Hoge 44 Hook 



HOGEWONING, C. H. — Lab. for Exper. Histol.. Fac. of Med.. Univ. 



of Leyden. Wassenaarseweg, Boerhaavekwartier, LEIDEN, Holland. 



a. Influence of estrogens on the development and calcification of embryonic 



endosteal tissue in vitro. Gallus domesticus (Aves) 

 h. Influence of vitamine D3 on the development and calcification of en- 

 dosteal bone and cartilage in vitro. Gallus domesticus (Aves) 

 HOGUE, Miss M. J. A.B.. Ph.D.. Assoc. Prof. — Dept of Anat., School 

 of Med.. Univ. of Pennsylvania, PHILADELPHIA 4. Pa, U.S.A. 

 a. Study of neurons and glia cells from the different parts of the brain, 

 especially from the cerebellum of human fetuses, newborn babes and 

 adult humans. Homo (Primates) 

 HOLM, K. A. Fil. Dr — Zool. Inst., Uppsala Univ., UPPSALA. Sweden. 

 a. Experimental investigation of the embryo (determination, prospective 

 significance of embryonic areas). (Araneae, Arachnoidea) 

 HOLMDAHL, D. E. Med. Dr. Prof. — Anat. Inst., Univ. Uppsala, UPP- 

 SALA, Sweden, 



a. Untersuchungen iiber die friihc Korperentwicklung. (Vertebrata) 



b. Riickenmarkentwicklung. (Vertebrata) 



c. Neuralleistenentwicklung und Mesenchymbildung. (Vertebrata) 



d. Entwicklung der Blutgefasse und des Blutes. (Vertebrata) 



e. Spina Bifida-Genese. (Vertebrata) 



f. Teratomgenese. (Vertebrata) 



g. Probleme der Korperentwicklung. (Amniota) 



h. Morphogenese des Plexus chorioideus. (Vertebrata) 

 HOLMGREN, N. F. Dr Sc. Prof. (Emer.) — Zootom. Inst., Univ. of 

 Stockholm, 116 Drottninggatan, STOCKHOLM. Sweden, 

 a. Origin of tetrapods; the hmb problem. (Tetrapoda) 

 HOLTER. H. Ph.D. — Cytochem. Dept. Carlsberg Lab.. 8 Gl. Carls- 

 bergvej.. COPENHAGEN Valby, Denmark, 

 a. Enzyme development in embryos. ( Echinodermata) 



h. Study with Cartesian divers of mitotic rhythm in metabohsm during 

 cleavage period. (Echinodermata and A.mphibia) (in collaboration with 

 E. ZEUTHEN) 

 HOLTFRETER. J. K. F. Ph.D.. Prof. — Dept of Biol., Coll. of Arts and 

 Sci.. Univ. of Rochester, ROCHESTER 3. N.Y.. U.S.A. 



a. Effects of carcinogens on successive developmental stages of embryos. 

 Ambly stoma (Urodela) , Rana pipiens and Xenopus laevis (Anura) 



b. Relationship between size of inductive graft and size and pattern of 

 induction. Amblystoma (Urodela) and Rana (Anura) 



HOLTZER. H. Ph.B.. B.S. — Dept of Zool., Univ. of Chicago 37, 111., 

 U.S.A. 



a. Development of regional functional properties in the spinal cord, tested 

 by defect and transplantation experiments. (Urodela) (under direction 

 of P. A. WEISS) 



b. Selectivity in outgrowth and terminations of embryonic nerves. (Verte^ 

 brata) (under direction of P. A. WEISS) 



HOOKER, D. Ph.D., Prof. — Dept of Anat., School of Med., Univ. of 

 Pittsburgh, PITTSBURGH 13, Pa.. U.S.A. 



a. Study of the physiological responses of fetuses. Homo (Primates) 



b. Study of the reactivity of the fetus to exteroceptive stimulation. Homo 

 (Primates) 



