HENRIKSON, R. C. Ph.D. — Med. School, Boston Univ.. 80 E.Concord St.. BOSTON. 



Mass. 02118, U.S.A. 

 a Electron microscopy of epidermal development (establishment of cell lines or types). 



(Teleostei) 

 HERBERT. C. F. B.Sc. — Dept. of Zool. and Comp. Anat., Univ. Coll. London, Cower St.. 



LONDON W.C. 1, England 

 a The preparation of a timed series of developmental stages. Pygoscelis adeliae, P. antarctica, 



P. papua (Impennae, Aves) 

 h Investigation of early neurulation. Pygoscelis adeliae, P. antarctica, P. papua (Impennae, 



Aves) 

 HERLANT (MEEWIS), Mrs. H. Dr.en Sci.Zool.. Prof. — Lab. de Biol. Animale et Histol. 

 Comp., Fac. des Sci.. Univ. Libre de Bruxelles, Ave. F.-D. Roosevelt 50. BRUXELLES 5. 

 Belgique 



(no embryological work in progress) 

 HERMAN, L. Ph.D., Prof. — Dept. of Pathol, State Univ. of New York, Downstate Med. 



Center, BROOKLYN. N.Y. 11203, U.S.A. 

 a Electron microscopy of normal and urethane induced changes in embryonic neural tube 



cells and lung tissue cells. Mus musculus (Rodentia) 

 HERNANDEZ, Miss C. E. M.D. — Catedra de EmbrioL, Fac. de Med., Univ. de Los Andes, 



MfiRIDA, Venezuela 

 a Development of the vascular system. Honio sapiens (Primates) 

 b Development and functional anatomy of the mammary gland. (Mammalia), Homo sapiens 



(Primates) 

 c Teratology. Homo sapiens (Primates) 



HEROLD, R. C. Ph.D. — Dept. of Biol.. Grad. School of Arts and Sci.; Lab. of Histol. and 

 EmbryoL, School of Dental Med., Univ. of Pennsylvania. PHILADELPHIA, Pa. 19104, 

 U.S.A. 

 a Developmental study of flight muscle mitochondria structure and function (biochemistry 



and electron microscopy). Apis mellifera (Hymenoptera) 

 h Development of embryonic fine structure, mitochondria and cell membrane; effect of 



chemical treatments. Echinarachnius parma (Scutellidae, Exocyclica, Echinoidea) 

 • HERRMANN, H. M.D., Prof. — Inst, of Cell. Biol., Dept. of Zool., Coll. of Liberal Arts 



and Sci., Univ. of Connecticut, STORRS. Conn. 06268, U.S.A. 

 HERZBERG, F. M.S. — Dept. of Anat., Center for the Health Sci.. Univ. of California, 



LOS ANGELES, Calif. 90024, U.S.A. 

 a Effects of massive doses of ionizing radiation on growth and reproduction. Helix aspersa 



(Pulmonata, Gastropoda) 

 HESS, O. Dr.rer.nat. — Max Planck Inst, fiir Biol., Abt. Beermann, Spemannstrasse 34, 



TUBINGEN, Deutsche Bundesrcpublik 

 a Experimental embryology. (Mollusca) 

 h Developmental physiology. (Mollusca) 

 c Gene function and differentiation of male germ cells, cytogenetics. Drosophila spp. 



(Diptera) 

 HESSELSJO, R. Med.lic. — Dept. of Anat., Univ. of Gothenburg, GOTEBORG SV, Sweden 

 HEWITT, W. M.B.. B.S. — Dept. of Anat.. St. Thomas's Hosp. Med. School, LONDON 



S.E.I, England 

 a Development of the brain. Homo sapiens and other spp. (Mammalia) 

 HEYN, A. N. J. Prof. — Dept. of Biol.. Louisiana State Univ. in New Orleans, Lake Front. 



NEW ORLEANS, La. 70122, U.S.A. 

 a Egg shell formation and structure. Gallus domesticus (Aves) 

 HICKEY, Miss E. D. M.A. — Div. of Cell Biol, and Chem. EmbryoL, Zool. Inst., Univ. of 



Bern, Sahlistr. 8, 3000 BERN, Switzerland 

 a Effects of thyroxine on isolated tadpole tails. Xenopus laevis (Anura) (in collaboration 



with R. WEBER) 

 HILFER, S. R. Ph.D. — Dept. of Biol.. Temple Univ., Broad and Berks St., PHILADEL- 

 PHIA. Pa. 19122, U.S.A. 

 a Effect of pituitary extirpation on reamputation and regeneration of regenerating limbs. 



Triturus viridescens (Urodela) 

 h Stability of dissociated embryonic thyroid cells as measured by morphological and chemical 



criteria of differentiation. Gallus domesticus (Aves) 

 c Electron microscopy of differentiating thyroid cells. Gallus domesticus (Aves) 

 HILLMAN, Mrs. N. WILLIAMS Ph.D. — Dept. of Biol., Temple Univ.. Broad and Berks 



St., PHILADELPHIA. Pa. 19122, U.S.A. 

 HINCHLIFFE, J. R. B.A. — Wye Coll., near ASHFORD, Kent, U.K. 

 HINRICHSEN, K. Dr.med., Prof. — Anat. Inst, der Univ., Osterbergstr. 3. 7400-TtlBIN- 



GEN, Deutsche Bundesrepublik 

 a Development of lymphatic tissues. Mus musculus (Rodentia), Homo sapiens (Primates) 

 HINSCH, Miss G. W. Ph.D., Prof. — Dept. of Biol.. Mount Union Coll.. ALLIANCE. Ohio 



44601, U.S.A. 

 a Histochemistry of trachea, oesophagus and proventriculus. Gallus domesticus (Aves) 



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