This volume is a compendium of papers presented in June 1968 at a working conference on gonadotropins. The editors are to be congratulated for the speed of publication. The participants include most of the key investigators in this field, with some notable omissions, such as Roos and Wide of Sweden. The papers are divided into sections on chemistry, biology, immunoassay, radioimmunoassay, standards, and therapeutic use of gonadotropins. The result is a very "mixed bag." Most of the new information is technological and of interest only to research investigators at the bench. A good deal of the material has been published elsewhere, and other large sections are either antique, merely confirmatory of published work, or trivial. For the investigator directly concerned with gonadotropins, much information may be gained by careful sifting, but the clinician will find little new fare.
The state of the critical art of assay is such that interlaboratory