Tracy 88 Tsa 



a. The development of all systems of the toadfish in relationship to behavior. 

 Opsanus tau (Pisces) (in collaboration with J. WINBLAD and Th. 

 BATTY) 



b. Development of the nervous system of the toadfish in relation to its 

 behavior. Opsanus tau (Pisces) 



c. Physiological stages in the development of the toadfish. Opsanus tau 

 TRAMPUSCH, H. A. L. Dr Phil. — Anat.-Embryol. Lab., Univ. van 



Amsterdam, Mauritskade 61, AMSTERDAM O., Holland. 



a. Experiments on the head-organizer by means of X-rays and a new 

 micro-surgical device. (Amphibians) 



b. Experiments on secondary inductors, mainly on sense-organs. (Am- 

 phibians) 



c. Experiments testing similarity in the processes which take place during 

 embryological development and regeneration. (Coelenterata, Vermes, 

 Echinodermata, etc.) Anuta) 



d. Experiments on the effect of X-rays on regeneration. (Urodela and 



e. Experiments searching for the origin and the way of developing of 

 regeneration-blastema. (Urodela and Anura) 



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

 land. 



a. Development of the trabeculae and parachordals in the Lamprey. 

 (Cyclostomes) (in collaboration with A. FISK) 



b. A critical note on the development of the Vertebrate kidney, (in col- 

 laboration with A. FISK) 



TRINKAUS, J. P. M.A., Ph.D. — Osborn Zool. Lab., Yale Univ., NEW 

 HAVEN 11, Conn., U.S.A. 



a. Mechanism of gastrulation in teleost eggs. The nature of the surface 

 gel layer of the egg and its possible role in the cell, movements 

 (particularly epiboly) characteristic of teleost gastrulation. Extensive 

 utilization of the methods of marking, wounding, transplantation. Fun- 

 dulus heteroclitus (Osteichthyes) 



b. Role of hormones in differentiation of pigment patterns. Investigation 

 of estrogen and thyroid hormone as morphogenetic agents in pigment 

 pattern differentiation. The particular emphasis has been on the response 

 of melanoblasts to these hormones and the role of epidermis in con- 

 ditioning this response. Gallus domesticus (Aves) 



c. Investigation of the nutritional role of yolk and its constituents in early 

 morphogenesis, by the method of explantation in vitro of yolk- 

 free blastoderms at blastula and gastrula stages. Fundulus heteroclitus 

 (Osteichthyes) 



TRUSLOVE, Miss G. M. B.Sc. — Dept of Genetics, Univ. Coll. London, 

 Gower St, LONDON W.C. 1, England, 

 a. Developmental genetics of skeletal mutants. Mus musculus (Mammalia) 

 TSAI, Miss N. B.Sc. — Dept of Biol., Nat. Univ. of Chekiang, HANG- 

 CHOW, China, 

 a. Studies on eye-stalk hormone in Crustacea: 



1. Isolation and purification of the hormone preparation. 



2. Chemical identification of the active principle. 



3. Mechanism of the hormonal action. 



Caridina denticulata (Decapoda) (in collaboration with H. M. KIANG, 

 J. CHU and P. S. CHOW) 



