IV. 1. 165 IV. 2/3. 



IV. Regeneration. 



1. Theoretical problems and general questions. 



EV. + V. Regeneration problems. Invertebrates and Verte- 

 brates. R. W. REYER 

 B. Experiments on the gradient-concept. Hydroidea. 



H. A. L. TRAMPUSCH 



2. General investigations on regeneration (including total re- 

 generation. IV. 3). 



EV. Regeneration. Invertebrates. C. OVERGAARD 



Differentiation of cilia in Ciliata (Protozoa). Regene- 

 ration. P. B. WEISZ 



B. Compensatory regulation in the Serpulid Hydroides. 



M. ABELOOS 



B. An investigation of the organising action of the oral 

 cone in the regeneration of the hydroid Cordylophora 

 lacustris. J. SINGER 



C. Regeneration in marine Planarians. M. ABELOOS 

 C. Regeneration. Triclads (?). H. V. BR0NDSTED 

 C. Migration des cellules de regeneration chez les Planaires 



dulcicoles. Euplanaria lugubris (Plathelminth.es). 



Mile. F. DUBOIS 

 C. Regeneration in marine Annelids. M. ABELOOS 



C. Regeneration in Polychaeta. E. VANNINI 



C. Regenerationsversuche an verschieden alten Tubifex 



rivulorum (Annelida). H. SCHMIRLER 



C. Regeneration auf verschiedenen Altersstadien von Tu- 

 bifex rivulorum (Clitellata). A. PENNERS 



D. Regeneration in Sphaeroma (Crustacea). 



M. ABELOOS 



D. Wundheilung und Regeneration bei Ephestia (Ptycho- 



poda), (Lepidoptera). A. KOHN 



J. Origine des cellules de regeneration chez les Batraciens. 



Potentialites de ces cellules. Triton. Mile M. SCHUE 



J. A study of the mechanics of the formation of the regene- IV. 4. 



ration blastema. The influence of nerves on blastema 



formation. Regression in nerveless non-regenerating 



limbs. Amblystoma punctatum and Ambl. opacum. 



E. G. BUTLER 

 J. Etude des potentialites des territoires de regeneration Ilia. 2b. 

 par la deviation des nerfs et par les transplantations; 

 mecanisme de la duplicature. Triton cristatus. 



E. GUYENOT 

 J. Biochemistry of regeneration in Urodeles with special 

 consideration of the activity of some enzymes during the 

 determination of the blastema. Triturus cristatus. 



F. S. GHIRETTI 



