CHEVREMONT. M. Prof. — Lab. d'Histol. et d'Embryol., Fac. de Med., 

 20, Rue de Pitteurs, LIEGE, Belgique 



a. Etude cytologique et cytochimique du mecanisme de la mitose et de la 

 preparation a la mitose. 



b. Etude du chondriome. 



c. Etude des processus de regeneration. 



CHIQUOINE, A. D. B.A., Ph.D. — Dept. of Anat., Washington Univ.. 



ST. LOUIS, Mo., U.S.A. 

 CHISHIMA, K. Prof. — Lab. for Biol., Gifu Univ., Nagara, GIFU, Japan 



a. New cell (spermatogonia) -formation from living substances (fatty 

 tissue). Bombijx mori, Pachytilus danicus (Insects) 



b. New cell (hemocytoblast) -formation from yolk spheres in embryo and 

 tadpole. Rana nigromaculata (Anura) 



c. New formation of sponge cell from an aggregated mass of zoochlorellas. 

 Spongilla semispongilla (Porifera) 



d. New formation of blood cell in digestive tract. (Amphibia, Aves, Mam- 

 malia) 



CHOVNICK, A. A.B., M.A., Ph.D. — Long Island Biol. Lab., COLD 

 SPRING HARBOR, N.Y., U.S.A. 



a. Developmental effects of pseudoallele loci. Drosophila melanogaster 

 (Dipteva) 



b. Nutritional requirements associated with morphological mutants and 

 lethals. Drosophila melanogaster (Diptera) 



c. Parameters in recombination. Drosophila melanogaster (Diptera) 



d. Gene conversion. Drosophila melanogaster (Diptera) 

 CHOWDHURY, Miss M. B.Sc. (Hons) — Dept. of Zool., Presidency Coll., 



College St., CALCUTTA 12, India 

 a. Physiology of cell-contact. (Porifera) (in collaboration with S. MOO- 



KERJEE and B. GANGULY) 

 CHUANG HSIAO HUI Dr.rer.nat, Dr.rer.nat.habil., F.I.I.E. — Lab. of 



Developm. Physiol., Inst, for Exper. Biol., Acad. Sinica, 320 Yo Yang 



Road, SHANGHAI, China 

 CIGADA (LEONARDI), Mrs. M. Dott.Sci.Biol., M.I.I.E. — 1st. di Zool. 



e Anat. Comp., Univ. di Milano, Via Celoria 10, MILANO, Italia 

 CITTERIO, P. Grad.stud. — 1st. di Zool. e Anat. Comp., Univ. di Milano, 



Via Celoria 10, MILANO, Italia 

 CLARK, H. B.A., Ph.D., Prof. — Dept. of Zool., Univ. of Connecticut, 



STORRS, Conn., U.S.A. 



a. Nitrogen metabolism of embryos. (Reptilia, Aves) 



b. Factors affecting reaggregation of segregated cells in tissue culture. 



c. Phase contrast cinematography of differentiating cells. Gallus domesticus 

 (Aves) 



d. Role of RNA in embryonic differentiation. 



CLAVERT, J. M. J. Dr. en Med., Dr. es Sci., M.I.I.E., Prof. — Inst. d'Em- 

 bryol., Fac. de Med., 1 Place de l'Hopital, STRASBOURG, France 



a. Formation de l'oeuf (Role de l'hormone femelle dans la vitellogenese). 

 (Pisces), (Reptilia), Columba spec, Anas spec, Gallus spec. (Aves) 



b. Recherches sur le determinisme de la symetrie bilaterale. (Pisces, Reptilia, 

 Aves) 



27 



