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 (Aues) 

 b Ultrastructure of cell wall in relation to development. (Plantae) 

 HIBBARD, E. Ph.D., Prof. — Dept. of Biol., Coll. of Sci., Pennsylvania State Univ., 208 Life 



Sciences I, UNIVERSITY PARK, Pa. 16802, U.S.A. 

 a Effects of polarity on differentiation of sensory structures and outgrowth of nerve fibres. 



Xenopus laevis & other spp. (Amphibia) 

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



of Bern, Sahlistr. 8, CH-3000 BERN, Switzerland 

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



with R. WEBER) 

 HICKLIN, Miss J. B. B.A. — Dept. of Biol, as Appl. to Med., The Middlesex Hosp. Med. 



School, Cleveland St., LONDON, W.l. England 

 a Investigation of factors controlling polarized regulation of a linear pattern (techniques: 



cutting, grafting and action of various inhibitors). Hydra littoralis (Hydrozoa) 

 HIKAMI, Y. B.Sc. — Lab. of Anim. Nutr., Fac. of Agric, Kobe Univ.. 1 Rokkodai-cho, 



Nada-ku, KOBE, Japan 

 a The effect of growth regulating substances on embryonic muscle growth. Gallus domesticus 



(Aves) 

 HILD, W. J. M.D., Prof. — Dept. of Anat., Med. Branch, Univ. of Texas, GALVESTON, 



Tex. 77550, U.S.A. 

 a In vitro development of retinal explants; differentiation of sensory cells and synaptic 



complexes. Rattus norvegicus (Rodentia), Felis domestica (Carnivoca) 

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

 DELPHIA, Pa. 19122, U.S.A. 

 a Effect of pituitary extirpation on reamputation and regeneration or 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. 

 HINDMAN, J. L. Ph.D., Prof. — Dept. of Botany, Univ. of Georgia, ATHENS, Ga. 30601, 



U.S.A. 

 a Protein changes in the apex during photoperiodic induction, with special interest on the 



changes associated with the differentiation of the various floral organs. Chenopodium alba 



( Chenopodiaceae) 

 h Factors affecting formation of callus from floral apices and the subsequent differentiation 



of the callus tissue into organized buds. Nicotiana tabacum (Solanaceae), Aquilegia spec. 



(Ranunculaceae) 

 KINDS, J. W. Ph.D. — Dept. of Anat., School of Med., Boston Univ., 80 E. Concord St., 



BOSTON, Mass. 02118, U.S.A. 

 a Golgi impregnation and electron microscopic study of neurogenesis and gliogenesis in the 



olfactory bulb. Mus musculus, Rattus domesticus (Rodentia) 

 HINRICHSEN, K. Dr.med., Prof. — Anat. Inst, der Univ., Osterbergstr. 3, 74 TUBINGEN, 



W.Germany 

 HINSCH, Miss G. W. Ph.D., Prof. — Inst, of Molec. Evolut., Univ. of Miami, 521 Anas- 



tasia Ave., CORAL GABLES, Fla. 33134, U.S.A. 

 HINTON, H. E. Ph.D.. D.Sc, Prof. — Dept. of Zool., Univ. of Bristol. BRISTOL BS8 



lUG. England 

 HIRABAYASHI, T. M.A. — Inst, of Zool., Fac. of Sci.. Tokyo Kyoiku Univ.. Otsuka 



3-29-1. Bunkyo-ku. TOKYO, Japan 

 HIRADHAR. P. M.Sc. — Dept. of Zool., Fac. of Sci., M.S. Univ. of Baroda, BARODA-2. 



India 

 a Tail regeneration in the adult. Hemidactylus flaviviridis (Lacertilia) 

 HIRAIWA, Y. K. t D.Sc, Prof. — Seinan Gakuin Univ., FUKUOKA, Japan 



(deceased) 

 HIRAKOW, R. D.Med.Sc. — Dept. of Anat., School of Med., Tokyo Med. and Dental 



Univ., Yushima, Bunkyo-ku, TOKYO, Japan 

 HIRAMOTO, Y. D.Sc, Prof. — Misaki Marine Biol. Station, Univ. of Tokyo, MISAKI, 



Kanagawa-ken, Japan • 



a Cell division. (Echinoidea) 



h Physical properties of marine eggs. (Echinoidea) 

 c Physiological studies on fertilization. (Echinoidea) 

 HIRANO, C. Ph.D. — Div. of Entomol., Natl. Inst, of Agric. Sci.. Nishigahara. Kita-ku. 



TOKYO. Japan 



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