good cross-section of a rapidly moving field. What is striking is the increased application 

 of sophisticated modern techniques to this area (electron microscopy, time lapse cinema- 

 tography, physiology, biochemistry). The classical morphological approach is in the 

 minority (and strikingly enough restricted almost entirely to contributions from the 

 Soviet Union). 



The papers are arranged in seven sections as follows: Pollen genetics (5 papers). 

 Gamete maturation (8), The progamic phase (10), The fusion (6), Phylogenetic aspects of 

 fertilization (3), Incompatibility (5), and Disturbed gamete maturation and fertilization 



(6). 



The numerous good photographs, electron micrographs, and line drawings are very 

 well reproduced. 



INVERTEBRATE DEVELOPMENT (general) (see also 43) 



Treatises 



25. 



G. H. SCHMIDT, ed. 1974. SOZIALPOLYMORPHISMUS BEI INSEKTEN; Probleme der 

 Kastenbildung im Tierreich 



Wissensch. Verlagsges., Stuttgart. Biicher der Zeitschrift Naturwissenschaftliche Rund- 

 schau. XXIV, 974 pp., 281 figs., 83 tabs., glossary; taxonomic, author, and subject 

 indexes. DM 290.00 



Caste determination and differentiation in social insects is a developmental process 

 taking place at the supra-organismal level. It is based on the differential activation of 

 specific developmental programmes in whole organisms. We briefly announce this book 

 here because we feel it deals with problems that are of intrinsic importance for develop- 

 mental biology in a broad sense. 



The book is a comprehensive treatise written by a team of 26 specialists from 

 10 countries. Among them are ethologists and ecologists, geneticists, taxonomists and 

 morphologists, physiologists and biochemists. All of them are still active in research and 

 many of the 29 chapters contain unpublished material. More than a dozen different insect 

 groups and many separate genera and species pass in review. 



The contributions of authors from outside the German language area were translated 

 into German. The book is well produced and illustrated. 



Textbooks 



26. 



P. FIORONI and G. MEISTER. 1974. EMBRYOLOGIE VON LOLIGO VULGARIS 



LAM., Gemeiner Kalmar 



Fischer, Stuttgart. Grosses Zool. Praktikum H.16c/2. VIII,69 pp., 29 figs., 4 tabs. DM 



ca. 24. - (paper) 



This is a laboratory guide book for students and is therefore entirely descriptive in 

 character. Nevertheless, it could be very useful for those starting experimental work on 

 this species. It is a digest of the essential literature, covering all phases of development 

 and all organ systems. Moreover, it contains a "histological" Normal Table based on 

 Naefs stages and a comparative table of Naef s and Arnold's stages. 



The "Practical Part" contains useful directions for obtaining and rearing egg batches 

 and for the sectioning and mounting of embryos. 



The book is illustrated with very good line drawings. 



201 



