a. Gametogenesis. (Arthropoda) 



b. Development of the gonads. (Insecta) 



c. Biochemistry of embryogenesis. (Insecta) 



COLWIN, A. L. Ph.D., M.I.I.E., Prof. — Dept. of Biol., Queens Coll., 

 FLUSHING 67, L.I., N.Y., U.S.A. 

 a. Fertilization: sperm-egg association and sperm penetration; cortical 

 changes; membrane changes, lytic aspects. Living material and electron 

 microscope studies. (Enteropncusta, Echinodermata, Annelida) (in col- 

 laboration with Mrs. L. H. COLWIN) 



COLWIN, Mrs. L. HUNTER Ph.D., M.I.I.E., Prof. —Dept. of Biol., 

 Queens Coll., FLUSHING 67, L.I., N.Y., U.S.A. 

 a. Fertilization: sperm-egg association and sperm penetration; cortical 

 changes; membrane changes, lytic aspects. Living material and electron 

 microscope studies. (Enteropneusta, Echinodermata, Annelida) (in col- 

 laboration with A. L. COLWIN) 



CONAWAY, C. H. B.S., Ph.D., Prof. — Dept. of Zool., Univ. of Missouri, 

 213 Lefevre Hall, COLUMBIA, Mo., U.S.A. 



CORLISS. C. E. B.S., M.S., Ph.D. — Div. of Anat., Med. Units, Fac. of 

 Biol. Sci., Univ. of Tennessee, MEMPHIS 3, Tenn., U.S.A. 



a. Study of mitotic activity and its relation to morphogenesis in young 

 embryos. Mus norvegicus albinus (Rodentia) 



b. Colchicine toxicity to embryonic tissue. Mus norvegicus albinus (Ro- 

 dentia) 



c. Study of mitotic activity in the central nervous system and its relation 

 to morphogenesis and virus susceptibility. Gallus domesticus (Aves) 



CORNER, G. W. A.B., M.D., D.Sc, F.I.I.E., Prof. — Rockefeller Inst, for 

 Med. Research, 66th St. and York Ave., NEW YORK 21, N.Y., U.S.A. 



CORNER, G. W., Jr. — Dept. of Embryol., Carnegie Inst, of Washington, 

 115 W. University Parkway, BALTIMORE 10, Md., U.S.A. 



a. Anatomical and radiological studies of circulation in the maternal pla- 

 centa. Macaca mulatta, Homo sapiens (Primates) (in collaboration with 

 Miss E. M. RAMSEY and M. W. DONNER) 



b. Determinations of blood, amniotic and intervillous space pressures 

 throughout pregnancy. Macaca mulatta (Primates) (in collaboration 

 with Miss E. M. RAMSEY and W. N. LONG) 



CORNER, M. A. B.S. — Dept. of Zool., Columbia Univ., NEW YORK 27, 

 N.Y., U.S.A. 

 a. Properties of isolated neural plate regions through the neurula stages by 

 means of the explant technique. 1. Neural structures formed. 2. Formation 

 of sensory or motor nerves and functional synapses. 3. Spontaneous and 

 reflex (touch) discharges as seen by the pattern of muscle contractions. 

 Ambystoma mexicanum, Xenopus laevis (Amphibia) 



COSTELLO, D. P. Ph.D., F.I.I.E., Prof. — Dept. of Zool., Univ. of North 

 Carolina, CHAPEL HILL, N.C., U.S.A. 



a. Studies in experimental cytology. Polychoerus spec. (Acoela, Turbel- 

 laria), Chaetopterus pergamentaceus (Polychaeta) (in collaboration with 

 Miss C. HENLEY) 



b. Effects of antimitotic agents on eggs. Chaetopterus pergamentaceus 

 (Polychaeta) (in collaboration with Miss C. HENLEY) 



c. Studies on the centriole. Polychoerus carmelensis (Acoela, Turbellaria) 



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