"FUNK.TIONELLE EMBRYOLOGIE DER WIRBELTIERE 

 (Der lebende Keimling)" 

 1957 

 by K. Peter f Johan Ambrosius Barth Verlag 



(edited by R. Zaunick) Leipzig 



Nova Acta Leopoldina N.F., N. 133, Band 19 Price: D.M. 6.80 



128 pp., 27 figs, and portrait of the author 



This monograph was published after the death of its author. It is his last 

 scientific work. The editor has provided it with a biographical and historical 

 preface. 



The author's starting point is the idea that the embryo at every moment of 

 its life must form a well-balanced functional unity, adapted to the changing 

 internal and external circumstances, notwithstanding the fact that some of its 

 constituent parts will acquire their proper functions only at much later stages. 

 Some of these parts acquire temporary functions of a different nature. 



The problems which result from the conflicting demands put to the embryo, 

 are illustrated with many examples from different developmental periods and 

 organ systems. The conclusions at which the author arrives are often very 

 hypothetical and speculative. Nevertheless it is interesting to take notice of a 

 train of thought which has up till now been neglected too much. 



"ENTWICKLUNGSPHYSIOLOGIE DER INSEKTEN" 



2nd edition, 1958 



by O. Pflugfelder Akad. Verlagsgesellsch. 



(Probleme der Biologie, Bd. 5) Geest & Portig K.-G. 



490 pp., 142 figs. Leipzig 



Price: D.M. 35.— 



The first edition of this book appeared in 1952. The present edition has 

 been considerably extended. The size has increased by 158 pages (nearly 

 50 %). Fifteen figures were added. Many new results could be incorporated. 

 Entirely new chapters were written on postembryonic development, growth 

 and diapause (particularly the external factors influencing them), biochemical 

 development, and the influence of the nervous system on muscle development. 



The manuscript of the second edition was already finished in 1955, but the 

 literature of 1956 and 1957 could be included in the bibliography. This is now 

 more than twice as long as in the first edition (77 pages). 



"DEVELOPMENTAL CYTOLOGY" 

 1959 

 Edited by Dorothea Rudnick The Ronald Press Co. 



(16th Growth Symposium, 1957) New York 



215 pp., 28 figs., 23 pis. Price: $ 7.00 



The present volume embodies all papers delivered at a Symposium held at 

 Kingston, R.I., in 1957. Six out of the ten authors are American scientists. 



The papers discuss new results concerning chromosomes, nucleoli, cyto- 

 plasmic organelles, cellular chemistry, and immune properties, all in relation 

 to cellular differentiation. The results were obtained in a variety of organisms, 

 both animal and vegetal. 



The well-printed book is concluded by an alphabetical index. 



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