This issue of "The Medical Clinics of North America" is devoted to a summary of recent advances in medicine in a variety of subjects. Included are new developments in the therapy of edema, radioiodine in the diagnosis of thyroid disorders, clinical studies of magnesium metabolism, the management of hemorrhagic disorders, and the effects of corticotropin and cortisone on the digestive system. In all, there are 21 well-written chapters, all with biographical references included. The volume is well indexed. There is much useful medicine here, particularly for the general practitioner. The internist, however, will find little that is new.