of egg types according to amount and distribution of deutoplasm; Egg and 

 cleavage types in the various metazoans; Derivatives of the ectoderm, meso- 

 derm and endoderm; Metazoan classification on the basis of mesoderm and 

 coelom development; and General metazoan classification (with reference to 

 genera cited in the text). Finally a brief list of suggested books is given. The 

 book is concluded by a detailed subject index. 



10 CELLS INTO ORGANS 

 The forces that shape the embryo 



1969 

 by }. P. Trinkaus Prentice-Hall, Inc. 



Found, of Developm. Biol. Series Englewood Cliffs, N.J. 



237 pp., 64 figs. Price: $ 6.95; 28 s. (paper) 



70 s. (cloth) 



This book was intended as an essay — rather than an exhaustive survey — 

 on some of the major problems of cell contact and cell movement, particularly 

 as they relate to changes in shape of multicellular systems during develop- 

 ment. In contrast to what the title suggests, it deals much more extensively 

 with early morphogenesis (gastrulation and neurulation) than with organo- 

 genesis in the strict sense. The treatment is modern, objective, and critical. 



The first six chapters deal with cellular aspects from a broad biological 

 viewpoint. The emphasis is on animal cells, but some attention is devoted to 

 the cellular slime molds. Among the subjects discussed are mechanisms of 

 cell locomotion, directional movements and chemotaxis, the structural basis 

 of cell adhesion, and physiological mechanisms of cell adhesion. Chapter 

 seven deals succinctly but competently with cell segregation in vitro and the 

 various theories proposed to explain it. The remaining seven chapters deal 

 with multicellular aspects, exemplified largely by the early morphogenetic 

 movements of echinoderms, amphibians, teleosts, and the chick. The epilogue 

 devotes special attention to the role of microfilaments and microtubules, the 

 implications of contact inhibition, the role of the cell membrane as an auto- 

 nomous unit, and the genetic control of morphogenetic movements. 



Each chapter is concluded by a selective bibliography. The book is ade- 

 quately illustrated with line drawings, photomicrographs, and electron micro- 

 graphs. It is concluded by author and subject indexes. 



11 THE CHROMOSOME THEORY OF INHERITANCE 



Classic papers in development and heredity 

 1968 

 Editor: B. R. Voeller Appleton-Century-Crofts 



246 pp., 7 figs., 10 tbs. New York 



(paper-bound) Price: $ 2.95 



Although the title of this "book of readings" might suggest that it is chiefly 

 of interest to geneticists, heredity and development are, and always were in- 

 separable. This book is therefore equally commendable to students of 

 embryology. 



The editor has made a very interesting selection of classical papers, some 

 reproduced in full and some in part only, the authors ranging from Kolreuter 

 in the late 18th to Dobzhansky in the early 20th century. The German and 

 French papers were carefully translated into English. A few original illustra- 

 tions were included. The papers are linked by brief but expert comments by 

 the editor. 



The papers are grouped into seven sections as follows: I. The role of the 

 nucleus in fertilization (papers by Hertwig and Fol); II. The equivalence of 

 contribution of the two parents (paper by Kolreuter); III. The role of the 



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