Footnotes

1.

Gerhard Dohrn-van Rossumtells the clock’s history in greatdetail in his History of the Hour (University of Chicago Press, 1996). Another useful survey is Carlo Cipolla’s Clocks and Culture, 1300-1700 (W.W. Norton, 1977).

2.

See Richard A. Parker’s and Otto Neugebauer’s Egyptian Astronomical Texts, 3 volumes (Providence, 1960-1969) and Marshall Clagett’s Ancient Egyptian Science, II: Calendars, Clocks, and Astronomy (Philadelphia, 1995).