This volume is a very important contribution to the better understanding of a perplexing problem. Much of the material in the volume is based on the authors' personal observations at the Montreal Neurological Institute, where their work on seizures and localization is well known. The information is fundamental and gives perhaps the most comprehensive discussion on the subject to date. The chapters include a historical introduction, definitions and classifications, cortical localization, subcortical interrelationships, electrophysiology and experimental epilepsy, clinical observations on epileptic mechanisms, epileptogenic lesions, somatic motor seizures, and sensory, autonomie, psychical, and centrencephalic seizures. Much of the material is basic neurophysiology, but the orientation is definitely clinical. Of particular interest to the pediatrician is the excellent chapter on diagnosis and medical treatment, by Dr. Francis McNaughton. The chapters on electroencephalography (Jasper) and cranial roentgenography (Penfield) are most informative and remarkably comprehensive. The chapters on electrocortigraphy (Jasper) and surgical therapy (Penfield)