Ferr 30 Flex 



FERREIRA, W. A. B.S. — Dept de Histol. y Embriol., Fac. de Med., 

 MONTEVIDEO, Uruguay, S. America. 



a. Neuro-embryology. Bufo arenarum (Amphibia) 



b. Experimental analysis of the development of the heart. Bufo arenarum 

 (Amphibia) (in collaboration with R. E. GONZALEZ MARINO) 



FILOGAMO, G. Dr — Inst, of human Anat., Corso Massimo d'Azeglio 52, 

 TORINO, Italy. 



a. Study of the consequences of the removal of the secundary optic vesicle 

 on the organogenesis and histogenesis of the optic lobe. Chick (Aves) 



b. Histogenesis of the nervous cells of the sympathetic nervous system of 

 the intestinal tract. Sheep (Mammals) 



FISCHBERG, M. Dr Phil. — Genet. Lab., Anim. Breeding and Genet. 

 Res. Organ., Inst, of Anim. Genet., West Mains Rd, King's Buildings, 

 EDINBURGH 9, U.K. 



a. Experimental heteroploidy and parthenogenesis in newts. Heteroploid 

 newt hybrids — developmental potentialities and expression of species 

 characters, sex determination. Triton alpestris and T. palmatus (Am- 

 phibia) 



b. Heteroploidy in mammals. Spontaneous heteroploidy — analysis of 

 factors involved. Induced heteroploidy — methods of production. Via- 

 bility of polyploid embryos. Physiological embryology of polyploid 

 embryos. Mus musculus (in collaboration with R. A. BEATTY) 



c. Transplantation of mammalian embryos. Mus musculus (in collaboration 

 with R. A. BEATTY) 



FISCHER, Miss I. Dr — Dept of Zool., Univ. of Chicago, CHICAGO 37, 



111., U.S.A. 

 a. Fate of tissue culture cells introduced into embryos after prolonged 



cultivation in vitro. Gallus domesticus (Aves) (in collaboration with 



P. A. WEISS) 

 FISK, A. M.Sc. — St Mary's Hosp., Med. School, Norfolk Place, Pad- 



dington, LONDON W. 2, England. 



a. The development of the ear and associated structures in the Lamprey. 



b. The development of parachordals and trabeculae in the Lamprey. 

 (Cyclostomes) (in collaboration with Miss M. TRIBE) 



c. A critical note on the development of the Vertebrate kidney, (in col- 

 laboration with Miss M. TRIBE) 



FITZGERALD, L. R. Ph.D. — Univ. of Tennessee, Fac. of Biol. Sci., 

 Med. Div., MEMPHIS 3, Tenn., U.S.A. 



a. Development of enzymes in grasshopper egg and embryo. Melanoplus 

 differentialis (Orthoptera) 



b. Enzyme activities of embryo and extra-embryonic membranes of chick 

 and rat. (Aves and Mammalia) 



FLEMING, W. R. B.S. — Physiol. Lab., Coll. of Sci., Univ. of Portland, 



PORTLAND 3, Ore., U.S.A. 

 a. Investigation of the chemical nature of the fertilization membrane. 



Strongylocentrotus purpuratus (Echinoderms) 

 FLEXNER, L. B. B.S., M.D. Member — Dept of Embryol., Carnegie Inst. 



of Washington, Wolfe and Madison Strs, BALTIMORE 5, Md, U.S.A. 



a. Enzyme activities in fetal liver and cerebral cortex. Cavia cobaya (Mam- 

 malia) 



b. Placental transfer using radioisotopes. Cavia cobaya (Mammalia) 



