This symposium volume reflects skillful selection of authors as well as good editing. The contributors are all outstanding in their special fields of research; they present detailed and thoroughly documented reports, stick closely to the subject of ovulation control, and, with restriction to warm-blooded animals, cover the principal aspects in which there has been recent progress. Except for a few remarks of chairmen, which pleasantly convey the flavor of a symposium, the discussions are relevant; most are concise; a few have the stature of separate papers complete with references and even tables, graphs, or illustrations. There is also a good index. Control of Ovulation is the finest symposium volume I have read.
Categories of factors that are examined include: neural, gonadotropic, steroid (both natural and synthetic), ovarian competence, and functional anatomical aspects of the ovary. The papers are specialized to the degree that only one, Fraps' on chicken ovulation, considers