More than a century before printing, scientists at Merton College, Oxford, developed a theorem of “a uniform acceleration and a movement uniform at the speed possessed by the uniformly accelerating body at the middle instant of the time of acceleration.” With the invention of uniform repeatable and movable types we enter further into this medieval world of measurable quantities. What Clagett does is to establish the lines of continuity between Greek visual analysis and medieval science, and to show how much further the scholastic mind pushed the Greek concepts. The Merton kinematics spread to Italy and France. This was an idea for translating motion into visual terms: The basic idea of the system is simple. Geometric figures, particularly areas, can be used to represent the quantity