Then follow chapters on the relation of chorionic gonadotropin and somatomammotropin 

 to maternal and fetal nutrition, by Kaplan and Grumbach, Emerson et al, and Crosignani. 



In Part Three (The mammary gland and the control of lactation) three chapters seem 

 to be of interest to our readers: Morphologic changes of the mammary gland during 

 development, pregnancy and lactation (by Salazar and Tobon); Hormonal control of 

 cellular events during lactogenesis (by Rivera, who treats lactation as a developmental 

 process); and Placental peptide hormones affecting fetal nutrition and lactation (by 

 Matthies', who also describes the putative role of these hormones in the maintenance of 

 gestation). Part One is entitled CJiemical and biologic characterization of pituitary and 

 placental lactogenic hormones, and consists of eight chapters. 



The book is well produced and contains excellent light and electron micrographs. 



Textbooks 



111. 



V. WIGGLESWORTH. 1974. INSECT HORMONES 



Oxford Univ. Press, London. Oxford Biology Readers No. 70. 16 pp., 21 figs. 30p. 



(paper) 



As may be expected from this author, this is an excellent, though of course very 

 condensed summary of the subject. The illustrations were chosen with care. 



Monographs 



112. 



B. L. ASTAUROV, edit. 1974. HORMONAL FACTORS OF INDIVIDUAL DEVELOP- 

 MENT (in Russian) 

 Publ. House Nauka, Moscow. 346 pp., 123 figs., 28 tabs. 



Collection of 28 brief reviews and research reports (including 4 by French, 2 by 

 Hungarian, one by a Yugoslavian author); various aspects of the formation and function 

 of endocrine organs in embryos and fetuses of various vertebrates including man; brief 

 English summaries; profusely illustrated - light and electron micrographs of reasonable 

 quality. 



113. 



B. M. FREEMAN and M. A. VINCE. 1974. DEVELOPMENT OF THE AVIAN 



EMBRYO, a behavioural and physiological study 



Chapman and Hall, London. XVIII,362 pp., 109 figs., 9 pis., 19 tabs., subject index. 



£10.10. 



Contents: I. Behaviour: 1. Incubation requirements, 2. General development, postural 

 changes, activity and relationship between the embryo and other structures within the 

 shell, 3. Vocalization and communication in the natural situation, 4. Effects of 

 external stimulation on embryonic activity, rate of development and time of hatching, 

 5. The nervous system, 6. The development of sensory systems, 7. Conditioning of the 

 chick embryo and conclusions to chapters 1-7, 8. The newly hatched bird, II. 

 Physiology: 9. Gaseous exchange and oxygenation of the embryo, 10. Nutrition and 

 utilization of albumen and yolk, 11. Acid-base balance, 12. Excretion and water 

 balance, 13. Hormones in development, 14. Mobilization and utilization of calcium 

 stores, 15. Physiology of hatching, 16. The neonate 



This book is an invaluable source of information for those working on the later stages 

 of bird embryos in ovo. It describes the major events of embryonic development which 

 result in a viable hatchling, and the underlying mechanisms. Part one covers 120, and part 

 two 150 pages. The earliest stages considered are early somite stages, and the treatment 

 extends into the early neonatal period. The list of avian species referred to in one or more 

 places in the text comprises more than 80 names. 



There are two extremely useful appendixes. The first is an 8-page tabular chronological 

 survey of development in the domestic fowl, harmonized with Hamilton/Hamburger 



232 



