782 PATTERNS AND PROBLEMS OF DEVELOPMENT 



Experimental studies on the developing perch {Pcrca Jlavescens Mitchell). Proc. Soc. 

 Exp. Biol. Med., 31. 1936a. Structures developed in amphibians by implantation of 

 living fish organizer. Ibid., 34. 1936b. The development of isolated blastoderms of 

 Fundulus heteroclihis. Jour. Exp. Zool., 72. 1936c. Transplantation experiments on 

 developing teleosts {Fundulus and Perca). Ibid. ig36d. Processes of localization in 

 developing FiDididus. Ibid., 73. 1938. Potencies for differentiation in the teleostean 

 germ ring. Ibid., jg. — Opperman, K. 1913. Die Entwicklung von Forelleneiern nach 

 Befruchtung mit radiumbestrahlten Samenfaden. Arch. mikr. Anat., 83. — Oshima, H. 

 1921. On the development of Cucumaria echinata. Quart. Jour. Micr. Sci., 65. — 

 Otto, F. 1921. Studien iiber das Regulationsvermogen einiger Siisswasserbryozoen. 

 Arch. Entw'mech., 47. 



Paff, G. H. 1936. Transplantation of sino-atrium to conus in the embryonic heart 

 in vitro. Amer. Jour. Physiol., 117. — Painter, B. T. 1938. Grafting experiments di- 

 rected toward ascertaining the location of factors of head regeneration in the earth- 

 worm. Abstr. Amer. Soc. Zool., Anat. Rec, 72, Suppl. 4. — Painter, T. S. 1915. The 

 effects of carbon dioxide on the eggs of Ascaris. Jour. Exp. Zool., 19. — Parke, O. 

 1929. The differential reduction of osmic acid in the cortex of Paramecium and its 

 bearing on the metabolic gradient conception. Physiol. Zool., 2. — Parker, G. H. 1905. 

 The movements of the swimming plates in ctenophores with reference to theories of 

 ciliary metachronism. Jour. Exp. Zool., 2. 1925. Production of carbon dioxide by 

 nerve. Jour. Gen. Physiol., 6. 1929. The metabolic gradient and its appHcations. 

 Brit. Jour. Exp. Biol., 6. — Parseval, M. von. 1922. Die Entwicklung zentrifugierter 

 Eier von Tubifex rivulorum Lam. Arch. Entw'mech., 50. — Pasquini, P. 1927. Tra- 

 pianti omeoplastici degli abozzi oculari negli embrioni di Plcurodcks waltli. Atti 

 Accad. naz. Lincei, ser. 6, 5. 1931. Sul differenziamento correlative della lente cristal- 

 lina e della cornea nello sviluppo di Anuri ed Urodeli. Rend. Accad. naz. Lincei, 14. 

 1932. SuUa determinazione e sul differenziamento del cristallino in Rana catesbiana 

 (Shaw). Jour. Exp. Zool, 61. 1933. L'eteromorfosi sperimentale nelle Ascidie (Clave- 

 liiia lepadiformis O. F. MuUer). Arch. Zool. ital., 18. — Pasteels, J. 1932. Etude des 

 localisations germinales de I'oeuf insegmente des Amphibiens anoures. Arch. Biol., 43. 

 1936a. Etudes sur la gastrulation des Vertebres meroblastiques. I. Ibid., 47. 19366. 

 Analyse des mouvements morphogenetiques de gastrulation chez les oiseaux. Bull. 

 Acad. roy. Belg., CI. des sci., ser. 5, 22. 1936c. Centre organisateur et glycogenolyse. 

 Arch. Anat. micr., 32. 1937a. Etudes sur la gastrulation des Vertebres meroblastiques. 

 II, III, IV. Arch. Biol., 48. 1937b. Sur I'origine de la symetrie bilaterale des Amphib- 

 iens anoures. Arch. Anat. micr., t,2>- 1938. Resultats experimentaux concernant le de- 

 terminisme precoce chez les Amphibiens. C. R. Assoc. Anat., 1938. 1939. Recherches 

 sur les facteurs initiaux de la morphogenese chez les Amphibiens anoures. II. Arch. 

 Biol., 50. — Patterson, J. T. 1909. Gastrulation in the pigeon egg. Jour. Morphol., 20. 

 191 2. A preliminary report on the demonstration of polyembryonic development of the 

 armadillo. Anat. Anz., 41. 1913. Polyembryonic development in r^/w^/a ;?oi)ewza»c/a. 

 Jour. Morphol., 24. 1915. Observations on the development of Copidosoma gelechiae. 

 Biol. Bull., 29. 1921. The development of Paracopidosomopsis. Jour. Morphol., 36. — 

 Paulcke, W. 1901. Uber die Differenzierung der Zellelemente im Ovarium des Bienen- 

 konigin. Zool. Jahrb. Abt. Anat. Ont., 14. — Pauli, Margarete. 1927. Die Entwicklung 

 geschniirter und centrifugierter Eier von Calliphora erythrocephala und Musca domes- 



