Holter 46 Hubl 



HOLTER. H. Ph.D. — Cytochcm. Dept. Carlsberg Lab., 8 Gl. Carlsbergvej, 

 COPENHAGEN Valby. Denmark 



a. Enzyme development in embryos. (Echinodermata) 



b. Cytochemistry. (Protozoa) 



HOLTFRETER. J. K. F. F.I. I.E., Ph.D., Prof. — Dept of Biol.. Coll. of 

 Arts and Sciences. Univ. of Rochester, ROCHESTER 3, N.Y., U.S.A. 

 a. Effects of X-rays on some embryological processes. Ambystoma punc- 

 tatiim and Rana pipiens (Amphibia) 



HOLTZER. H. Ph.D. — Dept of Anat., School of Med., Univ. of Penn- 

 sylvania. PHILADELPHIA 4, Pa, U.S.A. 



a. Role of spinal cord in the morphogenesis of the vertebral column. Am- 

 bystoma (Urodcla) 



b. Factors influencing the organization of the neural action systems in the 

 brachial spinal cord. Ambystoma (Urodela) 



c. Role of the spinal cord in tail regeneration. Ambystoma (Urodela) 

 HONIO. Miss B. — Dept of Zool.. Univ. of Connecticut, STORRS, Conn., 



U.S.A. 

 a. Placental function. Thammophis s. sirtalis (Serpentes) (in collaboration 

 with H. CLARK) 

 HOOKER. D. Ph.D.. Sc.D.(Hon.). 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) 



HORN, E. C. B.S., A.M., Ph.D.. Prof. — Dept of Zool.. Duke Univ.. 

 DURHAM. N.C., U.S.A. 

 a. Organogenesis during development and changes at metamorphosis. 



Ichthyomyzon (Cyclostomata) 

 h. Tail regeneration in Ammocoetes. Ichthyomyzon (Cyclostomata) 

 HORSTADIUS. S. F.I. I.E., Fil.Dr. Prof. — Zool. Inst., Uppsala Univ., 

 UPPSALA, Sweden 



a. Determination in the egg: Analysis of the gradients and the processes 

 behind them. (Echinoidea) 



b. Determination within the head. Ambystoma (Urodela) 

 HOWORKA. E. I. M.D.. Ph.D. — Klinika Ginekologiczna Poznan. Polna 



33. POZNAN, Poland 



(no data received over some years) 

 HUBER. W. Dr es Sci. — Lab. de Zool. dc la Fac. des Sci. et Lab. d'Em- 



bryol. et Teratol. exper. du C.N.R.S., Inst, de Zool. et de Biol, gen., 



12 Rue de lUniversite, STRASBOURG, France 

 a. Developpement de la tete. Etude morphologique et experimentale de 



developpement de la forme encephalique en rapport avec Ic crane; cour- 



bure et redressemcnt de la tete; position des yeux. Analyse de races a 



forme encephalique aberrante. Gallus domesticus (Aves) 

 HUBL. H. Dr rer.nat. — Zool. Inst, der Univ., Naturw. Fak., Rontgenring 



10, WORZBURG. Deutschland 



a. Einfluss des Colchicins auf die Regeneration. Lumbricus und Tubifex 

 (Oligochacta) 



b. Untersuchungen iiber die neurosekretorischen Zellen im Gehirn und 

 dcren Einfluss auf die Regeneration. (Lumbricidae, Oligochaeta) 



