tion. The book would be very suitaDle for a quick orientation in 

 the field for biologists of other specializations. 



The book opens with three chapters on overall and cellular 

 growth (including biochemical aspects). Then follow six chapters 

 on the control of growth Dy plant hormones and other growth reg- 

 ulators, and by external factors. Aspects of growth correlation 

 in the whole plant and the possiDle mechanisms of action of phy- 

 tohormones are discussed in separate chapters. The last four 

 chapters are devoted to the control of differentiation, and to 

 flowering, dormancy, and senescence. 



No literature is cited in the text or the figure captions. At 

 the end of the book there is a brief list of suggested further 

 readings. The book is well produced and Illustrated with origi- 

 nal line drawings and good photographic plates. 



82. 



Th.BUTTERFASS. 1970. WACHSTUMS- UND ENTWICKLUNGSPHYSIOLOGIE DER 



PFLANZE 



Quelle & Meyer, Heidelberg. 242 pp., 8l figs., l6 tabs., suDject 



index. DM 17.00 (paper) 



Contents: 1. Grundlagen; 2. Wachstum; 3. Entwicklung und Um- 

 welt; 4. Ruhezustande und Reaktivierungen; 5. Emoryonalisie- 

 rung und Regeneration; 6. Einige Formbildungen an vegetativen 

 Organen; 7. Die generative Entwicklung; 8. Der Generations- 

 wechsel; 9. Die Abstossung von Organen 



This book is a successful attempt to synthesize in concise 

 form the most Important principles and problems of plant growth 

 and development. It is surprisingly rich in content for its size 

 and bears evidence to the wide 'knowledge of the author; the 

 treatment is thoroughly modern and is characterized oy a careful 

 balance of fact and theory, and of morphology and physiology. 

 Throughout, the whole plant is never lost sight of, and much em- 

 phasis is placed on integrative principles. The Dook presupposes 

 a certain knowledge of plant morphology and general oiology. 



Ch.l places the suDject in broad theoretical perspective. It 

 has sections on eplgenesis, on open systems and entropy, and on 

 mechanisms of regulation. Ch.2 deals not only with the major 

 growth substances Dut also with such subjects as ribosomes, 

 plastids, and mitochondria. Ch.3 has sections on induction, po- 

 larity, and pattern formation. The word "Embryonallsierung" in 

 the title of ch.5 is a substitute for "dedlf ferentiation" , which 

 the author considers an unhappy term. Ch.6 deals with the orga- 

 nization of the shoot and root apex, and with factors involved 

 in leaf development. . 



The book is illustrated with good line drawings which admirably 

 support the text. There is a selective but good and modern bib- 

 liography. At the end of each chapter the most important titles 

 for further reading are indicated. The book is well printed and 

 very reasonably priced. 



O T 



I?D. J. PHILLIPS. 1971. INTRODUCTION TO THE BIOCHEMISTRY AND 



PHYSIOLOGY OF PLANT GROWTH HORMONES 



McGraw-Hill, New York, etc. Series in organismic biology. A, 



173 pp., 86 figs., subject index. £ 2.40, DM 12.45 (paper) 

 Contents: 1. The nature of plant growth hormones; 2. Growth 

 hormones in shoot and root development; 3. Growth hormones in 

 phototropism and geotropism; 4. Hormones and reproduction in 

 higher plants; 5. Growth hormones and phase change In pianos, 



45 



