| PAGE |
| PREFACE | ix |
| LIST OF ILLUSTRATIONS | xiii |
| 1. SOME CHARACTERISTICS OF MEDIÆVAL THOUGHT | 1 |
| 2. PYTHAGORAS AND HIS PHILOSOPHY | 8 |
| 3. MEDICINE AND MAGIC | 25 |
| 4. SUPERSTITIONS CONCERNING BIRDS | 34 |
| 5. THE POWDER OF SYMPATHY: A CURIOUS MEDICAL SUPERSTITION | 47 |
| 6. THE BELIEF IN TALISMANS | 57 |
| 7. CEREMONIAL MAGIC IN THEORY AND PRACTICE | 87 |
| 8. ARCHITECTURAL SYMBOLISM | 111 |
| 9. THE QUEST OF THE PHILOSOPHER'S STONE | 121 |
| 10. THE PHALLIC ELEMENT IN ALCHEMICAL DOCTRINE | 149 |
| 11. ROGER BACON: AN APPRECIATION | 183 |
| 12. THE CAMBRIDGE PLATONISTS | 193 |
