a. Induction of premature cleavage furrows by centrifugation. Arbacia 

 punctulata (Echinoidea) 



b. Mechanisms of cell division in marine eggs. Arbacia punctulata (Echi- 

 noidea) 



c. Isolation and characterization of contractile proteins from dividing eggs. 

 Arbacia lixula (Echinoidea) 



d. Isolation of mitotic apparatus from eggs after treatment with high hydro- 

 static pressure. Arbacia punctulata (Echinoidea) 



e. Effects of pressure on the ATP metabolism of dividing eggs. 

 MARTIN, Miss B. A. M.A., Ph.D. — Dept. of Biol., Brooklyn Coll., Bed- 

 ford Ave. and Ave. H, BROOKLYN 10, N.Y., U.S.A. 



a. Cytology and embryology. (Insecta) 

 MARTIN, B. F. M.D., B.Ch., B.Sc. — Dept. of Anat., Fac. of Med., Univ. 

 of Sheffield, SHEFFIELD, England 

 a. Histochemical studies. (Mammalia) 

 MARTIN, P. — Lab. d'Anat. fonctionnelle et de Neuro-anat., Fac. de Med., 

 45 Rue des Sts. Peres, PARIS Vie, France 

 a. Chorde dorsale. Homo sapiens (Primates) 

 MARTINET, Mrs. M. Dr. es Sci. — Lab. d'Embryol., Fac. de Med., 45 Rue 

 des Sts. Peres, PARIS Vie, France 



a. Influence teratogene des intoxications. Mus rattus (Rodentia) 



b. Influence teratogene de l'hypervitaminose A. Mus rattus, Mus musculus, 

 Cauia cobaya (Rodentia), Oryctolagus cuniculus (Lagomorpha) 



c. Influence teratogene des rayons X. Mus musculus (Rodentia) 



MARTINOVITCH, P. M.I.I.E. — Postanski fah 522, BELGRADO, Yu- 

 goslavia 



MASETTI ZANNINI, Miss A. Dr. — 1st. di Zool., Via S. Giacomo 9, 

 BOLOGNA, Italia 

 a. Gametogenesis and cytosexual differentiation. Helix cincta (Pulmonata, 

 Gastropoda) 



MASSART, C. M.D., Prof. — Inst, of Anat. and Histoembryol., Univ. of 

 Pisa, Via Roma 33, PISA, Italia 



a. Studies of the development of pharyngeal derivatives. (Microchiroptera) 



b. Studies on the development of uterus and vagina. (Microchiroptera) 



c. Developmental morphology of the bursa pharyngea. (Microchiroptera) 



d. Studies on the developmental morphology of Chiewitz's organ. (Micro- 

 chiroptera) 



MASUI, Y. Dr.Sc. — Biol. Lab., Dept. of Sci., Konan Univ., Okamoto, 

 KOBE, Japan 



a. Studies on mesodermal differentiation. Triturus spec, Hynobius spec, 

 Rana spec, Bufo spec (Amphibia) 



b. Erythropoiesis. Triturus spec, Hynobius spec, Rana spec, Bufo spec 

 (Amphibia) 



MATEJKA, M. MUDr., C.Sc — Inst, of Histol. and Embryol., Fac. of 

 Med., Charles Univ., Karlovarska 48, PLZEN, Czechoslovakia 

 a. The morphogenesis of the genital organs from the standpoint of evolu- 

 tionary morphology. (Amniota, including Homo sapiens) 

 MATSUDA, Mrs. N. M.A. — Biol. Inst., Fac of Sci., Nagoya Univ., Chi- 

 kusa-ku, NAGOYA, Japan 

 a. Environmental factors (particularly temperature) affecting the develop- 

 ment of the ,, fused" character of vertebrae. Oryzias latipes (Teleostei) 



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