In this volume, Dr Peck has chosen eight timely subjects in the bone and mineral field. H. DeLuca does his usual fine job of reviewing recent advances that concern vitamin D, but most of the material is readily available in other recently published sources. P. Price and J. Termine review exciting, new developments in the areas of noncollagen proteins, γ-carboxyglutamic acid protein, and osteonectin that are found in the bone matrix. These bone matrix proteins may be important in normal mineralization and may be altered by a variety of skeletal diseases.
The chapter on calcitonin by Talmage et al stresses the potential role of calcitonin in relation to the gastrointestinal tract as well as to the skeletal storage of calcium in the region of the surface osteocytes. Talmage is of the opinion that calcitonin is more important in these roles rather than as a hypocalcemic or osteoclast-inhibiting factor. While the