In this comprehensive and original monograph, Professor Rene Louis presents in minute detail in one volume the gross anatomy, nerve supply, biomechanics, and microcirculation of the spine. He also presents the surgical approaches to the vertebral bodies and their contents. Professor Louis is a great anatomist and this book has been prepared from his personal observations, both anatomical and surgical. His studies have been meticulously conducted and contain much original research, for instance his work on the motion of the neural elements within the lumbar vertebral canal. The illustrations are neady all original and very often a photograph of the neural or vascular elements is presented alongside a drawing of a given important anatomical area. For all these reasons, this inspiring treatise makes a valuable contri- bution to our knowledge of the spine and forms a basis for an under- standing of the intricacies of surgical anatomy and approaches. It will be especially valuable to the spinal surgeon, but the medical student, the orthopedic resident (or registrar), and the anatomist will also find it extremely useful. Leon L. Wiltse, M.D.