Note 1 — Front matter

This traditional view is expressed by almost every history of horology. An ultimate source for many of these has been the following two classic treatments: J. Beckmann, A history of inventions and discoveries, 4th ed., London, 1846, vol. 1, pp. 340 ff. A. P. Usher, A history of mechanical inventions, 2nd ed., Harvard University Press. 1954, pp. 191 ff., 304 ff.