b. Abdominal transplantation of the bud which secretes the stylet for the 

 study of the determinism of coaptations. Rhodnius prolixus (Reduviidae, 

 Heteroptera) 



^^^^J^T^'^^ ^- ^'^-^^ ^'''- ~ ^"'^- d'Embryol. et Teratol. exper du 

 C.N.R.S., 49bis Avenue de la Belle Gabrielle, NOGENT sur Marne 

 (Seine), France 



— Lab. d'Embryol. exper. du Coll. de France, 1 1 Place Marcelin Ber- 

 thelot, PARIS Ve. France 



a. Etude de la croissance et de la differenciation du bourgeon de membre 

 in vitro. Gallus gallus (Aves) 



b. Effets des rayons X et de I'yperite sur les composants ectodermiques et 

 mesodermiques du bourgeon de membre. Gallus gallus (Aves) 



PLEEGING, J.H. Med.Drs. — Dept. of Anat. and Embryol.. State Univ. of 

 Groningen, Oostersingel 69, GRONINGEN, Netherlands 

 a. Topographical relationships in the intestines during ontogenesis. Mus 



musculus albinus (Rodentia) 

 h. Development of the glomus chorioideum. Homo sapiens (Primates) 

 PLESNER, P. Cand.med. — Biol. Inst, of the Carlsberq Foundation 16 



Tagensvej, COPENHAGEN N, Denmark 

 PLETICHA, P. RNDr. — Inst, of Histol. and Embryol., Fac. of Med., 

 Charles Univ., Karlovarska 48, PLZEN, Czechoslovakia 

 a. Ontogeny of the air sacs. Larus ridibandus, Fulica atra, Turdus merula, 

 Ciconia alba, Ardea cinerea (Aves) 

 POHL, Miss V. A. Lie. en Sci.Zool. — Lab. de Morphol. anim., Univ. libre 

 de Bruxelles, 1850 Chaussee de Wavre, BRUXELLES-Auderghem, 

 Belgique 

 POHLEY, H.J. Dr., Prof. — Inst, fiir Entw.physiol., Univ. zu Koln, Gyrhof- 

 str. 17, KOLN-Lindenthal, Deutsche Bundesrepublik 

 a. Theoretische und experimentelle Untersuchungen uber 1 ) Regeneration 

 und Hautung, 2) Regulation des Zellteilungswachstums. Ephestia kiih- 

 niella (Lepidoptera), Periplaneta americana (Orthoptera) 

 h. Modelldarstellung entwicklungsphysiologischer Systeme mit Hilfe von 

 programmgesteuerten Rechenanlagen. 

 POLEZHAEV. L.V. Dr.biol.sci., M.I.I.E.. Prof. — Inst, of Animal Mor- 

 phol., Acad, of Sci. of the U.S.S.R., Vavilov St. 12, MOSCOW V-133, 

 U.S.S.R. 



a. Regeneration of cranium bones. Mus domesticus, Rattus norvegicus, 

 Oryctolagus cuniculus, Felis domestica, Canis familiaris (Mammalia) 



b. Regeneration of dental tissue. Canis familiaris (Carnivora) 



c. Regeneration of myocardium. Rattus norvegicus, Oryctolagus cuniculus, 

 Felis domestica (Mammalia) 



d. Restoration of regeneration capacity of limbs after X-irradiation. Ambij- 

 stoma mexicanum (Urodela) 



e. Regeneration of the brain. Felis domestica, Canis familiaris, Rattus nor- 

 vegicus (Mammalia) 



POLTEVA, Mrs.D.G. — Dept. of Embryol, Leningrad Univ., Mendeleevsky 

 St. 5, LENINGRAD, U.S.S.R. 

 a. Comparative study of the processes of regeneration and somatic embryo- 

 genesis. Actinia equina, Metridium senile fimbriatum, Anthopleura kuro- 

 gane (Hexacorallia) 



161 



