III. 1 



M2 



III. 4a. 



c Induction and determination, etc. 



1 Induction 



2 Determination 



3 Regulation and organisation 



d Development of part 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 cytochemistry 

 g Serological and immunological studies 



8 Growth and differentiation (Invertebrates and Vertebrates) 

 a Growth 



a,t) Growth and differentiation 

 b Differentiation 



9 Nutrition of embryo (Invertebrates and Vertebrates) 



CHARACTER OF INVESTIGATION 



(1) Metabolism and respiration 



(2) Cytochemistry 



(3) Physical properties 



(4) Physical treatment 



(5) Chemical treatment 



(6) Influence of hormones and vitamins 



