ILLUSTRATIONS

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Walter Libby
Earliest Picture known of a Surgical Operation. Egypt, 2500 B.C. 6
St. Thomas Aquinas overcoming AverroËs 54
Dr. Gilbert showing his Electrical Experiments to Queen Elizabeth and her Court 72
The Tichonic Quadrant 88
Wadham College, Oxford 104
Sir Isaac Newton 112
John Dalton collecting Marsh Gas 162
The First Successful Heavier-than-air Flying Machine 236

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