HICKS. S. P. M.D. — Lab. of Pathol., New England Deaconess Hosp.. 



195 Pilgrim Road, BOSTON 15. Mass., U.S.A. 

 HOLLANDER. W. F. Dr — Dept of Genetics, Iowa State Coll., AMES, 



Iowa. U.S.A. 

 IGNATJEVA. Mrs. G. M. Cand. Biol. Sci. (address see p. 7) 



a. The hatching enzyme and the conditions of hatching. Huso huso, 



Acipenser giildcnstadti. A. stellatus ( Acipenseriformcs, Chondrostei) 

 KINDAHL. Miss M. E. Phil. Dr — Linnegatan 22, STOCKHOLM O, 



Sweden 

 LOPASHOV, G. V. Dr. Biol. Sci., Prof, (address see p. 7) 



a. Complex analysis of conditions of embryonic development of the parts 

 of the eye rudiment. Triturus taeniahis, T. vittatus, Amby stoma mexi- 

 canum (llrodela) , Rana arvalis, R. esculenta. R. ridibunda, Bufo viridis, 

 Pclobatcs fuscus (Anura) 



b. Analysis of significance of intracellular components and of the com- 

 position of the medium on the development of embryonic cells (ectoderm, 

 neural plate, eye rudiment). Amby stoma mexicanum (llrodela), Rana 

 arvalis, R. ridibunda etc. (Anura), Misgurnus fossilis, Cyprinus carpio, 

 Ncmacheilus barbatulus, Cyprinodontid spp. (Pisces) 



c. Analysis of sources and conditions of retina regeneration in tadpoles. 

 Bufo viridis, Rana arvalis (Anura) 



MAY, R. M. Prof. — Lab. de Biol. Animale, Univ. de Paris, 12 Rue Cuvier, 



PARIS Ve, France 

 f MELLANBY, Sir Edward — LONDON, England (U.K.) 



(Deceased) 

 MENSCHIK, Z. B.A., M.D., D.Sc. L.M.C.C, Prof. — Dept of Anat., 



School of Med., Georgetown Univ., 3900 Reservoir Road, N.W., 



WASHINGTON 7, D.C., U.S.A. 

 MINA. E. Y. M.D. — Dept of Anat, Fac. of Med., ALEXANDRIA, Egypt 

 OSTRJAKOVA— VARSHAVER, Mrs. V. P. Cand. Biol. Sci. (address see 

 p. 7) 



a. Cytology of experimental heat androgenesis. Bombyx mori L. (Lepi- 

 doptera) 



b. Cytology of experimental polyploidy. Bombyx mori L. (Lepidoptera) 



c. Artificial parthenogenesis and androgenesis. Bombyx mori L. (Lepi- 

 doptera) 



PEPPER, Miss F. J. B.Sc, Ph.D. — Dept of Zool. and Comp. Physiol.. 



Birmingham Univ., Edgbaston, BIRMINGHAM 15, England (U.K.) 

 POHLEY, H.-J. Dr — Inst, fur Entwicklungsphysiologie der Univ. Koln, 



Amsterdamerstr. 36. KOLN/Riehl, Deutschland 

 REXED, B. M.D.. Prof. — Anat. Inst., Univ. Uppsala, UPPSALA Sweden 

 RICHTER, Miss W. E. Biol. Cand. — Afd. Zool., Biol. Lab., Vrije Univ.. 



Rapenburgerstraat 128, AMSTERDAM, Holland 

 SABBADIN, A. Dr — temporarily: Hubrecht Laboratory, Janskerkhof 2, 



UTRECHT. Holland 

 SAMBUICHI, H. Dr — Zool. Lab., Fac. of Sci., Hiroshima Univ., Higa- 



shisenda-cho. HIROSHIMA, Japan 

 SENO, T. B.M. — Dept of Anat., School of Med., Gunma Univ., MAE- 



BASHI, Japan (until October 1957: Dept of Biol., The Johns Hopkins 



Univ.. Charles and 34th Sts. BALTIMORE 18, Md. U.S.A.) 



