GUTIERREZ, M. Dr. — Dept. de Anat.. Cat. de Anat. II, Fac. de Med., CADIZ, Spain 

 GUYARD, A.' Lic.es Sci. — Lab. de Zool., Inst, des Sci. Nat., Fac. des Sci., Place Marechal 



Leclerc, 25 BESANCON, France 

 a Recherches sur la differenciation de la glande hermaphrodite. Helix aspecsa (Pulmonafa, 



Gastropoda) (en collaboration avec L. GOMOT) 

 GWATKIN, R. B. L. Ph.D. — Physiol. Dept., Merck Inst, for Thcrap. Research, RAHWAY, 



N.J. 07065, U.S.A. 

 a Studies on fertilization, implantation and early development. (Mammalia) 

 GYERGYAY, F. M.D. — Dept. of Neuropathol., Research Station of Tirgu-Mure5 of the 



Acad of the S.S.R.. Str. Gh. Marinescu 38, TIRGU-MURE§, Rumania 

 GYERGYAY (MALATINSZKY), Mrs. E. M.D. — Dept. of Neuropathol., Research 

 Station of Tirgu-Mure§ of the Acad, of the S.S.R., Str. Gh. Marinescu 38, TIRGU- 

 MURE§, Rumania 

 GYfiVAI (TOTH), Mrs. A. T. — Inst, of Exper. Med. of the Hung. Acad, of Sci., Morphol. 



Dept., Szigony-u. 43. BUDAPEST VIII, Hungary 

 GYLLENSTEN. L. J. W. Med.Dr. — Dept. of Histol., Karolinska Inst., Solnavagen 1, 



STOCKHOLM 60, Sweden 

 HACCIUS, Miss B. Dr., Prof. — Inst, fur spez. Botanik, Johannes-Gutenberg Univ., 65 



MAINZ, W.Germany 

 a Beeinflussung der Entwicklung von Embryonen durch Chemikalien (Wachstumsregulatoren; 



Antimitotica; Radiomimetica und Rontgenstrahlen). Eranthis hiemalis (Ranunculaceae) 

 b In vitro Kultur von Embryonen un Geweben. (Plantae) 

 c In vitro culture of callus cells with free tubular connections between the single cells. 



Cannabis sativa (Cannabaceae) 

 HACH, P. M.D. — Inst, of Embryol., Fac. of Med., Charles Univ., Albertov 4, PRAGUE 2, 



Czechoslovakia 

 a Histogenesis of the hypophysis (comparative studies on the submicroscopic structure and 



enzyme histochemistry). Mas rattus (Rodentia), Homo sapiens (Primates) 

 HADDAD, V. M.D. — Dept. of Physiol., School of Med., Tufts Univ., 136 Harrison Ave., 



BOSTON. Mass. 02111, U.S.A. 

 HADFIELD, M. G. Ph.D. — Pacific Biomed. Research Center, Univ. of Hawaii, 2538 The 



Mall, HONOLULU, Hawaii 96822, U.S.A. 

 a Sources of yolk and causative factors in the non-development of nurse eggs, (cyto- 

 chemistry, electron, phase-contrast and interference-contrast microscopy). (Vermetidae. 

 Gastropoda) 

 b Spermatogenesis with particular attention to formation of "giant", apyrene spermatozoa 

 (phase-contrast and electron microscopy); centrifugal separation and chemical analysis of 

 the apyrene sperm. (Vermetidae, Gastropoda) 

 HADJUSKI, P. Dr. — Inst. d'Histochim. Med., Fac. de Med. de Paris, 45 rue des Sts. Peres, 



75 PARIS Vie, France 

 a Development of the ovary. (Mammalia) 



HADORN, E. Dr.Phil., Prof. — Zool.-Vergl. Anat. Inst., Univ. Zurich, Kunstlergasse 16, 



CH-8006 ZURICH, Switzerland • 



a Determination, transdetermination and differentiation in cells of imaginal discs. Drosophila 



melanogaster (Diptera) 

 HAGELIN, L. O. Fil.lic. — Zool. Inst., Univ. of Stockholm, 70A RSdmansgatan, Box 6801, 



S-113 86 STOCKHOLM. Sweden 

 HAGET, A. Dr.es Sci., Prof. — Lab. de Zool. Exper., Fac. des Sci. de Bordeaux, Av. des 

 Facultes, 33 TALENCE, France . • 



a Analyse experimental de la morphogenese embryonnaire de la tete. Leptinofacsa spec. 



(Coleoptera), Locusta spec. (Orthoptera) 

 b Recherches sur I'edification de la blastule et de la gastrule. Leptinotarsa spec. (Coleoptera) 

 c Activation du systeme ovulaire. Leptinotarsa spec. (Coleoptera) 



HAGGIS, A. J. Ph.D., Prof. — Dept. of Biol., Univ. of Detroit, DETROIT, Mich., U.S.A. 

 HAGIWARA, A. D.Sc. — Lab. of Developm. Biol., Zool. Inst., Fac. of Sci., Univ. of 

 Kyoto, KYOTO, Japan ^ ,^ , 



HAGLUND, Miss B. M. Fil.lic. — Dept. of Zoophysiol., Univ. of Umea, S 901 87 UMEA. 



Sweden 

 a Permeability and osmoregulation. Xenopus laevis. Rana spp. (Anura), Siredon mexicanum 



(Urodela) ,, , , 



HAGSTROM, J. W. C. M.D., Prof. — Dept. of Pathol., Cornell Univ., 1300 York Ave., 



NEW YORK, N.Y. 10021, U.S.A. ^ ^ , 



HAIDER, M. H. M.Sc. — Dept of Zool., Univ. of Gorakhpur, GORAKHPUR (U.P.). India 

 a Cyclic changes in gonad development. Nandus nandus (Teleostei) 

 h Histomorphological studies on thyroid and pituitary glands in relation to seasonal changes 



in gonad development. Nandus nandus (Teleostei) 

 HAKANSSON, L. M.D. — Tornblad-Inst. for Comp. Embryol.. Biskopsgatan 7, LUND, 



Sweden 

 a Chromosome biochemistry during development. Gallus domesticus (Aves), Homo sapiens 

 (Primates) 



71 



