xiv CONTENTS 



15 Rarefying Disease of the Skeleton: Observations Dealing 



with Aged and Dead Bone in Patients with Osteoporo- 

 sis, by Marshall R. Urist, Norman S. MacDonald, 

 Milton J. Moss, and William A. Skoog 385 



16 Microradiography of Bone Resorption, by Jenifer Jowsey 447 



17 Histophysical Studies on Bone Cells and Bone Resorption, 



by Richard W. Young 471 



18 Structure-Function Relationships in the Osteoclast, by 



Norman M. Hancox and Brian Boothroyd 497 



19 Bone Destruction by Vlultinucleated Giant Cells, by 



James T. Irving and Chester S. Handelman 515 



20 Resorption without Osteoclasts ( Osteolvsis ) , by Leonard 



F. Belanger, Jacques Robichon, B. B. Migicovsky, D. 

 Harold Copp, and Jacques Vincent 531 



21 In Vitro Studies of Bone Resorptive Mechanisms, by 



George Nichols, Jr. 557 



22 In Vitro Carbohydrate Metabolism of Bone: Effect of 



Treatment of Intact Animal with Parathyroid Extract, 



by Bernard K. Forscher and David V. Cohn 577 



23 Metabolic Action of Parathvroid Hormone on Rat Cal- 



varia, by C. M. Dowse, M. W. Neuman, K. Lane, and 



W. F. Neuman 589 



24 Some Chemical Factors Influencing Bone Resorption in 



Tissue Culture, by Paul Goldhaber 609 



25 The Possible Role of Clielation in Decalcification of Bio- 



logical Systems, by G. Neil Jenkins and C. Dawes 637 



26 Animal Collagenase and Collagen Metabolism, by 



Charles M. Lapiere and Jerome Gross 663 



Indexes 695 



