• HOLTZER, H. Ph.D., Prof. — Dept. of Anat., School of Med., Univ. of Pennsylvania. 



PHILADELPHIA, Pa. 19104, U.S.A. 

 HOMANN, H. Dr.rer.nat. — I. Physikal. Inst., Univ. Gottingen, Stegemiihlenweg 61, 34- 



GOTTINGEN, Deutsche Bundesrepublik 

 a Development of eyes. (Araneae, Oxyopidae, Ctenidae, Zoropsidae, Agelenidae, Dysderi- 



dae, Philodcomidae, Arachnoidea) 

 HOPERSKAYA, Mrs. O. A. — Inst, of Developm. Biol., Acad, of Sci. of the U.S.S.R.. 



Vavilov St. 26, MOSCOW V-133, U.S.S.R. 

 a Action of homogenate fractions and cell secretions from different organs and their 



rudiments, and of some complex milieus on the development of embryonic cells (neural 



plate, eye vesicle, eye cup) in isolated state, monolayers and aggregates of different sizes. 



Rana arvalis, R. temporacia, R. ridibunda (Anura), Amby stoma mexicanum (Urodela), 



Gallus domesticus (Aves) (in collaboration with G. V. LOPASHOV) 

 HORI, R. D.Sc. — Biol. Inst., Fac. of Lib. Arts, Toyama Univ., Gofuku 3190, TOYAMA. 



Japan 

 a Sodium and potassium content, ionic permeability and fertilization phenomena (radio- 

 isotope studies). Hemicentrofus putcherrimus (Echinoidea), Otyzias latipes (Teleostei) 

 HORIKAWA, M. D.Sc. — Dept. of Genet., Univ. of Wisconsin, MADISON, Wis. 53706, 



U.S.A. 

 HORK?, Z. M.D. — Dept. of Obstetrics and Gynecol., Med. School, Univ. of Greifswald, 



X 22 GREIFSWALD. Deutsche Demokratische Republik 

 a Measuring of the basal membrane in diabetic placenta (electron microscopy). Homo sapiens 



(Primates) 

 h Morphological study of villi at term in diabetic placenta. Homo sapiens (Primates) 

 c Clinical consequences of placental morphology in diabetes (relationship between the 



morphology of term- villi and the outcome of pregnancy). Homo sapiens (Primates) 

 HORN, E. C. Ph.D., Prof. — Dept. of Zool.. Duke Univ., DURHAM, N.C. 27706, U.S.A. 

 a Isolation and characterization of cytoplasmic histones in embryonic cells. (Amphibia) 

 b Hemolymph protein changes and carotenoid pigment distribution during the reproductive 



cycle. Callinectes sapidus (Decapoda, Crustacea) 

 c Ontogenesis of the immune mechanism. (Marsupialia) 

 HORNBY, Miss J. E. B.Sc. — Dept. of Zool., Fac. of Sci., Univ. of Reading, READING, 



Berks., England 

 a Biophysical properties of the surface of embryonic cells. (Aves; Mammalia) 

 HORSFALL, W. R. Ph.D.. Prof. — Dept. of Entomol., Univ. of Illinois, 320 Morrill Hall, 



URBANA, 111. 61801. U.S.A. 

 a Imaginal teratogenesis by thermal stress (morphological and histological changes). Aedes 



sierrensis. A. punctor, A. communis, A. stimulans, A. nigdpes, A. impiger (Culicidae, 



Dipfera) 



• HORSTADIUS, S. Fil.Dr., Prof. — Zool. Inst.. Univ. of Uppsala, UPPSALA. Sweden 

 a Determination in the egg; analysis of the gradients and the processes behind them. 



(Echinoidea) 

 h The effect of various antimetabolites on embryonic development. (Echinoidea) 

 HORSTMANN, E. Dr.med.et phil.. Prof. — Anat. Inst, der Univ. Hamburg, Martinistr. 52, 



2000-HAMBURG'Eppendorf, Deutsche Bundesrepublik 

 a Spermatozoen und ductus epididymidis. Lepus cuniculus, Canis familiaris, Homo sapiens 



(Mammalia) 

 HORSTMANN, H.-J. Dr.phil.nat. — Physiol. -Chem. Inst, der Univ. Erlangen-Niirnberg, 



Wasserturmstr. 5. ERLANGEN, Deutsche Bundesrepublik 

 HORTON. K. M. A.B. — Dept. of Biol., Grad. School of Arts and Sci.; Lab. of Histol. and 



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

 a DNA synthesis during oogenesis. Xenopus laevis (Anura) 

 HORVATH. Miss C. M.D. — Inst, of Histol. and Embryol., Med. Univ., Tiizolto u. 58. 



BUDAPEST IX, Hungary 

 a Teratogenesis. Gallus domesticus (Aves), Rattus raffus (Rodentia) 

 HOSHI, M. M.Sc. — Biol. Inst., Coll. of Gener. Education. Univ. of Tokyo, Komaba. 



Meguro-ku, TOKYO, Japan 

 a Changes of cell surface during development. (Echinoidea) 

 HOSHINO. K. M.D. — Research Inst, of Environm. Med., Nagoya Univ., Furo-cho, 



Chikusa-ku. NAGOYA, Japan 

 a Effects of ionizing radiation upon the embryo. Mus musculus (Rodentia) (in collaboration 



with Y. KAMEYAMA and U. MURAKAMI) 

 b Effects of some chemical substances upon the embryo. Mus musculus, Rattus norvegicus 



(Rodentia) (in collaboration with Y. KAMEYAMA and U. MURAKAMI) 

 c The skeletal development of the embryo. Mus musculus, Rattus norvegicus (Rodentia) 



(in collaboration with U. MURAKAMI) 

 HOSHINO. K.. D.Med.Sc. Prof. — Dept. of Anat.. Health Sci. Centre. Univ. of Western 



Ontario, LONDON, Ontario. Canada 

 a Development and growth of mammary glands after prenatal exposure to hormones and 



carcinogen. Mus musculus (Rodentia) 



70 



