a Regeneration and cell division in the stomach. Rattus norvegicus, Mus musculus (Roden- 

 fia) 



TIMMERMANS, Miss L. P. M. M.Sc. — Zool. Lab., State Univ. of Utrecht, Janskerkhof 3, 

 UTRECHT, Netherlands 



a Cytochemistry and physiology of shell secretion. Limnaea stagnalis, Pomacea bridgesi 

 diffusa (Gastropoda) 



b Germinal localization in eggs. Dentalium spec. (Scaphopoda) 



TITOVA, Mrs. I. I. Cand.biol.sci. — Inst, of Exper. Biol., Acad, of Med. Sci. of the 

 U.S.S.R., Baltiyskaya St. 8, MOSCOW A-315, U.S.S.R. 



TOERIEN, M. J. Ph.D. — Dept. of Anat., Univ. of Stellenbosch, STELLENBOSCH, S. 

 Africa 



a Cranial development. Podiceps cristatus (Podicipitidae, Aves) 



h Morphological and experimental studies on cranial morphogenesis (by means of extir- 

 pation procedures, heteroplastic and orthotopic transplants, the contributions and inter- 

 relationship of the visceral, axial and capsular skeleton are studied). Ambystoma spec, 

 Triturus spec. (Urodela), Xenopus spec. (Anura). Chelydra serpentina (Chelonia), Anas 

 boschas, Spheniscus demerstts, Gallus domesticus (Aves), Oryctolagus cunicultis (Lago- 

 morpha) 



TOIT, C A. du Ph.D., Prof. — Zool. Inst., Fac. of Sci., Univ. of Stellenbosch, STELLEN- 

 BOSCH, S.Africa • 



TOIVONEN, S. I. Ph.D., M.D., Prof. — Lab. of Exper. Embryol., Dept. of Zool., Univ. 

 of Helsinki, Arkadiankatu 7, HELSINKI 10, Finland • 



a The specific action of heterogeneous inductors. Triturus spec. (Urodela) 



h The mechanism of primary induction. Triturus spec. (Urodela) (in collaboration with 

 L. O. SAXfiN, Dept. of Pathol.) 



c Nucleic acid synthesis in induced ectoderm. Triturus spec. (Urodela) (in collaboration 

 with P. J. KOHONEN) 



d Cell interaction. Triturus spec. (Urodela) 



TOKIN B. P. Dr.Biol.Sci., Prof. — Dept. of Embryol., Leningrad Univ., Mendeleevsky 

 St. 5, LENINGRAD B-164, U.S.S.R. 



a Regeneration, asexual reproduction and somatic embryogenesis. Beroe cucumis, Bolinopsis 

 infundibulum (Ctenophora), Pelmatohydra oligactis, Laomedea flexuosa and other spp. 

 (Coelenterata) 



b Ontogenesis. (Protozoa) 



c Regeneration during ontogenesis. (Protozoa) 



TOKUNAGA, Miss C. Ph.D. — Dept. of Zool., Univ. of California, BERKELEY, Calif. 

 94720, U.S.A. 



a Developmental genetics of pattern formation. Drosophila melanogaster (Diptera) 



b Pleiotropic effect of genes. Drosophila melanogaster (Diptera) 



TOMITA, H. M.A. — Biol. Inst., Fac. of Sci., Nagoya Univ., Chikusa-ku, NAGOYA, Japan 



TOMODA, Y. D.Sc. — Div. of Zool., Natl. Sci. Museum, Ueno Park, Daito-ku, TOKYO, 

 Japan 



TONDURY, G. Dr., Prof. — Anat. Inst, der Univ., Gloriastr., 19, 8006 ZURICH. Swit- 

 zerland • 



TONEBY, M. I. FiLkand. — The Wenner-Gren Inst., Norrtullsgatan 16, S-113 45 STOCK- 

 HOLM, Sweden 



a Metabolism of tryptophane. (Echinodermata) 



TONGE. C. H. D.D.Sc, Prof. — Dept. of Oral Anat., The Dental School, Univ. of New- 

 castle upon Tyne, Northumberland Rd., NEWCASTLE upon Tyne NEl 8TA, England 



a Tooth development and eruption 



b Effect of severe undernutrition on the development and growth of teeth and jaws (in- 

 cluding rehabilitation). Sus scrofa (Artiodactyla) 



c Protein calory deficiency and rehabilitation relative to the development and growth of 

 teeth and jaws. Sus scrofa (Artiodactyla) 



TONNEYCK (MULLER), Mrs. I. — Anat.-Embryol. Inst., Univ. of Amsterdam, Maurits- 

 kade 61, AMSTERDAM-O., Netherlands 



a Experimental studies on the morphogenesis of the skull. Gallus domesticus (Aves) 



TORO, I. M.D., Prof. — Inst, of Histol. and Embryol., Med. Univ., Tiizolto u. 58, BUDA- 

 PEST IX, Hungary 



a Experimental and physiological embryology; teratogenesis. Pleurodeles waltlii, Ambystoma 

 mexicanum (Urodela), Gallus domesticus, (Aves). Rattus rattus (Rodentia) 



TORO I.. Jr. M.D. — Inst, of Histol. and Embryol., Med. Univ., Tiizolto u. 58, BUDA- 

 PEST IX, Hungary 



a Developmental pathology and teratogenesis (electron microscopy). Rattus rattus (Roden- 

 tia) 



TOROK, L. J. Ph.D. — Inst, of Histol. and Embryol., Med. Univ., Tuzolto u. 58, BUDA- 

 PEST IX, Hungary 



a Regeneration and somatic embryogenesis with special reference to the morphogenetic role 

 of the nervous system. Dugesia (:= Euplanaria) lugubris (Turbellaria) 



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