 Gewebezellen. III. Anstichversuche an den Nerven- 

 zellen. Arch. f. exp. Zellforsch. 5: 341-348. 



PEYTON, W. T. 1933. A study of developmental 

 cranio-cerebral topography as deternnined by the ortho- 

 scopic method. Jour. Nerv. Ment. Dis. 78: 232-249; 

 381-399. (Man; fetus to adult; changes in cerebral 

 silhouette area with maturation; correlation with changes 

 in sulci and fissures. Quantitative??) 



PFEIFFER, C. 1925. Phenonnenes n-iechaniques dans le 

 developpement de I'hypophyse chez les Oiseaux. C. R. 

 Soc. Biol. 93: 761. (Chick, duck; role of peri- 

 chordal cartilage in deternnining the contributions of 

 ecto- and hypo-blast to the hypophysis in different spe- 

 cies. ) 



1925. Note sur le developpennent de I'hypohyse 



des Oiseaux. C. R. Soc. Biol. 92: 1091. (Gallus, 

 Anas, species differences in origin of various lobes of 

 hypophysis in embryos. ) 



PERRI, t. 1933. Sul comportamento dell'abbozzo 

 oculare di Anfibi in condizioni di espianto. (The be- 

 havior of explanted amphibian eye rudiments. ) Atti R. 

 Accad. Naz. Lincei Rend. CI. Sci. Fis., Mat. e Nat. 

 17: 856-861. (Explantation of anuran eye cups plus 

 ectoderm; complete self-differentiation and induction 

 of a lens. ) 



1933. Espianto dell'abbozzo dell'occhio di 



Anfibi Anuri. (Explantation of anuran eye rudiments. ) 

 Ricerca Scientifica Anno 4, 2: 244-248. (Harmonious, 

 complete differentiation of isolated anuran eye cups.) 



1934. Ricerche sul connportamento dell'- 

 abbozzo oculare di Anfibi in condizioni di espianto. 

 (The behavior of explanted amphibian eye rudiments. ) 

 Roux' Arch. f. Entw.-Mech. d. Org. 131: 113-134. 

 (Bufo vulgaris, Rana esculenta; harmonious self- 

 differentiation of primarily optic vesicle in isolation. 

 Relation to development of lens. ) 



PERRONCITO, A. 1908. Zur Frage der Nerven- 

 regeneration. Beitr. z. path. Anat. u. z. allg. Path. 

 44: 574. 



1909. Uber die Zellen beim Degeneration- 



svorgang der Nerven. Folia Neuro-biol. 3: 185. 



1927. Le rigenerazioni. Atti Soc. Ital. Prog. 



Sci. (Roma) (Riunione 15, Roma) 1926: 317-336. (Not 

 abstracted in Biological Abstracts - a review??) 



1926. Note sur I'infundibulum diencephalique 



du Poulet. C. R. Soc. Biol. 95: 104. (See Collin, R. , 

 Ibid, 105. ) (Ennbryo; morphogenesis of infundibulum 

 and relation to Seesel's and Ratheke's pouch. ) 



PFLUGFELDER, O. 1929. Histogenetische und 

 organogenetische Prozesse bei der Regeneration poly- 

 chaeter Anneliden. I. Regeneration des Vorderendes 

 von Diopatra amboinensis Aud. et M. Edw. Zeitschr, 

 Wiss. Zool. 133: 121-210. (Effect of fluid pressure, 

 cell accunnulations, and fiber orientation on the regen- 

 eration of nervous system, free nerve endings, and 

 sense organs in Diopatra. ) 



1932. Cber den feineren Bau der Augen freil- 



ebender Polychaten. Zeitschr. Wiss. Zool. (Leipzig) 

 142: 540-586. (Relation of eye structure to type of 

 life; formation of eyes in embryo, degeneration at 

 metannorphosis in Diopatra. Histological study.) 



1937. Die Entwicklung der optischen Ganglien 



von Culex pipiens. Zool. Anz. 117: 31-36. (Develop- 

 n:ient of larval and imaginal ganglia, neuropil. ) 



PHILIPS, F. S. 1942. Comparison of the respiratory 

 rates of different regions of the chick blastoderm during 

 early stages of development. Jour. Exp. Zool. 90: 

 83-100. 



PHILLIPS, W. H. , J. R. DIRION and G. O. GRAVES. 

 1932. Congenital bilateral palsy of the abducens. Arch. 

 Ophthalmol. 8: 355-364. (Man; congenital absence of 

 abducens nerves; hypoplasia of corresponding nuclei.) 



74 



