a. Experimental production of anomalies of the fourth and sixth aortic 

 arches by microelectrocoagulation in 3-day embryos. Gallus (Aves) 

 MANTON. S. M. F.R.S.. M.A.. Sc.D. — King's Coll., Strand, LONDON 

 W.C.2, England (U.K.) 



a. Embryology. Peripatopsis (Onychophora, A.nnelida) 



b. General embryology. Polydesmus (DiplopodaJ 



MARCHAND, J. M. M.Sc. Ph.D. — Division of Fisheries, Beach Road, 



Sea Point, CAPE TOWN. South Africa 



(no embrvological work in progress) 

 MARCONNET, R. — Lab. d'Histol., Dep. d'Embryol.. Fac. de Med.. 31 



Rue Lionnois, NANCY (Meurthe & Moselle), France 

 MARIN, G. Dr — 1st. di Zool. e Anat. comp.. Fac. di Sci.. Via Loredan 10. 



PADOVA, Italia 

 a. Early development and sex differentiation of gonads. Gallus (Aves) 

 MARKERT. C. L. Ph.D. — Dept of Zool., Univ. of Michigan. ANN 



ARBOR, Mich., U.S.A. 



a. The role of genotype and embryological history in the utilization of 

 specific substrates for melanogenesis. Mas musculus (Rodentia) 



b. Influence of cell population on melanoblast differentiation. Mus musculus 

 (Rodentia) 



c. Changes in synthetic ability during cellular differentiation. Gallus domes- 

 ticus (Aves) and Mus musculus (Rodentia) 



d. The effects of metabolite analogs on embryonic development. Rana 

 pipiens (Anura) 



MARSLAND. D. A. B.Sc. M.S.. Ph.D. — Washington Square Coll.. New 

 York Univ., Washington Square, NEW YORK, N.Y., U.S.A. 



a. The mechanism of cell division (cytokinesis). 



b. Energetics of cytokinesis. 



c. Temperature-pressure studies on the furrowing strength of various 

 marine 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 (U.K.) 

 a. Histochemical studies. (Mammalia) 

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

 des Sts Peres. PARIS Vie, France 



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



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



c. Influence teratogene de I'hypervitaminose A. Mus rattus (Rodentia) 

 MASUDA, H. B.Sc. — Dept of Biol.. Naniwa Univ., Sakai, OSAKA. 



Japan 



a. Induction in regenerating blastema. Triturus pyrrhogaster (Urodela) 



b. Regional differences of induced structure. 



MASUI, Y. — Biol. Lab.. Dept of Lit. and Sci., Konan Univ.. KOBE. Japan 

 a. Influence of LiCl upon the inductive specificity of the organizer. Triturus, 



Hynobius. Rana, Bufo (Amphibia) 

 MATEJKA. M. Dr — Inst, of Histol. and Embryol. Fac. of Med.. Charles 



Univ.. Karlovarska 48, PLZEN, Czechoslovakia 



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