Luyendijk 58 Mark 



b. Development of hypothalamic nuclei in man and rodents. (Mammals) 

 MALAN, Miss M. E. D.Sc. — Zool. Inst., Univ. of Stellenbosch, STEL- 

 LENBOSCH, South Africa, 

 a. Some developmental stages of the skull and the palate. Nyctisyrigmus 

 pectoralis (Caprimulgidae, Aves) 

 MANDL, Miss A. M. B.Sc. — Dept of Anat, The Med. School, Birmingham 

 Univ., Edgbaston, BIRMINGHAM 15, England, 

 a. Study of oogenetic function. Rodents (Mammals) 

 MANGOLD, O. Dr, Prof. — Heiligenberg-Inst. (Abtlg. Mangold), (17b) 

 HEILIGENBERG, Kreis Oberlingen/Bodensee, Deutschland (Fran- 

 zosische Zone). 



a. Entstehung und Determination der Geschlechtszellen und Gonaden bei 

 Urodelen (gemeinsam mit O. STARK). Triton (Amphibien) 



b. Determinationsvorgange in der Gastrula und Neurula von Triton. 

 (Amphibien) (gemeinsam mit Frl. H. WAECHTER) 



MANHOFF, L. J. — Dept of Zool., Duke Univ., DURHAM, N.C., U.S.A. 



a. A simplified technique for micro-electrocoagulation. Using a platinum 

 electrode and hyfrecator, accurate coagulation is controlled. Domestic 

 chick (Aves) (in collaboration with M. W. JOHNSON) 



b. A simple micromanipulator, (in collaboration with M. W. JOHNSON) 

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



W.C. 2, England, 

 a. Embryology of Peripatus. (Onychophora) 

 MAPP F. E. M.A., M.S. — Dept of Zool., Univ. of Chicago, CHICAGO 

 37, 111., U.S.A. WEISS) 



a. Regeneration of notochord. (Amphibia) (under direction of P. A. 

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

 Hoyera, KRAKOW, sw. Anny 6, Poland, 

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

 domesticus (Aves) 

 MARDONES, Miss E. — Dept de Med. Exper. del Servicio Nacional de 

 Salubridad, Av. Orarrazaval 849, SANTIAGO, Chile, South America. 



a. Hormonal interrelations between ovary and hypophysis. Ovarian grafts 

 in the spleen. Cavia cob. (Mammalia) (in collaboration with A. LIP- 

 SCHUTZ, R. IGLESIAS, S. BRUZZONE and Miss M. BARA- 

 KONA) 



b. Influence of steroids on the gonadotrophic function of the hypophysis; 

 and on the follicular development of the ovary. Ovarian grafts in the 

 spleen; with the simultaneous action of steroids absorbed from beneath 

 the skin, or absorbed from the spleen; and other devices. Cavia cob. 

 (Mammalia) (in collaboration with A. LIPSCHUTZ, R. IGLESIAS, 

 S. BRUZZONE and Miss M. BARAKONA) 



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

 a. On the influence of some embryo-extracts on unfertilized eggcells which 

 have been induced to parthenogenetic development by chemical stimu- 

 lation. Albino rat (Mammals) 

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

 BOR, Mich., U.S.A. 

 a. Role of the tissue environment in determining cellular differentiation. 

 The effects of normal metabolic inhibitors on differentiation of pigment 

 cells in vitro. Gallus domesticus (Aves) 



