SUBJECT INDEX 



(alphabetic order) 



NOTE new headings, particularly for work on plants and unicellular organisms, on next 

 page! 



All research subjects in the Directory of Names and Addresses are represented by at 

 least one entry. The names of investigators refer back to that Directory. 



Headings are printed in capitals. New headings are listed on the next page. Headings 

 generally come under one of the following categories: 



1) Structures, e.g. organs, tissues, cells 



2) Substances or classes of substances 



3) Developmental stages, processes, and factors (including metamorphosis, regeneration, 

 developmental genetics, reproduction, developmental pathology) 



4) Techniques appearing as headings are: Chemical microanalysis. Culture & preservation, 

 Immunochemistry, Irradiation, Microcinematography, Rearing methods. Transfer 

 (Blastocyst, etc.), Transplantation, Ultraviolet Irradiation, Vital staining, X-Irradiation. 

 Other techniques will be found as subheadings (see below). 



5) General subjects: History, Theoretical biology. 



Headings are extensively cross-referenced, but not usually from lower-order to higher- 

 order categories. 



Subheadings 



Headings having less than ca. 1 names of investigators usually lack subheadings. 



The same research subject may be listed more than once under the same heading, e.g. 

 under a structure and a technique. 



Subheadings come under one of the following categories: 



1) Entities subordinate to the heading 



2) Entities related to the subject of the heading 



3) Techniques, discipUnes, and processes. These are often chosen from the Ust appearing 

 on the next page; some of these terms are also used as headings - the resulting redun- 

 dancy is unavoidable; it is considered rather an advantage because it provides several 

 entrances to the same subject. 



4) Developmental stages; see the list on the next page. 



5) Links with other entities, such as "effect on . . ., effect of . . ., interactions with . . .". 



Animal and Plant Names 



Throughout the index Classes (and in some cases Phyla) are used exclusively. Excep- 

 tions are: the use of Homo for work on the human species, and the use of Orders under 

 some general headings: Development (general). Development (larval). Development (post- 

 embryonic, fetal), Embryology (general & descriptive), Embryology (physiological), Life 

 cycles. Regeneration, Reproduction. 



Those who are looking for work on a specific taxonomic group are advised to start 

 with the headings of a general nature, such as Asexual reproduction. Development, 

 Embryology, Life cycles. Metamorphosis, Morphogenesis, Regeneration, Reproduction, 

 etc. 



Names of in vestiga tors 



In the case of work carried out jointly by two or more investigators, all collaborators 

 are Usted in alphabetical order. Since initials of first names are omitted from the entries, 

 it may sometimes be necessary to check two or more investigators of the same surname in 

 the Directory of Names. 



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