INTRODUCTION 



Since 1973 each volume of General Embryological Information Service is issued in two 

 parts: 



Part 1 contains the data on research workers in Europe. The Subject Index of this part 

 refers to the research subjects of European investigators only. 



Part 2 will contain the data on investigators in all countries outside Europe, and will be 

 organized in the same manner as part 1 . 



In the research subjects the wording used by the investigators was generally retained, 

 but some changes have been made in order to save space. Repetitions of words and parts 

 of entries giving too much detail were omitted; phrases such as; "research on . . ." or 

 "studies of . . ." were cancelled; often methods were put in brackets at the end of the 

 entry. Inevitably these condensations have caused a certain loss of information, but we 

 feel that clarity is not seriously impaired. 



For the names of higher taxa of experimental animals the following books have been 

 consulted: L. A. Borradaile and F. A. Potts, The Invertebrata (4th ed., 1963), and 

 J. Z. Young, The Life of Vertebrates (2nd ed., 1962).- Lord RothschUd, A Classification 

 of Living Animals (2nd ed., 1965) was also of much use. 



Generally the highest taxon given at the end of the entry is the class, but in Mammalia, 

 Reptilia, Amphibia, and Insecta it is the order, while in Crustacea and Arachnida both the 

 class and the order are listed. 



Due to the fact that the administrative seat of the International Society of Develop- 

 mental Biologists is no longer at the Hubrecht Laboratory, membership of the Society is 

 no longer indicated in the Directory of Names and Addresses. However, in the section on 

 International Organizations we publish a complete ISDB membership list every other year 

 (in part 1). 



A publication like this can only fulfil its role with the help of all developmental 

 biologists. We therefore solicit your co-operation, particularly by alerting your colleagues 

 to the existence of the Service, and by paying your subscription fees in time. This is 

 indispensable for us to maintain a sound financial basis. 



J. Faber 



B. Z. Salome 



