| Foreword |
| Chapter 51. | Michael Scot. |
| Chapter 52. | William of Auvergne. |
| Chapter 53. | Thomas of Cantimpré. |
| Chapter 54. | Bartholomew of England. |
| Chapter 55. | Robert Grosseteste. |
| Chapter 56. | Vincent of Beauvais. |
| Chapter 57. | Early Thirteenth Century Medicine: Gilbert of England and William of England. |
| Chapter 58. | Petrus Hispanus. |
| Chapter 59. | Albertus Magnus. |
| | I. | Life. | | II. | As a scientist. | | III. | His allusions to magic. | | IV. | Marvelous virtues in nature. | | V. | Attitude toward astrology. |
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| Chapter 60. | Thomas Aquinas. |
| Chapter 61. | Roger Bacon. |
| | I. | Life. | | II. | Criticism of and part in medieval learning. | | III. | His experimental science. | | IV. | Attitude toward magic and astrology. | | V. | Conclusion. |
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| Chapter 62. | The Speculum Astronomiae. |
| Chapter 63. | Three Treatises Ascribed to Albert. |
| Chapter 64. | Experiments and Secrets of Galen, Rasis, and Others |
| | I. | Medical and Biological. | | II. | Chemical and Magical. |
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| Chapter 66. | Picatrix. |
| Chapter 67. | Guido Bonatti and Bartholomew of Parma. |
| Chapter 68. | Arnald of Villanova. |
| Chapter 69. | Raymond Lull. |
| Chapter 70. | Peter of Abano. |
| Chapter 71. | Cecco d’Ascoli. |
| Chapter 72. | Conclusion. |