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III. DEVELOPMENTAL PHYSIOLOGY 

 SUBDIVISION 



/ Theoretical problems 



2 Methods and technics 



3 General subjects (asexual development, etc.) 



4 Initial development 



a Primordial germ cells 



b Gameto-. ovo- and spermatogenesis 



c Maturation 



d Ovulation and oviposition 



e Activation and fertilization 



f Parthenogenesis 



g General subjects 



5 Cleavage and mitosis 

 a Cleavage 



b Mitosis 



6 Further development of Invertebrates 



a General subjects, (complete development) 



b Primitive development (including early development) 



c Induction and determination 



d Development of part of the organism (head) 



e Development of special organ systems 



(Cf. general subdivision p. 121 — 123) 

 f Histo- and cytochemistry 

 g Serological studies 



7 Further development o[ Vertebrates 

 a General investigations 



1 General subjects 



2 Complete development 



3 Later development 



4 Implantation and placentation 

 b Primitive development 



1 Early development 



2 Gastrulation 



2/3 Gastrulation and neurulation 



3 Neurulation 



4 Development of neural crest 



c Induction and determination, etc. 



1 Induction 



2 Determination 



3 Regulation and organisation 



d Development of parts of the organism 



1 Head 



2 Limb 



e Development of special organ systems 



(Cf. general subdivision p. 121 — 123) 

 f Histo- and cytochemistry 

 g Serological and immunological studies 



8 Growth and differentiation (Invertebrates and Vertebrates) 

 a Growth 



