a Morphogenesis of skeleton. (Reptilia; Aves; Mammalia) 



b Embryonic membranes. (Reptilia) 



c Regeneration. (Reptilia) 



BELLAIRS, Mrs. M. R. Ph.D. - Dept. of Anat. and Embryol., Univ. Coll. London, Gower Street, 



LONDON WC1E6BT, England 1SDB 



a Electron microscopy and histochemistry of yolk formation. Gallus domesticus (Aves) (with M. A. 



ENGLAND, Royal Free Hosp.) 

 b Cell migration within the embryo. Gallus domesticus (Aves) (with M. BACKHOUSE) 

 c Cleavage. Gallus domesticus (Aves) (with F. LORENZ, Davis, Calif.) 

 d Electron microscopy of the talpid mutant. Gallus domesticus (Aves) (with M. BACKHOUSE, and 



D. EDE, Glasgow) 

 BELOUSOV, L. V. Cand.biol.sci. - Chair of Embryol., Biol. Fac, State Univ. of Moscow, Lenin 



Hills, MOSCOW 117234, U.S.S.R. 

 a Spatial distribution and physical nature of the forces involved in shaping of epithelial layers. 



Obelia spec, Dynamena spec, Hydra spec. (Hydrozoa) and of mesodermal cell masses 



(Amphibia) 

 b Metabolic gradients, their physico-chemical nature and interrelations with morphogenetic pro- 

 cesses (development of planula, budding). Obelia spec, Hydra spec. (Hydrozoa) (Echinoder- 



mata) 

 c Mechanics of blastomere arrangement in spiral cleavage. Lymnaea spec. (Gastropoda) 

 BENAZZI (LENT ATI), Mrs. G. Prof. Emer. - 1st. di Zool. e Anat. Comp. dell'Univ., Via A. Volta 4, 



56100 PISA, Italy 

 a Chromosome cycles in amphigonic and pseudogamous biotypes; determinism of pseudogamy and 



polyploidy. (Tricladidea, Turbellaria) 

 BENAZZI, M. Prof. Emer. - 1st. di Zool. e Anat. Comp. dell'Univ., Via A. Volta 4, 56100 PISA, 



Italy ISDB 



a Asexual reproduction, pseudogamy, polyploidy and heredity. (Tricladidea, Turbellaria) 

 BENEDETTI, I. Dr.Biol.Sci. - 1st. di Anat. Comp., Univ. di Modena, Via Berengario 14, 41100 



MODENA, Italy 

 a Mitotic activity in the nervous system. Viviparous and oviparous spp. (Teleostei) 

 b Development of intramedullary ganglion cells. Jordanella floridae, Coregonus spec, Perca fluvia- 



tilis, Crenilabrus quinquemaculatus (Teleostei) 

 BENOIT, J. A. A. - Inst. d'Embryol. et Teratol. Exper. du C.N.R.S., 49bis Av. de la Belle Gabrielle, 



94130 NOGENT-sur-MARNE, France ISDB 



a Etude in vitro de l'embryon. Mus musculus (Rodentia) 

 b Etude experimentale in vitro de la gastrula. Mus musculus (Rodentia) 

 BENSON, P. F. Ph.D. - Paediat. Res. Unit, Guy's Hosp. Med. School, St. Thomas St., LONDON SE1 



9RT, England 

 a Development of enzyme systems before and after birth. Rattus spec. (Rodentia), Homo sapiens 



(Primates) 

 BENTYN, K. M.D. - Dept. of Exper. Embryol., Inst, of Obstet. and Gynecol., Med. Acad., Karowa 



2, 00-315 WARSZAWA, Poland 

 a Concentration of urea in blood serum, uterine secretion and blastocoelic fluid. Oryctolagus 



cuniculus (Lagomorpha) 

 BEREITER-HAHN, J. Dr.phil.nat., Prof. - Arb.gr. Kinemat. Zellforsch., Univ., Senckenberganlage 



27, 6000 FRANKFURT/M., B.R.D. (Germany) 

 a Variation of dry mass/water ratio in different parts of the egg from fertilization through first 



cleavage (interference microscopy). Psammechinus miliaris (Echinoidea) 

 b Electron microscopy of pigment granule formation in melanophores. Pterophyllum scalare 



(Cichlidae), Lebistes reticulatus (Poeciliidae, Teleostei) 

 c Hormonal induction of keratinization in epidermal cells in tissue culture (time-lapse cinemicro- 



graphy, histochemistry, electron microscopy). Same species as b 

 d Ultrastructure of the development of flame cells in the skin. Hippocampus. (Teleostei) 

 BERENDES, H. D. Dr., Prof. - Dept. of Genet., Univ. of Nijmegen, Toernooiveld, NIJMEGEN, 



Netherlands ISDB 



a Induction and repression of puff activity in poly tene chromosomes. Drosophila spp. (Diptera) 

 b Gene function and differentiation in salivary gland cells. Drosophila spp. (Diptera) 

 c Hormonal regulation of postembryonic development. Drosophila spec, Chironomus spec. 



(Diptera) 

 BERGERARD, J. Dr.es Sci., Prof. - Lab. de Zool., Centre d'Orsay, Univ. Paris-Sud, 91405 ORSAY, 



France 

 a Effects of thermal stress on sexual differentiation. Carausius morosus (Phasmida) 

 b Effects of thermal stress and supernumerary chromosomes on development. Locusta migratoria 



(Orthoptera) 

 BERGQUIST, H. Ph.D. - Inst, of Zool., Univ. of Gothenburg, Fack, S-400 33 GOTHENBURG 33, 



Sweden !SDB 



a Electron microscopy of neural tube. Gallus domesticus (Aves) 

 b Experimental ontogenesis of the central nervous system. Same species as a 

 BERKOVITZ, B. K. B. - Anat. Dept., Bristol Univ., University Walk, BRISTOL BS8 1TD, England 

 a Descriptive study of tooth development. Salmo gairdneri (Teleostei), Lepidosteus spec. (Holo- 



stei), Cavia porcellus, Rattus norvegicus (Rodentia), Physeter macrocephalus (Cetacea), Putorius 



p. furo (Carnivora) and other Vertebrata 

 BERNARD, C. Lic.es Sci., M.A. - Lab. de Physiol. Anim., Fac. des Sci., 40 av. du Recteur Pineau, 86 



POITIERS, France 



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