Toi 89 Tribe 



TOIVONEN, S. Dr phil. — Zool. Lab., Univ. of Helsinki. Dept of Physiol.. 

 P. Rautatiekatu 13. HELSINKI, Finland, 

 a. The specific action of heterogenous inductors. Triton (Urodela) 

 h. Analysis of the regulative potencies of the invaginating archenteronroof 

 and of the induced neural plate along the dorsoventral and cranio-caudal 

 axes by heteroplastic transplantation of parts of the dorsal blastoporal 

 lip. Triturus alpestris, taeniatus and cristatus (Urodela) (in collaboration 

 with P. D. NIEUWKOOP) 



c. Thyroid gland in delayed metamorphosis. Xenopus laevis (Anura) 



d. The development of mouth- and pharyngeal cavity during metamorphosis. 

 Xenopus laevis (Anura) (Normal Table) 



TONDURY, G. Prof. — Anat. Inst, der Univ., Gloriastr. 19, ZURICH. 

 Schweiz. 



a. Systematische Untersuchungen typischer menschlicher Missbildungen 

 unter Bezugnahme auf die Ergebnisse entwicklungsphysiologischer For- 

 schung. Gegenwartig werden Kopfmissbildungen und sireniforme Miss- 

 bildungen analysiert. Homo (Primates) 



b. Untersuchungen iiber die Entwicklung des Gesichts und ihre Beziehun- 

 gen zur Entstehung der Hasenscharte und anderer Spaltbildungen. Homo 



c. Untersuchungen zur Frage der Gonadenentwicklung und der Potenzen 

 des Ovarepithels beim Erwachsenen. Homo (Primates) 



d. Embryologische Untersuchungen zur Frage der Embryopathia 

 rubeolosa. (Mammalia) 



e. Untersuchungen zum Wirkungsmechanismus der Sexualhormone auf 

 Wachstum und Differenzierung. (Amphibia) 



f. Experimentelle Untersuchungen zum Induktionsproblem. (Amphibia) 



g. Experimentelle Untersuchungen zur Wirkung der Chorda dorsahs. 

 Gallus (Aves) 



TOSI, Miss L. Dott. Sci. Biol. — 1st. di Zool. e Anat. comp.. Via Celoria 



10. MILANO. Italia, 

 a. Proteins in embryonic development. ( Echinodermata and Amphibia) 

 TOWNES Ph. L. Grad.stud. — Dept of Biol.. Coll. of Arts and Sci., Univ. 



of Rochester, ROCHESTER 3, N.Y., U.S.A. 

 a. Selective cellular adhesion in embryonic germ layers. (Urodela and 



Anura) 

 TRACY H. C. Ph.D., Prof. — Dept of Anat., Med. School, Univ. of 



Kansas. LAWRENCE, Kan., U.S.A. 



(no data received over this year) 

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



Amsterdam, Mauritskade 61, AMSTERDAM O., Holland. 



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

 embryological development and regeneration. (Coelenterata, Vermes. 

 Echinodermata etc. J 



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

 regeneration-blastema. (Urodela and Anura) 



c. Experiments analyzing lens regeneration and the difference between 

 regenerating and non-regenerating species. (A^nura) 



d. Experiments aimed to circumstances under which regeneration will be 

 stimulated or inhibited. (Urodela and Anura) 



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

 land (U.K.) (no data received over this year) 



