1 “... was most active. The early Roman Empire is treated in a fourth section, and the final section addresses...”

2 “...Ptolemy was the most important physical scientist of the Roman Empire, and for a millennium and a...”

3 Table of Contents: “... and Astronomy in the Roman Empire -- Part V: Astronomical Art and Architecture of Early Europe -- Chapter 14...”

4 Table of Contents: “... and Time Measurement at the Time of Roman Empire -- The Twenty-One Books of Devices and Machines...”