a Study of water and ion fluxes in oocytes. Bufo bufo (Anuca) 



DICKSON. A. D. M.D. — Div. of Morphol. Sci., Fac. of Med., Univ. of Calgary, CAL- 

 GARY 44, Alta., Canada 

 a Control and significance of trophoblastic giant cell transformation of the blastocyst. Mus 



musculus (Rodentia) 

 h Hormonal secretion by unimplanted blastocysts. Mus musculus (Rodentia) 

 DICKSON, D. H. M.Sc. — Dept. of Anat., Univ. of Western Ontario, LONDON, Ont., 



Canada 

 a Electron microscopy of the developing eye. (Urodela) 

 DIDIER (MARTIN), Mrs. E. Lic.es Sci. — Lab. de Biol. Anim., 1 Av. Vercingetorix, 63 



CLERMONT-FERRAND, France 

 DIEHL, F. A. Ph.D. — Dept. of Biol., Univ. of Virginia, Gilmer Hall, CHARLOTTES- 

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

 a Problems of development: cell and tissue migrations; the roles of individual cell types 

 during morphogenesis; the synthesis of extracellular mesoglea and perisarc and their role in 

 development. Cordylophora caspia (Hydcoidea) 

 DIETERLEN (LIEVRE), Mrs. F. Dr.es Sci. — Inst. d'Embryol. exper. du Coll. de France 

 et du C.N.R.S., 11 Place M. Berthelot, PARIS Ve, France • 



a Endoderm-mesenchyme interactions in the development of the pancreas: reassociation with 

 heterologous mesenchymes (lung, gizzard or somatopleura) (organotypical cultures followed 

 by coelomic grafts). Gallus gallus (Aves) 

 b Inductive interactions in the early development of the spleen. Gallus gallus (Aves) 

 c Enzyme development in heterologous reassociations (pancreatic epithelium + lung mesen- 

 chyme). Gallus gallus (Aves) 

 DI GRANDE, Miss F. Dr. — Inst, of Zool., Fac. of Sci., Univ. of Bologna, Via S. Giacomo 



9, 40126 BOLOGNA, Italy 

 a X-ray destruction of germ cells, sterile gonad development and sex differentiation. Bufo 



bufo, Rana dalmafina (Anura) 

 DILLARD, W. Ph.D. — Max-Planck-Inst. fur Zellbiol., Anton-Dohrn-Weg, Postfach 1009, 



D 294 WILHELMSHAVEN, W.Germany 

 a RNA-synthesis. Acetabularia spp. (Algae) 

 DI MARCOTULLIO, A. D.Sc. — 1st. di Zool. e Anat. Comp., Univ. di Trieste, Via Alfonso 



Valerio, 32 TRIESTE, Italy 

 a Regeneration and germ cell differentiation. (Planariidae, Turbellaria) 

 DIMOND, Sister M. T. Ph.D., Prof. — Dept. of Biol., Trinity Coll., WASHINGTON. 



D.C. 20017, U.S.A. 

 a Histogenesis and interrelations of endocrines: the hypophysis under normal conditions and 

 after treatment with goitrogens; the developmental sequence of organic iodine compounds 

 in the thyroid; ultimo-branchial body and calcitonin in bone development. Chelydra serpen- 

 tina serp. and other spp. (Chelonia) 

 DI STEFANO, L. Dr. — 1st. di Istol. ed Embriol., Univ. di Palermo, Via Archirafi 18, 



90123 PALERMO, Italy 

 DOANE. Mrs. W. W. Ph.D. — Dept. of Biol., Kline Biol. Tower, Yale Univ., NEW 



HAVEN, Conn. 06520, U.S.A. 

 a Developmental and physiological genetics of isoamylases: analysis of genetic regulatory 

 mechanisms in cellular differentiation as revealed through the combined techniques of 

 biochemistry, genetics and cytogenetics. Drosophila melanogaster, D. hydei and other spp. 

 (Diptera) 

 b Developmental and experimental analysis of mutants characterized by abnormalities in lipid 

 and carbohydrate metabolism, as well as in endocrine and reproductive physiology. 

 Drosophila melanogaster (Diptera) 

 DOBKIN, Sh. Ph.D. — Dept. of Biol. Sci., Florida Atlantic Univ., BOCA RATON, Fla., 



U.S.A. 

 DOBROWOLSKI, J. M.Sc. — Dept. of Zool., Wyzsza Szko^a Pedagogiczna, ul. Podbrzezie 



3, KRAKOW, Poland 

 a Critical periods for simultaneous action of weightlessness and ionizing radiation on devel- 

 opment. Cricetus auratus (Rodentia) 

 h Influence of salinity. X-rays and temperature on larval development and assessment of 



critical periods. Salamandra salamandca (Urodela) 

 c Embryo culture. Salamandra salamandra (Urodela) 



d Influence of temperature on sex ratio. Salamandra salamandra (Urodela) 

 e Influence of salinity, temperature and combined action of weightlessness and X-rays on 

 embryonic and larval development; morphogenetic effect, lethality and mechanisms of action. 

 Xenopus laevis (Anura) 

 DODSON, J. W. Ph.D. — Dept. of Zool., Univ. of Bristol, BRISTOL BS8 lUG, England 

 a Secretory activity of larval epidermis. Ambystoma spec. (Urodela) 



DOERR (SCHOTT), Mrs. J. Dr.es Sci. — Lab. de Zool. et d'Embryol. Exper., Fac. des 

 Sci.. Univ. de Strasbourg, 12 rue de I'Universite, STRASBOURG, France 



47 



