Vandebroek 106 Vo 



Induction and competence phenomena during the development of 



Ascidia aspersa. Ilia. lc. H. 



Action of LiCl and NaSCN on the development of Ascidia aspersa 



and Styela partita (Ascidians) . Ilia. 2a. e. H. 



Development of the neural system of Balanoglossus kowalewskii 



(Enteropneusta) . I. 9. F. 

 (in collaboration with J. JANSSENS) 



Morphogenetic movements during gastrulation of Coelenterata, 



Enteropneusta and lower Chordates. II. 2a. EV. -f- LV. 



The general comparative, descriptive and experimental embryology 



of the Metazoa and their classification. The place of the Cyclo- 

 neuria (Echinoderma, Enteropneusta, Pterobranchia and Chaeto- 

 gnatha) in the animal Kingdom. II. 2a. EV. -j- V. 



Nucleids acids during the organogenesis of Eisenia foetida (An- 

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Comparative organogenesis in Protostomes and Chordates. 



II. 2a. EV. + V. 



The development of the trabeculae cranii in perch embryos from 



which the prosencephalon has been removed. Perca (Osteichthyes) . 



Ilia. 11. I. 



The development of the trabeculae cranii in perch embryos treated 



with LiCl. Perca (Osteichthyes). Ilia. 11. 1, 



(in collaboration with M. T. CLAES) 



Modifications of the competence in Triturus taeniatus (Urodeles) 



after local action of LiCl. Ilia. 7. J. 



(in collaboration with E. BONfi) 



Morphogenetic movements in the primitive streak of rat embryos. 



Ilia. 6. M. 

 VANDEL, A. (data not yet received). 



VANNINI, E. Embryogenesis and differentiation of the gonads in 

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Regeneration in Polychaeta. IV. 2. C. 



VASSEUR, E. J. E. Studies on the chemical composition and the 



species specificity of its chemical composition. Action of dissolved 

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VERMAAK, D. Ontogenesis of commissural connexions of the vena 

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I. 15. M. 



VILLAFRANCA, G. de Studies of various protein fractions in deve- 

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VINTEMBERGER, P. Recherches sur le determinisme de la symetrie 

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VITAGLIANO, G. Ribonucleic acid suply to germ cells and deter- 

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VOGT. Frl. M. Development of semilethals in Drosophila melanog aster . 



IIIc. 3. D. 



