1. Engfeldt, B., Zetterström, R., and Winberg, J., J. Bone and Joint Surg., 38A, 1323 (1956).
2. Jowsey, J., in Bone Biodynamics, edit. by Frost, H. M. (Little, Brown and Co., 1964).
3. For Schmorl's method see Staining Procedures, edit. by Conn, H. J., et al. (The Williams and Wilkins Co., 1960).
4. Frost, H. M., Bosworth, D. M., Halliburton, R. H., and Sezgin, Z., Henry Ford Hosp. Med. Bull., 9, 404 (1961).
5. van Duyn, P., J. Histochem. Cytochem., 9, 234 (1961).