c Spatial organization and supracellular patterns in embryonic tissues. Gallus gallus (Aves) 

 DE HOYOS, E. — Dept. of Pathol., Dartmouth Med. School, HANOVER, N.H. 03755, U.S.A. 

 a Electron microscopy of developing islets of Langerhans. Mus musculus (Rodentia) 

 DELEANU, M. Dr.med. — Centrul de Embriol. Norm, si Patol., Acad. Republ. Social. 



Romania, Bul.M.Viteazul 24, TIMI§OARA, Rumania 

 a Experimental syndactylism. Gallus domesticus (Aves) 

 h Embryonic heterografts. Gallus domesticus (Aves) 

 DELLA CROCE, N. Dr.Nat.Sci., Prof. — 1st. di Zool., Univ. di Genova. Via Balbi 5, 



GENOVA. Italy 

 a Embryo development of a parthenogenetic marine form. Penilia avirostris (Cladoceca, 



Crustacea) (in collaboration with Mrs. S. BETTANIN-BELGRANO) 

 b Growth of the embryo. Penilia avirostris (Cladocera, Crustacea) (in collaboration with 



Mrs. S. BETTANIN-BELGRANO) 

 c Formation of resting eggs. Penilia avirostris (Cladocera, Crustacea) (in collaboration with 



Mrs. S. BETTANIN-BELGRANO) 

 DELMAS, A. Prof. — Lab. d'Anat., Fac. de Med.. 45 rue des Sts. Peres, 75 PARIS Vie, 



France 

 DeLONG, G. R. M.D. — Dept. of Neurol., Massachusetts Gen. Hosp., BOSTON. Mass. 



20015, U.S.A. 

 DEL RIO, A. G. — Inst, de Biol., Univ. Nac. de Tucuman, Chacabuco 460, S. M. de 



TUCUMAN. Argentina 

 a Intermediate metabolism during early development; glycolysis. Bu}o arenarum (Anura) 

 DE LUCA, V. M.D., Prof. — 1st. di Zool., Univ. di Catania, Via Androne 81. 95124 



CATANIA, Italy 

 a Physiological and experimental embryology of the earliest developmental stages. Porcellio 



laevis (Isopoda). Eyprepocnemis plorans (Orthoptera) 

 DELYE (ROLLIN), Mrs. P. M. Lic.es Sci. — Lab. de Morphogenet. Anim., Fac. des Sci., 



Place Victor Hugo, 13 MARSEILLE 3, France 

 DeMAGGlO, A. E. Ph.D. — Dept. of Biol. Sci., Dartmouth Coll., HANOVER, N.H. 03755, 



U.S.A. 

 a Experimental developmental morphology. (Plantae) 

 DENIS, H. A. Dr.es Sci. — Lab. de Biochim., Univ. de Liege. 17 Place Delcour. LIEGE. 



Belgium • 



a Etude du role des acides nucleiques dans la differenciation embryonnaire. Xenopus laevis 



(Anura) 

 b Interactions nucleo-cytoplasmiques durant le developpement de I'oeuf. Arbacia lixula, 



Paracentrotus lividus (Echinoidea) 

 DENIS, Miss S. Lic.Sci.Zool. — Lab. de Morphol. Anim., Univ. libre de Bruxelles. 67, 



rue des Chevaux, RHODE-ST-GENfiSE, Brabant, Belgium 

 a Studies on the metamobism of lethal hybrids. (Echinoidea; Amphibia) 

 DENKER, H.-W. — Arbeitsgr. Prof. G. H. M. Gottschewski am Max-Planck-Inst. fur 



Immunbiol., Stefan-Meier-Str. 8, 78 FREIBURG, W.Germany 

 a Histochemistry of acid muco substances and enzymes in early stages (fertilization through 



implantation). Mus musculus. Rattus norvegicus, Mesocricetus auratus. Cavia cobaya 



(Rodentia) 

 DENNE, M. P. Ph.D — Plant Physiol. Div., Dept. of Scient. and Industrial Research, 



PALMERSTON NORTH, New Zealand ^^ 



DENT, J. N. Ph.D., Prof. — Dept. of Biol., Univ. of Virginia. Gilmer Hall. CHARLOTTES- 

 VILLE, Va. 22903. U.S.A. 

 a Metamorphic patterns. Various species (Amphibia) 

 DEOL, M. S. Ph.D. — Dept. of Genet., Univ. Coll. London, Gower St., LONDON W.C. 1, 



England 

 DEPARIS. P. Dr.Biol. — Lab. de Biol. Gener., Fac. des Sci., 118 Route de Narbonne. 31 



TOULOUSE (04). France 

 a Hematopoiese. (Urodela) 

 DfiPECHE. J. — Lab. d'Evolution des Etres Organises, Fac. des Sci.. 105 Bd. Raspail. PARIS 



Vie, France 

 a Physiological investigations on embryos of viviparous fishes developing in vitro. 



Poecilia reticulata (= Lebistes reticulatus). Xiphophorus helleri, Gambusia afiinis, Heteran- 



dria formosa (Poeciliidae, Teleostei) 

 DE REGGI, L. M. Dr.Spec. — Sect, de Biol. Gen. et Appl.. Univ. de Lyon. 43 Bd. du 



11 Novembre 1918, 69 VILLEURBANNE, France 

 a Variations morphologiques et physiologiques dans le developpement, sous Taction de divers 



facteurs. (Phytophthires, Rhynchota) 

 DEROM, R. M. J. M.D.. Ph.D. — Dept. of Obstet. and Gynecol.. Fac. of Med.. Univ. of 



Ghent. Aan de Bocht 6, GHENT, Belgium 

 a Anaerobic metabolism in the fetus (determination of blood lactate and pyruvate; calcu- 

 lation of "excess lactate"). Homo sapiens (Primates) 



45 



