1. Noninvasive measurements of bone mass and their clinical significance

   • S. H. Cohn
   • J. F. Aloia
   • J. M. Letteri

   Editorial Pages: 1 - 3

2. Use of stable⁴⁸Ca in the clinical measurement of intestinal calcium absorption

   • R. Neer
   • G. Tully
   • D. J. Hnatowich

   Clinical Investigations Pages: 5 - 11

3. Mean wall thickness of trabecular bone packets in the human iliac crest: Changes with age

   • P. Lips
   • P. Courpron
   • P. J. Meunier

   OriginalPaper Pages: 13 - 17

4. Hyaluronate in articular cartilage: Age-related changes

   • E. J. -M. A. Thonar
   • M. B. E. Sweet
   • G. Lyons

   Laboratory Investigations Pages: 19 - 21

5. Effects of parathyroid hormone on the osteoclastic pool, bone resorption and formation in rat alveolar bone

   • Agnès Vignery
   • Roland Baron

   OriginalPaper Pages: 23 - 28

6. Incorporation of tetracycline into impeded and unimpeded mandibular incisors of the mouse

   • C. J. Gibson
   • V. F. Thornton
   • W. A. B. Brown

   OriginalPaper Pages: 29 - 31

7. A comparison of Ca²⁺-, Mg²⁺-ATPase and alkaline phosphatase activities of rat incisor pulp

   • M. K. Guo
   • H. H. Messer

   OriginalPaper Pages: 33 - 38

8. Influence of partially purified extracts ofSolanum malacoxylon on bone resorption in organ culture

   • M. Liskova-Kiar
   • L. Proschek

   OriginalPaper Pages: 39 - 45

9. Scanning electron microscope study of separated calcospherites from the matrices of different mineralizing systems

   • A. Boyde
   • J. Sela

   OriginalPaper Pages: 47 - 49

10. Effects of fluoride on in vitro calcification of tendon matrix

    • C. L. Wadkins
    • R. A. Luben

    OriginalPaper Pages: 51 - 59

11. On the nature of arterial and lung calcifications induced in cattle bySolanum glaucophyllum

    • R. C. Puche
    • H. Faienza
    • J. A. Dristas

    OriginalPaper Pages: 61 - 64

12. Effects of vitamin D₃ metabolites on bone cell calcium transport

    • Rosemary Dziak

    OriginalPaper Pages: 65 - 70

13. A proposed cellular mechanism for calcium transport in the intestinal epithelial cell

    • Elora J. Weringer
    • Susan B. Oldham
    • John E. Bethune

    OriginalPaper Pages: 71 - 79

14. Mechanism of osteoclastic bone resorption: A new hypothesis

    • J. N. M. Heersche

    Comments Pages: 81 - 84

15. Quantitative histology of bone: A computerized method of measuring the total mineral content of bone

    • H. B. Phillips
    • S. Owen-Jones
    • B. Chandler

    OriginalPaper Pages: 85 - 89

16. Announcements

    Announcement Pages: 91 - 91

17. Electrical osteogenesis—Pro and con

    • Robert O. Becker

    Review Pages: 93 - 97

18. Tetracycline double-labeling of iliac trabecular bone in 41 normal adults

    • F. Melsen
    • L. Mosekilde

    Clinical Investigations Pages: 99 - 102

19. Effect of testosterone therapy on bone formation in an osteoporotic hypogonadal male

    • Daniel T. Baran
    • Michele A. Bergfeld
    • Louis V. Avioli

    OriginalPaper Pages: 103 - 106

20. Paget's disease of bone and hyperparathyroidism: Coincidence or causal relationship?

    • Solomon Posen
    • Phillip Clifton-Bligh
    • Margaret Wilkinson

    OriginalPaper Pages: 107 - 109

21. Types of “H₂O” in human enamel and in precipitated apatites

    • Racquel Z. LeGeros
    • Gilbert Bonel
    • Renee Legros

    OriginalPaper Pages: 111 - 118

22. Intestinal calcium absorption, serum phosphate, and parathyroid hormone in patients with chronic renal failure and osteodystrophy before and during hemodialysis

    • J. R. Juttmann
    • J. C. W. Hagenouw-Taal
    • J. C. Birkenhäger

    OriginalPaper Pages: 119 - 126

23. Biological calcium phosphates and their role in the physiology of bone and dental tissues I. Composition and solubility of calcium phosphates

