microscope have led to a further development of our knowledge of the processes 

 involved. 



This monograph on mitosis deals with nuclear division with the help of 

 spindle formation, thus including meiosis, but excluding cytokinesis. It deals 

 mainly with the literature of the last thirty years, while Wassermann (1929) 

 has given an excellent review of the literature up to that date. 



The author has tried to show that mitosis is not a uniform process, but is 

 composed of different mechanisms upon which the biochemical and biophysical 

 forces act differently. As in so many biological processes, generalizing hypo- 

 theses do not bring us much further in our understanding of the processes 

 involved. This monograph once more tries to convince us that a better under- 

 standing might only obtained by a sharper and more accurate analysis of the 

 processes themselves. 



P. D. NIEUWKOOP 



"THE CULTIVATION OF ANIMAL AND PLANT CELLS" 



1954 



by Ph. R. White The Ronald Press Company, New York 



239 pp. with 54 figs Price: $ 6,— 



This manual on cultivation of animal and plant cells has been written for 

 students who are interested in this subject. All the major techniques are des- 

 cribed, and some simple techniques are added for the beginner. The author has 

 intended to emphasize the essential importance of the cell itself as the basic 

 physiological entity out of which "organisms" are constituted. 



This manual essentially forms an extensive laboratory guide, written 

 by a very experienced worker, so that it contains all the essential information in 

 a very concise form. The clearly w^ritten and well organised text, which has 

 been illustrated adequately, will certainly help interested students to overcome 

 the natural fear of entering this field of research, which is generally considered 

 difficult, and will actually stimulate them to try the cultivation of animal or 

 plant cells themselves. We appreciate it very much that the author has given 

 the techniques for the cultivation of both animal and plant cells, and hope that 

 this book will find many young readers. 



P. D. NIEUWKOOP 



"METHODIK DER GEWEBEZQCHTUNG" 

 1954 



by K. F. Bauer S. Hirzel Verlag, Stuttgart 



248 pp. with 130 figs Price: ? 



According to the author the method of tissue culture has penetrated into 

 many branches of medecine and biology, and the number of different tech- 

 niques has increased so much, that a survey of the latter might actually help 

 the workers in this field to become better acquainted with the many-sided 

 aspects of this biological experiment. 



This book might best be characterized as being in between a laboratory 

 guide and a manual on tissue culture. We feel that it would have been 

 easier for the reader if the book had been given the form of a pure laboratory 



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