25 



members and former members of the Department of Zoology, Cambridge Uni- 

 versity. The scope of many essays is wider and sometimes more speculative 

 than is usual in more formal publications. The general approach is morphol- 

 ogical (in the widest sense), rather than biochemical or biophysical, and the 

 special interest of several contributions lies in the emphasis on biological 

 organisation as a category in its own right, next to biochemistry and bio- 

 physics. 



The contributions that are of special interest fo our readers are those by 

 Swann (Fertihzation and the control of cell division; 11 pages), Picken (Mole- 

 cular biology and the future of zoology; 13 pages), Smith (The efficiency of 

 embryonic development, or the price of the epigenetic process; 14 pages), 

 Waddington (Cell architecture and information in cellular differentiation; 10 

 pages), and Wigglesworth (The epidermal cell; 17 pages). 



The book is well-illustrated and contains an alphabetical index. 



33. "SYMPOSIUM ON THE GERM CELLS AND EARLIEST 

 STAGES OF DEVELOPMENT" 

 1961 



Editor: S. Ranzi Fondazione A. Baselli 



733 pp., 286 figs., 48 tbs. Istituto Lombard© 



Milano 



Price: 9500 Lire 



This volume contains the papers presented at the symposium of the Inter- 

 national Institute of Embryology in September 1958 at Pallanza (Italy). 



Thirteen papers are devoted to "the formation, ultrastructure and physiology 

 of oocytes, as seen in the light of their morphogenetic significance", viz. 

 "relation with maternal organism" (by Mintz, Philadelphia, Pa. and Blackler, 

 Oxford), "progressive changes in structural and biochemical composition" (by 

 Flickinger, Nogent-sur-Marne; Glass, San Francisco, Cal.; Gerzeli, Pavia; 

 Vialli, Pavia; Lanzavecchia, Milano and Wartenberg, Hamburg), "polarity 

 and bilateral symmetry" (by Devillers, Sceaux), and "nucleo-cytoplasmic 

 relations" (by Vincent, Syracuse, N.Y.; Ficq, Bruxelles; Dettlaff, Moscow 

 and von Bertalanffy, Topeka, Kan.). 



There are 7 papers dealing with fertilization (by Mann, Cambridge; Tyler, 

 Pasadena, Cal; Metz, Tallahassee, Fla.; Edwards, London; Monroy, Paler- 

 mo; Balinsky, Johannesburg; Colwin A. L. and Colwin L. H., New York), and 

 41 papers dealing with "progressive maturation of the organization pattern in 

 fertilized and cleaving eggs". This latter subject has been treated in different 

 systematic groups: Spiralia (by Lehmann, Bern; and Weber, Bern), Ascidia 

 (by Minganti, Palermo; Vandebroek, Louvain; Mancuso, Palermo; and De 

 Vincentiis, Palermo), Enteropneusta (by Vandebroek, Louvain), Arthropoda 

 (by Krause, Wiirzburg; Sander, Wiirzburg; and Colombo, Benassi and Alle- 

 gri, Padova), Echinodermata (by Lallier, Villefranche-sur-Mer; Horstadius, 

 Uppsala; Whiteley and Chambers, Seattle, Wash.; Scarano, Napoli; and 

 Wolsky, New York), and Mammalia (by Brambell, Bangor; Mulnard, Bruxel- 

 les; Tarkowski, Warsaw; Glenister, London; and Skreb, Zagreb), as well as 

 according to special subjects: "development of symmetry in vertebrates" (by 

 Clavert, Strasbourg; and Curtis, London), "role of the nucleus" (by Briggs, 

 Bloomington, Ind.; King and Di Berardino, Philadelphia, Pa.; Fischberg, Ox- 