    • F. C. M. Driessens
    • J. W. E. van Dijk
    • J. M. P. M. Borggreven

    Laboratory Investigations Pages: 127 - 137

24. Surface area of dental enamel, bone, and hydroxyapatite: Chemisorption from solution

    • D. N. Misra
    • R. L. Bowen
    • G. J. Mattamal

    OriginalPaper Pages: 139 - 142

25. Effect of chronic low-level cadmium intoxication on the haversian remodeling system in dogs

    • C. Anderson
    • K. D. Danylchuk

    OriginalPaper Pages: 143 - 148

26. A reevaluation of the cause of acute hypercalcemia following intravenous administration of lead acetate

    • R. V. Talmage
    • C. J. Vander Wiel
    • H. Norimatsu

    OriginalPaper Pages: 149 - 153

27. Plasma disappearance of rabbit α₂ HS-glycoprotein and its uptake by bone tissue

    • J. T. Triffitt
    • M. E. Owen
    • J. M. Wilson

    OriginalPaper Pages: 155 - 161

28. Correlation of lysozyme activity with proteoglycan biosynthesis in epiphyseal cartilage

    • A. Schmidt
    • U. Rodegerdts
    • E. Buddecke

    OriginalPaper Pages: 163 - 172

29. Effect of solubilized bone matrix components on cultured fibroblasts derived from neonatal rat tissues

    • T. Anastassiades
    • O. Puzic
    • R. Puzic

    OriginalPaper Pages: 173 - 179

30. Cellular calcium distribution in fetal bones studied with K-pyroantimonate

    • E. H. Burger
    • J. L. Matthews

    OriginalPaper Pages: 181 - 190

31. Calcium phosphate carbonate transformations in renal calculi

    • Edmund D. Pellegrino
    • Robert M. Biltz

    Comment Pages: 191 - 193

32. Announcements

    Announcement Pages: 194 - 194

33. Calcium urolithiasis: Is it analogous to bone formation?

    • Charles Y. C. Pak

    Editorial Pages: 195 - 197

34. Effects of a single dose of fluoride on calcium metabolism

    • M. J. Larsen
    • F. Melsen
    • M. S. Christensen

    Clinical Investigation Pages: 199 - 202

35. Inhibition of parathyroid hormone-induced fetal rat bone resorption in vitro by nerve growth factor

    • Steven L. Teitelbaum
    • Roger Y. Andres
    • Arnold J. Kahn

    Laboratory Investigations Pages: 203 - 208

36. Effect of mithramycin on boneβ-glucuronidase and resorption

    • David T. Kiang

    OriginalPaper Pages: 209 - 213

37. Potentiation of the effects ofSolanum malacoxylon extracts on rat intestinal phosphate and calcium absorption by incubation with ruminal fluid

    • A. R. de Boland
    • M. I. Skliar
    • R. L. Boland

    OriginalPaper Pages: 215 - 219

38. Effects produced by the administration of high doses of 1,25-dihydroxycholecalciferol to the chick embryo

    • Roberto Narbaitz
    • Susan Tolnai

    OriginalPaper Pages: 221 - 226

39. Localization of prostaglandin synthetase in chicken epiphyseal cartilage

    • F. K. Northington
    • T. D. Oglesby
    • R. E. Wuthier

    OriginalPaper Pages: 227 - 236

40. Correlation of freeze-fracture and scanning electron microscopy of epiphyseal chondrocytes

    • Thomas K. Borg
    • Raymond B. Runyan
    • Roy E. Wuthier

    OriginalPaper Pages: 237 - 241

41. Stimulation of duodenal and ileal absorption of phosphate in the chick by low-calcium and low-phosphorus diets

    • J. Fox
    • A. D. Care

    OriginalPaper Pages: 243 - 245

42. Some observations on the calcium ion binding to the eggshell matrix

    • G. Abatangelo
    • D. Daga-Gordini
    • R. Cortivo

    OriginalPaper Pages: 247 - 252

43. Lead-loaded ion-exchange resin bead as a calcergen

    • G. Ellender
    • D. K. B. Sewell
    • E. Storey

    OriginalPaper Pages: 253 - 258

44. Mineral substance of bone tissue and of experimental cutaneous calcinosis in rats: Chemical analysis and ESR study

    • H. J. Tochon-Danguy
    • M. Geoffroy
    • C. A. Baud

    OriginalPaper Pages: 259 - 265

45. Natural calcification of the prosomatic endosternite in the phalangiidae (Arachnida: Opiliones)

    • J. Kovoor

    OriginalPaper Pages: 267 - 269

46. Ultrastructure, histology, and innervation of the mantle edge of the freshwater pulmonate snailsLymnaea stagnalis andBiomphalaria pfeifferi

    • U. Zylstra
    • H. H. Boer
    • T. Sminia

    OriginalPaper Pages: 271 - 282

47. Announcements

    Announcement Pages: 283 - 284