organogenesis. However, throughout the book the stress lies on the former, 

 and more particularly on its earlier phases. 



The book is richly illustrated, mainly with line drawings of histological 

 sections. The book contains a bibliography of 11 pages, and is concluded by 

 subject, taxonomic and author indexes. 



'DEVELOPMENTAL GENETICS AND LETHAL FACTORS" 



1961 

 by E. Hadorn Methuen & Cy. Ltd. 



(translated by U. Mittwoch) London 



373 pp., 129 figs., 27 tabs. John Wiley & Sons, Inc. 



New York 

 Price: 52 s. 6 d. 



This book is largely a direct translation of the German edition "Letal- 

 faktoren in ihrer Bedeutung fur Erbpathologie und Genphysiologie", which 

 appeared in 1955, and which was reviewed in the Supplement to the sixth 

 issue of this periodical (1956, p. 18). 



The author states that it would have been impossible to incorporate all the 

 literature which appeared since 1955, without rewriting the entire book. Never- 

 theless, data from about 100 recent publications have been included in the 

 English edition. The plan of the book has remained unaltered. The same holds 

 for the illustrative material used. The price of the English edition is lower than 

 that of the German one, while the presentation is also very good. 



"PHYSIOLOGY OF PREMATURITY" 

 1961 

 Editor: M. Kowlessar Josiah Macy, Jr. Foundation 



(Transactions of the 5th conference) New York 



238 pp., 92 figs., 9 tabs. Price: $ 5.50 



This report forms a sequel to the four reports announced in the three pre- 

 ceding issues. It contains group discussions on uterine and parturition mecha- 

 nisms, and on the prevention of prematurity and perinatal death. 



Participants: Allen (St. Louis, Mo.), Barron (New Haven, Conn.), Benirschke (Boston, 

 Mass.), Caldeyro-Barcia (Montevideo), Clifford (Boston, Mass.), Csapo (New York), 

 Douglas (New York), Gemzell (Stockholm), Hammond (Cambridge, England), Harper (Balti- 

 more, Md.), Hendricks (Cleveland, Ohio), Kass (Boston, Mass.), Kowlessar (Brooklyn, N.Y.), 

 Lanman (Brooklyn, N.Y.), Levine (New York), Noyes (Palo Alto, Cal.) , Osterlund (Helsinki), 

 Parks (Washington, D.C.), Reid (Boston, Mass.), Reynolds (Chicago, 111.), Smith (Boston, 

 Mass.), Villee (Boston, Mass.), Westin (Stockholm). 



"THE HATCHABILITY OF CHICKEN EGGS AS INFLUENCED BY 



ENVIRONMENT AND HEREDITY" 



1961 



by W. Landauer Univ. of Connecticut 



(Monograph nr. 1) Agr. Exp. Stat., Storrs, Conn. 



278 pp., 56 figs., 75 tabs. 



The subject matter covered by this monograph is adequately indicated by 

 its title. It is not necessary, therefore, to enumerate here the various chapters. 

 The book is essentially a work of compilation. The amount of information 

 gathered is reflected in the size of the bibliography, which covers 74 pages, 

 that is, nearly 30 % of the book. 



279 



