The Increasing Corruption of Newton's Diagrams

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I am indebted to the librarians of Trinity College and the University Library, Cambridge, as well as to the Trustees of the British Museum, for permission to reproduce Newton's original diagrams. I would also like to acknowledge my gratitude to D. T. Whiteside for help which has resulted in several improvements. I have received grants for the study of Newton's optics from Forskningsfondet av 1919 and from Norges almenvitenskapelige Forskningsfond.

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