112 



/:'.vfr.i subdivision of Ilia and Hlb. 



a. Respiration. 



b. Metabolism and osmotic properties. 



c. Cytochemistry (enzymes, carbohydrates, proteins, lipoids, etc.). 



d. Physical treatment and physical methods. 



e. Chemical treatment. 



f. Influence of hormones and vitamins. 



g. Nutrition of embryo, 

 h. Immunological studies. 



Subdivision of group IIIc. 



1. a. Theoretical problems, 

 b. General questions. 



2. General genetical studies (heteroploidy, hybridization, chimaeras, 

 etc.). 



3. Analysis of influence of special genes and mutants in development 

 (including lethal factors). 



Subdivision of group Hid. 



1. Theoretical problems and general questions. 



2. General investigations on pathological development. 



3. Development of special malformations. 



4. Pathological development of special organs. 



5. Tumours. 



Subdivision of group IV. 



1. Theoretical problems and general questions. 



2. General investigations on regeneration, including total regeneration 



(3). 



4. Partial regeneration (tail, limbs, etc.). 



5. Regeneration of special organs (lens, etc.). 



Subdivision of group V. 



1. Theoretical problems and general questions. 



2. General investigations on metamorphosis. 



3. Investigations of whole process of metamorphosis. 



4. Metamorphosis of special organs. 



Systematical subdivision. 



EV. Evertebrata. 



A. Porifera. 



B. Coelenterata. 



C. Vermes and Onychophora, Tardigrada and Linguatulida. 



D. Arthropoda. 



E. Mollusca. 



F. Bryozoa, Entoprocta, Brachiopoda and Hemichordata. 



G. Echinodermata. 

 H. Acrania. 



V. Vertebrata. HV. Higher Vertebrates. 



LV. Lower Vertebrates. K. Reptilia. 



I. Pisces. L. Aves. 



J. Amphibia. M. Mammalia. 



