SoS TRANS. ST. LOUIS ACAD. SCIENCE. 



obscuration 2| inches. But, the Calippian years and archons 

 coming down by two years, that eclipse happened in — 138, June 

 ist, loh. 15m., y 2°W., i.e., according to our Table (p. 429), 

 6°W. 



8, 9 d 10. Ptolemy (Aim. iv. 10, pp. 275, 277, 27S) cites three 

 eclipses observed during . the archonships of Phanostratus and 

 Evander, and he referred to Phanostratus both the eclipses in 



— 382, Dec. 23, 5h. 45m., y 10° E., obscuration 2 inches, and in 



— 381, June i8th, 6h. 45m., Si 7° 45' E., obscuration 5^ inches ; 

 but to Evander the eclipse in — 381, Dec. 12, ^h. 30m., 15 2° E., 

 as Pingre states. Inasmuch, however, as the Olympiads and 

 archons of this time come down by two years (p. 470), the latter 

 eclipse should be referred to —379, May 27th, I2h., ft 8° W., 

 obscuration 4 inches, but the ft lay too far west of the centre of 

 the earth's shadow (p. 429). On the other hand, it is apparent 

 that Ptolemy's eclipse in — 382, Dec. 23, i7h. 45m. P. T., which 

 he referred to the archonship of Phanostratus, is erroneous, be- 

 cause it happened, as we shall see below, subsequent to sunrise 

 both in Babylon and Greece. Ptolemy's eclipses occurred one year 

 later than he imagined, viz. in — 381, Dec. 12th, 9h. 30m. P. T., 

 y 2° E., or rather 3° W. (p. 429) ; further, in — 380, June 6th, 

 7h. 45m. P. T., ft 3° E., i.e. 2° W. ; and in —380, Dec. ist, oh. 

 30m., that is, 4h. 25m. in Babylon, and, according to our Table, 

 p. 429, nearly at 8 o'clock p.m. local time ; 15 1° W. 



5. The years in which Cambyses and Darius Hystaspes com- 

 menced to reign are, as we have seen, historically and mathema- 

 tically fixed (p. 483) ; for Cyrus died in — 526, seven years after 

 the conquest of Nineveh, and this epoch is put beyond the reach 

 of controversy by the eclipse in — 532, by the turnus of the He- 

 brew priests, and by Daniel. Accordingly, Cambyses must have 

 reigned since — 526, and this year is confirmed by the renewal of 

 an Apis period in the 6th year of his reign, viz. in — 520 (p. 405). 

 Consequently, the lunar eclipse observed in the 7th year of Cam- 

 byses (Aim. V. 14, p. 341) belongs to the year — 519, Nov. 8th, 

 2h. p.m. P. T., y 8° E., obscuration 2\ inches. Babylon time 

 being earlier by 2h. 45m., and the opposition beginning later by 

 nearly 4 hours, this eclipse happened in Babylon about 8 o'clock 

 p.m. The y lying 6° nearer to the sun (p. 429), this eclipse was 

 a total one in Babylon. Ptolemy, on the contrary, not knowing 



