424 TRANS. ST. LOUIS ACAD. SCIENCE. 



Greek history, and refers them to the epoch — 261, demonstrates 

 that the archons down to the year — 407 ruled one year, the fol- 

 lowing two years, later than Petavius stated. Since, moreover, 

 Persian history is connected with the Greek, the same monu- 

 ment evidences that all events of Persian, Median, Assyrian, and 

 Babylonian histories, connected with certain archons, likewise 

 happened respectively one or two years later than Ptolemy's His- 

 torical Canon says. Accordingly, the eclipses in the Almagest, 

 being linked to certain years of the same kings and archons, 

 must necessarily be referred to other dates than those cited by 

 Ptolemy. 



7. A number of Solar and Lunar Eclipses unknown to Pe- 

 tavius. — Since the year 1627, in which Petavius's Doctrina Tem- 

 porum appeared, several ecliptic new and full moons, unknown 

 to Petavius, have come to light, which are well qualified to cor- 

 rect the present history and chronology of the Greeks, Romans, 

 Egyptians, and other nations of old. We specify the following 

 only : 



The total eclipse of the sun in Rome, u.c. 450, — 400, July ist, 

 i7h. 45m,, mentioned by Cicero (De rep. i. 16), which work was 

 discovered about sixty years ago. The same is the case with the 

 Armenian Eusebius, who mentions several eclipses formerly un- 

 known. 



The solar eclipse preceding the conquest of Nineveh by Cyrus, 

 in — 532, Jan. 27th, 1511. 45m. P. T., described by Xenophon 

 (Anab. iii. 4, 7). 



The total eclipse of the moon, and the very small one of the 

 sun, at Athens, in — 420, Jan. 18, 2h., and Feb. 2, 6h., of which 

 the former happened on the i6th day of Anthesterion (Jan. 18). 

 Aristoph. Nubes 581, and the Scholiast in Scaliger's Synagoge. 



The total eclipse of the sun at Thebes, BcEotia, in — 465, Dec. 

 20. (Pindar in Dionys. Hel. p. 167, 18 Sylb.) 



The total eclipse of the sun in Pekin on the day of the autum- 

 nal equinox in — 2192, of which the date is fixed by a planetary 

 configuration. (Gaubil's Histoire de I'Astron. Chinoise, Paris, 

 1732, vol. 2, p. 140.) 



The partial eclipse of the moon, observed during the year of 

 the first Canicular period, at Tanis, Egypt, in — 2780, May 22d, 



