information, including literature references and illustrations. 



The book is adequately illustrated and is concluded by a subject index and 

 an index to contributions of symposium participants. 



42 THE NUCLEOLUS, ITS STRUCTURE AND FUNCTION 



International Symposium 

 1966 



Editors: W. S. Vincent and O. L. Miller Jr. U.S. Government Printing Off. 

 Nat. Cancer Inst. Monograph 23 Washington, D.C. 



630 pp.. 313 figs., 57 pis., 48 tbs. Price: $ 5.— 



Contributors: Barr (Madison, Wis.), Bemhard (Villejuif), Birnstiel et al. (Edinburgh), 

 Brown (Baltimore, Md.), Busch et al. (Houston, Tex.), Chouinard (Quebec City, Canada), 

 Comb et al. (Boston, Mass.), Das et al. (Berkeley, Calif.), Edstrom (Stockholm), Estable 

 (Montevideo), Ficq (Brussels), Gall (New Haven, Conn.), Georgiev (Moscow), Hyde 

 (Austin, Tex.), Kasten et al. (Pasadena, Calif.), Kleinfeld (Syracuse, N.Y.), Lafontaine et al. 

 (Quebec, Canada), Lettre et al. (Heidelberg), Love (Philadelphia, Pa.), Maggio (Palermo), 

 Miller (Oak Ridge, Tenn.), Pelling et al. (Tiibingen), Penman et al. (Cambridge, Mass.), 

 Perry (Philadelphia. Pa.), Ritossa et al. (Urbana, 111.), Schultz (Philadelphia, Pa.), Siebert 

 (Houston, Tex.), Sirlin et al. (Edinburgh), Sotelo et al. (Montevideo), Stenram (Uppsala), 

 Swift etal. (Chicago, 111.). Tandler (Buenos Aires), Vincent et al. (Pittsburgh, Pa.), Wadding- 

 ton (Edinburgh), Wallace (Amherst, Mass.), Woods (Newark, Delaware) 



This large volume, published at a surprisingly low price, embodies the 

 proceedings of an international symposium held at Montevideo, Uruguay, in 

 December 1965. The symposium had about 120 participants from 15 countries; 

 the majority came from four South-American countries and from North 

 America; seven European countries were represented. The symposium was 

 sponsored by various South-American and United States organizations. 



The book contains 36 papers, the discussions which followed most of them, 

 and a panel discussion on ribosome biogenesis. The papers are grouped in five, 

 sections, entitled respectively: "Nucleolar structure" (11 papers), "Nucleolar 

 composition" (7 papers), "The nucleolus in the cell cycle and during devel- 

 opment" (7 papers), "Nucleolar genes" (5 papers), and "The nucleolus and 

 ribosome biogenesis" (5 papers). There is an introductory symposium orien- 

 tation by J. Schultz and a summation by C. H. Waddington. 



At least half of the papers are of immediate interest to developmental biol- 

 ogists. It is impossible to enumerate them here. All papers are in English, and 

 all are preceded by an English abstract and followed by an abstract in Spanish. 



The book contains a large number of photographs and electron micrographs, 

 all very well reproduced on glossy paper. An appendix contains the approved 

 report of an ad hoc committee on nucleolar nomenclature. The book is con- 

 cluded by a list of participants, a name index, and a subject index. 



43 PREIMPLANTATION STAGES OF PREGNANCY 



1965 

 Editors: G. E. W. Wolstenholme and M. O'Connor J. 6 A. Churchill, Ltd. 

 Ciba Foundation Symposium London 



442 pp., 123 figs., 5 pis., 31 tbs. 



Contributors: Adams (Cambridge), Austin (Covington, La.), Bomsel-Helmreich (Jouy-en- 

 Josas), Brinster (Philadelphia, Pa.), Cole (Glasgow), Dickmann (Nashville, Tenn.), Enders 

 (St. Louis, Mo.), Gates (Palo Alto, Calif.), Glass (San Francisco, Calif.), Kirby (Oxford), 

 Mintz (Philadelphia, Pa.), Mulnard (Bruxelles), Paul (Glasgow), Pincus (Shrewsbury, Mass.), 

 Russell (Oak Ridge, Tenn.), Tarkowski (Warsaw) 



This symposium was organized by the Ciba Foundation and held in London 

 in April 1965. Of the participants 12 came from the U.S.A., 9 from the United 

 Kingdom, and 5 from other European countries. All are specialists actively 

 working in the field concerned. 



293 



