Toivoncn-llrb 



c. Thyroid gland and adcnohypophysis in delayed metamorphosis. Xenopus 

 lacvis (Aniira) (in collaboration with L. O. SAX£N) 



d. Induction of mesoderm by killed inductors. Tritiirus (Urodela) 



c. The inductive action of malignant tumors. Triturus (Urodela) (in col- 

 laboration with L. O. SAXfiN ) 

 TOMITA. H. B.Sc. M.A. — Biol. Inst., Fac. of Sci.. Nagoya Univ., Chigu- 

 sa-ku, NAGOYA, Japan 



a. Melanin formation in color phenotypes. Oryzias latipes (Teleostei) (in 

 collaboration with T. YAMAMOTO) 



b. Melanin formation. Rhacophonis schlegeli var. arborea (Aniira) (in 

 collaboration with T. HISHIDA) 



TOMLINSON, J. D. W. M.A., M.B., B.Chir. — Anat. Dept. London 

 Hosp. Med. Coll.. Turner St, LONDON E. 1. England (U.K.) 

 a. Descriptive and physiological embryology of the nervous system. (Mam- 

 malia) 

 h. Normal and pathological development of the vertebral venous system. 

 (Mammalia) 

 TORREY, T. W. Prof. — Dept of Zool., Indiana Univ.. BLOOMING- 

 TON, Ind., U.S.A. 

 a. Histochemical and experimental analysis of the development of the uro- 

 genital system. Miis rattus (Rodentia) 

 TRACY. H. C. Ph.D.. Prof. (Emer.) — Dept of Anat.. Med. School. Univ. 

 of Kansas, LAWRENCE. Kansas, U.S.A. 



a. Development of all systems in relationship to behaviour. Opsanus tau 

 (Pisces) (in collaboration with J. WINBLAD and Th. BATTY) 



b. Development of the nervous system in relation to behaviour. Opsanus tau 

 (Pisces) 



c. Physiological stages in development. Opsanus tau (Pisces) 

 TRAMPUSCH, H. A. L. Dr Phil. — Anat.-Embryol. Inst., Municipal Univ. 



of Amsterdam, Mauritskade 61, AMSTERDAM O. Holland 

 a. Studies concerning the effect of X-rays on embryonic development. Con- 

 tinuation of earlier experiments. (Urodela) 

 h. Studies on the factors leading to accumulation and determination of 

 blastemata in regeneration. (Urodela) 



1. The role of the skeleton (in collaboration with A. J. VERGROES- 

 SEN) 



2. The role of the skin (in collaboration with Miss P. J. VISSER) 



3. The role of the nerves (in collaboration with C. VOGELSANG) 



c. Histochemical analysis of regenerating limbs (in collaboration with Miss 

 Ch. L. J. WALEN) 



d. Experiments designed to test relations of some inhibitors of embryonic 

 development to the effect of X-rays. (Urodela and Rodent'a) (in col- 

 laboration with Miss G. J. de GREFTE) 



TREFFERS. A. J. B.Sc. — Zool. Lab. der Rijks Univ., Janskerkhof 3, 

 UTRECHT, Holland 

 a. Development of the saccus vasculosus. Trutta (Teleostei) 



TRIBE, Miss M. D.Sc. — King's Coll., Strand, LONDON W.C. 2, Eng- 

 land (U.K.) 



a. Fate of the dermatome. Gallus domesticus (Aves) 



b. Early development of the gill pouches. Rana temporaria (Anura) 



102 



