specialized nature of the Symposium, the various contributions will not be 

 enumerated. They all report on recent original research. A few pages of com- 

 ments by H. Eagle at the end serve as a summery. 



The book is adequately illustrated and has a list of participants, an index to 

 participants, and a brief subject index. 



36 CELL DIFFERENTIATION 



1967 

 Editors: A. V. S. De Reuck and J. Knight J. 6 A. Churchill Ltd. 



A Ciba Foundation Symposium London 



257 pp., 43 figs., 15 tbs. Price: 60 s. 



Participants: Abercrombie (London). Ambrose (London), Bell (Cambridge, Mass.), Birnstiel 

 (Edingburgh). Brachet (Brussels), Curtis (London), Engelhardt (Moscow), Feldman (Reho- 

 voth), Georgiev (Moscow), Grobstein (La Jolla, Calif.), Gurdon (Oxford), Haddow (London), 

 Kirby (Chalfont St. Giles), Lash (Philadelphia, Pa.), Monroy (Palermo), Paul (Glasgow)! 

 Rosenberg (St. Paul, Minn.), Sherbet (Chalfont St. Giles), Vendrely (Villejuif), Waddington 

 (Edingburgh), Weiss (New York, N.Y.), Whisson (London), Et. Wolff (Nogent-sur-Mame), 

 Em. Wolff (Nogent-sur-Mame), Yamada (Oak Ridge, Tenn.) 



This book embodies the proceedings of a three-day Symposium held in London 

 in January/February 1967. It was attended by a small, selected international 

 group of scientists, whose names are listed above. As in other Ciba Symposium 

 reports, all the discussions held at the meeting, one following each paper, and 

 three general discussions in addition, are recorded. Together, they make up 

 about 40 % of the material in the book, and contain much additional information 

 with appropriate literature references. 



It is imposible to review the 14 papers extensively. Abercrombie opened the 

 Symposium with a thoughtful theoretical consideration of the nature of diffe- 

 rentiation, in which he proposed to use the word "epigenotype" for that which 

 is passed on from one cell generation to the next, regardless of changes in cell 

 phenotype. The other papers either review recent developments, or report on 

 recent, often unpublished results in a variety of fields and systems. To mention 

 but a few: cell membrane development; cell contacts and information transfer; 

 nuclear transplantation; chemical nature of inducers; regulation of gene expres- 

 sion; control of synthetic activity; ribosomal RNA genes; behaviour of tumours 

 and their interaction with normal or embryonic tissues, both in vitro and i n 

 vivo. The general conclusion is that this book is a "must" for all those wishing 

 to acquire a first-hand knowledge of the picture of the various steps of cellular 

 differentiation as it begins to emerge from studies using the most modern 

 techniques. 



The book is adequately illustrated and has a subject index as well as an index 

 to contributors. 



37 PLAZENTA UND EIHAUTE 



1966 

 Editors: H. Essbach and I. Rose VEB Gustav Fischer Verlag 



Symposium Med. Akad. Magdeburg Jena 



173 pp., 29 figs., 4 tbs. Price: MDN 24.30 



(paper-bound) 



Contributors: Bertolini (Leipzig), Brandstadter (Magdeburg), Essbach (Magdeburg), Flamm 

 (Wien), Hofmann (Magdeburg), Kemnitz (Magdeburg), Matthies (Magdeburg), Pliess (Ham- 

 burg), Snoeck (Bruxelles), Wolff (Magdeburg) 



33 



