SUBJECT INDEX 



(systematical order) 



The subject index should be used in conjunction with the alphabetical list of 

 names and subjects. The names of the investigators are arranged systematically 

 under a number of headings explained below (see pag. 232 ff). 



Each entry is composed of a name, a lower cast letter referring to the subject 

 in the alphabetical list, a capital letter (or letters) indicating the taxonomic 

 position of the material used, and (in a number of cases) one or more numerals 

 in brackets, further specifying the character of the investigation. In the case 

 of investigations carried out in collaboration by two or more investigators, all 

 names are listed separately. 



The system used enables the reader to find related subjects under the same 

 heading, grouped according to the taxonomic position of the material used. 



All investigations on chemical embryology, including cyto- and histo- 

 chemistry, axe listed under one of the main rubrics III — VII, not under I or II. 

 The latter are reserved for purely morphological work. 

 Key to taxonomic groups: 

 EV Evertebrata 

 P Protozoa, Mesozoa 

 A Porifera 

 B Coelenterata 



C Plathelminthes, Aschelminthes, Annelida, 

 Onychophora, Tardigrada, Linguatulida 

 D Arthropoda 

 Di Insecta 

 E Mollusca 



F Tentaculata, Brachiopoda, Chaetognatha, Hemichordata 

 G Echinodermata 



Chordata 

 H Urochordata, Cephalochordata 

 V Vertebrata 

 I Pisces 

 J Amphibia 

 K Reptilia 

 L Aves 

 M Mammalia 

 Key to character of investigations: 



(1) Metabolism and respiration 



(2) Cyto- and histochemistry 



(3) Biophysics 



(4) Physical treatment 



(5) Chemical treatment 



(6) Influence of hormones, vitamines, growth substances, etc. 



(7) Biochemistry 



(8) Immunobiology 



(9) Electron microscopy 



(10) Radio-isotope studies 



(11) Cell, tissue and organ-culture 



229 



