11. 1. 134 n ^> 



c Determination of primitive development 

 d Development of part of the organism 

 e Development of special organ systems 

 (Cf. general subdivision p. 124 — 126) 

 f Histo- and cytogenesis 



7 Further development of Vertebrates 

 a General investigations 



1 General subjects 



2 Complete development 



3 Partial development 



4 Implantation and placentation 

 b Topogenesis 



1 Early development 



2 Gastrulation and formation of germ layers 



3 Neurulation 



4 Formation of neural crest 



5 First larval development 



c Induction, determination, etc. 



1 Induction 



2 Determination 



3 Regulation and organisation 



d Development of parts of the organism 



1 Head 



2 Limbs and wings 



3 Tail 



e Development of special organ systems 



(Cf. general subdivision p. 124 — 126) 

 f Histo- and cytogenesis 



8 Growth and di[[erentiation (Invertebrates and Vertebrates) 

 a Growth 



a/b Growth and differentiation 

 b Differentiation 



CHARACTER OF INVESTIGATION 



(4) Physical treatment 



(5) Chemical treatment 



(6) Influence of hormones and vitamin.s 



1 Theoretical problems 

 Perri, T. — d 

 Yamada, T. — a V 



2 Methods and technics 

 Beatty. R. A. — b 

 Cotronei. G. — a 

 Harvey. Mrs E. Browne — d 

 Lucey. E. C. A. and 



Waddington. C. H. — b 

 Williams. R. G. — a 



3 General subjects 

 (asexual development, etc.) 



