ii. 8b n. sb 



Hilfcr. S. R. — b L Brice, M. C. — a M 



McCallion, D. J. — b (5)L Markert, C. L. — b M 



Trinkaus, J. P. — a L Nicholas, J. S. — j M 



Wessells, N. K. — a L Schlesinger, A. B. — c M 



Weston J A. — a L Stroeva, Miss O. G. — b M 



Wilde, C. E., Jr. — f L Wilde, C. E., Jr — f M 



Zwilling, E. — a L Wrba. H. — b M 



III. PHYSIOLOGY OF DEVELOPMENT 



SUBDIVISION 



/ Theoretical problems and general questions 



2 Methods and techniques 



3 General subjects (asexual development, reproduction, etc.) 

 ■i Initial development 



a General subjects 



b Primordial germ cells 



c Gameto-, ovo- and spermatogenesis 



d Maturation 



e Ovulation and oviposition 



f Activation and fertilization 



g Parthenogenesis 



5 Cleavage and mitosis 



a Cleavage 

 b Mitosis 



6 Further development o/ Invertebrates 



a General subjects (including complete development) 

 b ,,Primitiventwicklung" 

 c Induction and determination 

 d Development of part of the organism 

 e Development of special organ systems 

 (Cf. general subdivision p. 173 — 175) 

 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 



5 Development of behaviour 

 b ,,Primitiventwicklung" 



1 Early development 



2 Gastrulation 



2/3 Gastrulation and neurulation 



3 Neurulation 



4 Development of neural crest 

 c Induction, determination, etc. 



1 Induction 



2 Determination 



3 Regulation and organization 



195 



