lives and reproduces without difficulty in the laboratory. 



The author distinguishes 53 stages, of which cleavage comprises 7, the 

 blastula 8, the gastrula 4, and the neurula 5. The later stages up till the 

 juvenile fish with fully grown appendages number 29 in total. It is not stated 

 in how far the stages parallel those established for other fish species. 



The work is in the form not of a book, but of 16 plates mounted on card- 

 board and provided with perforations for filing. 



The plates consist of very carefully executed half-tone drawings. Many 

 stages are shown in lateral as well as dorsal aspect. 



To the plates is added an 8-page booklet in the same format, containing a 

 concise text introducing the animal, its care and reproductive habits, and a 

 brief description of the salient external features of development. The stages 

 are not individually described, and no measurements or ages are given for 

 individual stages. A rough time-table at 20 — 21° C is provided. The taxon- 

 omic position and nomenclature of the species are not discussed. The booklet 

 is concluded by a short bibliography. 



8. MODERN TRENDS IN HUMAN REPRODUCTIVE PHYSIOLOGY 



1963 



Editor: H. M. Carey Butterworths 



(Modern Trends Series no. 1) London 



373 pp., 107 figs., 18 tabs. Price: 75 s. 



This collaborative treatise consists of 21 short chapters, written by spe- 

 cialists discussing widely varying aspects of human reproductive physiology 

 and endocrinology. No doubt it is primarily of importance for the medical 

 profession, but some of the chapters may be of interest to others working in 

 the field of gestational and foetal physiology. We may mention specifically 

 the chapters on metabolism of sex hormones by the foetus, on the amniotic 

 fluid, and on placental exchange of oxygen and carbon dioxide. In other 

 chapters also reference is repeatedly made to physiological and metabolic 

 peculiarities of the (human) foetus. 



More strictly embryological subjects, such as fertilization, implantation, 

 establishment of placentation, foetal growth, are not included in the book, 

 since the stress lies on the metabolic and endocrinological aspects of repro- 

 duction (sensu stricto) , pregnancy and parturition. 



The book is a useful source of references to the widely scattered literature, 

 particularly that which records the most recent advances made. 



Contributors: Brown (Melbourne, Australia), Burnard (Sydney, Australia), Chesley (New 

 York, N.Y.), Diczfalusy (Stockholm), Hawker (Brisbane, Australia), Hellegers (Baltimore, 

 Md.). Hon (Los Angeles, Calif.), James (New York, N.Y.), Liley (Auckland, N. Zealand), 

 Loraine (Edinburgh), Narik (Vienna), Phillips (New York, N.Y.), Scandrett (Edinburgh), 

 Schmidt-Elmendorff (Dusseldorf), Sinclair (Auckland, N. Zealand), Steinbeck (Sydney. 

 Autralia), Villee (Boston, Mass.), Whittlestone (Sydney, Australia). 



9. FORTSCHRITTE DER ZOOLOGIE 



1962 

 Editor: G. Czihak Gustav Fischer Verlag 



(Volume 14) Stuttgart 



547 pp., 120 figs. 



This is the first time that a volume of this important serial publication is 



303 



