a. The development and structure of the placenta. Homo sapiens (Primates) 

 (in collaboration with J. D. BOYD, Cambridge) 

 HAMMER, Miss M. K. B.A. — Station de Zool. exper., Univ. de Geneve, 

 Route de Malagnou 154, Chene-Bougeries, GEN6VE, Suisse 

 a. An experimental cytological study of primordial germ cells. Xenopus 

 laevis (Anura) 

 HAMMERLING, J. Dr.phil., M.I. I.E., Prof. — Max Planck Inst. f. Meeres- 

 biol., Anton Dohrnweg, 294, WILHELMSHAVEN, Deutsche Bundes- 

 republik 

 a. Nucleo-cytoplasmic relationships in unicellular algae, reticulocytes and 

 other cell types. 

 HAMMOND. W. S. Ph.D., M.I.I.E., Prof. — Dept. of Anat., School of Med.. 

 State Univ. of New York, 766 Irving Ave., SYRACUSE 10, N.Y., U.S.A. 



a. Development of the visceral skeleton. Gallus domesticus (Aves) (in 

 collaboration with C. L. YNTEMA) 



b. Origin of tongue musculature. Gallus domesticus (Aves) 

 HANAOKA, K. I. D.Sc, Prof . — Inst of Endocrinol., Gunma Univ., Iwa- 



gami-cho, MAEBASHI, Japan 



HANCOCK, J. L. — Agricultural Research Council, Animal Breeding Re- 

 search Organization, King's Buildings, West Mains Road, EDINBURGH 

 9, Scotland 

 a. Intergeneric hybrids. Capra hirca, Ovis aries (Artiodactyla) 



HANKE, W. Dr. — Zool. Inst, der Univ., Siesmayerstr. 70, FRANKFURT/ 

 Main, Deutsche Bundesrepublik 



a. Wechselwirkungen zwischen Corium und Epidermis an der Haut. Rana 

 temporaria (Anura), Mus musculus (Rodentia) 



b. Auslosung der Hautung mit Hormonen. Rana temporaria (Anura) 



c. Morphogenesen in Organkultur: 1) Verhalten von Haut, 2) Verhalten 

 von endokrinen Organen. Xenopus laevis (Anura), Mus musculus (Ro- 

 dentia) 



HANSON, E. D. A.B., Ph.D. — Shanklin Lab. of Biol., Wesleyan Univ., 

 MIDDLETOWN, Conn., U.S.A. 



a. Morphogenesis of oral structures. Paramecium spec. (Protozoa) 



b. Differentiation of gametes. Amphiscolops langerhansi (Convoluta, Acoela) 

 HARA, K. Ph.D. — Hubrecht Lab. (Intern. Embryol. Inst. ) , p/a Universiteits- 



centrum "De Uithof", UTRECHT, Netherlands 

 a. Neural induction: medio-lateral distribution of the inductive capacities 

 in the mesoderm, as studied by intracoelomic grafting. Gallus domesti- 

 cus (Aves) 

 HARKMARK. W. Dr.med., Prof. — Anat. Inst., Univ. of Bergen, BERGEN, 

 Aarstadvollen, Norway 



a. The histogenesis of the cerebellum with special emphasis on the Purkinje 

 cells. Gallus domesticus (Aves) 



b. The development of the hippocampus. Mus rattus (Rodentia), Balaenop- 

 tera physalus (Cetacea) 



HARPER, M. J. K. M.A., Dip.Agric, Ph.D. — Pharmaceutical Div., Imp. 

 Chem. Industr. Ltd., Alderley Park, MACCLESFIELD, Cheshire, Eng- 

 land 

 a. Ovum transport through the reproductive tract. Oryctolagus cuniculus 

 (Lagomorpha) , Rattus rattus (Rodentia) 



67 



