A collection of twenty original essays on the history of science and mathematics. The topics covered embrace the main themes of Whiteside’s scholarly work, emphasising Newtonian topics: mathematics and astronomy to Newton; Newton’s manuscripts; Newton’s Principia; Newton and eighteenth-century mathematics and physics; after Newton: optics and dynamics. The focus of these themes gives the volume considerable coherence. This volume of essays makes available important original work on Newton and the history of the exact sciences. This volume has been published in honour of D. T. Whiteside, famous for his edition of The Mathematical Papers of Isaac Newton.