Rome: Paulum Manutius, 1562. 4to. [iv], 93,  leaves, including index and errata. FIRST EDITION. Dolphin and anchor device on title, Greek and Roman types, numerous woodcut diagrams. Modern full calf in an antique style, gilt fleurons on covers; an exceptionally clean copy from the library of a Jesuit college with its inscription on title dated 1645. Item #13782
First and only edition of Ptolemy’s application of mathematics to astronomical problems. The Liber de analemmate outlines a method for finding angles used in the construction of sundials and is an “important demonstration that Greek mathematics consisted of more than ‘classical’ geometry. Because of its excellent commentary, the editio princeps of the Analemma is still worth consulting” (DSB XI, pp. 197-198, 205). It was edited by the noted mathematician Commandino, who appended his own work on the calibration of sundials in order to give further practical application of Ptolemy’s method. Commandino (1509-1575) used a fragmentary Latin translation of an Arabic text to recover Ptolemy’s complete work.