Mangold 59 Maz 



b. Determinationsvorgangc in der Gastrula und Neurula. Triton (Urodela) 



(gemeinsam mit Miss H. WAECHTER) 



c. Einfluss ungiinstiger aussercr Bedingungen auf Entwicklung. Triton 

 (Urodela) (gemeinsam mit Miss H. ^VAECHTER) 



d. Regulationsvorgange an experimentell hergestellten eineiigen Zwillingen. 

 Triton (Urodela) (gemeinsam mit I. TESTA) 



MANHOFF, L. J. M.D. — Rob't B. Green Hosp.. SAN ANTONIO, 

 Texas, U.S.A. 

 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, Annelida) 

 MARCHLEWSKI. J. H. Dr — Zaklad Anat. Porownawczej U.J. im. H. 

 Hoyera. sw. Anny 6, KRAKOW, Poland. 



a. Artificial inseminations with semen stored in different conditions. Gallus 

 domesticus (Aves) 



b. The rearing of European forms. Tetraonidae (Galliformes, Aves) 

 MARJANEN, P. — Zool. Lab., Univ. of Turku. TURKU, Finland. 



(no embryological work in progress) 

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



ARBOR, Mich., U.S.A. 

 a. Influence of cellular genotype on substrate specificity of tyrosinase in 



melanoblasts cultured in vitro. Gallus domesticus (Aves) and Pero- 



myscus maniculatus (Rodentia) 

 h. Role of nucleic acid synthesis in cellular differentiation. Ascidia nigra 



(Urochordata and Lytechinus variegatus (Echinoidea) 



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

 pipiens (Amphibia) 



MARLIER, G. — Lab. de Zool., Fac. des Sci., Inst, de Zool. Torley-Rous- 

 seau, Univ. libre de Bruxelles, 50 Av. F. D. Roosevelt. BRUXELLES. 

 Belgique. 



(no data received on Nov. l^S 1952) 

 MASLIDA, H. — Lab. of Embryol. and Exp. Morphol., Zool. Inst., Dept 

 of Sci.. Kyoto Univ.. KYOTO, Japan, 

 a. Behaviour of phosphor in early development. Triturus pyrrhogaster 



(Urodela) 

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

 c. Regional differences of induced structure. 

 MASY. Miss S. — Inst. d'Anat.. Univ. de Louvain, 38 Rue dcs Recollets, 

 LOUVAIN. Belgique. 

 a. Experimental analysis of the development of the appendicular skeleton 



in the embryo. Gallus (Aves) 

 h. The peripheral nervous system of the head of a young embryo. Homo 

 (Primates) 

 MATHER, W. B. M.Sc. — Zool. Dept. Univ. of Queensland. George Str., 

 BRISBANE, Queensland, Australia, 

 a. Superimplantation. Oryctolagus cuniculus L. (Rodentia) 

 MAZIA, D. Ph.D. — Dept of Zool., Univ. of Cahfornia. BERKELEY 4, 

 Gal., U.S.A. 

 (no data received on Nov. !«*, 1952) 



