the cell cycle (8 papers, headed by a review by Zeuthen); Gene expression in the cell 

 cycle (8, headed by Mitchison); Nuclear and chromosomal activity in the cell cycle (6, 

 headed by Mazia). 



92. 



Z. A. RYABININA and V. A. BENYUSH. 1973. CELLULAR POLYPLOIDY AND 

 HYPERTROPHY IN GROWTH PROCESSES AND RENEWAL (in Russian) 

 Meditsina, Moscow. 208 pp., 58 figs., 42 tabs. English summary 



Ch. 1. Cytological characteristics of cell populations in the internal organs of adult 

 animals; ch.2. Growth aspects of cytological changes; ch.3. Analysis of normal and 

 reparative organ growth; ch.4. Methods for the investigation of polyploidy; 16-page 



bibliography (5 pp. Russian). 



93. 



L.SACHS. 1974. DIE REGULATION VON WACHSTUM UND DIFFERENZIERUNG 



BEI NORMALEN UND TUMOR-ZELLEN 



Akad. der Wissensch. und der Literatur, Mainz; F. Steiner, Wiesbaden. Karl-August- 

 Forster-Lectures 7. 28 pp. ca. DM 9.80 (paper) 



Text of a lecture presented in April 1971 in Mainz; summary of work on normal and 

 transformed fibroblasts and granulocytes in vitro; 15 pp. plus 5 pp. discussion; no 

 illustrations; no references. 



94. 



W. J. VAN WAGTENDONK, ed. 1974. PARAMECIUM, a current survey 



Elsevier, Amsterdam, etc. XVII1,499 pp., 304 figs., 53 tabs., subject index. $58.50, 



DEL 140.00 



Contents (abbreviated): 1. Morphology, taxonomy and general biology (Vivier); 2. 

 Mating type determination and development (Butzel); 3. Surface antigens (Finger); 4. 

 Behavior and motor response (Dryl); 5. Growth patterns and morphogenetic events in 

 the cell cycle (Kaneda and Hanson); 6. The structure oi Paramecium as viewed from its 

 constituent levels of organization (Ehret and McArdle); 7. Nutrition (Van Wagten- 

 donk); 8. Intracellular particles (Soldo) 



As the editor of this book says in his preface, topics were selected for inclusion that 

 had not already been extensively discussed in other books and recent reviews. It follows 

 that the book cannot claim to be entirely comprehensive. There is also some overlap 

 among chapters, and no attempt at unification of terminology has been made. Yet the 

 individual chapters are valuable reviews and reference sources, which also contain much 

 new material. All chapters are well organized and have been updated by means of 

 addenda. 



Obviously it is ch.5 (44 pages) that is of most direct interest to our readers. Unlike the 

 other chapters, it is largely based on the authors' own research on carefully timed 

 interfission stages. Three phases are distinguished: post-fission, morphostatic, and mor- 

 phogenetic. Stages of stomatogenesis are compared with those in other hymenostome 

 ciliates. To explain overall growth patterns and the shape of the cell the authors postulate 

 a gel-like "framework" underlying the visible surface structures. 



The book is handsomely produced and superbly illustrated with numerous light and 

 electron micrographs and drawings. It is concluded by a bibliography on Paramecium 

 covering the two decades since 1953 (1354 titles). Regrettably, there is no author index. 



224 



