xii CONTENTS 



25. Elements Constituting Major Organic Metabolites 514 



25.1. Introduction— 25.2. Carbon— 25.3. Hydrogen — 25.4. Oxygen— 25.5. Nitro- 

 gen — 25.6. Sulfur — 25.7. Phosphorus. 



26. Elements Constituting Major Mineral Metabolites 520 



26.1. Introduction — 26.2. Sodium — 26.3. Potassium — 26.4. Calcium — 26.5. Mag- 

 nesium — 26.6. Chlorine. 



27. Trace Elements Known to Be Essential in Animals and Plants 524 



27.1. Introduction— 27.2. Iron— 27.3. Iodine — 27.4. Manganese — 27.5. Copper— 

 27.6. Zinc— 27.7. Cobalt— 27.8. Molybdenum— 27.9. Boron— 27.10. Aluminum— 

 27.11. Silicon— 27.12. Vanadium 



28. Elements Not Known to Be Essential to Life 530 



28.1. Introduction — 28.2. Possible micronutrient elements — 28.3. Elements of 

 importance to pharmacology and toxicology — 28.4. Noble gases — 28.5. Rare- 

 earth elements (lanthanide series) and other elements in fission — 28.6. New rare- 

 earth elements (actinide series) — 28.7. Other elements. 



29. Isotopes in Therapy and Diagnosis 537 



29.1. Introduction— 29.2. Radiophosphorus — 29.3. Radioiodine — 29.4. Radio- 

 sodium — 29.5. Radiocolloids — 29.6. Other isotopes 



30. Bibliography 552 



30.1. General references — 30.2. Americium — 30.3. Antimony — 30.4. Argon — 30.5. 

 Arsenic— 30.6. Astatine— 30.7. Barium— 30.8. Bismuth— 30.9. Boron— 30.10. Bro- 

 mine— 30.11. Calcium— 30.12. Carbon— 30.13. Cerium— 30.14. Cesium— 30.15. 

 Chlorine— 30.16. Cobalt— 30.17. Columbium— 30.18. Copper— 30.19. Curium— 

 30.20. Deuterium— 30.21. Fluorine— 30.22. Gold— 30.23. Hydrogen— 30.24. Iodine 

 —30.25. Iron— 30.26. Krypton— 30.27. Lanthanum— 30.28. Lead— 30.29. Lithium 

 — 30.30. Magnesium — 30.31. Manganese — 30.32. Mercury — 30.33. Molybde- 

 num — 30.34. Neptunium — 30.35. Nitrogen — 30.36. Oxygen — 30.37. Phosphorus — 

 30.38. Plutonium — 30.39. Polonium — 30.40. Potassium — 30.41. Praseodymium— 

 30.42. Prometheum — 30.43. Protactinium — 30.44. Radium and radon — 30.45. 

 Rubidium— 30.46. Ruthenium— 30.47. Selenium— 30.48. Sodium— 30.49. Stron- 

 tium— 30.50. Sulfur— 30.51. Tellurium— 30.52. Thorium— 30.53. Tritium— 30.54. 

 Uranium — 30.55. Xenon — 30.56. Yttrium — 30.57. Zinc— 30.58. Zirconium. 



Index 643 



