material, and most are followed by group discussions (without references or 

 illustrations). Most of the material relates to man, various mammals, and 

 the chick. 



The table of contents above speaks for itself. The book is printed on art 

 paper and adequately illustrated. The subject index is rather short and an 

 index to contributors is lacking. 



DEVELOPMENTAL GENETICS, EVOLUTION (see also 5,6,23) 



Monographs 



39. 



N.S.LEBEDKINA. 1979, THE EVOLUTION OF THE AMPHIBIAN SKULL; problems of 



morphological integration (in Russian) 



Publ. House Nauka, Moscow. 284 pp., 100 figs., 11 tabs. 



Study based on original work; skull development in urodeles; homology of 

 skull bones in urodeles; structural development of bony skull types in am- 

 phibians; monophyletic origin of comtemporary amphibia; phylogenesis of 

 correlating systems; numerous line drawings, both original and from other 

 sources; 20-page bibliography (4 pp. Russian) 



40. 



J.G.SCANDALIOS, ed. 1979. PHYSIOLOGICAL GENETICS 



Academic Press, New York, etc. Physiological Ecology Series. XII, 280 pp., 



62 figs., 21 tabs., subject index. $ 24.00 



Contributors: Carlson, Ho, Johnson, Levings, Paigen, Parke, Pring, 



Scandalios, Scott 



The chapters in this book were not intended as comprehensive reviews but 

 represent personal accounts of developments best known to each writer. The 

 chapters average some 40 pages in length and are well organised. All authors 

 are Americans. 



The chapter that appears of most general interest to our readers is the 

 first, by Paigen, entitled Genetic factors in developmental regulation. It 

 devotes much attention to the intriguing class of genes called temporal, 

 and assumed to be involved in the developmental programming of the activ- 

 ity of other genes. In a separate section on horaeotic mutants it suggests 

 a speculative model for imaginal disc differentiation based on hypothetical 

 intradisc differentiation hormones and receptors. 



Other chapters worth mentioning here are that by Scandalios on the con- 

 trol of gene expression and enzyme differentiation, that by Ho on the hor- 

 monal control of gene expression, and that by Scott on biochemical-genetic 

 control of morphogenesis in fungi and cellular slime moulds. 



Symposivan reports 



41. 



L.B.RUSSELL, ed. 1978. GENETIC MOSAICS AND CHIMERAS IN MAMMALS 



Plenum, New York, etc. Basic Life Sciences vol.12. XIV, 485 pp., 149 figs., 



69 tabs., subject index. $ 39.50; countries outside USA ca. $ 47.50 



This book is the outcome of an international symposium held in Gatlinburg, 

 Tenn., in April 1978. The format of the 31 papers varies widely and there 

 has been minimal editing; many papers lack summaries. Most papers report on 

 results that were new in 1978. 



Mammalian embryologists and general developmental biologists will find 

 much of interest in the book. Most of this is to be found in the first two 

 sections, which deal respectively with Developmental potency, gene expres- 

 sion, control of phenotype and tumour origin (9 papers), and with Gamete 



182 



